Installing Satellite Server from a Disconnected Network
Installing Red Hat Satellite Server from a Disconnected Network
Abstract
Chapter 1. Preparing your Environment for Installation
Before you install Satellite, ensure that your environment meets the following requirements.
1.1. System Requirements
The following requirements apply to the networked base operating system:
- x86_64 architecture
- The latest version of Red Hat Enterprise Linux 7 Server
- 4-core 2.0 GHz CPU at a minimum
- A minimum of 20 GB RAM is required for Satellite Server to function. In addition, a minimum of 4 GB RAM of swap space is also recommended. Satellite running with less RAM than the minimum value might not operate correctly.
- A unique host name, which can contain lower-case letters, numbers, dots (.) and hyphens (-)
- A current Red Hat Satellite subscription
- Administrative user (root) access
- A system umask of 0022
- Full forward and reverse DNS resolution using a fully-qualified domain name
Before you install Satellite Server, ensure that your environment meets the requirements for installation.
Satellite Server must be installed on a freshly provisioned system that serves no other function except to run Satellite Server. The freshly provisioned system must not have the following users provided by external identity providers to avoid conflicts with the local users that Satellite Server creates:
- postgres
- mongodb
- apache
- qpidd
- qdrouterd
- squid
- foreman
- tomcat
- foreman-proxy
- puppet
- puppetserver
The Red Hat Satellite Server and Capsule Server versions must match. For example, a Satellite 6.7 Server cannot run an earlier or later version of Capsule Server. Mismatching Satellite Server and Capsule Server versions results in the Capsule Server failing silently.
Certified hypervisors
Satellite Server is fully supported on both physical systems and virtual machines that run on hypervisors that are supported to run Red Hat Enterprise Linux. For more information about certified hypervisors, see Which hypervisors are certified to run Red Hat Enterprise Linux?.
FIPS Mode
You can install Satellite Server on a Red Hat Enterprise Linux system that is operating in FIPS mode. For more information, see Enabling FIPS Mode in the Red Hat Enterprise Linux Security Guide.
1.2. Storage Requirements
The following table details storage requirements for specific directories. These values are based on expected use case scenarios and can vary according to individual environments.
The runtime size was measured with Red Hat Enterprise Linux 6, 7, and 8 repositories synchronized.
Directory | Installation Size | Runtime Size |
---|---|---|
/var/cache/pulp/ | 1 MB | 30 GB |
/var/lib/pulp/ | 1 MB | 300 GB |
/var/lib/mongodb/ | 3.5 GB | 50 GB |
/var/lib/qpidd/ | 25 MB | Not Applicable |
/var/log/ | 10 MB | 10 GB |
/var/lib/pgsql/ | 100 MB | 10 GB |
/var/spool/squid/ | 0 MB | 10 GB |
/usr | 3 GB | Not Applicable |
/opt | 3 GB | Not Applicable |
/opt/puppetlabs | 500 MB | Not Applicable |
1.3. Storage Guidelines
Consider the following guidelines when installing Satellite Server to increase efficiency.
-
If you mount the
/tmp
directory as a separate file system, you must use theexec
mount option in the/etc/fstab
file. If/tmp
is already mounted with thenoexec
option, you must change the option toexec
and re-mount the file system. This is a requirement for thepuppetserver
service to work. -
Because most Satellite Server data is stored in the
/var
directory, mounting/var
on LVM storage can help the system to scale. -
Using the same volume for the
/var/cache/pulp/
and/var/lib/pulp/
directories can decrease the time required to move content from/var/cache/pulp/
to/var/lib/pulp/
after synchronizing. -
The
/var/lib/qpidd/
directory uses slightly more than 2 MB per Content Host managed by thegoferd
service. For example, 10 000 Content Hosts require 20 GB of disk space in/var/lib/qpidd/
. -
Use high-bandwidth, low-latency storage for the
/var/lib/pulp/
and/var/lib/mongodb/
directories. As Red Hat Satellite has many operations that are I/O intensive, using high latency, low-bandwidth storage causes performance degradation. Ensure your installation has a speed in the range 60 - 80 Megabytes per second. You can use thefio
tool to get this data. See the Red Hat Knowledgebase solution Impact of Disk Speed on Satellite Operations for more information on using thefio
tool.
File System Guidelines
-
Use the XFS file system for Red Hat Satellite 6 because it does not have the inode limitations that
ext4
does. Because Satellite Server uses a lot of symbolic links it is likely that your system might run out of inodes if usingext4
and the default number of inodes. -
Do not use NFS with MongoDB because MongoDB does not use conventional I/O to access data files and performance problems occur when both the data files and the journal files are hosted on NFS. If required to use NFS, mount the volume with the following options in the
/etc/fstab
file:bg
,nolock
, andnoatime
. - Do not use NFS for Pulp data storage. Using NFS for Pulp has a negative performance impact on content synchronization.
- Do not use the GFS2 file system as the input-output latency is too high.
Log File Storage
Log files are written to /var/log/messages/,
/var/log/httpd/
, and /var/lib/foreman-proxy/openscap/content/
. You can manage the size of these files using logrotate. For more information, see Log Rotation in the Red Hat Enterprise Linux 7 System Administrator’s Guide.
The exact amount of storage you require for log messages depends on your installation and setup.
SELinux Considerations for NFS Mount
When the /var/lib/pulp
directory is mounted using an NFS share, SELinux blocks the synchronization process. To avoid this, specify the SELinux context of the /var/lib/pulp
directory in the file system table by adding the following lines to /etc/fstab
:
nfs.example.com:/nfsshare /var/lib/pulp/content nfs context="system_u:object_r:httpd_sys_rw_content_t:s0" 1 2
If NFS share is already mounted, remount it using the above configuration and enter the following command:
# chcon -R system_u:object_r:httpd_sys_rw_content_t:s0 /var/lib/pulp
Duplicated Packages
Packages that are duplicated in different repositories are only stored once on the disk. Additional repositories containing duplicate packages require less additional storage. The bulk of storage resides in the /var/lib/mongodb/
and /var/lib/pulp/
directories. These end points are not manually configurable. Ensure that storage is available on the /var
file system to prevent storage problems.
Temporary Storage
The /var/cache/pulp/
directory is used to temporarily store content while it is being synchronized. After a full synchronization task is completed, the content is moved to the /var/lib/pulp/
directory.
For content in RPM format, each RPM file is moved to the /var/lib/pulp
directory after it is synchronized. A maximum of 5 RPM files are stored in the /var/cache/pulp/
directory at any time. Up to 8 RPM content synchronization tasks can run simultaneously by default, with each using up to 1 GB of metadata.
Software Collections
Software collections are installed in the /opt/rh/
and /opt/theforeman/
directories.
Write and execute permissions by the root user are required for installation to the /opt
directory.
Symbolic links
You cannot use symbolic links for /var/lib/pulp/
and /var/lib/mongodb/
.
ISO Images
For content in ISO format, all ISO files per synchronization task are stored in /var/cache/pulp/
until the task is complete, after which they are moved to the /var/lib/pulp/
directory.
If you plan to use ISO images for installing or updating, you must provide external storage or allow space in /var/tmp
for temporarily storing ISO files.
For example, if you are synchronizing four ISO files, each 4 GB in size, this requires a total of 16 GB in the /var/cache/pulp/
directory. Consider the number of ISO files you intend synchronizing because the temporary disk space required for them typically exceeds that of RPM content.
1.4. Supported Operating Systems
You can install the operating system from a disc, local ISO image, kickstart, or any other method that Red Hat supports. Red Hat Satellite Server is supported only on the latest versions of Red Hat Enterprise Linux 7 Server that is available at the time when Satellite Server 6.7 is installed. Previous versions of Red Hat Enterprise Linux including EUS or z-stream are not supported.
Red Hat Satellite Server requires a Red Hat Enterprise Linux installation with the @Base
package group with no other package-set modifications, and without third-party configurations or software not directly necessary for the direct operation of the server. This restriction includes hardening and other non-Red Hat security software. If you require such software in your infrastructure, install and verify a complete working Satellite Server first, then create a backup of the system before adding any non-Red Hat software.
Install Satellite Server on a freshly provisioned system.
Red Hat does not support using the system for anything other than running Satellite Server.
1.5. Supported Browsers
Satellite supports recent versions of Firefox and Google Chrome browsers.
The Satellite web UI and command-line interface support English, Portuguese, Simplified Chinese Traditional Chinese, Korean, Japanese, Italian, Spanish, Russian, French, and German.
1.6. Ports and Firewalls Requirements
For the components of Satellite architecture to communicate, ensure that the required network ports are open and free on the base operating system. You must also ensure that the required network ports are open on any network-based firewalls.
Use this information to configure any network-based firewalls. Note that some cloud solutions must be specifically configured to allow communications between machines because they isolate machines similarly to network-based firewalls. If you use an application-based firewall, ensure that the application-based firewall permits all applications that are listed in the tables and known to your firewall. If possible, disable the application checking and allow open port communication based on the protocol.
Integrated Capsule
Satellite Server has an integrated Capsule and any host that is directly connected to Satellite Server is a Client of Satellite in the context of this section. This includes the base operating system on which Capsule Server is running.
Clients of Capsule
Hosts which are clients of Capsules, other than Satellite’s integrated Capsule, do not need access to Satellite Server. For more information on Satellite Topology, see Capsule Networking in Planning for Red Hat Satellite 6.
Required ports can change based on your configuration.
A matrix table of ports is available in the Red Hat Knowledgebase solution Red Hat Satellite List of Network Ports.
The following tables indicate the destination port and the direction of network traffic:
Port | Protocol | Service | Required For |
---|---|---|---|
443 | TCP | HTTPS | Browser-based UI access to Satellite |
80 | TCP | HTTP | Redirection to HTTPS for web UI access to Satellite (Optional) |
Port | Protocol | Service | Required For |
---|---|---|---|
80 | TCP | HTTP | Anaconda, yum, for obtaining Katello certificates, templates, and for downloading iPXE firmware |
443 | TCP | HTTPS | Subscription Management Services, yum, Telemetry Services, and for connection to the Katello Agent |
5646 | TCP | AMQP | The Capsule Qpid dispatch router to the Qpid dispatch router in Satellite |
5647 | TCP | AMQP | Katello Agent to communicate with Satellite’s Qpid dispatch router |
8000 | TCP | HTTP | Anaconda to download kickstart templates to hosts, and for downloading iPXE firmware |
8140 | TCP | HTTPS | Puppet agent to Puppet master connections |
9090 | TCP | HTTPS | Sending SCAP reports to the integrated Capsule, for the discovery image during provisioning, and for communicating with Satellite Server to copy the SSH keys for Remote Execution (Rex) configuration |
53 | TCP and UDP | DNS | Client DNS queries to a Satellite’s integrated Capsule DNS service (Optional) |
67 | UDP | DHCP | Client to Satellite’s integrated Capsule broadcasts, DHCP broadcasts for Client provisioning from a Satellite’s integrated Capsule (Optional) |
69 | UDP | TFTP | Clients downloading PXE boot image files from a Satellites' integrated Capsule for provisioning (Optional) |
5000 | TCP | HTTPS | Connection to Katello for the Docker registry (Optional) |
Any managed host that is directly connected to Satellite Server is a client in this context because it is a client of the integrated Capsule. This includes the base operating system on which a Capsule Server is running.
Port | Protocol | Service | Required for |
---|---|---|---|
443 | TCP | HTTPS | Connections to the Pulp server in the Capsule |
9090 | TCP | HTTPS | Connections to the proxy in the Capsule |
80 | TCP | HTTP | Downloading a bootdisk (Optional) |
Port | Protocol | Service | Required For |
---|---|---|---|
22 | TCP | SSH | Satellite and Capsule originated communications, for Remote Execution (Rex) and Ansible. |
443 | TCP | HTTPS | Satellite originated communications, for vCenter compute resource. |
5000 | TCP | HTTP | Satellite originated communications, for compute resources in OpenStack or for running containers. |
22, 16514 | TCP | SSH, SSL/TLS | Satellite originated communications, for compute resources in libvirt. |
389, 636 | TCP | LDAP, LDAPS | Satellite originated communications, for LDAP and secured LDAP authentication sources. |
5900 to 5930 | TCP | SSL/TLS | Satellite originated communications, for NoVNC console in web UI to hypervisors. |
1.7. Enabling Connections from a Client to Satellite Server
Capsules and Content Hosts that are clients of a Satellite Server’s internal Capsule require access through Satellite’s host-based firewall and any network-based firewalls.
Use this procedure to configure the host-based firewall on the Red Hat Enterprise Linux 7 system that Satellite is installed on, to enable incoming connections from Clients, and to make the configuration persistent across system reboots. For more information on the ports used, see Section 1.6, “Ports and Firewalls Requirements”.
Procedure
To open the ports for client to Satellite communication, enter the following command on the base operating system that you want to install Satellite on:
# firewall-cmd \ --add-port="80/tcp" --add-port="443/tcp" \ --add-port="5647/tcp" --add-port="8000/tcp" \ --add-port="8140/tcp" --add-port="9090/tcp" \ --add-port="53/udp" --add-port="53/tcp" \ --add-port="67/udp" --add-port="69/udp" \ --add-port="5000/tcp"
Make the changes persistent:
# firewall-cmd --runtime-to-permanent
1.8. Verifying Firewall Settings
Use this procedure to verify your changes to the firewall settings.
Procedure
To verify the firewall settings, complete the following step:
Enter the following command:
# firewall-cmd --list-all
For more information, see Getting Started with firewalld in the Red Hat Enterprise Linux 7 Security Guide.
1.9. Verifying DNS resolution
Verify the full forward and reverse DNS resolution using a fully-qualified domain name to prevent issues while installing Satellite.
Procedure
Ensure that the host name and local host resolve correctly:
# ping -c1 localhost # ping -c1 `hostname -f` # my_system.domain.com
Successful name resolution results in output similar to the following:
# ping -c1 localhost PING localhost (127.0.0.1) 56(84) bytes of data. 64 bytes from localhost (127.0.0.1): icmp_seq=1 ttl=64 time=0.043 ms --- localhost ping statistics --- 1 packets transmitted, 1 received, 0% packet loss, time 0ms rtt min/avg/max/mdev = 0.043/0.043/0.043/0.000 ms # ping -c1 `hostname -f` PING hostname.gateway (XX.XX.XX.XX) 56(84) bytes of data. 64 bytes from hostname.gateway (XX.XX.XX.XX): icmp_seq=1 ttl=64 time=0.019 ms --- localhost.gateway ping statistics --- 1 packets transmitted, 1 received, 0% packet loss, time 0ms rtt min/avg/max/mdev = 0.019/0.019/0.019/0.000 ms
To avoid discrepancies with static and transient host names, set all the host names on the system by entering the following command:
# hostnamectl set-hostname name
For more information, see the Configuring Host Names Using hostnamectl in the Red Hat Enterprise Linux 7 Networking Guide.
Name resolution is critical to the operation of Satellite 6. If Satellite cannot properly resolve its fully qualified domain name, tasks such as content management, subscription management, and provisioning will fail.
Chapter 2. Installing Satellite Server
When the intended host for Satellite Server is in a disconnected environment, you can install Satellite Server by using an external computer to download an ISO image of the packages, and copying the packages to the system you want to install Satellite Server on. This method is not recommended for any other situation as ISO images might not contain the latest updates, bug fixes, and functionality.
Use the following procedures to install Satellite Server, perform the initial configuration, and import subscription manifests.
Before you continue, consider which manifests are relevant for your environment. For more information on manifests, see Managing Subscriptions in the Content Management Guide.
You cannot register Satellite Server to itself.
2.1. Downloading the Binary DVD Images
Use this procedure to download the ISO images for Red Hat Enterprise Linux and Red Hat Satellite.
Procedure
- Go to Red Hat Customer Portal and log in.
- Click DOWNLOADS.
- Select Red Hat Enterprise Linux.
Ensure that you have the correct product and version for your environment.
- Product Variant is set to Red Hat Enterprise Linux Server.
- Version is set to the latest minor version of the product you plan to use as the base operating system.
- Architecture is set to the 64 bit version.
- On the Product Software tab, download the Binary DVD image for the latest Red Hat Enterprise Linux Server version.
- Click DOWNLOADS and select Red Hat Satellite.
Ensure that you have the correct product and version for your environment.
- Product Variant is set to Red Hat Satellite.
- Version is set to the latest minor version of the product you plan to use as the base operating system.
- Architecture is set to the 64 bit version.
- On the Product Software tab, download the Binary DVD image for the latest Red Hat Satellite version.
Copy the ISO files to
/var/tmp
on the Satellite base operating system or other accessible storage device.# scp localfile username@hostname:remotefile
2.2. Configuring the Base Operating System with Offline Repositories
Use this procedure to configure offline repositories for the Red Hat Enterprise Linux and Red Hat Satellite ISO images.
Procedure
Create a directory to serve as the mount point for the ISO file corresponding to the base operating system’s version.
# mkdir /media/rhel7-server
Mount the ISO image for Red Hat Enterprise Linux to the mount point.
# mount -o loop rhel7-Server-DVD.iso /media/rhel7-server
Copy the ISO file’s repository data file.
# cp /media/rhel7-server/media.repo /etc/yum.repos.d/rhel7-server.repo
Edit the repository data file and add the
baseurl
directive.baseurl=file:///media/rhel7-server/
Verify that the repository has been configured.
# yum repolist
Create a directory to serve as the mount point for the ISO file of the Satellite Server.
# mkdir /media/sat6
Mount the ISO image for Red Hat Satellite Server to the mount point.
# mount -o loop sat6-DVD.iso /media/sat6
2.3. Installing the Satellite Packages from the Offline Repositories
Use this procedure to install the Satellite packages from the offline repositories.
Procedure
Ensure the ISO images for Red Hat Enterprise Linux Server and Red Hat Satellite are mounted:
# findmnt -t iso9660
Import the Red Hat GPG keys:
# rpm --import /etc/pki/rpm-gpg/RPM-GPG-KEY-redhat-release
Ensure the base operating system is up to date with the Binary DVD image:
# yum update
Change to the directory where the Satellite ISO is mounted:
# cd /media/sat6/
Run the installation script in the mounted directory:
# ./install_packages
If you have successfully installed the Satellite packages, the following message is displayed:
Install is complete. Please run satellite-installer --scenario satellite
.
2.4. Resolving Package Dependency Errors
If there are package dependency errors during installation of Satellite Server packages, you can resolve the errors by downloading and installing packages from Red Hat Customer Portal. For more information about resolving dependency errors, see the KCS solution How can I use the yum output to solve yum dependency errors?.
If you have successfully installed the Satellite packages, skip this procedure.
Procedure
- Go to the Red Hat Customer Portal and log in.
- Click DOWNLOADS.
- Click the Product that contains the package that you want to download.
- Ensure that you have the correct Product Variant, Version, and Architecture for your environment.
- Click the Packages tab.
- In the Search field, enter the name of the package.
- Click the package.
- From the Version list, select the version of the package.
- At the bottom of the page, click Download Now.
- Copy the package to the Satellite base operating system.
On Satellite Server, change to the directory where the package is located:
# cd /path-to-package/
Install the package locally:
# yum localinstall package_name
Change to the directory where the Satellite ISO is mounted:
# cd /media/sat6/
Verify that you have resoled the package dependency errors by installing the Satellite Server packages. If there are further package dependency errors, repeat this procedure.
# ./install_packages
If you have successfully installed the Satellite packages, the following message is displayed:
Install is complete. Please run satellite-installer --scenario satellite
.
2.5. Synchronizing the System Clock With chronyd
To minimize the effects of time drift, you must synchronize the system clock on the base operating system on which you want to install Satellite Server with Network Time Protocol (NTP) servers. If the base operating system clock is configured incorrectly, certificate verification might fail.
For more information about the chrony
suite, see Configuring NTP Using the chrony Suite in the Red Hat Enterprise Linux 7 System Administrator’s Guide.
Procedure
Install the
chrony
package:# yum install chrony
Start and enable the
chronyd
service:# systemctl start chronyd # systemctl enable chronyd
2.6. Installing the SOS Package on the Base Operating System
Install the sos package on the base operating system so that you can collect configuration and diagnostic information from a Red Hat Enterprise Linux system. You can also use it to provide the initial system analysis, which is required when opening a service request with Red Hat Technical Support. For more information on using sos
, see the Knowledgebase solution What is a sosreport and how to create one in Red Hat Enterprise Linux 4.6 and later? on the Red Hat Customer Portal.
Procedure
Install the sos package:
# yum install sos
2.7. Configuring Satellite Server
Install Satellite Server using the satellite-installer
installation script. Choose from one of the following methods:
- Section 2.7.1, “Configuring Satellite Manually”. This method is performed by running the installation script with one or more command options. The command options override the corresponding default initial configuration options and are recorded in the Satellite answer file. You can run the script as often as needed to configure any necessary options.
-
Section 2.7.2, “Configuring Satellite Automatically using an Answer File”. This method is performed by using an answer file to automate the configuration process when running the installation script. The default Satellite answer file is
/etc/foreman-installer/scenarios.d/satellite-answers.yaml
. The answer file in use is set by theanswer_file
directive in the/etc/foreman-installer/scenarios.d/satellite.yaml
configuration file.
Depending on the options that you use when running the Satellite installer, the configuration can take several minutes to complete. An administrator can view the answer file to see previously used options for both methods.
2.7.1. Configuring Satellite Manually
This initial configuration procedure creates an organization, location, user name, and password. After the initial configuration, you can create additional organizations and locations if required. The initial configuration also installs MongoDB and PostgreSQL databases on the same server.
The installation process can take tens of minutes to complete. If you are connecting remotely to the system, use a utility such as screen
or tmux
that allows suspending and reattaching a communication session so that you can check the installation progress in case you become disconnected from the remote system. The Red Hat Knowledgebase article How to use the screen command describes installing screen
; alternately see the screen
manual page for more information. If you lose connection to the shell where the installation command is running, see the log at /var/log/foreman-installer/satellite.log
to determine if the process completed successfully.
Considerations for Manual Configuration
-
Use the
satellite-installer --scenario satellite --help
command to display the available options and any default values. If you do not specify any values, the default values are used. -
Specify a meaningful value for the option:
--foreman-initial-organization
. This can be your company name. An internal label that matches the value is also created and cannot be changed afterwards. If you do not specify a value, an organization called Default Organization with the label Default_Organization is created. You can rename the organization name but not the label. -
By default, all configuration files configured by the installer are managed by Puppet. When
satellite-installer
runs, it overwrites any manual changes to the Puppet managed files with the initial values. By default, Satellite Server is installed with the Puppet agent running as a service. If required, you can disable Puppet agent on Satellite Server using the--puppet-runmode=none
option. -
If you want to manage DNS files and DHCP files manually, use the
--foreman-proxy-dns-managed=false
and--foreman-proxy-dhcp-managed=false
options so that Puppet does not manage the files related to the respective services. For more information on how to apply custom configuration on other services, see Appendix A, Applying Custom Configuration to Red Hat Satellite.
Procedure
Enter the following command with any additional options that you want to use:
# satellite-installer --scenario satellite \ --foreman-initial-organization "initial_organization_name" \ --foreman-initial-location "initial_location_name" \ --foreman-initial-admin-username admin_user_name \ --foreman-initial-admin-password admin_password
The script displays its progress and writes logs to
/var/log/foreman-installer/satellite.log
.Unmount the ISO images:
# umount /media/sat6 # umount /media/rhel7-server
2.7.2. Configuring Satellite Automatically using an Answer File
You can use answer files to automate installations with customized options. The initial answer file is sparsely populated. After you run the satellite-installer
script the first time, the answer file is populated with the standard parameter values for installation. You can change the configuration of Satellite Server at any time.
You should use the FQDN instead of the IP address where possible in case of network changes.
Procedure
Copy the default answer file
/etc/foreman-installer/scenarios.d/satellite-answers.yaml
to a location on your local file system.# cp /etc/foreman-installer/scenarios.d/satellite-answers.yaml \ /etc/foreman-installer/scenarios.d/my-answer-file.yaml
-
To view all of the configurable options, enter the
satellite-installer --scenario satellite --help
command. - Open your copy of the answer file, edit the values to suit your environment, and save the file.
Open the
/etc/foreman-installer/scenarios.d/satellite.yaml
file and edit the answer file entry to point to your custom answer file.:answer_file: /etc/foreman-installer/scenarios.d/my-answer-file.yaml
Run the
satellite-installer
script.# satellite-installer --scenario satellite
Unmount the ISO images.
# umount /media/sat6 # umount /media/rhel7-server
2.8. Enabling the Disconnected Mode
Enable the disconnected mode on Satellite Server. When the disconnected mode is enabled, Satellite Server does not access the Red Hat Content Delivery Network (CDN).
Procedure
- In the Satellite web UI, navigate to Administer > Settings.
- Click the Content tab.
-
Set the
Disconnected mode
value toYes
.
For CLI Users
Enter the following command on Satellite Server:
# hammer settings set --name content_disconnected --value true
2.9. Importing a Subscription Manifest into Satellite Server
Use the following procedure to import a Subscription Manifest into Satellite Server.
Prerequisites
- You must have a Subscription Manifest file exported from the Customer Portal. For more information, see Using Manifests in the Using Red Hat Subscription Management guide.
- Ensure that you enable the disconnected mode on your Satellite Server. For more information, see Section 2.8, “Enabling the Disconnected Mode”.
Procedure
- In the Satellite web UI, ensure the context is set to the organization you want to use.
- Navigate to Content > Subscriptions and click Manage Manifest.
- In the Manage Manifest window, click Browse.
- Navigate to the location that contains the Subscription Manifest file, then click Open. If the Manage Manifest window does not close automatically, click Close to return to the Subscriptions window.
For CLI Users
Copy the Subscription Manifest file from your client to Satellite Server:
$ scp ~/manifest_file.zip root@satellite.example.com:~/.
Log in to Satellite Server as the
root
user and import the Subscription Manifest file:# hammer subscription upload \ --file ~/manifest_file.zip \ --organization "organization_name"
Chapter 3. Performing Additional Configuration on Satellite Server
3.1. Configuring Satellite to Synchronize Content with a Local CDN Server
In a disconnected environment, you must ensure that Satellite Server contains the required content to provision systems with the latest security updates, errata, and packages. To do this, follow this procedure to download content ISO images from the Red Hat Customer Portal and import them into a local CDN server. You can host the local CDN server on the base operating system of Satellite Server or on a system that is accessible to Satellite over HTTP. Next, you must configure Satellite Server to synchronize content with the local CDN server.
Procedure
- Log on to the Red Hat Customer Portal at https://access.redhat.com.
- In the upper left of the window, click Downloads and select Red Hat Satellite.
- Click the Content ISOs tab. This page lists all the products that are available in your subscription.
- Click the link for the product name, such as Red Hat Enterprise Linux 7 Server (x86_64) to download the ISO image.
Copy all of Satellite Content ISO images to a system that you want to use as a local CDN server. For example, the
/root/isos
directory on Satellite Server.Note that storing the content on the same system where Satellite is installed is not a requirement. The CDN can be hosted on a different system inside the same disconnected network as long as it is accessible to Satellite Server over HTTP.
On the system that you want to use as your local CDN server, create a local directory that is accessible over httpd. For example,
/var/www/html/pub/sat-import/
:# mkdir -p /var/www/html/pub/sat-import/
Create a mount point and temporarily mount the ISO image at that location:
# mkdir /mnt/iso # mount -o loop /root/isos/first_iso /mnt/iso
Recursively copy content of the first ISO image to the local directory:
# cp -ruv /mnt/iso/* /var/www/html/pub/sat-import/
If you do not plan to use the mounted binary DVD ISO image, unmount and remove the mount point:
# umount /mnt/iso # rmdir /mnt/iso
-
Repeat the above step for each ISO image until you have copied all the data from the Content ISO images into
/var/www/html/pub/sat-import/
. Ensure that the SELinux context for the directory is correct:
# restorecon -rv /var/www/html/pub/sat-import/
- In the Satellite web UI, navigate to Content > Subscriptions.
- Click Manage Manifest.
Edit the Red Hat CDN URL field to point to the host name of the system that you use as a local CDN server with the newly created directory, for example:
- Click Update and then upload your manifest into Satellite.
3.2. Importing Kickstart Repositories
Kickstart repositories are not provided by the Content ISO image. To use Kickstart repositories in your disconnected Satellite, you must download a binary DVD ISO file for the version of Red Hat Enterprise Linux that you want to use and copy the Kickstart files to Satellite.
To import Kickstart repositories for Red Hat Enterprise Linux 7, complete Section 3.2.1, “Importing Kickstart Repositories for Red Hat Enterprise Linux 7”.
To import Kickstart repositories for Red Hat Enterprise Linux 8, complete Section 3.2.2, “Importing Kickstart Repositories for Red Hat Enterprise Linux 8”.
3.2.1. Importing Kickstart Repositories for Red Hat Enterprise Linux 7
To import Kickstart repositories for Red Hat Enterprise Linux 7, complete the following steps on Satellite.
Procedure
- Navigate to the Red Hat Customer Portal at https://access.redhat.com/ and log in.
- In the upper left of the window, click Downloads.
- To the right of Red Hat Enterprise Linux 7, click Versions 7 and below.
- From the Version list, select the required version of the Red Hat Enterprise Linux 7, for example 7.7.
- In the Download Red Hat Enterprise Linux window, locate the binary DVD version of the ISO image, for example, Red Hat Enterprise Linux 7.7 Binary DVD, and click Download Now.
- When the download completes, copy the ISO image to Satellite Server.
On Satellite Server, create a mount point and temporarily mount the ISO image at that location:
# mkdir /mnt/iso # mount -o loop rhel-binary-dvd.iso /mnt/iso
Create Kickstart directories:
# mkdir --parents \ /var/www/html/pub/sat-import/content/dist/rhel/server/7/7.7/x86_64/kickstart/
Copy the
kickstart
files from the ISO image:# cp -a /mnt/iso/* /var/www/html/pub/sat-import/content/dist/rhel/server/7/7.7/x86_64/kickstart/
Add the following entries to the listing files:
To the
/var/www/html/pub/sat-import/content/dist/rhel/server/7/listing
file, append the version number with a new line. For example, for the RHEL 7.7 ISO, append7.7
.To the
/var/www/html/pub/sat-import/content/dist/rhel/server/7/7.7/listing
file, append the architecture with a new line. For example,x86_64
.To the
/var/www/html/pub/sat-import/content/dist/rhel/server/7/7.7/x86_64/listing
file, appendkickstart
with a new line.Copy the
.treeinfo
files from the ISO image:# cp /mnt/iso/.treeinfo \ /var/www/html/pub/sat-import/content/dist/rhel/server/7/7.7/x86_64/kickstart/treeinfo
If you do not plan to use the mounted binary DVD ISO image, unmount and remove the directory:
# umount /mnt/iso # rmdir /mnt/iso
- In the Satellite web UI, enable the Kickstart repositories.
3.2.2. Importing Kickstart Repositories for Red Hat Enterprise Linux 8
To import Kickstart repositories for Red Hat Enterprise Linux 8, complete the following steps on Satellite.
Procedure
- Navigate to the Red Hat Customer Portal at https://access.redhat.com/ and log in.
- In the upper left of the window, click Downloads.
- Click Red Hat Enterprise Linux 8.
- In the Download Red Hat Enterprise Linux window, locate the binary DVD version of the ISO image, for example, Red Hat Enterprise Linux 8.1 Binary DVD, and click Download Now.
- When the download completes, copy the ISO image to Satellite Server.
On Satellite Server, create a mount point and temporarily mount the ISO image at that location:
# mkdir /mnt/iso # mount -o loop rhel-binary-dvd.iso /mnt/iso
Create directories for Red Hat Enterprise Linux 8 AppStream and BaseOS Kickstart repositories:
# mkdir --parents \ /var/www/html/pub/sat-import/content/dist/rhel8/8.1/x86_64/appstream/kickstart # mkdir --parents \ /var/www/html/pub/sat-import/content/dist/rhel8/8.1/x86_64/baseos/kickstart
Copy the
kickstart
files from the ISO image:# cp -a /mnt/iso/AppStream/* \ /var/www/html/pub/sat-import/content/dist/rhel8/8.1/x86_64/appstream/kickstart # cp -a /mnt/iso/BaseOS/* /mnt/iso/images/ \ /var/www/html/pub/sat-import/content/dist/rhel8/8.1/x86_64/baseos/kickstart
Note that for BaseOS, you must also copy the contents of the
/mnt/iso/images/
directory.Add the following entries to the listing files:
To the
/var/www/html/pub/sat-import/content/dist/rhel8/8.1/x86_64/appstream/listing
file, appendkickstart
with a new line.To the
/var/www/html/pub/sat-import/content/dist/rhel8/8.1/x86_64/baseos/listing
file, appendkickstart
with a new line:To the
/var/www/html/pub/sat-import/content/dist/rhel8/listing
file, append the version number with a new line. For example, for the RHEL 8.1 binary ISO, append8.1
.Copy the
.treeinfo
files from the ISO image:# cp /mnt/iso/.treeinfo \ /var/www/html/pub/sat-import/content/dist/rhel8/8.1/x86_64/appstream/kickstart/treeinfo # cp /mnt/iso/.treeinfo \ /var/www/html/pub/sat-import/content/dist/rhel8/8.1/x86_64/baseos/kickstart/treeinfo
-
Open the
/var/www/html/pub/sat-import/content/dist/rhel8/8.1/x86_64/baseos/kickstart/treeinfo
file for editing. In the
[general]
section, make the following changes:-
Change
packagedir = AppStream/Packages
topackagedir = Packages
-
Change
repository = AppStream
torepository = .
-
Change
variant = AppStream
tovariant = BaseOS
-
Change
variants = AppStream,BaseOS
tovariants = BaseOS
-
Change
-
In the
[tree]
section, changevariants = AppStream,BaseOS
tovariants = BaseOS
. In the
[variant-BaseOS]
section, make the following changes:-
Change
packages = BaseOS/Packages
topackages = Packages
-
Change
repository = BaseOS
torepository = .
-
Change
-
Delete the
[media]
and[variant-AppStream]
sections. - Save and close the file.
Verify that the
/var/www/html/pub/sat-import/content/dist/rhel8/8.1/x86_64/baseos/kickstart/treeinfo
file has the following format:[checksums] images/efiboot.img = sha256:9ad9beee4c906cd05d227a1be7a499c8d2f20b3891c79831325844c845262bb6 images/install.img = sha256:e246bf4aedfff3bb54ae9012f959597cdab7387aadb3a504f841bdc2c35fe75e images/pxeboot/initrd.img = sha256:a66e3c158f02840b19c372136a522177a2ab4bd91cb7269fb5bfdaaf7452efef images/pxeboot/vmlinuz = sha256:789028335b64ddad343f61f2abfdc9819ed8e9dfad4df43a2694c0a0ba780d16 [general] ; WARNING.0 = This section provides compatibility with pre-productmd treeinfos. ; WARNING.1 = Read productmd documentation for details about new format. arch = x86_64 family = Red Hat Enterprise Linux name = Red Hat Enterprise Linux 8.1.0 packagedir = Packages platforms = x86_64,xen repository = . timestamp = 1571146127 variant = BaseOS variants = BaseOS version = 8.1.0 [header] type = productmd.treeinfo version = 1.2 [images-x86_64] efiboot.img = images/efiboot.img initrd = images/pxeboot/initrd.img kernel = images/pxeboot/vmlinuz [images-xen] initrd = images/pxeboot/initrd.img kernel = images/pxeboot/vmlinuz [release] name = Red Hat Enterprise Linux short = RHEL version = 8.1.0 [stage2] mainimage = images/install.img [tree] arch = x86_64 build_timestamp = 1571146127 platforms = x86_64,xen variants = BaseOS [variant-BaseOS] id = BaseOS name = BaseOS packages = Packages repository = . type = variant uid = BaseOS
-
Open the
/var/www/html/pub/sat-import/content/dist/rhel8/8.1/x86_64/appstream/kickstart/treeinfo
file for editing. In the
[general]
section, make the following changes:-
Change
packagedir = AppStream/Packages
topackagedir = Packages
-
Change
repository = AppStream
torepository = .
-
Change
variants = AppStream,BaseOS
tovariants = AppStream
-
Change
-
In the
[tree]
section, changevariants = AppStream,BaseOS
tovariants = AppStream
. In the
[variant-AppStream]
section, make the following changes:-
Change
packages = AppStream/Packages
topackages = Packages
-
Change
repository = AppStream
torepository = .
-
Change
-
Delete the following sections from the file:
[checksums]
,[images-x86_64]
,[images-xen]
,[media]
,[stage2]
,[variant-BaseOS]
. - Save and close the file.
Verify that the
/var/www/html/pub/sat-import/content/dist/rhel8/8.1/x86_64/appstream/kickstart/treeinfo
file has the following format:[general] ; WARNING.0 = This section provides compatibility with pre-productmd treeinfos. ; WARNING.1 = Read productmd documentation for details about new format. arch = x86_64 family = Red Hat Enterprise Linux name = Red Hat Enterprise Linux 8.1.0 packagedir = Packages platforms = x86_64,xen repository = . timestamp = 1571146127 variant = AppStream variants = AppStream version = 8.1.0 [header] type = productmd.treeinfo version = 1.2 [release] name = Red Hat Enterprise Linux short = RHEL version = 8.1.0 [tree] arch = x86_64 build_timestamp = 1571146127 platforms = x86_64,xen variants = AppStream [variant-AppStream] id = AppStream name = AppStream packages = Packages repository = . type = variant uid = AppStream
If you do not plan to use the mounted binary DVD ISO image, unmount and remove the directory:
# umount /mnt/iso # rmdir /mnt/iso
- In the Satellite web UI, enable the Kickstart repositories.
3.3. Enabling the Satellite Tools 6.7 Repository
The Satellite Tools 6.7 repository provides the katello-agent
, katello-host-tools
, and puppet
packages for clients registered to Satellite Server.
Prerequisites
- Ensure that you import all content ISO images that you require into Satellite Server.
Procedure
- In the Satellite web UI, navigate to Content > Red Hat Repositories.
- Use the Search field to enter the following repository name: Satellite Tools 6.7 (for RHEL 7 Server) (RPMs).
In the Available Repositories pane, click on Satellite Tools 6.7 (for RHEL 7 Server) (RPMs) to expand the repository set.
If the Satellite Tools 6.7 items are not visible, it may be because they are not included in the Subscription Manifest obtained from the Customer Portal. To correct that, log in to the Customer Portal, add these repositories, download the Subscription Manifest and import it into Satellite.
-
For the
x86_64
entry, click the Enable icon to enable the repository.
Enable the Satellite Tools 6.7 repository for every supported major version of Red Hat Enterprise Linux running on your hosts. After enabling a Red Hat repository, a Product for this repository is automatically created.
For CLI Users
Enable the Satellite Tools 6.7 repository using the
hammer repository-set enable
command:# hammer repository-set enable --organization "initial_organization_name" \ --product 'Red Hat Enterprise Linux Server' \ --basearch='x86_64' \ --name 'Red Hat Satellite Tools 6.7 (for RHEL 7 Server) (RPMs)'
3.4. Synchronizing the Satellite Tools 6.7 Repository
Use this section to synchronize the Satellite Tools 6.7 repository from the Red Hat Content Delivery Network (CDN) to your Satellite. This repository provides the katello-agent
, katello-host-tools
, and puppet
packages for clients registered to Satellite Server.
Procedure
In the Satellite web UI, navigate to Content > Sync Status.
A list of product repositories available for synchronization is displayed.
- Click the arrow next to the Red Hat Enterprise Linux Server product to view available content.
- Select Satellite Tools 6.7 (for RHEL 7 Server) RPMs x86_64.
- Click Synchronize Now.
For CLI Users
Synchronize your Satellite Tools 6.7 repository using the
hammer repository synchronize
command:# hammer repository synchronize --organization "initial_organization_name" \ --product 'Red Hat Enterprise Linux Server' \ --name 'Red Hat Satellite Tools 6.7 for RHEL 7 Server RPMs x86_64' \ --async
3.5. Enabling Power Management on Managed Hosts
To perform power management tasks on managed hosts using the intelligent platform management interface (IPMI) or a similar protocol, you must enable the baseboard management controller (BMC) module on Satellite Server.
Prerequisites
- All managed hosts must have a network interface of BMC type. Satellite Server uses this NIC to pass the appropriate credentials to the host. For more information, see Adding a Baseboard Management Controller (BMC) Interface in Managing Hosts.
Procedure
To enable BMC, enter the following command:
# satellite-installer --foreman-proxy-bmc "true" \ --foreman-proxy-bmc-default-provider "freeipmi"
3.6. Configuring DNS, DHCP, and TFTP on Satellite Server
To configure the DNS, DHCP, and TFTP services on Satellite Server, use the satellite-installer
command with the options appropriate for your environment. To view a complete list of configurable options, enter the satellite-installer --scenario satellite --help
command.
Any changes to the settings require entering the satellite-installer
command again. You can enter the command multiple times and each time it updates all configuration files with the changed values.
To use external DNS, DHCP, and TFTP services instead, see Chapter 4, Configuring Satellite Server with External Services.
Adding Multihomed DHCP details
If you want to use Multihomed DHCP, you must update the network interface file.
In the
/etc/systemd/system/dhcpd.service.d/interfaces.conf
file, edit the following line to add Multihomed DHCP:[Service] ExecStart=/usr/sbin/dhcpd -f -cf /etc/dhcp/dhcpd.conf -user dhcpd -group dhcpd --no-pid eth0 eth1 eth2
If this file does not exist already, create it.
Enter the following command to perform a daemon reload:
# systemctl --system daemon-reload
Enter the following command to restart the dhcpd service:
# systemctl restart dhcpd.service
Prerequisites
Ensure that the following information is available to you:
- DHCP IP address ranges
- DHCP gateway IP address
- DHCP nameserver IP address
- DNS information
- TFTP server name
- Use the FQDN instead of the IP address where possible in case of network changes.
- Contact your network administrator to ensure that you have the correct settings.
Procedure
Enter the
satellite-installer
command with the options appropriate for your environment. The following example shows configuring full provisioning services:# satellite-installer --scenario satellite \ --foreman-proxy-dns true \ --foreman-proxy-dns-managed true \ --foreman-proxy-dns-interface eth0 \ --foreman-proxy-dns-zone example.com \ --foreman-proxy-dns-reverse 2.0.192.in-addr.arpa \ --foreman-proxy-dhcp true \ --foreman-proxy-dhcp-managed true \ --foreman-proxy-dhcp-interface eth0 \ --foreman-proxy-dhcp-range "192.0.2.100 192.0.2.150" \ --foreman-proxy-dhcp-gateway 192.0.2.1 \ --foreman-proxy-dhcp-nameservers 192.0.2.2 \ --foreman-proxy-tftp true \ --foreman-proxy-tftp-managed true \ --foreman-proxy-tftp-servername 192.0.2.3
You can monitor the progress of the satellite-installer
command displayed in your prompt. You can view the logs in /var/log/foreman-installer/satellite.log
. You can view the settings used, including the initial_admin_password
parameter, in the /etc/foreman-installer/scenarios.d/satellite-answers.yaml
file.
For more information about configuring DHCP, DNS, and TFTP services, see the Configuring Network Services section in the Provisioning Guide.
3.7. Disabling DNS, DHCP, and TFTP for Unmanaged Networks
If you want to manage TFTP, DHCP, and DNS services manually, you must prevent Satellite from maintaining these services on the operating system and disable orchestration to avoid DHCP and DNS validation errors. However, Satellite does not remove the back-end services on the operating system.
Procedure
On Satellite Server, enter the following command:
# satellite-installer --foreman-proxy-dhcp false \ --foreman-proxy-dns false \ --foreman-proxy-tftp false
- In the Satellite web UI, navigate to Infrastructure > Subnets and select a subnet.
- Click the Capsules tab and clear the DHCP Capsule, TFTP Capsule, and Reverse DNS Capsule fields.
- Navigate to Infrastructure > Domains and select a domain.
- Clear the DNS Capsule field.
Optional: If you use a DHCP service supplied by a third party, configure your DHCP server to pass the following options:
Option 66: IP address of Satellite or Capsule Option 67: /pxelinux.0
For more information about DHCP options, see RFC 2132.
Satellite 6 does not perform orchestration when a Capsule is not set for a given subnet and domain. When enabling or disabling Capsule associations, orchestration commands for existing hosts can fail if the expected records and configuration files are not present. When associating a Capsule to turn orchestration on, make sure the required DHCP and DNS records as well as the TFTP files are in place for the existing Satellite hosts in order to prevent host deletion failures in the future.
3.8. Configuring Satellite Server for Outgoing Emails
To send email messages from Satellite Server, you can use either an SMTP server, or the sendmail
command.
Prerequisites
If you have upgraded from a previous release, rename or remove the configuration file
/usr/share/foreman/config/email.yaml
and restart thehttpd
service. For example:# mv /usr/share/foreman/config/email.yaml \ /usr/share/foreman/config/email.yaml-backup # systemctl restart httpd
Procedure
- In the Satellite web UI, navigate to Administer → Settings.
Click the Email tab and set the configuration options to match your preferred delivery method. The changes have an immediate effect.
The following example shows the configuration options for using an SMTP server:
Table 3.1. Using an SMTP server as a delivery method Name Example value Delivery method
SMTP
SMTP address
smtp.example.com
SMTP authentication
login
SMTP HELO/EHLO domain
example.com
SMTP password
password
SMTP port
25
SMTP username
user@example.com
The
SMTP username
andSMTP password
specify the login credentials for the SMTP server.The following example uses gmail.com as an SMTP server:
Table 3.2. Using gmail.com as an SMTP server Name Example value Delivery method
SMTP
SMTP address
smtp.gmail.com
SMTP authentication
plain
SMTP HELO/EHLO domain
smtp.gmail.com
SMTP enable StartTLS auto
Yes
SMTP password
password
SMTP port
587
SMTP username
user@gmail.com
The following example uses the
sendmail
command as a delivery method:Table 3.3. Using sendmail as a delivery method Name Example value Delivery method
Sendmail
Sendmail arguments
-i -t -G
The
Sendmail arguments
specify the options passed to thesendmail
command. The default value is-i -t
. For more information see the sendmail 1 man page.
If you decide to send email using an SMTP server which uses TLS authentication, also perform one of the following steps:
Mark the CA certificate of the SMTP server as trusted. To do so, execute the following commands on Satellite Server:
# cp mailca.crt /etc/pki/ca-trust/source/anchors/ # update-ca-trust enable # update-ca-trust
Where
mailca.crt
is the CA certificate of the SMTP server.-
Alternatively, in the web UI, set the
SMTP enable StartTLS auto
option toNo
.
-
Click Test email to send a test message to the user’s email address to confirm the configuration is working. If a message fails to send, the web UI displays an error. See the log at
/var/log/foreman/production.log
for further details.
For information on configuring email notifications for individual users or user groups, see Configuring Email Notifications in Administering Red Hat Satellite.
3.9. Configuring Satellite Server with a Custom SSL Certificate
By default, Red Hat Satellite 6 uses a self-signed SSL certificate to enable encrypted communications between Satellite Server, external Capsule Servers, and all hosts. If you cannot use a Satellite self-signed certificate, you can configure Satellite Server to use an SSL certificate signed by an external Certificate Authority.
To configure your Satellite Server with a custom certificate, complete the following procedures:
- Section 3.9.1, “Creating a Custom SSL Certificate for Satellite Server”
- Section 3.9.2, “Deploying a Custom SSL Certificate to Satellite Server”
- Section 3.9.3, “Deploying a Custom SSL Certificate to Hosts”
- If you have external Capsule Servers registered to Satellite Server, you must configure them with custom SSL certificates. For more information, see Configuring Capsule Server with a Custom SSL Certificate in Installing Capsule Server.
3.9.1. Creating a Custom SSL Certificate for Satellite Server
Use this procedure to create a custom SSL certificate for Satellite Server. If you already have a custom SSL certificate for Satellite Server, skip this procedure.
When you configure Satellite Server with custom certificates, note the following considerations:
- You must use the Privacy-Enhanced Mail (PEM) encoding for the SSL certificates.
- You cannot use the same certificate for both Satellite Server and Capsule Server.
- The same Certificate Authority must sign certificates for Satellite Server and Capsule Server.
Procedure
To create a custom SSL certificate, complete the following steps:
To store all the source certificate files, create a directory that is accessible only to the
root
user.# mkdir /root/satellite_cert
Create a private key with which to sign the Certificate Signing Request (CSR).
Note that the private key must be unencrypted. If you use a password-protected private key, remove the private key password.
If you already have a private key for this Satellite Server, skip this step.
# openssl genrsa -out
/root/satellite_cert/satellite_cert_key.pem
4096Create the
/root/satellite_cert/openssl.cnf
configuration file for the Certificate Signing Request (CSR) and include the following content:[ req ] req_extensions = v3_req distinguished_name = req_distinguished_name x509_extensions = usr_cert prompt = no [ req_distinguished_name ] 1 C = Country Name (2 letter code) ST = State or Province Name (full name) L = Locality Name (eg, city) O = Organization Name (eg, company) OU = The division of your organization handling the certificate CN = satellite.example.com 2 [ v3_req ] basicConstraints = CA:FALSE keyUsage = digitalSignature, nonRepudiation, keyEncipherment, dataEncipherment extendedKeyUsage = serverAuth, clientAuth, codeSigning, emailProtection subjectAltName = @alt_names [ usr_cert ] basicConstraints=CA:FALSE nsCertType = client, server, email keyUsage = nonRepudiation, digitalSignature, keyEncipherment extendedKeyUsage = serverAuth, clientAuth, codeSigning, emailProtection nsComment = "OpenSSL Generated Certificate" subjectKeyIdentifier=hash authorityKeyIdentifier=keyid,issuer [ alt_names ] DNS.1 = satellite.example.com 3
- 1
- In the
[ req_distinguished_name ]
section, enter information about your organization. - 2
- Set the certificate’s Common Name
CN
to match the fully qualified domain name (FQDN) of your Satellite Server. To confirm a FQDN, on that Satellite Server, enter thehostname -f
command. This is required to ensure that thekatello-certs-check
command validates the certificate correctly. - 3
- Set the Subject Alternative Name (SAN)
DNS.1
to match the fully qualified domain name (FQDN) of your server.
Generate the Certificate Signing Request (CSR):
# openssl req -new \ -key /root/satellite_cert/satellite_cert_key.pem \ 1 -config /root/satellite_cert/openssl.cnf \ 2 -out /root/satellite_cert/satellite_cert_csr.pem 3
Send the certificate signing request to the Certificate Authority. The same Certificate Authority must sign certificates for Satellite Server and Capsule Server.
When you submit the request, specify the lifespan of the certificate. The method for sending the certificate request varies, so consult the Certificate Authority for the preferred method. In response to the request, you can expect to receive a Certificate Authority bundle and a signed certificate, in separate files.
3.9.2. Deploying a Custom SSL Certificate to Satellite Server
Use this procedure to configure your Satellite Server to use a custom SSL certificate signed by a Certificate Authority. The katello-certs-check
command validates the input certificate files and returns the commands necessary to deploy a custom SSL certificate to Satellite Server.
Procedure
To deploy a custom certificate on your Satellite Server, complete the following steps:
Validate the custom SSL certificate input files. Note that for the
katello-certs-check
command to work correctly, Common Name (CN) in the certificate must match the FQDN of Satellite Server.# katello-certs-check \ -c /root/satellite_cert/satellite_cert.pem \ 1 -k /root/satellite_cert/satellite_cert_key.pem \ 2 -b /root/satellite_cert/ca_cert_bundle.pem 3
If the command is successful, it returns two
satellite-installer
commands, one of which you must use to deploy a certificate to Satellite Server.Example output of
katello-certs-check
Validation succeeded. To install the Red Hat Satellite Server with the custom certificates, run: satellite-installer --scenario satellite \ --certs-server-cert "/root/satellite_cert/satellite_cert.pem" \ --certs-server-key "/root/satellite_cert/satellite_cert_key.pem" \ --certs-server-ca-cert "/root/satellite_cert/ca_cert_bundle.pem" To update the certificates on a currently running Red Hat Satellite installation, run: satellite-installer --scenario satellite \ --certs-server-cert "/root/satellite_cert/satellite_cert.pem" \ --certs-server-key "/root/satellite_cert/satellite_cert_key.pem" \ --certs-server-ca-cert "/root/satellite_cert/ca_cert_bundle.pem" \ --certs-update-server --certs-update-server-ca
From the output of the
katello-certs-check
command, depending on your requirements, enter thesatellite-installer
command that installs a new Satellite with custom SSL certificates or updates certificates on a currently running Satellite.If you are unsure which command to run, you can verify that Satellite is installed by checking if the file
/etc/foreman-installer/scenarios.d/.installed
exists. If the file exists, run the secondsatellite-installer
command that updates certificates.ImportantDo not delete the certificate archive file after you deploy the certificate. It is required, for example, when upgrading Satellite Server.
-
On a computer with network access to Satellite Server, navigate to the following URL:
https://satellite.example.com
. - In your browser, view the certificate details to verify the deployed certificate.
3.9.3. Deploying a Custom SSL Certificate to Hosts
After you configure Satellite Server to use a custom SSL certificate, you must also install the katello-ca-consumer
package on every host that is registered to this Satellite Server.
Procedure
On each host, install the
katello-ca-consumer
package:# yum localinstall \ http://satellite.example.com/pub/katello-ca-consumer-latest.noarch.rpm
3.10. Using External Databases with Satellite
As part of the installation process for Red Hat Satellite, the satellite-installer command installs MongoDB and PostgreSQL databases on the same server as Satellite. In certain Satellite deployments, using external databases instead of the default local databases can help with the server load. Depending on your requirements, you can use external databases for either MongoDB or PostgreSQL database, or both.
Red Hat does not provide support or tools for external database maintenance. This includes backups, upgrades, and database tuning. You must have your own database administrator to support and maintain external databases.
Use MongoDB as an External Database Considerations and PostgreSQL as an External Database Considerations to decide if you want to use external databases for your Satellite deployment.
To create and use external databases for Satellite, you must complete the following procedures:
- Section 3.10.3, “Preparing a Host for External Databases”. Prepare a Red Hat Enterprise Linux 7 server to host the external databases.
-
Section 3.10.4, “Installing MongoDB”. Prepare MongoDB with user
pulp
owning thepulp_database
- Section 3.10.5, “Installing PostgreSQL”. Prepare PostgreSQL with databases for Satellite and Candlepin and dedicated users owning them.
-
Section 3.10.6, “Configuring Satellite to use External Databases”. Edit the parameters of
satellite-installer
to point to the new databases, and runsatellite-installer
.
3.10.1. MongoDB as an External Database Considerations
Pulp uses the MongoDB database. If you want to use MongoDB as an external database, the following information can help you decide if this option is right for your Satellite configuration. Satellite supports MongoDB version 3.4.
Advantages of External MongoDB
- Increase in free memory and free CPU on Satellite
- Flexibility to tune the MongoDB server’s system without adversely affecting Satellite operations
Disadvantages of External MongoDB
- Increase in deployment complexity that can make troubleshooting more difficult
- An external MongoDB server is an additional system to patch and maintain
- If either the Satellite or the Mongo database server suffers a hardware or storage failure, Satellite is not operational
- If there is latency between the Satellite and the external database server, performance can suffer
FIPS-related Restrictions
- You cannot use an external MongoDB with Satellite in FIPS mode.
3.10.2. PostgreSQL as an External Database Considerations
Foreman, Katello, and Candlepin use the PostgreSQL database. If you want to use PostgreSQL as an external database, the following information can help you decide if this option is right for your Satellite configuration. Satellite supports PostgreSQL version 9.2.
Advantages of External PostgreSQL:
- Increase in free memory and free CPU on Satellite
-
Flexibility to set
shared_buffers
on the PostgreSQL database to a high number without the risk of interfering with other services on Satellite - Flexibility to tune the PostgreSQL server’s system without adversely affecting Satellite operations
Disadvantages of External PostgreSQL
- Increase in deployment complexity that can make troubleshooting more difficult
- The external PostgreSQL server is an additional system to patch and maintain
- If either Satellite or the PostgreSQL database server suffers a hardware or storage failure, Satellite is not operational
- If there is latency between the Satellite server and database server, performance can suffer
If you suspect that the PostgreSQL database on your Satellite is causing performance problems, use the information in Satellite 6: How to enable postgres query logging to detect slow running queries to determine if you have slow queries. Queries that take longer than one second are typically caused by performance issues with large installations, and moving to an external database might not help. If you have slow queries, contact Red Hat Support.
3.10.3. Preparing a Host for External Databases
Install a freshly provisioned system with the latest Red Hat Enterprise Linux 7 server to host the external databases.
Subscriptions for Red Hat Software Collections and Red Hat Enterprise Linux do not provide the correct service level agreement for using Satellite with external databases. You must also attach a Satellite subscription to the base operating system that you want to use for the external databases.
Prerequisites
- The Red Hat Enterprise Linux 7 server must meet Satellite’s Storage Requirements.
Procedure
- Use the instructions in Attaching the Satellite Infrastructure Subscription to attach a Satellite subscription to your server.
Disable all repositories and enable only the following repositories:
# subscription-manager repos --disable '*' # subscription-manager repos --enable=rhel-server-rhscl-7-rpms \ --enable=rhel-7-server-rpms
3.10.4. Installing MongoDB
You can install only the same version of MongoDB that is installed with the satellite-installer
tool during an internal database installation. You can install MongoDB using Red Hat Software Collections (RHSCL) repositories or from an external source, as long as the version is supported. Satellite supports MongoDB version 3.4.
Procedure
To install MongoDB, enter the following command:
# yum install rh-mongodb34 rh-mongodb34-syspaths
Start and enable the rh-mongodb34 service:
# systemctl start rh-mongodb34-mongod # systemctl enable rh-mongodb34-mongod
Create a Pulp user on MongoDB for database pulp_database:
# mongo pulp_database \ --eval "db.createUser({user:'pulp',pwd:'pulp_password',roles:[{role:'dbOwner', db:'pulp_database'},{ role: 'readWrite', db: 'pulp_database'}]})"
In the
/etc/opt/rh/rh-mongodb34/mongod.conf
file, specify the bind IP:bindIp: your_mongodb_server_bind_IP,::1
Edit the
/etc/opt/rh/rh-mongodb34/mongod.conf
file to enable authentication in thesecurity
section:security: authorization: enabled
Restart the
rh-mongodb34-mongod
service:# systemctl restart rh-mongodb34-mongod
Open port 27017 for MongoDB:
# firewall-cmd --add-port=27017/tcp # firewall-cmd --runtime-to-permanent
From Satellite Server, test that you can access the database. If the connection succeeds, the command returns
1
.# scl enable rh-mongodb34 " mongo --host mongo.example.com \ -u pulp -p pulp_password --port 27017 --eval 'ping:1' pulp_database"
3.10.5. Installing PostgreSQL
You can install only the same version of PostgreSQL that is installed with the satellite-installer
tool during an internal database installation. You can install PostgreSQL using Red Hat Enterprise Linux Server 7 repositories or from an external source, as long as the version is supported. Satellite supports PostgreSQL version 9.2.
Procedure
To install PostgreSQL, enter the following command:
# yum install postgresql-server
To initialize, start, and enable PostgreSQL service, enter the following commands:
# postgresql-setup initdb # systemctl start postgresql # systemctl enable postgresql
Edit the
/var/lib/pgsql/data/postgresql.conf
file:# vi /var/lib/pgsql/data/postgresql.conf
Remove the
#
and edit to listen to inbound connections:listen_addresses = '*'
Edit the
/var/lib/pgsql/data/pg_hba.conf
file:# vi /var/lib/pgsql/data/pg_hba.conf
Add the following line to the file:
host all all Satellite_ip/24 md5
Restart PostgreSQL service to update with the changes:
# systemctl restart postgresql
Open the postgresql port on the external PostgreSQL server:
# firewall-cmd --add-service=postgresql # firewall-cmd --runtime-to-permanent
Switch to the
postgres
user and start the PostgreSQL client:$ su - postgres -c psql
Create two databases and dedicated roles, one for Satellite and one for Candlepin:
CREATE USER "foreman" WITH PASSWORD 'Foreman_Password'; CREATE USER "candlepin" WITH PASSWORD 'Candlepin_Password'; CREATE DATABASE foreman OWNER foreman; CREATE DATABASE candlepin OWNER candlepin;
Exit the
postgres
user:# \q
From Satellite Server, test that you can access the database. If the connection succeeds, the commands return
1
.# PGPASSWORD='Foreman_Password' psql -h postgres.example.com -p 5432 -U foreman -d foreman -c "SELECT 1 as ping" # PGPASSWORD='Candlepin_Password' psql -h postgres.example.com -p 5432 -U candlepin -d candlepin -c "SELECT 1 as ping"
3.10.6. Configuring Satellite to use External Databases
Use the satellite-installer
command to configure Satellite to connect to external MongoDB and PostgreSQL databases.
Prerequisites
- You have installed and configured MongoDB and PostgreSQL databases on a Red Hat Enterprise Linux server.
Procedure
To configure the external databases for Satellite, enter the following command:
satellite-installer --scenario satellite \ --foreman-db-host postgres.example.com \ --foreman-db-password Foreman_Password \ --foreman-db-database foreman \ --katello-candlepin-db-host postgres.example.com \ --katello-candlepin-db-name candlepin \ --katello-candlepin-db-password Candlepin_Password \ --katello-candlepin-manage-db false \ --katello-pulp-db-username pulp \ --katello-pulp-db-password pulp_password \ --katello-pulp-db-seeds mongo.example.com:27017 \ --katello-pulp-db-name pulp_database
Verify the status of the databases:
For PostgreSQL, enter the following command:
# satellite-maintain service status --only postgresql
For MongoDB, enter the following command:
# satellite-maintain service status --only rh-mongodb34-mongod
3.11. Restricting Access to mongod
To reduce the risk of data loss, configure only the apache
and root
users to have access to the MongoDB database daemon, mongod
.
To restrict access to mongod
on your Satellite Server, you must update your firewall configuration.
Procedure
Update the firewall configuration by entering the following command:
# firewall-cmd --direct --add-rule ipv4 filter OUTPUT 0 -o lo -p \ tcp -m tcp --dport 27017 -m owner --uid-owner apache -j ACCEPT \ && firewall-cmd --direct --add-rule ipv6 filter OUTPUT 0 -o lo -p \ tcp -m tcp --dport 27017 -m owner --uid-owner apache -j ACCEPT \ && firewall-cmd --direct --add-rule ipv4 filter OUTPUT 0 -o lo -p \ tcp -m tcp --dport 27017 -m owner --uid-owner root -j ACCEPT \ && firewall-cmd --direct --add-rule ipv6 filter OUTPUT 0 -o lo -p \ tcp -m tcp --dport 27017 -m owner --uid-owner root -j ACCEPT \ && firewall-cmd --direct --add-rule ipv4 filter OUTPUT 1 -o lo -p \ tcp -m tcp --dport 27017 -j DROP \ && firewall-cmd --direct --add-rule ipv6 filter OUTPUT 1 -o lo -p \ tcp -m tcp --dport 27017 -j DROP \ && firewall-cmd --direct --add-rule ipv4 filter OUTPUT 0 -o lo -p \ tcp -m tcp --dport 28017 -m owner --uid-owner apache -j ACCEPT \ && firewall-cmd --direct --add-rule ipv6 filter OUTPUT 0 -o lo -p \ tcp -m tcp --dport 28017 -m owner --uid-owner apache -j ACCEPT \ && firewall-cmd --direct --add-rule ipv4 filter OUTPUT 0 -o lo -p \ tcp -m tcp --dport 28017 -m owner --uid-owner root -j ACCEPT \ && firewall-cmd --direct --add-rule ipv6 filter OUTPUT 0 -o lo -p \ tcp -m tcp --dport 28017 -m owner --uid-owner root -j ACCEPT \ && firewall-cmd --direct --add-rule ipv4 filter OUTPUT 1 -o lo -p \ tcp -m tcp --dport 28017 -j DROP \ && firewall-cmd --direct --add-rule ipv6 filter OUTPUT 1 -o lo -p \ tcp -m tcp --dport 28017 -j DROP
Make the changes persistent:
# firewall-cmd --runtime-to-permanent
3.12. Tuning Satellite Server with Predefined Profiles
If your Satellite deployment includes more than 5000 hosts, you can use predefined tuning profiles to improve the performance of Satellite Server.
You can choose one of the profiles depending on the number of hosts your Satellite manages and available hardware resources. The tuning profiles are available in the /usr/share/foreman-installer/config/foreman.hiera/tuning/sizes
directory.
- default
Number of managed hosts: 0-5000
RAM: 20G
Number of CPU cores: 4
- medium
Number of managed hosts: 5001-10000
RAM: 32G
Number of CPU cores: 8
- large
Number of managed hosts: 10001-20000
RAM: 64G
Number of CPU cores: 16
- extra-large
Number of managed hosts: 20001-60000
RAM: 128G
Number of CPU cores: 32
- extra-extra-large
Number of managed hosts: 60000+
RAM: 256G
Number of CPU cores: 48+
Procedure
To configure a tuning profile for your Satellite deployment, enter the
satellite-installer
command with the--tuning
option. For example, to apply the medium tuning profile settings, enter the following command:# satellite-installer --tuning medium
Chapter 4. Configuring Satellite Server with External Services
If you do not want to configure the DNS, DHCP, and TFTP services on Satellite Server, use this section to configure your Satellite Server to work with external DNS, DHCP and TFTP services.
4.1. Configuring Satellite Server with External DNS
You can configure Satellite Server with external DNS. Satellite Server uses the nsupdate
utility to update DNS records on the remote server.
To make any changes persistent, you must enter the satellite-installer
command with the options appropriate for your environment.
Prerequisites
- You must have a configured external DNS server.
Procedure
Install the
bind-utils
package:# yum install bind bind-utils
Copy the
/etc/rndc.key
file from the external DNS server to Satellite Server:# scp root@dns.example.com:/etc/rndc.key /etc/rndc.key
Configure the ownership, permissions, and SELinux context:
# restorecon -v /etc/rndc.key # chown -v root:named /etc/rndc.key # chmod -v 640 /etc/rndc.key
To test the
nsupdate
utility, add a host remotely:# echo -e "server DNS_IP_Address\n \ update add aaa.virtual.lan 3600 IN A Host_IP_Address\n \ send\n" | nsupdate -k /etc/rndc.key # nslookup aaa.virtual.lan DNS_IP_Address # echo -e "server DNS_IP_Address\n \ update delete aaa.virtual.lan 3600 IN A Host_IP_Address\n \ send\n" | nsupdate -k /etc/rndc.key
Assign the
foreman-proxy
user to thenamed
group manually. Normally, satellite-installer ensures that theforeman-proxy
user belongs to thenamed
UNIX group, however, in this scenario Satellite does not manage users and groups, therefore you need to assign theforeman-proxy
user to thenamed
group manually.# usermod -a -G named foreman-proxy
Enter the
satellite-installer
command to make the following persistent changes to the/etc/foreman-proxy/settings.d/dns.yml
file:# satellite-installer --foreman-proxy-dns=true \ --foreman-proxy-dns-managed=false \ --foreman-proxy-dns-provider=nsupdate \ --foreman-proxy-dns-server="DNS_IP_Address" \ --foreman-proxy-keyfile=/etc/rndc.key \ --foreman-proxy-dns-ttl=86400
Restart the foreman-proxy service:
# systemctl restart foreman-proxy
- Log in to the Satellite Server web UI.
- Navigate to Infrastructure > Capsules, locate the Satellite Server, and from the list in the Actions column, select Refresh.
- Associate the DNS service with the appropriate subnets and domain.
4.2. Configuring Satellite Server with External DHCP
To configure Satellite Server with external DHCP, you must complete the following procedures:
4.2.1. Configuring an External DHCP Server to Use with Satellite Server
To configure an external DHCP server to use with Satellite Server, on a Red Hat Enterprise Linux server, you must install the ISC DHCP Service and Berkeley Internet Name Domain (BIND) packages. You must also share the DHCP configuration and lease files with Satellite Server. The example in this procedure uses the distributed Network File System (NFS) protocol to share the DHCP configuration and lease files.
If you use dnsmasq as an external DHCP server, enable the dhcp-no-override
setting. This is required because Satellite creates configuration files on the TFTP server under the grub2/
subdirectory. If the dhcp-no-override
setting is disabled, clients fetch the bootloader and its configuration from the root directory, which might cause an error.
Procedure
On a Red Hat Enterprise Linux Server server, install the ISC DHCP Service and Berkeley Internet Name Domain (BIND) packages:
# yum install dhcp bind
Generate a security token:
# dnssec-keygen -a HMAC-MD5 -b 512 -n HOST omapi_key
As a result, a key pair that consists of two files is created in the current directory.
Copy the secret hash from the key:
# cat Komapi_key.+*.private |grep ^Key|cut -d ' ' -f2
Edit the
dhcpd
configuration file for all of the subnets and add the key. The following is an example:# cat /etc/dhcp/dhcpd.conf default-lease-time 604800; max-lease-time 2592000; log-facility local7; subnet 192.168.38.0 netmask 255.255.255.0 { range 192.168.38.10 192.168.38.100; option routers 192.168.38.1; option subnet-mask 255.255.255.0; option domain-search "virtual.lan"; option domain-name "virtual.lan"; option domain-name-servers 8.8.8.8; } omapi-port 7911; key omapi_key { algorithm HMAC-MD5; secret "jNSE5YI3H1A8Oj/tkV4...A2ZOHb6zv315CkNAY7DMYYCj48Umw=="; }; omapi-key omapi_key;
Note that the
option routers
value is the Satellite or Capsule IP address that you want to use with an external DHCP service.- Delete the two key files from the directory that they were created in.
On Satellite Server, define each subnet. Do not set DHCP Capsule for the defined Subnet yet.
To prevent conflicts, set up the lease and reservation ranges separately. For example, if the lease range is 192.168.38.10 to 192.168.38.100, in the Satellite web UI define the reservation range as 192.168.38.101 to 192.168.38.250.
Configure the firewall for external access to the DHCP server:
# firewall-cmd --add-service dhcp \ && firewall-cmd --runtime-to-permanent
On Satellite Server, determine the UID and GID of the
foreman
user:# id -u foreman 993 # id -g foreman 990
On the DHCP server, create the
foreman
user and group with the same IDs as determined in a previous step:# groupadd -g 990 foreman # useradd -u 993 -g 990 -s /sbin/nologin foreman
To ensure that the configuration files are accessible, restore the read and execute flags:
# chmod o+rx /etc/dhcp/ # chmod o+r /etc/dhcp/dhcpd.conf # chattr +i /etc/dhcp/ /etc/dhcp/dhcpd.conf
Start the DHCP service:
# systemctl start dhcpd
Export the DHCP configuration and lease files using NFS:
# yum install nfs-utils # systemctl enable rpcbind nfs-server # systemctl start rpcbind nfs-server nfs-lock nfs-idmapd
Create directories for the DHCP configuration and lease files that you want to export using NFS:
# mkdir -p /exports/var/lib/dhcpd /exports/etc/dhcp
To create mount points for the created directories, add the following line to the
/etc/fstab
file:/var/lib/dhcpd /exports/var/lib/dhcpd none bind,auto 0 0 /etc/dhcp /exports/etc/dhcp none bind,auto 0 0
Mount the file systems in
/etc/fstab
:# mount -a
Ensure the following lines are present in
/etc/exports
:/exports 192.168.38.1(rw,async,no_root_squash,fsid=0,no_subtree_check) /exports/etc/dhcp 192.168.38.1(ro,async,no_root_squash,no_subtree_check,nohide) /exports/var/lib/dhcpd 192.168.38.1(ro,async,no_root_squash,no_subtree_check,nohide)
Note that the IP address that you enter is the Satellite or Capsule IP address that you want to use with an external DHCP service.
Reload the NFS server:
# exportfs -rva
Configure the firewall for the DHCP omapi port 7911:
# firewall-cmd --add-port="7911/tcp" \ && firewall-cmd --runtime-to-permanent
Optional: Configure the firewall for external access to NFS. Clients are configured using NFSv3.
# firewall-cmd --zone public --add-service mountd \ && firewall-cmd --zone public --add-service rpc-bind \ && firewall-cmd --zone public --add-service nfs \ && firewall-cmd --runtime-to-permanent
4.2.2. Configuring Satellite Server with an External DHCP Server
You can configure Satellite Server with an external DHCP server.
Prerequisite
- Ensure that you have configured an external DHCP server and that you have shared the DHCP configuration and lease files with Satellite Server. For more information, see Section 4.2.1, “Configuring an External DHCP Server to Use with Satellite Server”.
Procedure
Install the
nfs-utils
utility:# yum install nfs-utils
Create the DHCP directories for NFS:
# mkdir -p /mnt/nfs/etc/dhcp /mnt/nfs/var/lib/dhcpd
Change the file owner:
# chown -R foreman-proxy /mnt/nfs
Verify communication with the NFS server and the Remote Procedure Call (RPC) communication paths:
# showmount -e DHCP_Server_FQDN # rpcinfo -p DHCP_Server_FQDN
Add the following lines to the
/etc/fstab
file:DHCP_Server_FQDN:/exports/etc/dhcp /mnt/nfs/etc/dhcp nfs ro,vers=3,auto,nosharecache,context="system_u:object_r:dhcp_etc_t:s0" 0 0 DHCP_Server_FQDN:/exports/var/lib/dhcpd /mnt/nfs/var/lib/dhcpd nfs ro,vers=3,auto,nosharecache,context="system_u:object_r:dhcpd_state_t:s0" 0 0
Mount the file systems on
/etc/fstab
:# mount -a
To verify that the
foreman-proxy
user can access the files that are shared over the network, display the DHCP configuration and lease files:# su foreman-proxy -s /bin/bash bash-4.2$ cat /mnt/nfs/etc/dhcp/dhcpd.conf bash-4.2$ cat /mnt/nfs/var/lib/dhcpd/dhcpd.leases bash-4.2$ exit
Enter the
satellite-installer
command to make the following persistent changes to the/etc/foreman-proxy/settings.d/dhcp.yml
file:# satellite-installer --foreman-proxy-dhcp=true \ --foreman-proxy-dhcp-provider=remote_isc \ --foreman-proxy-plugin-dhcp-remote-isc-dhcp-config /mnt/nfs/etc/dhcp/dhcpd.conf \ --foreman-proxy-plugin-dhcp-remote-isc-dhcp-leases /mnt/nfs/var/lib/dhcpd/dhcpd.leases \ --foreman-proxy-plugin-dhcp-remote-isc-key-name=omapi_key \ --foreman-proxy-plugin-dhcp-remote-isc-key-secret=jNSE5YI3H1A8Oj/tkV4...A2ZOHb6zv315CkNAY7DMYYCj48Umw== \ --foreman-proxy-plugin-dhcp-remote-isc-omapi-port=7911 \ --enable-foreman-proxy-plugin-dhcp-remote-isc \ --foreman-proxy-dhcp-server=DHCP_Server_FQDN
Restart the
foreman-proxy
service:# systemctl restart foreman-proxy
- Log in to the Satellite Server web UI.
- Navigate to Infrastructure > Capsules, locate the Satellite Server, and from the list in the Actions column, select Refresh.
- Associate the DHCP service with the appropriate subnets and domain.
4.3. Configuring Satellite Server with External TFTP
You can configure Satellite Server with external TFTP services.
Procedure
Create the TFTP directory for NFS:
# mkdir -p /mnt/nfs/var/lib/tftpboot
In the
/etc/fstab
file, add the following line:TFTP_Server_IP_Address:/exports/var/lib/tftpboot /mnt/nfs/var/lib/tftpboot nfs rw,vers=3,auto,nosharecache,context="system_u:object_r:tftpdir_rw_t:s0" 0 0
Mount the file systems in
/etc/fstab
:# mount -a
Enter the
satellite-installer
command to make the following persistent changes to the/etc/foreman-proxy/settings.d/tftp.yml
file:# satellite-installer --foreman-proxy-tftp=true \ --foreman-proxy-tftp-root /mnt/nfs/var/lib/tftpboot
If the TFTP service is running on a different server than the DHCP service, update the
tftp_servername
setting with the FQDN or IP address of the server that the TFTP service is running on:# satellite-installer --foreman-proxy-tftp-servername=TFTP_Server_FQDN
- Log in to the Satellite Server web UI.
- Navigate to Infrastructure > Capsules, locate the Satellite Server, and from the list in the Actions column, select Refresh.
- Associate the TFTP service with the appropriate subnets and domain.
4.4. Configuring Satellite Server with External IdM DNS
When Satellite Server adds a DNS record for a host, it first determines which Capsule is providing DNS for that domain. It then communicates with the Capsule that is configured to provide DNS service for your deployment and adds the record. The hosts are not involved in this process. Therefore, you must install and configure the IdM client on the Satellite or Capsule that is currently configured to provide a DNS service for the domain you want to manage using the IdM server.
Satellite Server can be configured to use a Red Hat Identity Management (IdM) server to provide DNS service. For more information about Red Hat Identity Management, see the Linux Domain Identity, Authentication, and Policy Guide.
To configure Satellite Server to use a Red Hat Identity Management (IdM) server to provide DNS service, use one of the following procedures:
To revert to internal DNS service, use the following procedure:
You are not required to use Satellite Server to manage DNS. When you are using the realm enrollment feature of Satellite, where provisioned hosts are enrolled automatically to IdM, the ipa-client-install
script creates DNS records for the client. Configuring Satellite Server with external IdM DNS and realm enrollment are mutually exclusive. For more information about configuring realm enrollment, see External Authentication for Provisioned Hosts in Administering Red Hat Satellite.
4.4.1. Configuring Dynamic DNS Update with GSS-TSIG Authentication
You can configure the IdM server to use the generic security service algorithm for secret key transaction (GSS-TSIG) technology defined in RFC3645. To configure the IdM server to use the GSS-TSIG technology, you must install the IdM client on the Satellite Server base operating system.
Prerequisites
- You must ensure the IdM server is deployed and the host-based firewall is configured correctly. For more information, see Port Requirements in the Linux Domain Identity, Authentication, and Policy Guide.
- You must contact the IdM server administrator to ensure that you obtain an account on the IdM server with permissions to create zones on the IdM server.
- You must confirm whether Satellite Server or Capsule Server is configured to provide DNS service for your deployment.
- You must configure DNS, DHCP and TFTP services on the base operating system of either the Satellite or Capsule that is managing the DNS service for your deployment.
- You must create a backup of the answer file. You can use the backup to restore the answer file to its original state if it becomes corrupted. For more information, see Configuring Satellite Server.
Procedure
To configure dynamic DNS update with GSS-TSIG authentication, complete the following steps:
Creating a Kerberos Principal on the IdM Server
Obtain a Kerberos ticket for the account obtained from the IdM administrator:
# kinit idm_user
Create a new Kerberos principal for Satellite Server to use to authenticate on the IdM server.
# ipa service-add satellite.example.com
Installing and Configuring the IdM Client
On the base operating system of either the Satellite or Capsule that is managing the DNS service for your deployment, install the
ipa-client
package:On Satellite Server, enter the following command:
# yum install ipa-client
On Capsule Server, enter the following command:
# yum install ipa-client
Configure the IdM client by running the installation script and following the on-screen prompts:
# ipa-client-install
Obtain a Kerberos ticket:
# kinit admin
Remove any preexisting
keytab
:# rm /etc/foreman-proxy/dns.keytab
Obtain the
keytab
for this system:# ipa-getkeytab -p capsule/satellite.example.com@EXAMPLE.COM \ -s idm1.example.com -k /etc/foreman-proxy/dns.keytab
NoteWhen adding a keytab to a standby system with the same host name as the original system in service, add the
r
option to prevent generating new credentials and rendering the credentials on the original system invalid.For the
dns.keytab
file, set the group and owner toforeman-proxy
:# chown foreman-proxy:foreman-proxy /etc/foreman-proxy/dns.keytab
Optional: To verify that the
keytab
file is valid, enter the following command:# kinit -kt /etc/foreman-proxy/dns.keytab \ capsule/satellite.example.com@EXAMPLE.COM
Configuring DNS Zones in the IdM web UI
Create and configure the zone that you want to manage:
- Navigate to Network Services > DNS > DNS Zones.
-
Select Add and enter the zone name. For example,
example.com
. - Click Add and Edit.
Click the Settings tab and in the BIND update policy box, add the following to the semi-colon separated list:
grant capsule/047satellite.example.com@EXAMPLE.COM wildcard * ANY;
- Set Dynamic update to True.
- Enable Allow PTR sync.
- Click Save to save the changes.
Create and configure the reverse zone:
- Navigate to Network Services > DNS > DNS Zones.
- Click Add.
- Select Reverse zone IP network and add the network address in CIDR format to enable reverse lookups.
- Click Add and Edit.
Click the Settings tab and in the BIND update policy box, add the following to the semi-colon separated list:
grant capsule\047satellite.example.com@EXAMPLE.COM wildcard * ANY;
- Set Dynamic update to True.
- Click Save to save the changes.
Configuring the Satellite or Capsule Server that Manages the DNS Service for the Domain
Use the
satellite-installer
command to configure the Satellite or Capsule that manages the DNS Service for the domain:On Satellite, enter the following command:
satellite-installer --scenario satellite \ --foreman-proxy-dns=true \ --foreman-proxy-dns-managed=true \ --foreman-proxy-dns-provider=nsupdate_gss \ --foreman-proxy-dns-server="idm1.example.com" \ --foreman-proxy-dns-tsig-principal="capsule/satellite.example.com@EXAMPLE.COM" \ --foreman-proxy-dns-tsig-keytab=/etc/foreman-proxy/dns.keytab \ --foreman-proxy-dns-reverse="55.168.192.in-addr.arpa" \ --foreman-proxy-dns-zone=example.com \ --foreman-proxy-dns-ttl=86400
On Capsule, enter the following command:
satellite-installer --scenario capsule \ --foreman-proxy-dns=true \ --foreman-proxy-dns-managed=true \ --foreman-proxy-dns-provider=nsupdate_gss \ --foreman-proxy-dns-server="idm1.example.com" \ --foreman-proxy-dns-tsig-principal="capsule/satellite.example.com@EXAMPLE.COM" \ --foreman-proxy-dns-tsig-keytab=/etc/foreman-proxy/dns.keytab \ --foreman-proxy-dns-reverse="55.168.192.in-addr.arpa" \ --foreman-proxy-dns-zone=example.com \ --foreman-proxy-dns-ttl=86400
Restart the Satellite or Capsule’s Proxy Service.
# systemctl restart foreman-proxy
After you run the satellite-installer
command to make any changes to your Capsule configuration, you must update the configuration of each affected Capsule in the Satellite web UI.
Updating the Configuration in the Satellite web UI
- Navigate to Infrastructure > Capsules, locate the Satellite Server, and from the list in the Actions column, select Refresh.
Configure the domain:
- Navigate to Infrastructure > Domains and select the domain name.
- In the Domain tab, ensure DNS Capsule is set to the Capsule where the subnet is connected.
Configure the subnet:
- Navigate to Infrastructure > Subnets and select the subnet name.
- In the Subnet tab, set IPAM to None.
- In the Domains tab, select the domain that you want to manage using the IdM server.
- In the Capsules tab, ensure Reverse DNS Capsule is set to the Capsule where the subnet is connected.
- Click Submit to save the changes.
4.4.2. Configuring Dynamic DNS Update with TSIG Authentication
You can configure an IdM server to use the secret key transaction authentication for DNS (TSIG) technology that uses the rndc.key
key file for authentication. The TSIG protocol is defined in RFC2845.
Prerequisites
- You must ensure the IdM server is deployed and the host-based firewall is configured correctly. For more information, see Port Requirements in the Linux Domain Identity, Authentication, and Policy Guide.
-
You must obtain
root
user access on the IdM server. - You must confirm whether Satellite Server or Capsule Server is configured to provide DNS service for your deployment.
- You must configure DNS, DHCP and TFTP services on the base operating system of either the Satellite or Capsule that is managing the DNS service for your deployment.
- You must create a backup of the answer file. You can use the backup to restore the answer file to its original state if it becomes corrupted. For more information, see Configuring Satellite Server.
Procedure
To configure dynamic DNS update with TSIG authentication, complete the following steps:
Enabling External Updates to the DNS Zone in the IdM Server
On the IdM Server, add the following to the top of the
/etc/named.conf
file:include "/etc/rndc.key"; controls { inet IdM_Server_IP_Address port 953 allow { Satellite_IP_Address; } keys { "rndc-key"; }; };
Reload the
named
service to make the changes take effect:# systemctl reload named
In the IdM web UI, navigate to Network Services > DNS > DNS Zones and click the name of the zone. In the Settings tab, apply the following changes:
Add the following in the
BIND update policy
box:grant "rndc-key" zonesub ANY;
- Set Dynamic update to True.
- Click Update to save the changes.
Copy the
/etc/rndc.key
file from the IdM server to the base operating system of your Satellite Server. Enter the following command:# scp /etc/rndc.key root@satellite.example.com:/etc/rndc.key
To set the correct ownership, permissions, and SELinux context for the
rndc.key
file, enter the following command:# restorecon -v /etc/rndc.key # chown -v root:named /etc/rndc.key # chmod -v 640 /etc/rndc.key
Assign the
foreman-proxy
user to thenamed
group manually. Normally, satellite-installer ensures that theforeman-proxy
user belongs to thenamed
UNIX group, however, in this scenario Satellite does not manage users and groups, therefore you need to assign theforeman-proxy
user to thenamed
group manually.# usermod -a -G named foreman-proxy
On Satellite Server, enter the following
satellite-installer
command to configure Satellite to use the external DNS server:# satellite-installer --scenario satellite \ --foreman-proxy-dns=true \ --foreman-proxy-dns-managed=false \ --foreman-proxy-dns-provider=nsupdate \ --foreman-proxy-dns-server="IdM_Server_IP_Address" \ --foreman-proxy-keyfile=/etc/rndc.key \ --foreman-proxy-dns-ttl=86400
Testing External Updates to the DNS Zone in the IdM Server
Install the
bind-utils
utility:# yum install bind-utils
Ensure that the key in the
/etc/rndc.key
file on Satellite Server is the same key file that is used on the IdM server:key "rndc-key" { algorithm hmac-md5; secret "secret-key=="; };
On Satellite Server, create a test DNS entry for a host. For example, host
test.example.com
with an A record of192.168.25.20
on the IdM server at192.168.25.1
.# echo -e "server 192.168.25.1\n \ update add test.example.com 3600 IN A 192.168.25.20\n \ send\n" | nsupdate -k /etc/rndc.key
On Satellite Server, test the DNS entry:
# nslookup test.example.com 192.168.25.1 Server: 192.168.25.1 Address: 192.168.25.1#53 Name: test.example.com Address: 192.168.25.20
- To view the entry in the IdM web UI, navigate to Network Services > DNS > DNS Zones. Click the name of the zone and search for the host by name.
If resolved successfully, remove the test DNS entry:
# echo -e "server 192.168.25.1\n \ update delete test.example.com 3600 IN A 192.168.25.20\n \ send\n" | nsupdate -k /etc/rndc.key
Confirm that the DNS entry was removed:
# nslookup test.example.com 192.168.25.1
The above
nslookup
command fails and returns theSERVFAIL
error message if the record was successfully deleted.
4.4.3. Reverting to Internal DNS Service
You can revert to using Satellite Server and Capsule Server as your DNS providers. You can use a backup of the answer file that was created before configuring external DNS, or you can create a backup of the answer file. For more information about answer files, see Configuring Satellite Server.
Procedure
On the Satellite or Capsule Server that you want to configure to manage DNS service for the domain, complete the following steps:
Configuring Satellite or Capsule as a DNS Server
If you have created a backup of the answer file before configuring external DNS, restore the answer file and then enter the
satellite-installer
command:# satellite-installer
If you do not have a suitable backup of the answer file, create a backup of the answer file now. To configure Satellite or Capsule as DNS server without using an answer file, enter the following
satellite-installer
command on Satellite and each affected Capsule:# satellite-installer \ --foreman-proxy-dns=true \ --foreman-proxy-dns-managed=true \ --foreman-proxy-dns-provider=nsupdate \ --foreman-proxy-dns-server="127.0.0.1" \ --foreman-proxy-dns-tsig-principal="foremanproxy/satellite.example.com@EXAMPLE.COM" \ --foreman-proxy-dns-tsig-keytab=/etc/foreman-proxy/dns.keytab
For more information,see Configuring DNS, DHCP, and TFTP on Capsule Server.
After you run the satellite-installer
command to make any changes to your Capsule configuration, you must update the configuration of each affected Capsule in the Satellite web UI.
Updating the Configuration in the Satellite web UI
- Navigate to Infrastructure > Capsules.
- For each Capsule that you want to update, from the Actions list, select Refresh.
Configure the domain:
- Navigate to Infrastructure > Domains and click the domain name that you want to configure.
- In the Domain tab, set DNS Capsule to the Capsule where the subnet is connected.
Configure the subnet:
- Navigate to Infrastructure > Subnets and select the subnet name.
- In the Subnet tab, set IPAM to DHCP or Internal DB.
- In the Domains tab, select the domain that you want to manage using Satellite or Capsule.
- In the Capsules tab, set Reverse DNS Capsule to the Capsule where the subnet is connected.
- Click Submit to save the changes.
Appendix A. Applying Custom Configuration to Red Hat Satellite
When you install and configure Satellite for the first time using satellite-installer
, you can specify that the DNS and DHCP configuration files are not to be managed by Puppet using the installer flags --foreman-proxy-dns-managed=false
and --foreman-proxy-dhcp-managed=false
. If these flags are not specified during the initial installer run, rerunning of the installer overwrites all manual changes, for example, rerun for upgrade purposes. If changes are overwritten, you must run the restore procedure to restore the manual changes. For more information, see Appendix B, Restoring Manual Changes Overwritten by a Puppet Run.
To view all installer flags available for custom configuration, run satellite-installer --scenario satellite --full-help
. Some Puppet classes are not exposed to the Satellite installer. To manage them manually and prevent the installer from overwriting their values, specify the configuration values by adding entries to configuration file /etc/foreman-installer/custom-hiera.yaml
. This configuration file is in YAML format, consisting of one entry per line in the format of <puppet class>::<parameter name>: <value>
. Configuration values specified in this file persist across installer reruns.
Common examples include:
For Apache, to set the ServerTokens directive to only return the Product name:
apache::server_tokens: Prod
To turn off the Apache server signature entirely:
apache::server_signature: Off
For Pulp, to configure the number of pulp workers:
pulp::num_workers: 8
The Puppet modules for the Satellite installer are stored under /usr/share/foreman-installer/modules
. Check the .pp
files (for example: moduleName/manifests/example.pp) to look up the classes, parameters, and values. Alternatively, use the grep
command to do keyword searches.
Setting some values may have unintended consequences that affect the performance or functionality of Red Hat Satellite. Consider the impact of the changes before you apply them, and test the changes in a non-production environment first. If you do not have a non-production Satellite environment, run the Satellite installer with the --noop
and --verbose
options. If your changes cause problems, remove the offending lines from custom-hiera.yaml
and rerun the Satellite installer. If you have any specific questions about whether a particular value is safe to alter, contact Red Hat support.
Appendix B. Restoring Manual Changes Overwritten by a Puppet Run
If your manual configuration has been overwritten by a Puppet run, you can restore the files to the previous state. The following example shows you how to restore a DHCP configuration file overwritten by a Puppet run.
Procedure
Copy the file you intend to restore. This allows you to compare the files to check for any mandatory changes required by the upgrade. This is not common for DNS or DHCP services.
# cp /etc/dhcp/dhcpd.conf /etc/dhcp/dhcpd.backup
Check the log files to note down the md5sum of the overwritten file. For example:
# journalctl -xe ... /Stage[main]/Dhcp/File[/etc/dhcp/dhcpd.conf]: Filebucketed /etc/dhcp/dhcpd.conf to puppet with sum 622d9820b8e764ab124367c68f5fa3a1 ...
Restore the overwritten file:
# puppet filebucket restore --local --bucket \ /var/lib/puppet/clientbucket /etc/dhcp/dhcpd.conf \ 622d9820b8e764ab124367c68f5fa3a1
- Compare the backup file and the restored file, and edit the restored file to include any mandatory changes required by the upgrade.
Appendix C. Reverting Satellite to Download Content from Red Hat CDN
If your environment changes from disconnected to connected, you can reconfigure a disconnected Satellite to download content directly from the Red Hat CDN.
Procedure
- In the Satellite web UI, navigate to Content > Subscriptions.
- Click Manage Manifest.
Edit the Red Hat CDN URL field to point to the Red Hat CDN URL:
- Click Save.
Satellite Server is now configured to download content from the CDN the next time that it synchronizes repositories.