11.7. Using the VMware vSphere Cloud-init and Userdata Templates for Provisioning

Associating the userdata and Cloud-init Templates with the Operating System

1. In the Satellite web UI, navigate to Hosts > Operating Systems, and select the operating system that you want to use for provisioning.
2. Click the Template tab.
3. From the Cloud-init template list, select Cloudinit default.
4. From the User data template list, select UserData open-vm-tools.
5. Click Submit to save the changes.

1. On the virtual machine that you use to create the image, install cloud-init, open-vm-tools, and perl:

   # yum -y install cloud-init open-vm-tools perl

2. Create a configuration file for cloud-init:

   # vi /etc/cloud/cloud.cfg.d/example_cloud-init_config.cfg

3. Add the following information to the example_cloud_init_config.cfg file:

   datasource_list: [NoCloud]
   datasource:
     NoCloud:
       seedfrom: https://satellite.example.com/userdata/
   EOF

4. Enable the CA certificates for the image:

   # update-ca-trust enable

5. Download the katello-server-ca.crt file from Satellite Server:

   # wget -O /etc/pki/ca-trust/source/anchors/cloud-init-ca.crt http://satellite.example.com/pub/katello-server-ca.crt

6. To update the record of certificates, enter the following command:

   # update-ca-trust extract

7. Use the following commands to clean the image:

   # systemctl stop rsyslog
   # systemctl stop auditd
   # package-cleanup --oldkernels --count=1
   # yum clean all

8. Use the following commands to reduce logspace, remove old logs, and truncate logs:

   # logrotate -f /etc/logrotate.conf
   # rm -f /var/log/*-???????? /var/log/*.gz
   # rm -f /var/log/dmesg.old
   # rm -rf /var/log/anaconda
   # cat /dev/null > /var/log/audit/audit.log
   # cat /dev/null > /var/log/wtmp
   # cat /dev/null > /var/log/lastlog
   # cat /dev/null > /var/log/grubby

9. Remove udev hardware rules:

   # rm -f /etc/udev/rules.d/70*

10. Remove the uuid from ifcfg scripts:

    # cat > /etc/sysconfig/network-scripts/ifcfg-ens192 <<EOM
    DEVICE=ens192
    ONBOOT=yes
    EOM

11. Remove the SSH host keys:

    # rm -f /etc/ssh/SSH_keys

12. Remove root user’s shell history:

    # rm -f ~root/.bash_history
    # unset HISTFILE

13. Remove root user’s SSH history:

    # rm -rf ~root/.ssh/known_hosts