Red Hat Summit3.4. Set Up Ceph
For this Red Hat Quay configuration, we create a three-node Ceph cluster, with several other supporting nodes, as follows:
- ceph01, ceph02, and ceph03 - Ceph Monitor, Ceph Manager and Ceph OSD nodes
- ceph04 - Ceph RGW node
- ceph05 - Ceph Ansible administration node
For details on installing Ceph nodes, see Installing Red Hat Ceph Storage on Red Hat Enterprise Linux.
Once you have set up the Ceph storage cluster, create a Ceph Object Gateway (also referred to as a RADOS gateway). See Installing the Ceph Object Gateway for details.
3.4.1. Install each Ceph node
On ceph01, ceph02, ceph03, ceph04, and ceph05, do the following:
Review prerequisites for setting up Ceph nodes in Requirements for Installing Red Hat Ceph Storage. In particular:
- Decide if you want to use RAID controllers on OSD nodes.
- Decide if you want a separate cluster network for your Ceph Network Configuration.
-
Prepare OSD storage (ceph01, ceph02, and ceph03 only). Set up the OSD storage on the three OSD nodes (ceph01, ceph02, and ceph03). See OSD Ansible Settings in Table 3.2 for details on supported storage types that you will enter into your Ansible configuration later. For this example, a single, unformatted block device (
/dev/sdb), that is separate from the operating system, is configured on each of the OSD nodes. If you are installing on metal, you might want to add an extra hard drive to the machine for this purpose. - Install Red Hat Enterprise Linux Server edition, as described in the RHEL 7 Installation Guide.
Register and subscribe each Ceph node as described in the Registering Red Hat Ceph Storage Nodes. Here is how to subscribe to the necessary repos:
# subscription-manager repos --disable=* # subscription-manager repos --enable=rhel-7-server-rpms # subscription-manager repos --enable=rhel-7-server-extras-rpms # subscription-manager repos --enable=rhel-7-server-rhceph-3-mon-rpms # subscription-manager repos --enable=rhel-7-server-rhceph-3-osd-rpms # subscription-manager repos --enable=rhel-7-server-rhceph-3-tools-rpmsCreate an ansible user with root privilege on each node. Choose any name you like. For example:
# USER_NAME=ansibleadmin # useradd $USER_NAME -c "Ansible administrator" # passwd $USER_NAME New password: ********* Retype new password: ********* # cat << EOF >/etc/sudoers.d/admin admin ALL = (root) NOPASSWD:ALL EOF # chmod 0440 /etc/sudoers.d/$USER_NAME
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