5.3. Deploying Red Hat Openshift Container Storage in Independent Mode


  1. In your inventory file, add glusterfs in the [OSEv3:children] section to enable the [glusterfs] group:
    [OSEv3:children]
    masters
    etcd
    nodes
    glusterfs
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  2. Include the following variables in the [OSEv3:vars] section, adjusting them as needed for your configuration:
    [OSEv3:vars]
    ...
    openshift_storage_glusterfs_namespace=app-storage
    openshift_storage_glusterfs_storageclass=true
    openshift_storage_glusterfs_storageclass_default=false
    openshift_storage_glusterfs_block_deploy=true
    openshift_storage_glusterfs_block_host_vol_create=true
    openshift_storage_glusterfs_block_host_vol_size=100
    openshift_storage_glusterfs_block_storageclass=true
    openshift_storage_glusterfs_block_storageclass_default=false
    openshift_storage_glusterfs_is_native=false
    openshift_storage_glusterfs_heketi_is_native=true
    openshift_storage_glusterfs_heketi_executor=ssh
    openshift_storage_glusterfs_heketi_ssh_port=22
    openshift_storage_glusterfs_heketi_ssh_user=root
    openshift_storage_glusterfs_heketi_ssh_sudo=false
    openshift_storage_glusterfs_heketi_ssh_keyfile="/root/.ssh/id_rsa"
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  3. Add a [glusterfs] section with entries for each storage node that will host the GlusterFS storage. For each node, set glusterfs_devices to a list of raw block devices that will be completely managed as part of a GlusterFS cluster. There must be at least one device listed. Each device must be bare, with no partitions or LVM PVs. Also, set glusterfs_ip to the IP address of the node. Specifying the variable takes the form:
    <hostname_or_ip> glusterfs_ip=<ip_address> glusterfs_devices='[ "</path/to/device1/>", "</path/to/device2>", ... ]'
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    For example:
    [glusterfs]
    gluster1.example.com glusterfs_ip=192.168.10.11 glusterfs_devices='[ "/dev/xvdc", "/dev/xvdd" ]'
    gluster2.example.com glusterfs_ip=192.168.10.12 glusterfs_devices='[ "/dev/xvdc", "/dev/xvdd" ]'
    gluster3.example.com glusterfs_ip=192.168.10.13 glusterfs_devices='[ "/dev/xvdc", "/dev/xvdd" ]'
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  4. The preceding steps detail options that need to be added to a larger, complete inventory file. To use the complete inventory file to deploy {gluster} provide the file path as an option to the following playbooks:
    • For an initial OpenShift Container Platform installation:
      ansible-playbook -i <path_to_inventory_file> /usr/share/ansible/openshift-ansible/playbooks/prerequisites.yml
      
      ansible-playbook -i <path_to_inventory_file> /usr/share/ansible/openshift-ansible/playbooks/deploy_cluster.yml
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    • For a standalone installation onto an existing OpenShift Container Platform cluster:
      ansible-playbook -i <path_to_inventory_file> /usr/share/ansible/openshift-ansible/playbooks/openshift-glusterfs/config.yml
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