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4.3. Deploying Red Hat Openshift Container Storage in Converged Mode with Registry


  1. In your inventory file, include the following variables in the [OSEv3:vars] section, adjusting them as needed for your configuration:
    openshift_storage_glusterfs_registry_namespace=app-storage
    openshift_storage_glusterfs_registry_storageclass=true
    openshift_storage_glusterfs_registry_storageclass_default=false
    openshift_storage_glusterfs_registry_block_deploy=true
    openshift_storage_glusterfs_registry_block_host_vol_create=true
    openshift_storage_glusterfs_registry_block_host_vol_size=100
    openshift_storage_glusterfs_registry_block_storageclass=true
    openshift_storage_glusterfs_registry_block_storageclass_default=false
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  2. In your inventory file, set the following variable under [OSEv3:vars]:
    [OSEv3:vars]
    ...
    openshift_hosted_registry_storage_kind=glusterfs
    openshift_hosted_registry_storage_volume_size=5Gi
    openshift_hosted_registry_selector='node-role.kubernetes.io/infra=true'
    
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  3. Add glusterfs_registry in the [OSEv3:children] section to enable the [glusterfs_registry] group:
    [OSEv3:children]
    masters
    etcd
    nodes
    glusterfs_registry
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  4. Add a [glusterfs_registry] 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. Specifying the variable takes the form:
    <hostname_or_ip> glusterfs_devices='[ "</path/to/device1/>", "</path/to/device2>", ... ]'
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    For example:
    [glusterfs_registry]
    node11.example.com glusterfs_devices='[ "/dev/xvdc", "/dev/xvdd" ]'
    node12.example.com glusterfs_devices='[ "/dev/xvdc", "/dev/xvdd" ]'
    node13.example.com glusterfs_devices='[ "/dev/xvdc", "/dev/xvdd" ]'
    node14.example.com glusterfs_devices='[ "/dev/xvdc", "/dev/xvdd" ]'
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  5. Add the hosts listed under [glusterfs_registry] to the [nodes] group:
    [nodes]
    ...
    node11.example.com openshift_node_group_name="node-config-compute"
    node12.example.com openshift_node_group_name="node-config-compute"
    node13.example.com openshift_node_group_name="node-config-compute"
    node13.example.com openshift_node_group_name="node-config-compute"
    
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  6. 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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  7. To verify the deployment see, Section 4.6, “Verify your Deployment”.
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