Chapter 5. Deploying Container Storage in Independent Mode

In your inventory file, add glusterfs in the [OSEv3:children] section to enable the [glusterfs] group:

[OSEv3:children]
masters
etcd
nodes
glusterfs

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"

Add a [glusterfs] section with entries for each storage node that will hostthe GlusterFS storage. For each node, set glusterfs_devices to a list of rawblock 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 nopartitions or LVM PVs. Also, set glusterfs_ip to the IP address of the node.Specifying the variable takes the form:

<hostname_or_ip> glusterfs_zone=<zone_number> glusterfs_ip=<ip_address> glusterfs_devices='[ "</path/to/device1/>", "</path/to/device2>", ... ]'

For example:

[glusterfs]
gluster1.example.com glusterfs_zone=1 glusterfs_ip=192.168.10.11 glusterfs_devices='[ "/dev/xvdc", "/dev/xvdd" ]'
gluster2.example.com glusterfs_zone=2 glusterfs_ip=192.168.10.12 glusterfs_devices='[ "/dev/xvdc", "/dev/xvdd" ]'
gluster3.example.com glusterfs_zone=3 glusterfs_ip=192.168.10.13 glusterfs_devices='[ "/dev/xvdc", "/dev/xvdd" ]'

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:

Brick multiplexing is a feature that allows adding multiple bricks into one process. This reduces resource consumption and allows us to run more bricks than before with the same memory consumption. Execute the following commands on one of the Red Hat Gluster Storage nodes on each cluster to enable brick-multiplexing:

In your inventory file, set the following variables under [OSEv3:vars]:

[OSEv3:vars]
...
openshift_hosted_registry_selector='node-role.kubernetes.io/infra=true'
openshift_hosted_registry_storage_volume_size=5Gi
openshift_hosted_registry_storage_kind=glusterfs

openshift_metrics_install_metrics=true
openshift_metrics_cassandra_storage_type=pv
openshift_metrics_hawkular_nodeselector={"node-role.kubernetes.io/infra": "true"}
openshift_metrics_cassandra_nodeselector={"node-role.kubernetes.io/infra": "true"}
openshift_metrics_heapster_nodeselector={"node-role.kubernetes.io/infra": "true"}
openshift_metrics_storage_volume_size=20Gi
openshift_metrics_cassandra_pvc_storage_class_name="glusterfs-registry-block"

openshift_logging_install_logging=true
openshift_logging_es_pvc_dynamic=true
openshift_logging_storage_kind=dynamic
openshift_logging_kibana_nodeselector={"node-role.kubernetes.io/infra": "true"}
openshift_logging_curator_nodeselector={"node-role.kubernetes.io/infra": "true"}
openshift_logging_es_nodeselector={"node-role.kubernetes.io/infra": "true"}
openshift_logging_es_pvc_size=20Gi
openshift_logging_es_pvc_storage_class_name="glusterfs-registry-block"

openshift_storage_glusterfs_namespace=app-storage
openshift_storage_glusterfs_storageclass=true
openshift_storage_glusterfs_storageclass_default=false
openshift_storage_glusterfs_block_deploy=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"


openshift_storage_glusterfs_registry_namespace=infra-storage
openshift_storage_glusterfs_registry_storageclass=false
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
openshift_storage_glusterfs_registry_is_native=false
openshift_storage_glusterfs_registry_heketi_is_native=true
openshift_storage_glusterfs_registry_heketi_executor=ssh
openshift_storage_glusterfs_registry_heketi_ssh_port=22
openshift_storage_glusterfs_registry_heketi_ssh_user=root
openshift_storage_glusterfs_registry_heketi_ssh_sudo=false
openshift_storage_glusterfs_registry_heketi_ssh_keyfile="/root/.ssh/id_rsa"

Add glusterfs and glusterfs_registry in the [OSEv3:children] section to enable the [glusterfs] and [glusterfs_registry] groups:

[OSEv3:children]
...
glusterfs
glusterfs_registry

Add [glusterfs] and [glusterfs_registry] sections with entries for eachstorage node that will host the GlusterFS storage. For each node, set`glusterfs_devices` to a list of raw block devices that will be completelymanaged as part of a GlusterFS cluster. There must be at least one devicelisted. Each device must be bare, with no partitions or LVM PVs. Specifying thevariable takes the form:

<hostname_or_ip> glusterfs_zone=<zone_number> glusterfs_ip=<ip_address> glusterfs_devices='[ "</path/to/device1/>", "</path/to/device2>", ... ]'

For example:

[glusterfs]
node11.example.com glusterfs_zone=1 glusterfs_ip=192.168.10.11 glusterfs_devices='["/dev/xvdc", "/dev/xvdd" ]'
node12.example.com glusterfs_zone=2 glusterfs_ip=192.168.10.12 glusterfs_devices='["/dev/xvdc", "/dev/xvdd" ]'
node13.example.com glusterfs_zone=3 glusterfs_ip=192.168.10.13 glusterfs_devices='["/dev/xvdc", "/dev/xvdd" ]'

[glusterfs_registry]
node15.example.com glusterfs_zone=1 glusterfs_ip=192.168.10.15 glusterfs_devices='["/dev/xvdc", "/dev/xvdd" ]'
node16.example.com glusterfs_zone=2 glusterfs_ip=192.168.10.16 glusterfs_devices='["/dev/xvdc", "/dev/xvdd" ]'
node17.example.com glusterfs_zone=3 glusterfs_ip=192.168.10.17 glusterfs_devices='["/dev/xvdc", "/dev/xvdd" ]'

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:

Installation Verification for Independent mode

Storage Provisioning Verification for Independent Mode

Using the heketi-client for Verification