14.2. Upgrading Container-Ready Storage

Upgrade the Red Hat Gluster Storage cluster. Refer In-Service Software Upgrade.

Upgrade Heketi by executing the following commands on the Red Hat Gluster Storage node where Heketi is running::

Backup the Heketi database file

cp -a /var/lib/heketi/heketi.db /var/lib/heketi/heketi.db.`date +%s`.`heketi --version | awk '{print $2}'`

# cp -a /var/lib/heketi/heketi.db /var/lib/heketi/heketi.db.`date +%s`.`heketi --version | awk '{print $2}'`

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Update Heketi by executing the following command in one of the Red Hat Gluster Storage nodes where Heketi is running:
```
yum update heketi
```
```
# yum update heketi
```
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To use gluster block, add the following two parameters to the glusterfs section in the heketi configuration file at /etc/heketi/heketi.JSON:

auto_create_block_hosting_volume
block_hosting_volume_size

auto_create_block_hosting_volume
block_hosting_volume_size

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Where:

auto_create_block_hosting_volume: Creates Block Hosting volumes automatically if not found or if the existing volume is exhausted. To enable this, set the value to true.

block_hosting_volume_size: New block hosting volume will be created in the size mentioned. This is considered only if auto_create_block_hosting_volume is set to true. Recommended size is 500G.

For example:

.....
.....
"glusterfs" : {


                "executor" : "ssh",

                "db" : "/var/lib/heketi/heketi.db",

                "sshexec" : {
                "rebalance_on_expansion": true,
                "keyfile" : "/etc/heketi/private_key"
                },

                "auto_create_block_hosting_volume": true,

                "block_hosting_volume_size": 500G
        },
.....
.....

.....
.....
"glusterfs" : {


                "executor" : "ssh",

                "db" : "/var/lib/heketi/heketi.db",

                "sshexec" : {
                "rebalance_on_expansion": true,
                "keyfile" : "/etc/heketi/private_key"
                },

                "auto_create_block_hosting_volume": true,

                "block_hosting_volume_size": 500G
        },
.....
.....

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Restart the Heketi service:
```
systemctl restart heketi
```
```
# systemctl restart heketi
```
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Execute the following command to install gluster block:

yum install gluster-block

# yum install gluster-block

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Enable and start the gluster block service:

systemctl enable gluster-blockd
systemctl start gluster-blockd

# systemctl enable gluster-blockd
# systemctl start gluster-blockd

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Execute the following command to update the heketi client and cns-deploy packages

yum install cns-deploy -y
yum update cns-deploy -y
yum update heketi-client -y

# yum install cns-deploy -y
# yum update cns-deploy -y 
# yum update heketi-client -y

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Execute the following commands to deploy the gluster-block provisioner:

sed -e 's/\\\${NAMESPACE}/<NAMESPACE>/' /usr/share/heketi/templates/glusterblock-provisioner.yaml | oc create -f -

# sed -e 's/\\\${NAMESPACE}/<NAMESPACE>/' /usr/share/heketi/templates/glusterblock-provisioner.yaml | oc create -f -

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oadm policy add-cluster-role-to-user glusterblock-provisioner-runner system:serviceaccount:<NAMESPACE>:glusterblock-provisioner

# oadm policy add-cluster-role-to-user glusterblock-provisioner-runner system:serviceaccount:<NAMESPACE>:glusterblock-provisioner

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For example:

sed -e 's/\\\${NAMESPACE}/storage-project/' /usr/share/heketi/templates/glusterblock-provisioner.yaml | oc create -f -

# sed -e 's/\\\${NAMESPACE}/storage-project/' /usr/share/heketi/templates/glusterblock-provisioner.yaml | oc create -f -

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oadm policy add-cluster-role-to-user glusterblock-provisioner-runner system:serviceaccount:storage-project:glusterblock-provisioner

# oadm policy add-cluster-role-to-user glusterblock-provisioner-runner system:serviceaccount:storage-project:glusterblock-provisioner

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Support for S3 compatible Object Store is under technology preview. To enable S3 compatible object store, refer Chapter 18, S3 Compatible Object Store in a Container-Native Storage Environment.

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