Search <book_title>...

Veritas InfoScale™ for Kubernetes Environments 8.0.200 - Linux

Last Published: 2023-02-21

Product(s): InfoScale & Storage Foundation (8.0.200)

Platform: Linux

Adding nodes to an existing cluster

Complete the following steps to add nodes to an existing InfoScale cluster-

Ensure that you add the worker nodes to the OCP cluster.
Note:
You must add all OpenShift worker nodes to the InfoScale cluster.

Run the following command on the bastion node to check whether the newly added node is Ready.

oc get nodes -A

Review output similar to the following

NAME                  STATUS ROLES  AGE VERSION
ocp-cp-1.lab.ocp.lan  Ready  master 54d v1.22.1+d8c4430
ocp-cp-2.lab.ocp.lan  Ready  master 54d v1.22.1+d8c4430
ocp-cp-3.lab.ocp.lan  Ready  master 54d v1.22.1+d8c4430
ocp-w-1.lab.ocp.lan   Ready  worker 54d v1.22.1+d8c4430
ocp-w-2.lab.ocp.lan   Ready  worker 54d v1.22.1+d8c4430
ocp-w-3.lab.ocp.lan   Ready  worker 54d v1.22.1+d8c4430
ocp-w-4.lab.ocp.lan   Ready  worker 54d v1.22.1+d8c4430

To add new nodes to an existing cluster, the cluster must be in a running state. Run the following command on the bastion node to verify.
oc get infoscalecluster
See the State in the output similar to the following -
```
NAME                 NAMESPACE      VERSION STATE   AGE
infoscalecluster-dev infoscale-vtas 8.0.200 Running 1m15s
```

Edit clusterInfo section of the sample /YAML/OpenShift/cr.yaml to add information about the new nodes.

In this example, worker-node-1 and worker-node-2 exist. worker-node-3 is being added.

Note:

The number of IP addresses must be same for all nodes.

   
apiVersion: infoscale.veritas.com/v1
kind: InfoScaleCluster
metadata:
name: infoscalecluster-dev

spec:
clusterID: <Optional- Enter an ID for this cluster>
isSharedStorage: true 
  clusterInfo:
  - nodeName: "worker-node-1"
    ip:
    - "<IP address of worker-node-1>"
  - nodeName: "worker-node-2"
    ip:
    - "<IP address of worker-node-2>"
  - nodeName: "worker-node-3"
    ip:
    - "<IP address of worker-node-3>"
    excludeDevice:
    - /dev/sdm
    - /dev/sdn
    
.
.                                               
 
 YOU CAN ADD UP TO 16 NODES.

 fencingDevice: ["<Hardware path to the first fencing device>",
                  "<Hardware path to the second fencing device>",    
                  "<Hardware path to the third fencing device>", ]
  encrypted: false
  sameEnckey: false

Run the following command on the bastion node to initiate add node workflow.
oc apply -f /YAML/OpenShift/cr.yaml

You can run the following commands on the bastion node when node addition is in progress.

a. oc get infoscalecluster

See the State in the output as under. ProcessingAddNode indicates node is getting added.

 
NAME                   NAMESPACE        VERSION   STATE             AGE
infoscalecluster-dev   infoscale-vtas   8.0.200   ProcessingAddNode 26m

b. oc describe infoscalecluster -n infoscale-vtas

Output similar to following indicates the cluster status during add node. The cluster is Degraded when node addition is in progress.

Cluster Name:  infoscalecluster-dev
  Cluster Nodes:
    Exclude Device:
      /dev/sdm
      /dev/sdn
    Node Name:  worker-node-1
    Role:       Joined,Master
    Node Name:  worker-node-2
    Role:       Joined,Slave
    Node Name:  worker-node-3
    Role:         Out of Cluster
   Cluster State:  Degraded
   enableScsi3pr:  false
   Images:
    Csi:
      Csi External Attacher Container:      csi-attacher:v3.1.0

Run the following command on the bastion node to verify if pods are created successfully. It may take some time for the pods to be created.

oc get pods -n infoscale-vtas

Output similar to the following indicates a successful creation.

NAME                                 READY STATUS  RESTARTS AGE
infoscale-csi-controller-1234-0      5/5   Running 0        19h
infoscale-csi-node-1234-gf9pf        2/2   Running 0        19h
infoscale-csi-node-1234-gg5dq        2/2   Running 0        18h
infoscale-csi-node-1234-nmt85        2/2   Running 0        18h
infoscale-csi-node-1234-r6jv8        2/2   Running 0        19h
infoscale-csi-node-1234-w5bln        2/2   Running 2        19h
infoscale-fencing-controller-
                234-864468775c-4sbxw 1/1   Running 0        18h
infoscale-fencing-enabler-1234-8b65z 1/1   Running 0        19h
infoscale-fencing-enabler-1234-bkbbh 1/1   Running 3 (18h ago) 18h
infoscale-fencing-enabler-1234-jvzjk 1/1   Running 5 (18h ago) 18h
infoscale-fencing-enabler-1234-pxfmt 1/1   Running 4 (18h ago) 19h
infoscale-fencing-enabler-1234-qmjrv 1/1   Running 0        19h
infoscale-sds-1234-e383247e62b56585-
                               2xxvh 1/1   Running 1        19h
infoscale-sds-1234-e383247e62b56585-
                               cnvkg 1/1   Running 0        18h
infoscale-sds-1234-e383247e62b56585-
                               l5z7m 1/1   Running 0        19h
infoscale-sds-1234-e383247e62b56585-
                               xlkf8 1/1   Running 0        18h
infoscale-sds-1234-e383247e62b56585-
                               zkpgt 1/1   Running 0        19h
infoscale-sds-operator-bb55cfc4d- 
                               pclt5 1/1   Running 0        18h
infoscale-licensing-operator
                  -5fd897f68f-7p2f7  1/1   Running 0        18h
nfd-controller-manager-6bbf6df4d9-
                               dbxgl 2/2   Running 2        20h
nfd-master-2h7x6                     1/1   Running 0        19h
nfd-master-kclkq                     1/1   Running 0        19h
nfd-master-npjzm                     1/1   Running 0        19h
nfd-worker-8q4lz                     1/1   Running 0        19h
nfd-worker-cvkqp                     1/1   Running 0        19h
nfd-worker-js7tt                     1/1   Running 1        19h
special-resource-controller-manager-
                        86b6c7-wv2tc 2/2   Running 0        20h

Run the following command on the bastion node to verify if the cluster is 'Running'
oc get infoscalecluster
See the State in the output similar to the following -
```
NAME                 NAMESPACE      VERSION STATE   AGE
infoscalecluster-dev infoscale-vtas 8.0.200 Running 1m15s
```

Run the following command on the bastion node to verify whether the cluster is 'Healthy'.

oc describe infoscalecluster

Check the Cluster State in the output similar to the following-

Status:
  Cluster Name:  infoscalecluster-dev
  Cluster Nodes:
    Node Name:    worker-node-1
    Role:         Joined,Master
    Node Name:    worker-node-2
    Role:         Joined,Slave
    Node Name:    worker-node-3
    Role:         Joined,Slave
  Cluster State:  Healthy