How do I remove an NSP cluster node?
Purpose
The following steps describe how to remove a node from an NSP cluster.
Note: You can use the procedure to remove only a node added using procedure How do I add an NSP cluster node?.
Steps
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CAUTION System Degradation |
The procedure includes operations that fundamentally reconfigure the NSP system.
You must contact Nokia support for guidance before you attempt to perform the procedure.
1 |
Log in as the root user on the NSP cluster host. |
2 |
Open a console window. |
3 |
Enter the following: # kubectl get nodes ↵ The NSP cluster nodes are listed. |
4 |
Record the name of the node that you intend to remove. |
5 |
Enter the following to stop all pods that are running on the node: # kubectl drain node --ignore-daemonsets --delete-local-data ↵ where node is the name of the node that you intend to remove |
6 |
Enter the following: # kubectl delete node name ↵ where name is the name of the node to remove The node is removed from the cluster. |
7 |
Enter the following: # kubectl get nodes ↵ The NSP cluster nodes are listed. |
8 |
Verify that the node is removed from the cluster. |
9 |
Log in as the root user on the NSP deployer host. |
10 |
Open the following file using a plain-text editor such as vi: /opt/nsp/nsp-k8s-deployer-release-ID/config/k8s-deployer.yml |
11 |
Remove all references to the removed node to ensure that the node cannot be added back into the cluster during a redeployment operation. |
12 |
Save and close the file. |
13 |
Create a backup copy of the updated k8s-deployer.yml file, and transfer the backup copy to a station that is separate from the NSP system, preferably in a remote facility. |
14 |
Enter the following: # cd /opt/nsp/nsp-k8s-deployer-release-ID/bin ↵ |
15 |
Enter the following to create the cluster configuration: # ./nspk8sctl config -c ↵ The following is displayed when the creation is complete: ✔ Cluster hosts configuration is created at: /opt/nsp/nsp-k8s-deployer-Release-ID/config/hosts.yml |
16 |
Perform How do I back up the NSP cluster databases? to ensure that the reconfigured cluster can be restored in the event of a failure. |
17 |
Close the console window. End of steps |