Conduct OpenShift v4 Health Check:

Below is a general summary of commands related to health checks in OpenShift v4:

Cluster Health:

oc get nodes: Displays the status of all nodes in the OpenShift cluster.

oc get pods –all-namespaces: Lists all pods in all namespaces.

Node Health:

oc adm node status : Checks the status of a specific node.

oc adm top node: Provides resource usage statistics for nodes.

Cluster Operator Status:

oc get clusteroperators: Lists the status of various cluster operators.

oc describe clusteroperator : Provides detailed information about a specific cluster operator.

Pod Health:

oc get pods: Lists all pods in the current namespace.

oc describe pod : Displays detailed information about a specific pod.

Logs and Events:

oc logs : Fetches the logs of a specific pod.

oc get events: Displays cluster events, which can help identify issues.

Network Health:

oc get svc: Lists all services in the current namespace.

oc get routes: Displays information about routes and their status.

Storage Health:

oc get pv,pvc: Lists information about persistent volumes and persistent volume claims.

oc describe pv : Provides details about a specific persistent volume.

Custom Resource Health:

oc get : Lists instances of custom resources.

oc describe : Displays detailed information about a specific custom resource.

Check Cluster Operators’ Health:

oc get co: Lists all cluster operators and their status.

oc describe co : Provides detailed information about a specific cluster operator.

Node Troubleshooting:

oc debug node/: Initiates a debugging session on a specific node.

ETCD Health:

Check the health of the etcd cluster, which may involve using etcd-specific tools.

Remember to replace , , , , and with your actual node, pod, operator, custom resource, and resource names, respectively.

Always refer to the official OpenShift documentation and release notes for the most accurate and current information on health check commands and procedures.