Inspecting Cluster Resources

Here are some kubectl commands that can help ensure that a Kubernetes cluster is properly configured. Remember that they must be run with -n <namespace>.

• kubectl get nodes: This command lists all the nodes in the cluster and their status, including their readiness and availability. This can help you identify any nodes that may be offline or not working properly.

• kubectl get pods: This command lists all the pods in the cluster and their status, including their IP addresses, hostnames, and container status. This can help you identify any pods that may be in a crash loop or have failed to start.

• kubectl describe pod <pod_name>: This command provides detailed information about a specific pod, including its resource utilization, events, and conditions. This can help you diagnose any issues that may be affecting the pod’s operation.

• kubectl get services: This command lists all the services in the cluster and their status, including their IP addresses, ports, and selector labels. This can help you verify that the services are properly exposed and that the right pods are being targeted.

• kubectl logs <pod_name>: This command displays the logs for a specific pod, which can help you diagnose any issues that may be affecting the pod’s operation.

These commands can give you a good overview of the state of your cluster and help you identify any issues that may need to be addressed. Additionally, it’s important to regularly monitor your cluster’s logs, events, and resource utilization to ensure that it’s functioning as expected.