Kubernetes Commands

kubectl get nodes

Displays the status of the nodes in the Kubernetes cluster.

kubectl get pods

Lists all the pods running in the default namespace.

kubectl get pods -A

Lists all the pods across all namespaces.

kubectl get pods -n <namespace>

Lists pods in a specific namespace.

kubectl create deployment <deployment-name> –image=<image-name>

Creates a new deployment with the specified name and image.

kubectl get deployments

Lists all the deployments in the default namespace.

kubectl describe pod <pod-name>

Shows detailed information about a specific pod.

kubectl describe deployment <deployment-name>

Shows detailed information about a specific deployment.

kubectl apply -f <filename.yaml>

Applies a configuration to a resource from a YAML file.

kubectl delete -f <filename.yaml>

Deletes resources defined in a YAML file.

kubectl delete pod <pod-name>

Deletes a specific pod.

kubectl expose deployment <deployment-name> –port=<port> –target-port=<target-port> –type=LoadBalancer –name=<service-name>

Exposes a deployment as a new Service.

kubectl get services

Lists all the services in the default namespace.

kubectl get service <service-name> -o yaml

Displays the YAML definition of a specific service.

kubectl logs <pod-name>

Shows the logs of a specific pod.

kubectl logs -f <pod-name>

Follows the logs of a specific pod in real-time.

kubectl exec -it <pod-name> — /bin/bash

Executes a command inside a running pod (interactive shell).

kubectl scale deployment <deployment-name> –replicas=<count>

Scales the number of replicas for a deployment.

kubectl create namespace <namespace-name>

Creates a new namespace.

kubectl get namespaces

Lists all the namespaces in the cluster.

kubectl delete namespace <namespace-name>

Deletes a specific namespace.

kubectl get events

Displays events in the cluster.

kubectl get configmaps

Lists all the ConfigMaps in the default namespace.

kubectl create configmap <configmap-name> –from-file=<path/to/file>

Creates a ConfigMap from a file.

kubectl get secrets

Lists all the secrets in the default namespace.

kubectl create secret generic <secret-name> –from-literal=username=<username> –from-literal=password=<password>

Creates a generic secret from literal values.

kubectl get pvc

Lists all the PersistentVolumeClaims in the default namespace.

kubectl create pvc <pvc-name> –access-modes=ReadWriteOnce –size=1Gi

Creates a PersistentVolumeClaim.

kubectl get pv

Lists all the PersistentVolumes in the cluster.

kubectl create -f <filename.yaml>

Creates resources defined in a YAML file.

Advanced Commands

kubectl rollout restart deployment <deployment-name>

Restarts a deployment, triggering a rolling update.

kubectl rollout status deployment <deployment-name>

Shows the status of a deployment rollout.

kubectl rollout history deployment <deployment-name>

Shows the rollout history of a deployment.

kubectl rollout undo deployment <deployment-name> –to-revision=<revision-number>

Rolls back a deployment to a previous revision.

kubectl autoscale deployment <deployment-name> –min=<min-replicas> –max=<max-replicas> –cpu-percent=<percentage>

Enables autoscaling for a deployment based on CPU utilization.

kubectl top nodes

Displays resource usage (CPU/Memory) of nodes.

kubectl top pods

Displays resource usage (CPU/Memory) of pods in the default namespace.

kubectl top pods -n <namespace>

Displays resource usage of pods in a specific namespace.

kubectl cordon <node-name>

Marks a node as unschedulable.

kubectl uncordon <node-name>

Marks a node as schedulable.

kubectl drain <node-name> –ignore-daemonsets

Evicts all pods from a node in preparation for maintenance.