Notes/docs/Command Snippets/Kubernetes Snippets.md

• Get all pods

kubectl get pods

• Get all replicacontrollers

kubectl get replicacontrollers

• Get all replicasets

kubectl get replicasets

• Describe a specific resource (ex. Describe a deployment named myapp-deployment)

kubectl describe deployment/myapp-deployment

# This works too
kubectl describe deployment myapp-deployment

• Get specific resource information in wide format

kubectl describe deployment/myapp-deployment -o wide

• Create a deployment

kubectl create -f deployment.yml

• Update a deployment

kubectl apply -f deployment.yml

• Check rollout/deployment history

kubectl rollout history deployment/myapp-deployment

• Update a deployment, tracking changes (deprecated)

kubectl apply -f deployment.yml --record

• Update a deployment using annotate(Note: Changes to scale will not create a new deployment. Annotating after this may result in the message for the previous deployment being replaced)

# This assumes you've annotated the previous deployment already
kubectl apply -f deployment.yml

# Annotate the new deployment
kubectl annotate deployment/myapp-deployment kubernetes.io/change-cause="DESCRIBE_CHANGES_HERE"

# You can then view the rollout history
kubectl rollout history deployment/myapp-deployment

• Restart a deployment (repulls latest image if imagePullPolicy is set to Always)

kubectl rollout restart deployment/myapp-deployment