Kubernetes Commands

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# Create a POD with nginx image
kubectl run nginx --image=nginx

# Generate POD Manifest YAML file without create(--dry-run)
kubectl run nginx --image=nginx --dry-run=client -o yaml > nginx-pod.yml


# Create a Deployment
kubectl create deployment --image=nginx nginx

# Generate Deployment Manifest YAML file without create(--dry-run)
kubectl create deployment --image=nginx nginx --dry-run=client -o yaml > nginx-deployment.yml

# Generate Deployment Manifest YAML file without create(--dry-run) with 4 replicas(--replicas=4)
kubectl create deployment --image=nginx --replicas=4 nginx --dry-run -o yaml > nginx-deployment.yml

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# Basic
kubectl get pods

# Wide
kubectl get pods -o wide

# Selector
kubectl get pods --selector key=value

# Selector with no headers and count PODs
kubectl get pods --selector key=value --no-headers | wc -l

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kubectl create -f pod-definition.yml

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kubectl run myapp-pod --image nginx

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kubectl describe pod myapp-pod

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kubectl edit pod myapp-pod

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kubectl delete pod myapp-pod

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kubectl get pod myapp-pod -o yaml > my-new-pod.yml

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kubectl get replicaset

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kubectl create -f rs-definition.yml

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kubectl describe replicaset myapp-replicaset

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kubectl edit replicaset myapp-replicaset

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kubectl delete replicaset myapp-replicaset

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# Default
kubectl get nodes

# Show Labels
kubectl get nodes --show-labels

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kubectl label nodes [node-name] [key]=[value]

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kubectl label nodes node01 size=Large

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# Structure
kubectl exec -it <container-name> -- <comaand>

# Examples
kubectl exec -it <container-name> -- sleep 10
kubectl exec -it <container-name> -- date -s '19 APR 2012 11:14:00'