Contents

Kubernetes Deployment

You must know

Deployment is going to create ReplicaSet automatically.

YAML - deployment-definition.yml

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apiVersion: apps/v1
kind: Deployment
metadata: # -> Deployment
  name: myapp-deployment
  labels:
    app: myapp
    type: front-end
spec: # -> Deployment
  template:
    metadata: # -> POD
      name: myapp-pod
      labels:
        app: myapp
        type: front-end
    spec: # -> POD
      containers:
        - name: nginx-continer
          image: nginx
  replicas: 3
  selector:
    matchLabels:
      type: front-end

Create a Deployment

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kubectl create -f deployment-definition.yml

Show Deployment List

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# Show Deployment
kubectl get deployments

# Show ReplicaSet that is created by Deployment
kubectl get replicaset

# Show PODs that is created by above ReplicaSet
kubectl get pods

# Show all of them
kubectl get all

Show Deployment Detail

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kubectl describe deployment myapp-deployment

Change Running Deployment

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kubectl edit deployment myapp-deployment

Delete Deployment

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kubectl delete deployment myapp-deployment