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7.+Deployment.txt
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*******************************************************************
*******************************************************************
# 1. Deployment YAML file
# nginx-deploy.yaml
apiVersion: apps/v1
kind: Deployment
metadata:
name: nginx-deploy
labels:
app: nginx-deploy-lbl1
spec:
replicas: 3
template:
metadata:
labels:
app: nginx-app
spec:
containers:
- name: nginx-container
image: nginx:1.7.9
ports:
- containerPort: 80
selector:
matchLabels:
app: nginx-app
*******************************************************************
# 2. Create and Display Deployment
kubectl create -f nginx-deploy.yaml
kubectl get deploy -l app=nginx-app
kubectl get rs -l app=nginx-app
kubectl get po -l app=nginx-app
kubectl describe deploy nginx-deploy
*******************************************************************
# 3. Testing: Rollback update
kubectl set image deploy nginx-deploy nginx-container=nginx:1.91 --record
kubectl rollout status deployment/nginx-deploy
kubectl rollout history deployment/nginx-deploy
kubectl rollout undo deployment/nginx-deploy
kubectl rollout status deployment/nginx-deploy
kubectl describe deploy nginx-deploy | grep -i image
*******************************************************************
# 4. Testing: Update Version of "nginx:1.7.9" to "nginx:1.9.1"
kubectl set image deploy nginx-deploy nginx-container=nginx:1.9.1
# or
kubectl edit deploy nginx-deploy
kubectl rollout status deployment/nginx-deploy
kubectl get deploy
*******************************************************************
# 5. Testing: Scale UP
kubectl scale deployment nginx-deploy --replicas=5
kubectl get deploy
kubectl get po -o wide
*******************************************************************
# 6. Testing: Scale DOWN
kubectl scale deployment nginx-deploy --replicas=3
kubectl get deploy
kubectl get po -o wide
*******************************************************************
# 7. Cleanup
kubectl delete -f nginx-deploy.yaml
kubectl get deploy
kubectl get rs
kubectl get po
*******************************************************************