16. Kubernetes: Deployments and Rollbacks
** Example:1 **
vi my-nginx-rolling-update.yaml
apiVersion: apps/v1
kind: Deployment
metadata:
name: my-nginx-ru-pod
labels:
app: mynginx-ru
spec:
replicas: 3
selector:
matchLabels:
app: nginx-ru
template:
metadata:
labels:
app: nginx-ru
spec:
containers:
name: my-nginx-ru-container
image: nginx:1.18.0
ports:
containerPort: 80
kubectl create -f my-nginx-rolling-update.yaml
kubectl rollout status deployments my-nginx-ru-pod
kubectl get pods
kubectl describe pod [pod name]
kubectl set image deployment/my-nginx-ru-pod my-nginx-ru-container=nginx:1.19 --record
kubectl get pods -l app=nginx-ru -w
kubectl get pods -l app=nginx-ru
kubectl describe pod [my-nginx-ru-pod-XXXX-XXXX]
kubectl rollout history deployment/my-nginx-ru-pod
kubectl rollout undo deployment/my-nginx-ru-pod
kubectl get pods -l app=nginx-ru
kubectl describe pod [pod]
kubectl rollout history deployment/my-nginx-ru-pod
kubectl rollout undo deployment/my-nginx-ru-pod --to-revision=1
kubectl get pods -l app=nginx-ru
kubectl describe pod [my-nginx-ru-pod-6db6559d76-XXXXXX-XXXX]
kubectl edit deployment/my-nginx-ru-pod
