☸️Deployment

Describe about What is Deployment ?

It is similar to ReplicaSet , the different thing is we can update the new version of pod by using Deployment

There are 2 mechanism to update pod version:

  1. Recreate

  2. Rolling Update

Recreate = It will destroy all of the existing pod and recreate (has downtime)

Rolling Update (default) = It will create new pod with new version after that it will down the existing pod this process is doing 1 by 1 until remove all of existing pod (no down time) CheatSheet Command

  1. Get Deployment : kubectl get deployment

  2. Create Deployment: kubectl create deployment <deployment_name> --replicas=<amount_of_replica> --image=<image_name>

  3. Check the apiVersion of the template: kubectl explain deployment

  4. Execute command from file kubectl apply -f <file_name>.yaml

  5. Check status of rollout deployment: kubectl rollout status deployment/<depoyment_name>

  6. Check history of rollout deployment: kubectl rollout history deployment/<depoyment_name>

  7. Undo rollout deployment: kubectl rollout undo deployment/<depoyment_name>

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