Upgrading an application running inside kubernetes:

We could use the command line for example to update an "nginx" image running inside our kubernetes cluster. 

We could use the below command:



--record: for the changes to be recorded, so that we could see them in the "CHANGE-CAUSE" field, when when we display the deployment "history rollout".

Then we check our rollout using the below command:


We could also check all the changes of the deployment using the below command:



We could achieve the same results, by directly changing the deployment Yaml file and applying the changes:


Then we apply the changes using the below command:


We could see the changes in the image updated by the deployment, using the below command:



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