Task:
An application currently running on the Kubernetes cluster employs the nginx web server. The Nautilus application development team has introduced some recent changes that need deployment. They’ve crafted an image nginx:1.18 with the latest updates.
Execute a rolling update for this application, integrating the nginx:1.18 image. The deployment is named nginx-deployment.
Ensure all pods are operational post-update.
Note: The kubectl utility on jump_host is set up to operate with the Kubernetes cluster
Solution:
Logged into the jumphost
did all the checks
Kubectl get deployments, pods…
pods are running fine.
I started rolling update, using kubectl set imgae … command,
Got an error message - error: unable to find container named “nginx”
I described the deployment and at the botttom, there is an error
Events:
Type Reason Age From Message
Normal Scheduled 3m15s default-scheduler Successfully assigned default/nginx-deployment-989f57c54-p6h8f to kodekloud-control-plane
Normal Pulling 3m14s kubelet Pulling image “nginx:1.16”
Normal Pulled 3m8s kubelet Successfully pulled image “nginx:1.16” in 6.401818134s (6.401913975s including waiting)
Normal Created 3m7s kubelet Created container nginx-container
Normal Started 3m7s kubelet Started container nginx-container
Error from server (NotFound): pods “nginx-deployment” not found
Can someone please check the error and fix the deployment, I am not able to do the rolling update tasks on this server.
Thanks
