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Question 3 - Scale down StatefulSet

Question 3 | Scale down StatefulSet​

Use context: kubectl config use-context k8s-c1-H

There are two Pods named o3db-* in Namespace project-c13. C13 management asked you to scale the Pods down to one replica to save resources.

k get pod -n project-c13  | grep o3db
o3db-0                                  1/1     Running   0          52s
o3db-1                                  1/1     Running   0          42s

# We need to know who are the controllers of this pod.
# The possible controllers are deploy, daemonset and statefulset.
k get deploy,ds,sts -n project-c13 | grep o3db
statefulset.apps/o3db   2/2     2m56s

# We can also confirm by checking

➜ k scale sts o3db -n project-c13 --replicas 1
statefulset.apps/o3db scaled

➜ k -n project-c13 get sts o3db
NAME   READY   AGE
o3db   1/1     4m39s