What is the purpose of Chap 5.9, #9.5?

[MikeInAZ]

Remove the config-map-pvc volume from the file-sharing deployment.

[student@workstation ~]$ oc set volume deployment/file-sharing \
  --remove --name=config-map-pvc deployment.apps/file-sharing volume updated

What is the purpose behind removing the config-map-pvc from the file-sharing deployment other than just to do it?  It is in relation to #10 (adding the shared-volume PVC to the dbserver deployment) or simply a completely independant skill question?

[Chetan_Tiwary_]

Hello @MikeInAZ I will try to explain my understanding of it :

refer the lab objective first :

so, in step 8 -  we mounted the dbfiles configuration map to the file-sharing deployment as a volume named config-map-pvc and got the insertdata.sql file in the /home/database-files/  path.

Now in step 9 ; when we have to add a shared PVC named shared-pvc to both the file-sharing and dbserver deployments as per the objective ( and to share the insertdata.sql file );  we first created the persistent volume in the file-sharing  deployment and then copied the  /home/database-files/insertdata.sql file which (we got in step to the /home/sharedfiles path.

and then finally in step 10 we have to add the shared-volume PVC to the dbserver deployment completing the objective.

So, the older volume config-map-pvc is not required after it's purpose is served. I think it is logical to remove it as far as this lab's objective is concerned.

[MikeInAZ]

Thanks, it would make more sense to remove the shared volume from the app server in #9, then present it to the dbserver in #10 to show how the data on the volume persists

[Chetan_Tiwary_]

ok @MikeInAZ  anyways thanks for your feedback!

[MikeInAZ]

another thing i just noticed on the 5.9 lab is the #10 is displayed at ".0." and #11 is ".1."

[Chetan_Tiwary_]

oh yes ! Thanks @MikeInAZ !