How do I create a volume in kubernetes so that it doesn t get detroyed when pods die

Question

I am having a docker image which when created should check if the volume is empty, in case it should be initialized with some data. This saved data must remain available for other pods with the same or different image.

Can anyone resolve this query?

Thanks.

Answer 1

Here is a solution to your problem:

You can mount the pod into the node and hence save the data in the node so when new pod will create in the same node it will have an access to the same volume.

Pods on the same node can create deadlock for the same resource. So what can we do is share storage meaning and create one storage and every pod will claim storage in the same storage.

Just watch this webinar to clear your doubts :https://www.youtube.com/watch?v=n06kKYS6LZE

I hope it would help you resolve your query.

Answer 2

if you need to do this is a multi node enviroment u need a persistenct volume mount whics should be shared like NFS 

and then u just need to define  as part of your deployment yaml

- name: app-data-vol (your nfs storage name)
  mountPath: /var/opt/app/conf app directory to mount
  subPath: app/conf  ( relative  path for the mount)