Upgrading ubuntu 18.04 running kubernetes cluster to ubuntu 20.04

Hi all,
I am trying to upgrade my kubernetes cluster running on ubuntu 18.04 to ubuntu 20.04.
Kindly suggest me points to be careful about while performing this task of underlying OS upgrade as it is in production environment.
Thanks in advance.

Hello @waleedmalikw,
Refer to the OS upgrade lecture in the Maintenance section of the CKA course, it will be useful.

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