Communication among pods encrypted by TLS and 24-hour certificate rotation evidence?

[visdubey]

I have been asked below question by the team, Could you please help me to provide reference/pointer to get those screens/evidence?
Would you be able to provide evidence that communication among pods within the Kubernetes is automatically encrypted using mutual TLS provided by LinkerD? I would like to see that it’s TLS 1.2.
Additionally, is there any type of evidence to support the 24-hour certificate rotation?

[grampelberg]

Look at the securing your service docs to find verification steps.

Look at the certificate after 24 hours to see if it is different.

[visdubey]

Can you please provide more details to it like how to check using commands or any reference in yaml manifest file? I am not able to pinpoint it using your provided answer.

[grampelberg]

The doc includes commands, please follow those commands.