Secrets are not shared across namespaces, how do you mount CA cluster certificates?

[alok87]

As mentioned here #1930 (comment)

Since CA certificates are required for pods running outside of kafka namespace(namespace where kafka cluster is installed), how do I use the CA certificates in the pods running in other namespace.

Concern: Since strimzi takes care of renewing the certificates, manually copying the certificates would lead to issues later.

[alok87]

Dupe of #2513 (comment)