This Knowledge Base (KB) article describes how to rotate an expired /services/tls_ca.
TPCF
Normally, when the environment is in a healthy state, you would follow the official rotation procedure from the Broadcom Documentation Operations Manager 2.9 or later.
Given that the /services/tls_ca is currently expired, the system is in a degraded stated. As a result, you only have to perform a subset of the original procedure to recover the environment.
Operations Manager versions 2.9 or later
Use the Maestro procedure as your baseline procedure. Perform the following steps sequentially:
credhub generate \ --name="/services/new_ca" \ --type="certificate" \ --no-overwrite \ --is-ca \ --duration=1825 \ --common-name="opsmgr-services-tls-ca"
credhub get -n /services/new_ca -k ca > new_ca.ca credhub get -n /services/new_ca -k certificate > new_ca.certificate credhub get -n /services/new_ca -k private_key > new_ca.private_key credhub set -n /services/tls_ca \ --type=certificate \ --root=new_ca.ca \ --certificate=new_ca.certificate \ --private=new_ca.private_key