ca is the Certificate Authority (CA) that issued the client's certificate, in PEM format. It typically contains the intermediate CA followed by the root CA. This chain of trust is used to verify the server's MTLS X509 certificate.
commonName
string
commonName AKA (CN) is the fully qualified domain name (FQDN) for which the certificate is to be used. It's important in the context of MTLS as it is used to match the server's certificate to ensure the server is who it claims to be.