Connection issue - accessing CAS in containerized Viya 4 environment from local Python client.

My Python client is a local Jupyter notebook application running on my laptop. On my server, I have published both the HTTP and Binary CAS Node ports and also exposed them as Load Balancers, providing external IPs.

As a first check - I first used swat to access CAS from a Python client on the server - viz. through SAS Studio. Connections to https and bin ports are both successful.

There are two different error messages I get - both are SSL certificate related. The first one is when I connect with the below format ( is the alias for my ingress)

Situation 1 :

os.environ['CAS_CLIENT_SSL_CA_LIST']="trustedcerts.pem"

s = swat.CAS(hostname="<host>/sas-cas-server-default-http", port=443, protocol="https",
              username="user",password=getpass.getpass("Enter password"))

Message (error portion):

SSLCertVerificationError: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: unable to get local issuer certificate (_ssl.c:997)

Variants - tried with -bin (cas protocol) and with -client, port=443 and protocol=https

Next, I tried providing a hostname directly, and got the following error (which is a little funny, given that the hostname is actually part of the list of hosts.)

CertificateError: hostname '**10.A.B.C**' doesn't match either of '10.A.B.A', '**10.A.B.C**', 'controller', 'controller.sas-cas-server-default', '......'

I have verified my certificate and it is obtained from the cluster directly in per format.

Start with the swat.CAS connection setup described for the local Jupyter client, including CAS_CLIENT_SSL_CA_LIST, trustedcerts.pem, the ingress alias, and the published HTTP and binary ports. Reproduce both SSL errors and compare the certificate and hostname presented through the ingress or load balancer with the hostname supplied to swat.CAS; done means the connection path and required configuration are identified.