ChristianGroessinger

client ssl handshake is only working with Mozilla's standard root certificates from certifi package. No custom root certificates possible.

3

**What happened (please include outputs or screenshots)**: urllib3.exceptions.MaxRetryError: HTTPSConnectionPool(host='api.a1.cp.cna.at', port=6443): Max retries exceeded with url: /apis/authentication.k8s.io/ (Caused by SSLError(SSLCertVerificationError(1, '[SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: unable to get local issuer certificate...