The Support Log Gather operator is supported on a Proxy-based cluster i.e. it can inject HTTP_PROXY, et al. env vars on the Pod that uploads the must-gather tar to Red Hat customer support portal servers.

An user of OpenShift with HTTPS_PROXY cluster ALWAYS requires a well-known CA to be injected in order to allow transfers over the network.       

support-log-gather-operator.v4.20.0-202511182227, 

OpenShift v4.20.3

Always

Create a cluster with HTTPS_PROXY,

Install support-log-gather-operator through OLM,

Create a MustGather object with uploadTarget,

Upload to access.redhat.com will fail with CA verification error.

SSL certificate problem: failed to verify the legitimacy of the server and therefore could not
establish a secure connection to it    

Pod launched by the operator for uploading tar to Red Hat servers, should inject TRUSTED_CA or similar.