I'm getting this error intermittently on our site upstream connect error or disconnect/reset before headers. reset reason connection termination", once at the start of the day, and it goes away after refresh (not always reproducible as well).
Before this error, we get this Error (intermittently) this server could not prove that it is test.somedomain.xyz; its security certificate is from *.somedomain.xyz. this may be caused by a misconfiguration or an attacker intercepting your connection and when we choose to proceed unsafely, we ends up getting above upstream error (intermittently).
I read that we get this error security certificate error when invalid domain is added in the ssl certificate, but in our case it couldn't be the case because it starts working upon refresh.
Need to understand the possible reasons that can cause this issue. Thanks.
