@damjess did you succeed to fix those errors? I’m interested a lot to know “how” if you did!
We have the same errors here, on-premise version 20.10 which was perfectly working on an internal server in-house but now that we have moved (re-installation) that into a new stack (same version), no events get processed, as soon as one of the sentry sdk send something to sentry server the docker logs output that:
{“log”:“2021-02-26T19:27:05Z [relay_server::actors::upstream] ERROR: authentication encountered error: could not send request to upstream\n”,“stream”:“stderr”,“time”:“2021-02-26T19:27:05.613792963Z”}
{“log”:" caused by: Failed to connect to host: Failed resolving hostname: no record found for name: web type: AAAA class: IN\n",“stream”:“stderr”,“time”:“2021-02-26T19:27:05.613834161Z”}
{“log”:" caused by: Failed resolving hostname: no record found for name: web type: AAAA class: IN\n",“stream”:“stderr”,“time”:“2021-02-26T19:27:05.613839988Z”}
{“log”:" caused by: Failed resolving hostname: no record found for name: web type: AAAA class: IN\n",“stream”:“stderr”,“time”:“2021-02-26T19:27:05.613844035Z”}