Regular EOL errors for UpdateRegistration

[ni-cwinkelmann]

Problem description

Hello,

we're running Graylog in a kubernetes environment and on all of our collector sidecars are raising the following error "randomly" for the UpdateRegistration event:

Aug 27 18:24:36 some-host graylog-sidecar[5995]: time="2020-08-27T18:24:36+02:00" level=error msg="[UpdateRegistration] Failed to report collector status to server: Put https://log.example.org/api/sidecars/some-host.example.org: EOF"

The problem does not occur every time the sidecar tries to update the registration. I also tried to debug the issue myself within the sources but I hit my limits. From what I've seen in the graylog.go file there is an exception for io.EOL errors but the error being returned is an *url.Error type.

As these error messages will be written into the syslog almost every second every help would be appreciated.

Kind Regards,
Christopher

Steps to reproduce the problem

Unfortunately not sure how.

Environment

• Sidecar Version: 1.0.2
• Graylog Version: 3.2.4
• Operating System: Ubuntu 18.04 (Docker container)
• Elasticsearch Version: 6.7.0
• MongoDB Version: 3.6.18

[theherodied]

Seeing the same thing.
https://community.graylog.org/t/failed-to-report-collector-status-to-server/19301/2

Not seeing the issue on Windows Client. Only on Linux.

[theherodied]

Same issue reported here
https://community.graylog.org/t/failed-to-report-collector-status-to-server-on-sidecar-side/14533