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502 from Gitlab-pages on artifacts preview

Summary

Gitlab-Pages displays 502 on artifacts preview

Steps to reproduce

  1. On Job page click on "Browse" in Job artifacts section
  2. Chose index.html file
  3. Click on link displayed on "You are being redirected away from GitLab" page
  4. Got 502

Relevant logs and/or screenshots

Log from gitlab-pages

{"level":"info","msg":"http: invalid Content-Length of \"-1\"","time":"2023-07-13T11:50:24+02:00"}

Gitlab version

gitlab-omnibus v16.1.1

Possible fixes

In /var/opt/gitlab/nginx/conf/gitlab-pages.conf I added:

proxy_http_version 1.1;
proxy_set_header Connection "";

after "proxy_set_header X-Forwarded-Proto http;" what fixed the problem.