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Persistent 502 Bad Gateway errors with nginx (possibly Varnish related?)
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Description

Problem: In this thread on community noticeboard, @NotoriousRBG reported not being able to login into their wiki, and getting persistent 502 Bad Gateway issues with the nginx web server

Reproducable? Yes, while I can access the wiki logged out and CentralAuth does auto-sign me in to the wiki, when I navigate away from the page, persistent 502 Bad Gateway issues are hit. Cannot access wiki logged in at all. To be clear, I had never accessed this wiki prior today, too.

Appears to possibly be a Varnish, nginx web server configuration, or cache problem

Event Timeline

Dmehus triaged this task as Unbreak Now! priority.Dec 14 2020, 23:40
Dmehus created this task.
Reception123 lowered the priority of this task from Unbreak Now! to High.Dec 15 2020, 05:47
Reception123 claimed this task.

This is now fixed. Due to T6593, please do not use the autopromote function for the time being until the issue is fixed.