Screen short showing error
Users unable to login in most cases, getting error 503 from varnish in return of the login form. If an incorrect password is entered, the form gracefully reloads. The issue seems quite widespread but is hard to reproduce: at least 5 users across 4 wikis.
For each affected user, the issue is often user account- and/or wiki-specific: sometimes a user is unable to access an increasingly large number of wikis; sometimes bypassing caches helps. No other pattern was detected.
Asked for some multi-week grep -c for action=submitlogin&type=login 503 errors in logs, requires shell user.
Some example timestamps: 15 Nov 2014 11:53:10 GMT, 08 Dec 2014 12:32:30 GMT, 08 Dec 2014 12:59:58 GMT, 10 Dec 2014 15:39:46 GMT, 11 Dec 2014 13:18:26 GMT.
When i try login in throogh Mozilla Fire fox i get error message sinc last 4 -5 days.
screen shot of error message enclosed/
Our servers are currently experiencing a technical problem. This is probably temporary and should be fixed soon. Please try again in a few minutes.
If you report this error to the Wikimedia System Administrators, please include the details below.
Request: POST http://gu.wikipedia.org/w/index.php?title=%E0%AA%B5%E0%AA%BF%E0%AA%B6%E0%AB%87%E0%AA%B7:%E0%AA%B8%E0%AA%AD%E0%AB%8D%E0%AA%AF%E0%AA%AA%E0%AB%8D%E0%AA%B0%E0%AA%B5%E0%AB%87%E0%AA%B6&action=submitlogin&type=login&returnto=%E0%AA%AE%E0%AB%81%E0%AA%96%E0%AA%AA%E0%AB%83%E0%AA%B7%E0%AB%8D%E0%AA%A0, from 10.64.0.103 via cp1055 cp1055 ([10.64.32.107]:3128), Varnish XID 3251470154
Forwarded for: 22.214.171.124, 126.96.36.199, 10.64.0.103
Error: 503, Service Unavailable at Sat, 15 Nov 2014 11:53:10 GMT
Same problem is not there in IE or Opera.