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Maniphest T4728

Error 503
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Description

Error 503 Backend fetch failed, forwarded for 83.247.102.164, 127.0.0.1
(Varnish XID 108791767) via cp4 at Thu, 19 Sep 2019 15:00:43 GMT.

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Event Timeline

Kees_Langeveld created this task.Sep 19 2019, 15:01
Herald added subscribers: RhinosF1, Reception123. · View Herald TranscriptSep 19 2019, 15:01
Kees_Langeveld added a comment.Sep 19 2019, 15:02

Shortly thereafter solved.

RhinosF1 added a subscriber: Paladox.Sep 19 2019, 15:20

Leaving this open for now as it's been intermittent for a bit and slow but we are aware.

@Paladox Thoughts?

RhinosF1 merged a task: T4732: Intermittent 503s are frequently seen for: https://aman.info.tm.Sep 20 2019, 07:48
RhinosF1 added subscribers: Amanjosan2008, NDKilla, Void and 2 others.
Reception123 merged a task: T4753: Miraheze crashing again.Oct 1 2019, 16:28
Reception123 added a subscriber: Eijitheawesome.
Kees_Langeveld added a comment.Oct 1 2019, 16:46

Error 503 Backend fetch failed, forwarded for 83.247.102.164, 127.0.0.1
(Varnish XID 200802307) via cp4 at Tue, 01 Oct 2019 16:45:10 GMT.

RhinosF1 added a project: Site Reliability Engineering.Oct 1 2019, 20:42

Any update?

Paladox added a comment.Oct 2 2019, 12:46

Still trying to find out why it's causing frequent 503.

RhinosF1 merged a task: T4766: 503 Downtime.Oct 5 2019, 18:27
RhinosF1 added a subscriber: Kinzo.
Paladox triaged this task as Normal priority.Oct 6 2019, 20:13
Void merged a task: T4780: Continuous Downtime (ranchstory.miraheze).Oct 9 2019, 20:21
Void merged a task: T4779: Backend fetch failed.
Void added a subscriber: Catte.
Void added a subscriber: Timboliu999.

Tempted to raise priority, assuming that the two tasks I merged were related to this one.

Void raised the priority of this task from Normal to High.Oct 9 2019, 21:05
Kees_Langeveld added a comment.Oct 10 2019, 06:32

Short disruption:

Error 503 Backend fetch failed, forwarded for 83.247.102.164, 127.0.0.1
(Varnish XID 268635172) via cp4 at Thu, 10 Oct 2019 06:18:57 GMT.

RhinosF1 assigned this task to Paladox.Oct 10 2019, 06:35

We are trying things to resolve it

Timboliu999 added a comment.Oct 10 2019, 12:01

Thanks guys. I had a lot of 503 lately. Hope you can find the cause.
Regards,
Tim

RhinosF1 merged a task: T4771: Miraheze seems very slow recently.Oct 11 2019, 05:31
RhinosF1 added subscribers: Michaeldakin, Andreas.
RhinosF1 removed Paladox as the assignee of this task.Oct 11 2019, 20:01
RhinosF1 added a subtask: T4797: Increase mediawiki servers capacity.
Kees_Langeveld added a comment.Oct 12 2019, 08:18
This comment was removed by Kees_Langeveld.
Kees_Langeveld added a comment.Oct 12 2019, 08:20

Short disruption:

Error 503 Backend fetch failed, forwarded for 83.247.102.164, 127.0.0.1
(Varnish XID 28248768) via cp4 at Sat, 12 Oct 2019 08:16:57 GMT.

Kees_Langeveld added a comment.Oct 15 2019, 21:19

Error 503 Backend fetch failed, forwarded for 83.247.102.164, 127.0.0.1
(Varnish XID 557384484) via cp4 at Tue, 15 Oct 2019 21:18:48 GMT.

Paladox closed this task as Resolved.Oct 19 2019, 12:38
Paladox claimed this task.

We've been monitoring for the last few days and can say this is now fixed! We deployed some fixes on Wednesday and since then uptime has been really awesome!

You should notice performance improvements and better uptime!

Paladox removed a subtask: T4797: Increase mediawiki servers capacity.Oct 19 2019, 12:38