Error 503 related to Varnish cache server

Lists: pgsql-www
From: "David G(dot) Johnston" <david(dot)g(dot)johnston(at)gmail(dot)com>
To: PostgreSQL www <pgsql-www(at)postgresql(dot)org>
Subject: Error 503 related to Varnish cache server
Date: 2016-06-28 17:00:36
Message-ID: CAKFQuwZSd0WAP_8k_HsDPH7obptLUz55RGKasmrzjJT29xS2BQ@mail.gmail.com
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Lists: pgsql-www

I'm seeing this error pop-up sporadically on the documentation part of the
website.

/docs/current/static/tutorial-arch.html

Error 503 Backend fetch failed

Backend fetch failed

Guru Meditation:

XID: 460806

Varnish cache server

/docs/devel/static/index.html

Error 503 Backend fetch failed

Backend fetch failed

Guru Meditation:

XID: 231830

Varnish cache server

/docs/9.6/static/tutorial-sql.html

Error 503 Backend fetch failed

Backend fetch failed

Guru Meditation:

XID: 232015

Varnish cache server

David J.


From: Stefan Kaltenbrunner <stefan(at)kaltenbrunner(dot)cc>
To: "David G(dot) Johnston" <david(dot)g(dot)johnston(at)gmail(dot)com>
Cc: PostgreSQL www <pgsql-www(at)postgresql(dot)org>
Subject: Re: Error 503 related to Varnish cache server
Date: 2016-06-28 19:11:06
Message-ID: 5772CBCA.5010702@kaltenbrunner.cc
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On 06/28/2016 07:00 PM, David G. Johnston wrote:
> I'm seeing this error pop-up sporadically on the documentation part of
> the website.
>
> /docs/current/static/tutorial-arch.html
>
> Error 503 Backend fetch failed
>
> Backend fetch failed
>
> Guru Meditation:
>
> XID: 460806
>
> Varnish cache server

did this happen today or over a longer period of time?

We did some large scale reboots of VMs today to deal with various
security updates in the base OS we use - so intermediate issues could be
explained by that...

Stefan


From: Christophe Pettus <xof(at)thebuild(dot)com>
To: Stefan Kaltenbrunner <stefan(at)kaltenbrunner(dot)cc>
Cc: "David G(dot) Johnston" <david(dot)g(dot)johnston(at)gmail(dot)com>, PostgreSQL www <pgsql-www(at)postgresql(dot)org>
Subject: Re: Error 503 related to Varnish cache server
Date: 2016-06-28 19:16:44
Message-ID: B9B69A31-7351-45F1-8434-8E0F2830824C@thebuild.com
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On Jun 28, 2016, at 12:11 PM, Stefan Kaltenbrunner <stefan(at)kaltenbrunner(dot)cc> wrote:

> did this happen today or over a longer period of time?

This just happened to me. Interestingly, it wasn't on an initial load of the page; the page reloaded itself, going from the correct content to this error.


From: Melvin Davidson <melvin6925(at)gmail(dot)com>
To: Christophe Pettus <xof(at)thebuild(dot)com>
Cc: Stefan Kaltenbrunner <stefan(at)kaltenbrunner(dot)cc>, "David G(dot) Johnston" <david(dot)g(dot)johnston(at)gmail(dot)com>, PostgreSQL www <pgsql-www(at)postgresql(dot)org>
Subject: Re: Error 503 related to Varnish cache server
Date: 2016-06-28 19:22:12
Message-ID: CANu8FizP1pC6gcKpODY+CbXMfcvEg4L_ZkaR7rNBRSqgVPt6aQ@mail.gmail.com
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On Tue, Jun 28, 2016 at 3:16 PM, Christophe Pettus <xof(at)thebuild(dot)com> wrote:

>
> On Jun 28, 2016, at 12:11 PM, Stefan Kaltenbrunner <stefan(at)kaltenbrunner(dot)cc>
> wrote:
>
> > did this happen today or over a longer period of time?
>
> This just happened to me. Interestingly, it wasn't on an initial load of
> the page; the page reloaded itself, going from the correct content to this
> error.
>
> --
> Sent via pgsql-www mailing list (pgsql-www(at)postgresql(dot)org)
> To make changes to your subscription:
> http://www.postgresql.org/mailpref/pgsql-www
>

*fyi, I have no trouble accessing those url's.*

*Have you tried clearing your cache and reloading?*

--
*Melvin Davidson*
I reserve the right to fantasize. Whether or not you
wish to share my fantasy is entirely up to you.


From: Christophe Pettus <xof(at)thebuild(dot)com>
To: Melvin Davidson <melvin6925(at)gmail(dot)com>
Cc: Stefan Kaltenbrunner <stefan(at)kaltenbrunner(dot)cc>, "David G(dot) Johnston" <david(dot)g(dot)johnston(at)gmail(dot)com>, PostgreSQL www <pgsql-www(at)postgresql(dot)org>
Subject: Re: Error 503 related to Varnish cache server
Date: 2016-06-28 19:24:03
Message-ID: 200A41B5-9329-4ADA-8A00-AE2A90B4E75B@thebuild.com
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On Jun 28, 2016, at 12:22 PM, Melvin Davidson <melvin6925(at)gmail(dot)com> wrote:

> fyi, I have no trouble accessing those url's.
>
> Have you tried clearing your cache and reloading?

It's (very) transient, not consistent.

--
-- Christophe Pettus
xof(at)thebuild(dot)com


From: "David G(dot) Johnston" <david(dot)g(dot)johnston(at)gmail(dot)com>
To: Stefan Kaltenbrunner <stefan(at)kaltenbrunner(dot)cc>
Cc: PostgreSQL www <pgsql-www(at)postgresql(dot)org>
Subject: Re: Error 503 related to Varnish cache server
Date: 2016-06-28 19:36:11
Message-ID: CAKFQuwYy8zo6=1=_79rguBAj_X3a+aMQKCBpV+cCiPtXSt4v=A@mail.gmail.com
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On Tuesday, June 28, 2016, Stefan Kaltenbrunner <stefan(at)kaltenbrunner(dot)cc>
wrote:

> On 06/28/2016 07:00 PM, David G. Johnston wrote:
> > I'm seeing this error pop-up sporadically on the documentation part of
> > the website.
> >
> > /docs/current/static/tutorial-arch.html
> >
> > Error 503 Backend fetch failed
> >
> > Backend fetch failed
> >
> > Guru Meditation:
> >
> > XID: 460806
> >
> > Varnish cache server
>
> did this happen today or over a longer period of time?
>
> We did some large scale reboots of VMs today to deal with various
> security updates in the base OS we use - so intermediate issues could be
> explained by that...
>
>
> Stefan
>

Got a
​off-list ​
reply from Stephen
​ Frost​
that this was likely update related. I have never seen it before the email
that I sent
​ and am not seeing it now.​

Dav
​id J.


From: Stephen Frost <sfrost(at)snowman(dot)net>
To: "David G(dot) Johnston" <david(dot)g(dot)johnston(at)gmail(dot)com>
Cc: Stefan Kaltenbrunner <stefan(at)kaltenbrunner(dot)cc>, PostgreSQL www <pgsql-www(at)postgresql(dot)org>
Subject: Re: Error 503 related to Varnish cache server
Date: 2016-06-28 19:47:41
Message-ID: 20160628194741.GH21416@tamriel.snowman.net
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* David G. Johnston (david(dot)g(dot)johnston(at)gmail(dot)com) wrote:
> Got a
> ​off-list ​
> reply from Stephen
> ​ Frost​
> that this was likely update related. I have never seen it before the email
> that I sent
> ​ and am not seeing it now.​

Huh. That wasn't intended to be off-list. :)

Things should be pretty stable at this point, everything's been
rebooted.

Thanks!

Stephen