Debian Bug report logs - #660224
munin-fastcgi-graph hangs, server replies with Error 500

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Message #5 received at submit@bugs.debian.org (full text, mbox, reply):

From: "Estelmann, Christian" <c.estelmann@gmx.net>

To: submit@bugs.debian.org

Subject: munin-fastcgi-graph hangs, server replies with Error 500

Date: Fri, 17 Feb 2012 15:33:52 +0100

Package: munin
Version: 1.4.5-3

Hi,

I've configured Munin to use CGI graphing. On one machine it is running, on another not. Both have the same packages installed and the same configs.

I am not good in Perl programming, but what i have found out is, that when /usr/lib/cgi-bin/munin-fastcgi-graph is executed, it hangs on semop($semid,$opstring); in sem_get(). The variables $semid and $opstring are set.

A snip of /var/log/apache2/error.log
[Fri Feb 17 14:53:10 2012] [warn] FastCGI: (dynamic) server "/usr/lib/cgi-bin/munin-fastcgi-graph" (uid 0, gid 0) started (pid 7524)
[Fri Feb 17 14:53:10 2012] [warn] FastCGI: server "/usr/lib/cgi-bin/munin-fastcgi-graph" has failed to remain running for 30 seconds given 3 attempts, its restart interval has been backed off to 600 seconds
[Fri Feb 17 14:53:14 2012] [warn] FastCGI: (dynamic) server "/usr/lib/cgi-bin/munin-fastcgi-graph" (uid 0, gid 0) started (pid 7574)
[Fri Feb 17 14:53:14 2012] [warn] FastCGI: server "/usr/lib/cgi-bin/munin-fastcgi-graph" has failed to remain running for 30 seconds given 3 attempts, its restart interval has been backed off to 600 seconds
[...]
[Fri Feb 17 14:53:35 2012] [warn] FastCGI: (dynamic) server "/usr/lib/cgi-bin/munin-fastcgi-graph" (uid 0, gid 0) started (pid 7726)
[Fri Feb 17 14:53:35 2012] [warn] FastCGI: server "/usr/lib/cgi-bin/munin-fastcgi-graph" has failed to remain running for 30 seconds given 3 attempts, its restart interval has been backed off to 600 seconds
[Fri Feb 17 14:53:38 2012] [warn] FastCGI: scheduled the start of the last (dynamic) server "/usr/lib/cgi-bin/munin-fastcgi-graph" process: reached dynamicMaxClassProcs (10)
[Fri Feb 17 14:53:38 2012] [warn] FastCGI: (dynamic) server "/usr/lib/cgi-bin/munin-fastcgi-graph" (uid 0, gid 0) started (pid 7740)
[Fri Feb 17 14:53:38 2012] [warn] FastCGI: server "/usr/lib/cgi-bin/munin-fastcgi-graph" has failed to remain running for 30 seconds given 3 attempts, its restart interval has been backed off to 600 seconds
[Fri Feb 17 14:53:41 2012] [warn] FastCGI: server "/usr/lib/cgi-bin/munin-fastcgi-graph" has failed to remain running for 30 seconds given 3 attempts, its restart interval has been backed off to 600 seconds
[Fri Feb 17 14:53:44 2012] [error] [client V.W.X.Y] FastCGI: comm with (dynamic) server "/usr/lib/cgi-bin/munin-fastcgi-graph" aborted: (first read) idle timeout (30 sec)
[Fri Feb 17 14:53:44 2012] [warn] FastCGI: server "/usr/lib/cgi-bin/munin-fastcgi-graph" has failed to remain running for 30 seconds given 3 attempts, its restart interval has been backed off to 600 seconds
[Fri Feb 17 14:53:44 2012] [error] [client V.W.X.Y] FastCGI: incomplete headers (0 bytes) received from server "/usr/lib/cgi-bin/munin-fastcgi-graph"

In /var/log/munin/munin-cgi-graph.log and /var/log/munin/munin-graph.log is nothing logged.

If you need further informations just ask. :)

Thanks.

Christian

Message #10 received at 660224@bugs.debian.org (full text, mbox, reply):

From: Holger Levsen <holger@layer-acht.org>

To: "Estelmann, Christian" <c.estelmann@gmx.net>, 660224@bugs.debian.org

Subject: Re: [Packaging] Bug#660224: munin-fastcgi-graph hangs, server replies with Error 500

Date: Fri, 17 Feb 2012 17:41:28 +0100

Hi Christian,

thanks for your bug report!

On Freitag, 17. Februar 2012, Estelmann, Christian wrote:
> I've configured Munin to use CGI graphing. On one machine it is running, on
> another not. Both have the same packages installed and the same configs.

Can you please try to reproduce this bug with munin2.0~beta7 from 
experimental? The packages install fine on squeeze.


cheers,
	Holger

Message #15 received at 660224@bugs.debian.org (full text, mbox, reply):

From: "Estelmann, Christian" <c.estelmann@gmx.net>

To: 660224@bugs.debian.org

Subject: Re: [Packaging] Bug#660224: munin-fastcgi-graph hangs, server replies with Error 500

Date: Mon, 20 Feb 2012 16:06:51 +0100

Hi,

First another little bug (I think it is not worthwhile to open another bugreport):
I added experimental to sources.list. While upgrading munin the symlink /etc/apache2/conf.d/munin which pointed to /etc/munin/apache.conf was removed.

Back to topic:
With munin 1.999.4603-1 / 2.0beta7 the graphs are drawn - and yes, it's working very very fast. But I wanted to get the package of debian stable to work :)

Greetings,

Christian

Message #20 received at 660224@bugs.debian.org (full text, mbox, reply):

From: "Estelmann, Christian" <c.estelmann@gmx.net>

To: 660224@bugs.debian.org

Subject: Re: [Packaging] Bug#660224: munin-fastcgi-graph hangs, server replies with Error 500

Date: Tue, 21 Feb 2012 14:23:35 +0100

Hi,

I downgraded to 1.4.5-3 again and switched from fastcgi to cgi. It is working and the the graphs are generated fast enough (quad core CPU with HT, 8 cgi processes). But that was only another workaround.

Greetings,

Christian

Message #25 received at 660224@bugs.debian.org (full text, mbox, reply):

From: Holger Levsen <holger@layer-acht.org>

To: "Estelmann, Christian" <c.estelmann@gmx.net>, 660224@bugs.debian.org, control@bugs.debian.org

Subject: Re: [Packaging] Bug#660224: Bug#660224: munin-fastcgi-graph hangs, server replies with Error 500

Date: Tue, 21 Feb 2012 21:00:03 +0100

notfound 660224 1.999.4603-1
tags 660224 + upstream
thanks

Hi Christian,

On Dienstag, 21. Februar 2012, Estelmann, Christian wrote:
> I downgraded to 1.4.5-3 again and switched from fastcgi to cgi. It is
> working and the the graphs are generated fast enough (quad core CPU with
> HT, 8 cgi processes). But that was only another workaround.

Thanks for your bugreport and for keeping updated with your findings, much 
appreciated. Did you see #609900? 


cheers,
	Holger

Message #32 received at 660224@bugs.debian.org (full text, mbox, reply):

From: Holger Levsen <holger@layer-acht.org>

To: control@bugs.debian.org, 660224@bugs.debian.org

Subject: Re: [Packaging] Bug#660224: Bug#660224: munin-fastcgi-graph hangs, server replies with Error 500

Date: Tue, 21 Feb 2012 23:25:42 +0100

severity 660224 important
thanks

On Montag, 20. Februar 2012, Estelmann, Christian wrote:
> First another little bug (I think it is not worthwhile to open another
> bugreport): I added experimental to sources.list. While upgrading munin
> the symlink /etc/apache2/conf.d/munin which pointed to
> /etc/munin/apache.conf was removed.

I don't have time now, but that needs to be investigated.

(Any takers?)

Message #39 received at 660224@bugs.debian.org (full text, mbox, reply):

From: "Estelmann, Christian" <c.estelmann@gmx.net>

To: 660224@bugs.debian.org

Subject: Re: [Packaging] Bug#660224: Bug#660224: munin-fastcgi-graph hangs, server replies with Error 500

Date: Wed, 22 Feb 2012 10:45:33 +0100

Hi,

>
> Did you see #609900?
>
Yes, I have seen this documentation.

From one day to another it was no longer working. On another machine it 
works well till today. Ther were no differences between the configs (now 
there are, cause of switching from FastCGI to CGI). The machines have 
installed the same packages as well, all from squeeze and squeeze-updates.

When running the fastcgi-script in a terminal on the machine where it is 
working in combination with the webserver it is working in the terminal, 
too. But on the other machine it hangs at that semop()-operation.

Greetings,
Christian

Message #46 received at 660224-done@bugs.debian.org (full text, mbox, reply):

From: Stig Sandbeck Mathisen <ssm@debian.org>

To: 660224-done@bugs.debian.org

Subject: Closing fixed bug

Date: Sat, 14 Apr 2012 19:30:10 +0200

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Version: 1.999.4603-1

This is marked as fixed, closing bug.

-- 
Stig Sandbeck Mathisen

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