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diff --git a/zarb-ml/mageia-sysadm/2010-November/000681.html b/zarb-ml/mageia-sysadm/2010-November/000681.html new file mode 100644 index 000000000..ab7d21338 --- /dev/null +++ b/zarb-ml/mageia-sysadm/2010-November/000681.html @@ -0,0 +1,90 @@ +<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2//EN"> +<HTML> + <HEAD> + <TITLE> [Mageia-sysadm] Http server problem + </TITLE> + <LINK REL="Index" HREF="index.html" > + <LINK REL="made" HREF="mailto:mageia-sysadm%40mageia.org?Subject=Re%3A%20%5BMageia-sysadm%5D%20Http%20server%20problem&In-Reply-To=%3C20101120092518.GE27549%40sisay.ephaone.org%3E"> + <META NAME="robots" CONTENT="index,nofollow"> + <META http-equiv="Content-Type" content="text/html; charset=us-ascii"> + <LINK REL="Previous" HREF="000680.html"> + <LINK REL="Next" HREF="000682.html"> + </HEAD> + <BODY BGCOLOR="#ffffff"> + <H1>[Mageia-sysadm] Http server problem</H1> + <B>Michael scherer</B> + <A HREF="mailto:mageia-sysadm%40mageia.org?Subject=Re%3A%20%5BMageia-sysadm%5D%20Http%20server%20problem&In-Reply-To=%3C20101120092518.GE27549%40sisay.ephaone.org%3E" + TITLE="[Mageia-sysadm] Http server problem">misc at zarb.org + </A><BR> + <I>Sat Nov 20 10:25:18 CET 2010</I> + <P><UL> + <LI>Previous message: <A HREF="000680.html">[Mageia-sysadm] [338] - allows the PATH_TO_FILE value to be overidden for testing purpose +</A></li> + <LI>Next message: <A HREF="000682.html">[Mageia-sysadm] [339] Merge remote branch 'vm_valstar/master' +</A></li> + <LI> <B>Messages sorted by:</B> + <a href="date.html#681">[ date ]</a> + <a href="thread.html#681">[ thread ]</a> + <a href="subject.html#681">[ subject ]</a> + <a href="author.html#681">[ author ]</a> + </LI> + </UL> + <HR> +<!--beginarticle--> +<PRE>Hi, +as some of you may have seen, the http server was down this +morning on mageia.org since 00:18 ( CEST ). The server is still hosted on zarb.org, +so I suspect no one could restart it except the admin team. +I did restarted on 09h35. + +><i>From what I have seen, the problem was caused by a http +</I>process that was not killed on midnight. The restart was caused by +automated cfengine upgrade, after installing new php ( [3] MDVSA-2010:239 ). + +Munin[1] show us a peak in IO on /var, /home and swap that somehow impacted +mysql, postfix and nagios. I suspect the cause was the swap activity due to some +problem in the apache process. + +My own analysis is that the apache restart script was unable to cope with the +fact that one process was not killed. As systemd coder remind us [2], this +is quite hard to do properly on linux with current tools. + +I also suspect that php upgrade somehow messed with apache in some wrong +way, causing weird behavior. This is likely unreproductible and undebuggable, +maybe a race condition due to the high activity of the server combined +to the slowness, I do not know. Anyway, I think we are safe until next php +upgrade. + + +[1] <A HREF="https://www.zarb.org/munin/servers/ryu/index.html">https://www.zarb.org/munin/servers/ryu/index.html</A> +[2] <A HREF="http://0pointer.de/blog/projects/systemd-for-admins-4.html">http://0pointer.de/blog/projects/systemd-for-admins-4.html</A> +[3] <A HREF="http://www.mandriva.com/en/security/advisories?name=MDVSA-2010:239">http://www.mandriva.com/en/security/advisories?name=MDVSA-2010:239</A> + +-- +Michael Scherer +</PRE> + + + + + +<!--endarticle--> + <HR> + <P><UL> + <!--threads--> + <LI>Previous message: <A HREF="000680.html">[Mageia-sysadm] [338] - allows the PATH_TO_FILE value to be overidden for testing purpose +</A></li> + <LI>Next message: <A HREF="000682.html">[Mageia-sysadm] [339] Merge remote branch 'vm_valstar/master' +</A></li> + <LI> <B>Messages sorted by:</B> + <a href="date.html#681">[ date ]</a> + <a href="thread.html#681">[ thread ]</a> + <a href="subject.html#681">[ subject ]</a> + <a href="author.html#681">[ author ]</a> + </LI> + </UL> + +<hr> +<a href="https://www.mageia.org/mailman/listinfo/mageia-sysadm">More information about the Mageia-sysadm +mailing list</a><br> +</body></html> |