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Hi,
I am dedicated server running Archlinux, and sometimes server just stop responding (http, https, ssh, ...). But after restart, everything is working again. But I do not know why the server stopped at first place.
I checked logs but no error here... Any tips on what may be causing this?
Thanks a lot, any help would be much appreciated.
PS: I am not sure if this belong to here, but I think so.
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Does the server otherwise appear to run as usual, as in, can you see log entries dated after network connectivity is lost? Do you have local access to the server to poke around while it's down? Are you able to confirm whether the NIC, routes, firewall, etc. on the server all appear ok when it goes down? Can you ping the server? Can you ping 127.0.0.1 and/or remote IPs from the server.
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No, there is no logs after the connectivity is lost (I have cron running every minute, so I would noticed)... And I cannot ping server ("Destination Host Unrechachable" or something like that). There is no local access either (ssh fails with "Timeout exceeded" or something similar)
PS: thanks for answer
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Sounds like a kernel panic. Diagnosing this is going to be somewhat difficult without local access to the machine. Is there anything special about the server platform? Physical or virtualised (which hypervisor)? You may be able to search around and find specific to the environment and symptoms and running fsck on the volumes wouldn't hurt either, but it is admittedly a longshot.
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It is dedicated server and I do not suspect anything to special, here is output of "uname -a" if it can help...
Linux jirkas 3.0-ARCH #1 SMP PREEMPT Wed Oct 19 10:27:51 CEST 2011 x86_64 Intel(R) Xeon(R) CPU L3406 @ 2.27GHz GenuineIntel GNU/Linux
Kernel panics I had before (not enough memory) but I solved that by tunning down httpd... but there was logs about this. Also I turn on "reboot on panic" kernel option (not sure if it is called exactly that way), which was supposed to solve problems with panics.... but it my problem is caused by kernel panic... I do not understand why server is not rebooting.
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