----- "james" <james@xxxxxxxxxxxxxxxx> wrote: > I'm having an issue with an apache web server running on CentOS5. > After a few days/weeks of running the server will become unresponsive > and will require a physical reboot in order to come back online. The > system is so unresponsive when the issue occurs that login at console > is not even possible. What does syslog say? OOM kills happening? What does the error log say? > I have atop installed and have looked back before the crash to see > what happened process wise and I can see the http starts using a lot > of memory and CPU usage. The vmcommit jumps from 1.8 GB to 4.8GB in a > matter of a few minutes. The VSIZE of the httpd process jumps from > 8.1GB to 36.9GB. So apache is doing something -- but how can I get > historical data for this? I also see that paging is very active, > probably why the server is unresponsive. I have looked through the > apache logs and system logs and there is nothing obvious that is > consuming all that memory. I know of the server-status module for > apache but that is only useful if you can get to the server during the > crash (I can't) and doesn't have any historical data. http://httpd.apache.org/docs/current/programs/other.html#log_server_status How does your MPM config look like? Take a look at: http://wiki.apache.org/httpd/PerformanceScalingUp > Once thing I have seen from server-status while the server is > responding is the presence of many of these type of requests to the > server from the server itself (always to "example.com" which is the > first virtualhost listed in the apache config). I have researched this > and on the apache wiki they say this is NOT a problem, however I don't > see this at all on my other webservers. There are around 50-60 entries > like the below at any one time -- meanwhile the server is handling > between 2-5 requests. > > > 8-5 - 0/0/403 . 0.00 2237 0 0.0 0.00 7.07 ::1 example.com > OPTIONS * HTTP/1.0 > The unresponsive server issue occurs seemingly randomly, last time in > the middle of the night with little or no user traffic. What does your monitoring say? What does your access log say? > James i -- Igor GaliÄ Tel: +43 (0) 664 886 22 883 Mail: i.galic@xxxxxxxxxxxxxx URL: http://brainsware.org/ --------------------------------------------------------------------- The official User-To-User support forum of the Apache HTTP Server Project. See <URL:http://httpd.apache.org/userslist.html> for more info. To unsubscribe, e-mail: users-unsubscribe@xxxxxxxxxxxxxxxx " from the digest: users-digest-unsubscribe@xxxxxxxxxxxxxxxx For additional commands, e-mail: users-help@xxxxxxxxxxxxxxxx
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