[CentOS] Server unresponsive until reboot, memory exhausted

William Warren hescominsoon at emmanuelcomputerconsulting.com
Wed Dec 29 01:19:19 UTC 2010


On 12/28/2010 5:18 PM, Nataraj wrote:
> On 12/28/2010 01:41 PM, james wrote:
>> >Do you have everything *else* updated? And what kind of web service
>> >are you running?
>>
>> >There's a lot of third party freeware and commercial tools that was
>> >not written with any kind of resource management in mind, and which
>> >may require a simple web server restart on a regular baris to free
>> >memory. (MusicBrainz: I remember porting MusicBrainz.....)
>>
>> Yes, all the packages are up to date. General web services -- static 
>> HTML, and the rest is mainly wordpress.
>>
>> You may be right about the restart, but I would like to know WHAT is 
>> crashing my web server regardless. We are not running any shiftily 
>> coded sites or apps on this server that I'm aware of (obviously 
>> something is shifty!). Is anyone aware of any other methods for 
>> drilling into the problem?
>>
>> >Look in /var/log/http/*.
>>
>> Yes, these are the web server logs I am referring to having checked.
>>
>> >Do you have a search engine scanning your web server?
>>
>> Hmm, no, nothing systematic. The usual crawlers out there but nothing 
>> we are doing.
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>
> I think the answer will come from analyzing your log files and 
> possibly running something under cron (or in a shell script that wakes 
> up periodically) to gather memory/resource utilization.  Even look at 
> a web log analyzer, like analog and see if there is a correlation 
> between web server hits and resource usage.  You could also try 
> upgrading your web server/plugins or checking bugzilla for related bugs.
>
> Nataraj
>
>
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What's your http.conf?  There's an setting where you can limit the 
amount of time a process/thread stays alive..you can limit ram usage by 
lowering that value.
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