Apache freezing, How to detect which virtual host is getting hit?

Posted by mr-euro on Server Fault See other posts from Server Fault or by mr-euro
Published on 2010-05-05T11:09:11Z Indexed on 2010/05/05 11:18 UTC
Read the original article Hit count: 239

Filed under:

apache

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memory

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freeze

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log

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timeout

I have a production server that in the last 24 hours has been hard rebooted 4 times due to freezes. Ping is fine but all other services time-out (Apache, SSHd, etc). I have now diagnosed it to Apache running out of memory due to an exorbitant amount of child processes forking suddenly within seconds of starting Apache. Stopping Apache just after rebooting keeps the server stable again.

My two questions are:

Is there a way to detect which of the vhosts is being suddenly hammered without looking into each vhost's access log one by one?
Is there a way to quickly enable/disable vhosts without commenting (#) them all out in httpd.conf?

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