Site components generating 503 errors

[dlarmeir]

Hello All,

I have a site that is generating the following errors on some PHP files:
--
2010-07-10 11:59:12.954 [INFO] [208.115.111.243:60716-0#mydomain.com] connection to [/tmp/lshttpd/mydomain.com_lsphp.sock.441] on request #0, confirmed, 1, associated process: 6923, running: 0, error: Connection reset by peer!
2010-07-10 11:59:12.954 [NOTICE] [208.115.111.243:60716-0#mydomain.com] Max retries has been reached, 503!
2010-07-10 11:59:12.954 [NOTICE] [208.115.111.243:60716-0#mydomain.com] oops! 503 Service Unavailable
2010-07-10 11:59:12.954 [NOTICE] [208.115.111.243:60716-0#mydomain.com] Content len: 0, Request line:
--

These PHP files were working up until the last couple of days. I have tried recompiling PHP to both version 5.2 and 5.3 but the same issues persist. The platform I am running is wordpress 3.0 - Any suggestions? The log files do not seem to be verbose enough to lead me to a specific issue.

Thanks, Dustin

[NiteWave]

have you installed any new wordpress plugin which need special php decoder/loader?

A recent experience of mine:
some important files need phpshield loader, but not put in right place for php 5.2.x on 64-bit OS (might be ok for 5.1.x)

generally, if you've installed new plugins in recent couple of days, try to disable them first, see if 503 disappear.

[dlarmeir]

NiteWave, thanks for the help and suggestion. The way we were able to resolve this was to switch the script handler from the vhost level to the server level. I am not 100% sure why that fixed it but I guess there was a problem with the vhost script handler configuration. I ruled out the plugin itself by testing it on another Litespeed server with the same PHP version, configuration etc.