Error 500 when switch from suPHP to FCGI

[cristian]

Hello! Im trying to setup one server to use FCGI instead of suPHP. Its a shared server with 150 accounts. Every time i try i get error 500 on some sites. I check the file permissions and are ok, how can i debug this problem?

Here is a sample error from apache error_log

[Wed Sep 23 12:00:24 2015] [warn] [client 207.46.13.176] (104)Connection reset by peer: mod_fcgid: error reading data from FastCGI server
[Wed Sep 23 12:00:24 2015] [error] [client 207.46.13.176] Premature end of script headers: index.php

Thanks!

[bogdan.sh]

Hi,

There should be more information in some other apache logs, most probably in suexec_log . The usual thing of such error after switching to FCGI are permissions and ownership isssues, for files and for directories.

[info]

Im pretty sure the problem is one of the Fcgi limits is being reached. You can add my fcgi configuration in WHM "Apache Configuration" -> Include Editor - Pre Virtual Host Include

FcgidMaxRequestsPerProcess 500

FcgidMinProcessesPerClass 0

FcgidMaxProcessesPerClass 8

FcgidMaxProcesses 150

FcgidIdleTimeout 60

FcgidProcessLifeTime 540

FcgidIdleScanInterval 30

BusyTimeout 1500

IPCConnectTimeout 300

IPCCommTimeout 7200

Tweak it according to your needs or server.

Regards

[bogdan.sh]

Also, did you execute cagefsctl --force-update after a switch? Maybe needed binaries are not there?

[cristian]

Thanks, i looked in suexec_log and found those lines

[2015-09-23 13:41:56]: uid: (742/delsatgr) gid: (742/delsatgr) cmd: php5
[2015-09-23 13:41:56]: cannot stat program: (php5)
[2015-09-23 13:41:56]: uid: (742/delsatgr) gid: (742/delsatgr) cmd: php5
[2015-09-23 13:41:56]: cannot stat program: (php5)

[cristian]

Bogdan, it was that!!!!

Thanks!