Error 500 on all php pages

[Chris-777]

Hi folks,

I'm not sure what happened to my webserver - I wasn't doing anything unusual with it, and all of a sudden every php page I bring up throws an error 500 - even phpinfo.php.

I'm looking at error_log, and I see a lot of this:

[Sun Mar 22 22:00:38 2015] [error] [client 66.249.67.31] Premature end of script headers: phpinfo.php

html pages render fine, and I can use WHM without issue. I've been frantically googling, and found some bits about suexec_log reaching 2GB that might cause this. I rotated the log, it's writing to it again, but still no dice. I also restarted apache, restarted my host, and tried enabling and disabling suexec. I'm completely stumped.

Any insight would really be appreciated, as my clients are all dead in the water and I'm totally out of ideas.

Edit:
Server Version: Apache/2.2.29 (Unix) mod_ssl/2.2.29 OpenSSL/0.9.8e-fips-rhel5 mod_bwlimited/1.4

 

[dalem]

you must have done something ??

what are the permissions of your users files
ls -l /home/user/public_html/

 

[24x7ss]

As all your PHP sites are giving 500 error it clearly shows that the issue is with PHP handler. Check which PHP handler you are using now from WHM and try chaning it.

Home >> Service Configuration >> Configure PHP and SuExec

Also, try disabling SuExec first.

 

[Chris-777]

Couldn't tell you what I did - honestly I was just fiddling with a gallery on a vBulletin forum.

Here's a folder list. I'm 99% sure it's permissions based but I've no idea what they should be. I'm testing two domains. One works now, the other doesn't, so I don't think it's php.ini.

Here's one that works (with the actual folder name changed)

-rw-r--r-- 1 user1 user1 168 Mar 22 22:23 /home/user1/public_html/phpinfo.php

Here's one that doesn't:

-rwxr-xr-x 1 user2 user2 168 Mar 22 22:27 /home/user2/public_html/phpinfo.php

I'm going back and forth trying different permissions (755/644/777) but honestly I don't know what these should even be.

 

[dalem]

Permissions should be 0750
/home/user2/public_html/

Permissions should be 0711
/home/user2/

 

[cPanelMichael]

Hello,

You can review /usr/local/apache/logs/error_log to get a better idea of why exactly those error messages are occurring. You can post part of the output here and we can help you determine which file/directory is the source of the permissions issue.

Thank you.