CPanel utilizes a script called “optimizefs” that removes the atime attribute from certain files on the system. For larger servers, this can create a lot of i/o load for a problem that can be fixed simply by mounting your file systems with the noatim Metabolic Masterpiece e flag if your file system is ext2 or…
Read moreThere’s been a long-standing issue from a hosting provider’s point of where cPanel runs on abnormal ports, causing users behind firewalls to be unable to access cPanel. At first, there was cpanelproxy.net which offered (at that time) an automated script that users could install on their hosting accounts to route cPanel traffic over port 80.…
Read moreI wrote this script a while back to fix the permissions of alias files in /etc/valiases when users were having trouble creating forwarders. You can also download the script in plaintext here. #!/bin/bash # Script to fix permissions of valiases # Written by: Vanessa Vasile 5/17/10 # http://thecpaneladmin.com for domain in `cat /etc/userdomains |awk ‘{print…
Read more500 Internal Server Errors are one of the most common PHP issues that I see customer experience, and it will occur mostly on servers with suPHP or PHP running as CGI. These errors can be caused by something on the server, or an issue on the user’s site. Here ‘s what you should do if…
Read moreThis is a simple bash script I wrote to fix the permissions and ownership of files within a cpanel account. To use, simply copy the script your server, chmod 755, and pass the usernames as arguments: ./fixperms user1 user2 user3 You can also run a server-wide loop like this: for i in `ls -A /var/cpanel/users`…
Read moreWhen adding an email forwarder you may see an error like this: Fatal! Write Failure: /etc/valiases/thecpaneladmin.com. Ignore any messages of success this can only result in failure! To fix this, run (replace user with username and domain with the domain name) chown user:mail /etc/valiases/domain.com chmod 644 /etc/valiases/domain.com…
Read moreI recently saw an issue on one of our servers where we were trying to enable Zend Optimizer and IonCube Loaders, but they just won’t show up on a phpinfo page despite showing up via command line: -bash-3.2# php -v PHP 4.4.9 (cli) (built: May 4 2010 13:55:07) Copyright (c) 1997-2008 The PHP Group Zend…
Read moreOne of the servers here at work was giving a 500 Internal Server error whenever a PHP page was loaded. Among the various things that can cause this error when you’re running PHP in CGI mode (suPHP), this error showing up in the Apache log was most unusual. Turns out it’s due to the suphp…
Read moreIn your Exim logs you may see errors like this: Warning: ACL “warn” statement skipped: condition test deferred: ratelimit database not available temporarily rejected connection in ?connect? ACL: ratelimit database not available This likely means the Exim cache databases are corrupted. You can clear them by running: rm -fv /var/spool/exim/db/* Then restart Exim. The files…
Read moreIn cPanel 11.25, you may be seeing errors like this in /var/log/exim_paniclog: 2010-04-15 12:33:27 failed to expand condition “${if exists {$home/etc/$domain/quota}{${if > {${lookup{$local_part}lsearch{$home/etc/$domain/quota}{$value}{0}}}{0}{${if eq {${if exists {$home/mail/$domain/$local_part/maildirsize}{1}{0}}}{0}{${if > {${run {/usr/local/cpanel/bin/eximwrap GETDISKUSED $local_part $domain}}}{${lookup{$local_part}lsearch{$home/etc/$domain/quota}{$value}{0}}}{true}{false}}}{${perl{checkuserquota}{$domain}{$local_part}{$message_size}{${lookup{$local_part}lsearch{$home/etc/$domain/quota}{$value}}}{$home/mail/$domain/$local_part/maildirsize}}}}}{false}}}{false}}” for virtual_user_maildir_overquota router: absolute value of integer “10485760000” is too large (overflow) To fix this, run : /scripts/reset_mail_quotas_to_sane_values –force –confirm –verbose…
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