On a cPanel server, you have a domain and want to set a catch all email address using SSH. You just have to do the following:

Login to your server as root

root# nano /etc/valiases/yourdomain.com

If you want to set the catch all email to something@somedomain.com do the following:

*: something@somedomain.com

That’s it!

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On your cPanel dedicated server, for an email the mailbox quota is displayed wrong – follow the below steps:

Login to your server as root
cd /home/username/mail/domain.com/emailaccount
rm -rf maildirsize

Now, login to cPanel
Go to email account and change the quota for particular email account.
(Once you change quota, it will recreate file maildirsize automatically)

You can also delete maildirsize file from cpanel > file manager

That’s it!

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You have a cPanel server and if you’re receiving messages like below, in your emails and you do not need this messages in your inbox.

spamd failed @ Fri May 23 20:32:36 2008. A restart was attempted automagically.

Within your WHM > Security > Service manager there are two checkboxes one is “enabled” and other is “monitor” just uncheck the monitor one and you will not receive any more notification emails in your inbox.

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On a cPanel server if you get the error: Error from park wrapper: domain.com is already configured while adding an add-on domain under cPanel. Make sure to remove the domain.com entries from:

/var/named/domain.com.db
/etc/httpd/conf/httpd.conf
/var/cpanel/users/username
/etc/userdomains
/etc/localdomains

Renaming or commenting will not help; you will have to remove the entries completely. Try now.

This worked for me.

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php.ini is a configuration file that is read when a php script gets executed, when the php script starts it looks for it in the current working directory, if it’s not present then it will check for the main servers php.ini . It contains the directives with their local values and master values – few most common directives are: register_globals, allow_url_include , allow_url_fopen , open_basedir etc…

So, you must be wondering how to find the path for php.ini on your cPanel web server. Assuming that you have root access the command to check the path is:

root@server# php –i | grep php.ini
Configuration File (php.ini) Path => /usr/local/lib/php.ini

If you’re not a system admin and you do not have root access, but want to know about the PHP directives which is on the server on which your site is hosted – this can be done by creating a simple PHP file and accessing it with your favorite browser. Just add the below code in the PHP file:

<?
phpinfo();
?>

I hope you see all the information that you require.

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On a Linux system for a system administrator it is necessary to check disk usage on the server and make sure that the disk space does not get 100% and cause problem for the users, so as a routine you should always check for disk space.

The command to check disk space on the complete server is:

root@server# df –h

If a particular partition is consuming too much disk space and you need to find which folder under that partition is using it, for example the partition is /var you can use the command:

root@server# cd /var

root@server# du –sh *

This will display the size of each directory under the /var partition.

So, be proactive and keep your server always healthy.

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You have added a domain on your cPanel dedicated server and when you checked “list accounts” under your Webhost Manager (WHM) the domain is not listed, however you can see the hosted domain on your server using SSH. This is because your domain database has not been updated. Just execute the following command on your cPanel server to get this fixed.

root@server# /scripts/updateuserdomains

And, now check it under your WHM > List accounts. You will see the domain listed there.

That’s it!

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Log file is a file which stores all the information of all files that are accessed, and they also have errors which help a system administrator to troubleshoot issues and fixing them to make the web server stable. Few logs can be found below:

Apache web server

/usr/local/apache/logs/access_log
/usr/local/apache/logs/error_log
/usr/local/apache/domlogs/domain.com

MySQL database server

/var/lib/mysql/server.hostname.com.err

Exim mail server

/var/log/exim_mainlog
/var/log/exim_paniclog
/var/log/exim_rejectlog

Courier-IMAP

/var/log/maillog

cPanel control panel

/usr/local/cpanel/logs/error_log
/usr/local/cpanel/logs/access_log
/usr/local/cpanel/logs/license_log
/usr/local/cpanel/logs/login_log
/usr/local/cpanel/logs/stats_log

FTP server

/var/log/messages
/var/log/xferlog

System logs

/var/log/messages
/var/log/boot.log
/var/log/cron
/var/log/dmesg

Security logs

/var/log/secure
/var/log/messages

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On a cPanel dedicated web server, while monitoring the stats I have come across the error where it was showing that /var/cpanel/lastrun was last updated 841266 seconds ago.

To fix this I have executed the script, this may take some time – so check after an hour.

/scripts/runstatsonce

That’s it!

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