When trying to change a user’s shell via WHM, you may occasionally see the following error: Shell could not be modified As shown below: Attempting to change the shell via command line fails as well: # chsh -s /bin/bash myuser Changing shell for myuser. setpwnam: File exists Shell *NOT* changed. Try again later. This means there is a […]
Unable to Change Shell via WHM or CLI Read Post »
In 2010, we released our first cPanel cheat sheet for version 11.25. Admittedly, we haven’t been keeping up with the times. A lot has changed with cPanel over the last few years and an update is well overdue. Though labeled for version 11.42, the new cheat sheet is verified to be accurate for the following
cPanel 11.42 Cheat Sheet Read Post »
There comes a time in every sysadmin’s life where filesystem errors just…happen. Luckily, these are somewhat easy to fix, assuming you don’t have a greater problem involving physical hardware damage. First, you need to know the name of the disk device having the problem. Do a quick df to see what device the affected partition
How to FSCK a Linux Filesystem Read Post »
If you’re running CentOS, you’re probably a few versions behind on Python. Currently, the version packaged for CentOS 5 and 6 is 2.6. Contrary to what the title of this post implies, you actually cannot safely upgrade Python on any Redhat distribution. If you’re feeling brave, try this to see why: yum remove python Warning,
How to Upgrade Python on CentOS Read Post »
Updated 3/9/21 Setting up your cPanel server to send through a third-party mail server is very easy to do, if you understand the basics of how cPanel builds its Exim configs. You never want to edit your exim.conf file directly – your changes will be wiped out any time a cPanel update runs or someone
Implementing SendGrid with Exim on cPanel Read Post »
If you are running cPanel 11.28 or higher (which we hope you are, considering the current release at the time of this writing is 11.40!), you have the option in WHM to automatically disable DNS clustering if too many connection failures occur: While this can be a handy feature, if you have a
How to Easily Monitor Cluster Status Read Post »
There are some situations where you may need to set up multiple shared IP addresses on a server. Some reasons may include grouping accounts per IP or lowering the effect of DDoS attacks if it becomes necessary to block traffic to a specific interface. Whatever the reason, multiple shared IP addresses on a cPanel server
How to Set up Multiple Shared IPs on a cPanel Server Read Post »
Update: cPanel is no longer supported by cPanel for CentOS 7 or newer. It is recommended that you use cpanel4j. The below instructions are no longer relevant for CentOS 6 or older servers, since cPanel now includes Tomat 7 in EasyApache 3. CPanel has soon promised that Tomcat 7 will be supported in a future
Install Tomcat 7 on a cPanel Server Read Post »
Since the release of cPanel 11.32, the cPanel update process has extended OS checks to ensure that you are only updating cPanel on a compatible system. Specifically, you can no longer upgrade past version 11.32 on CentOS 4, or 11.30 on Redhat 9. Trying to do so will verbosely inform you that the upgrade is
cPanel Update Fails with Exit Code 6400 Read Post »
