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…
Read moreIf 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,…
Read moreUpdated 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…
Read moreIf 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…
Read moreThere 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…
Read moreUpdate: 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…
Read moreSince 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…
Read moreIf you receive an “Internal Death” (generic cPanel speak for “something broke”) when accessing WHM and/or cPanel, the first thing you should do is check the cPanel error logs at /usr/local/cpanel/logs/error_log. You may see something like this: die [Internal Death while parsing [stdin] xxxxx] Read of CDB_File failed: Protocol error at /usr/local/cpanel/Cpanel/CPAN/Locale/Maketext.pm line 217. Cpanel::CPAN::Locale::Maketext::maketext()…
Read moreIn rare situations, the DNS zones located in /var/named might disappear. We’ve heard of this happening after certain bind package updates, or simply due to administrator error. In either case, it may be possible to restore or at least recreate the missing zones. Even if the server in question does not act as a nameserver,…
Read moreUpdate: This feature is automatically enabled as of cPanel 11.36.1.4 If you have RBL’s enabled globally on your server, there may be times when you want to keep certain domains from having their mail scanned against an RBL. While cPanel supports excluding sender IP addresses from these checks, some manual Exim modifications are needed to…
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