How to Easily Monitor Cluster Status

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…

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Install Tomcat 7 on a cPanel Server

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…

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Restoring DNS Zones on a cPanel Server

In 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,…

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Using Skeleton Directories in cPanel

The skeleton (aka “skel”) directory is one of the frequently ignored features on Linux servers, especially for hosting providers.  With the skel directory, you can easily configure a default set of files to be automatically copied into new user accounts, which is particularly useful for customizing the holding pages for new customer websites.   On…

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How to Change the Location of MySQL on cPanel

There may be some situations where you have to move the location of MySQL, for example, if you’re out of disk space or perhaps looking to host it on another device to increase performance. Whatever the reason, moving MySQL is simple and has no impact ct on cPanel’s functionality.   1) Create a backup  …

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5 Ways to Get a User’s Disk Usage

This may seem pretty simple, but I see a lot of questions about how to get a user’s disk space usage on a cPanel user. I put together a quick list of 5 simple ways for the average admin:   1) Good ole’ cPanel/WHM. You can see the usage on the left-hand side of cPanel,…

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Upgrading MySQL Without Breaking PHP

Update: Please be advised that this post does not apply to you if you’re running EasyApache 4, because EA4 uses PHP RPMs and MySQL client compatibility libraries. Please make sure you are following the instructions below that pertain to your system! There’s a dilemma among system administrators of high-traffic servers when it comes to doing…

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Restoring Database Privileges

I’ve seen several cases in the last few months where database users seemingly “disappear” or privileges appear to become invalid when restoring MySQL data or an entire server from raw backups. This may commonly be attributed to a MySQL version mismatch, for example, when a server is running MySQL 5.0 and then is suddenly running…

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Installing Custom MySQL Versions

Update 2/14/14: These instructions have been updated to apply to 11.36+. If at all possible, you should use WHM to install MySQL, however, if you need a version of MySQL outside of what they are offering in current cPanel versions, it is possible to install your own versions. These instructions can also be used to…

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