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,…

Read more

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…

Read more

Errors on /scripts/upcp: Undefined subroutine…

When running a cPanel update, you may get the following error: /scripts/upcp /scripts/upcp syntax OK Running Futex Check/Fix……Done Undefined subroutine &Cpanel::Update::automatic_updates_enabled called at /scripts/upcp line 273. To fix this, run the following command: wget -O /root/updatenow.static http://httpupdate.cpanel.net/cpanelsync/RELEASE/scripts/updatenow.static && perl /root/updatenow.static –manual Then you can proceed running a cPanel update: /scripts/upcp –force…

Read more

Fixing Quotas on a cPanel Server

If you go into WHM > List Accounts and all your accounts are showing an unlimited quota and 0 disk space usage, you probably have a quota problem. First thing, try running /scripts/fixquotas This’ll take a while depending on your current disk usage, but will usually fix the problem. If it doesn’t, make sure that…

Read more

User Databases Missing from cPanel

After upgrading to cPanel 11.28, a number of our users indicated that databases were missing from their cPanels, despite the actual databases existing on the server. There are a number of things that can cause this, including corrupted Perl modules and MySQL not running, but the major cause that I’ve seen is from the new…

Read more

Performance Tip: Disable Optimizefs

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 more

Accessing cPanel Through A Firewall

There’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 more

Fixing Permissions of Valiases

I 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 more

Log in