cPanel Resources, Guides, and Tutorials for System Admins :: missysadmin.com

/bin/pwd: Permission Denied

admin — Tue, 12 Aug 2008 08:36:27 +0000

We first saw this error when users were trying to install custom PEAR modules through cPanel:

/bin/pwd: cannot open directory `..’: Permission denied

This appears to be directly related to RHEL/CentOS5, according to cPanel’s blog entry here:

http://blog.cpanel.net/?p=50

Easy fix for cPanel:

/scripts/enablefileprotect

Aquota.user permission denied

admin — Tue, 12 Aug 2008 08:34:37 +0000

If you get this error when setting a quota:

touch: cannot touch `/aquota.user’: Permission denied.

Run:

chattr -ia /aquota.user

No filesystems with quota detected!

admin — Tue, 12 Aug 2008 08:33:36 +0000

On some servers, mainly ones with larger disk arrays, you may experience the following error when attempting to set a quota or run the initial quota setup or fixquotas:

No filesystems with quota detected.

To fix this, you need to make sure the ‘usrquota’ option is located in /etc/fstab for any home partitions:

LABEL=/                 /                       ext3    defaults,usrquota,noatime        0 0

The either reboot, or remount:

mount -o remount /

How to Edit the Exim Greeting

admin — Tue, 12 Aug 2008 08:31:13 +0000

Whenever your mainl server sends to or receives email from other servers, it broadcasts a greeting that looks somewhat like this:

220-your.hostname ESMTP Exim 4.68 #1 Tue, 06 May 2008 19:33:44 -0700
220-We do not authorize the use of this system to transport unsolicited,
220 and/or bulk e-mail.

To edit this greeting, you can edit the following section in /etc/exim.conf:

smtp_banner = "${primary_hostname} ESMTP Exim ${version_number}
#${compile_number} ${tod_full} n
 We do not authorize the use of this system to transport unsolicited, n
 and/or bulk e-mail."

Using the XML API’s with cPanel/WHM

admin — Tue, 12 Aug 2008 08:09:31 +0000

Read the full tutorial at v-nessa.net:

http://www.v-nessa.net/2008/05/07/sexifying-whm-with-xml-api

The XML API’s allow you to script many of the WHM reseller functions using perl or PHP. This is particularly useful for external scripts and integration, or just giving your resellers access to perform certain functions without using WHM.

Install cPanel Proxy Domains

admin — Tue, 12 Aug 2008 08:06:48 +0000

As of cPanel 11.23, proxy functionality has been restored internally without the need for the old cpanelproxy.net script that stopped working after 11.18. Full instructions are here:

http://www.v-nessa.net/2008/07/26/setting-up-cpanel-proxies

In short:

Upgrade to cPanel 11.23 if you have not already
Enable the three proxy settings in WHM > Tweak Settings
Install mod_proxy if it is not already installed, preferably through EA3. Vanessa at v-nessa.net includes instructions for installing the module separately if you do not want to reinstall Apache.

WHM APF Plugin

admin — Sat, 07 Jun 2008 05:08:18 +0000

This plugin allows users with reseller privileges (WHM) to add IPs to their APF.

http://www.v-nessa.net/2008/06/05/whm-apf-plugin

Installing Subversion

admin — Sun, 23 Mar 2008 06:20:06 +0000

It’s best to upgrade to Apache 2.2 with the DAV module enabled, but you may be able to get away with Apache 1.3 with DAV.

cd /usr/src
wget http://www.webdav.org/neon/neon-0.25.5.tar.gz
tar -xvzf neon-0.25.5.tar.gz
cd neon-0.25.5
./configure && make && make install
cd ../
mv neon-0.25.5 neon

After the installation, download the subversion sources from here:

http://subversion.tigris.org/servlets/ProjectDocumentList?folderID=260&expandFolder=74
Untar the archive into a temp directory like /usr/src and enter into the resulting folder. The run these commands to configure and install:

./configure --with-apxs=/usr/local/apache/bin/apxs \
 --with-apr=/usr/local/apache \
 --with-apr-util=/usr/local/apache \
 --with-ssl --enable-dso
make && make install

Verify that the installation was successfully by running svn –version

phpMyAdmin Error: Cannot start session…

admin — Tue, 18 Mar 2008 07:53:07 +0000

Among other problems you might not have noticed, phpMyAdmin might be giving you this error:

phpMyAdmin - Error Cannot start session without errors, please check errors given in your PHP and/or webserver log file and configure your PHP installation properly.

This means that your /tmp partition is full, or if you are on a VPS you are out of free inodes. To check both, type:

df -i

df -h

CentOS Yum GCC-Dummy Error

admin — Fri, 22 Feb 2008 02:12:28 +0000

The following error has been reported while doing yum updates on CentOS 4.x systems:

--> Processing Dependency: glibc-common = 2.3.4-2.25 for package: glibc-dummy-centos-4

--> Finished Dependency Resolution

Error: Missing Dependency: glibc-common = 2.3.4-2.25 is needed by package glibc-dummy-centos-4

To fix this error, the the following commands:

yum remove glibc-dummy-centos-4

yum install gcc & yum install gcc*

yum update