EZ Linux Admin

Getting a md5sum error when tranferring a cpanel account?

EZ linux — Wed, 03 Mar 2010 12:19:41 +0000

This usually means you need to upgrade Perl on the server. Here is a example of a md5sum error.

The remote server didn’t report a correct md5sum of the archive. Please ensure you selected the correct type of remote server.

To fix upgrade Perl as shown here:

http://www.ezlinuxadmin.com/2009/08/upgrading-perl-on-cpanel/

My new favorite rsync command

EZ linux — Wed, 03 Mar 2010 12:04:33 +0000

rsync -vae ssh 12.123.123.123:/home/dwhsbackup/daily/username/ /backup/cpbackup/daily2/username/ –bwlimit=10000 –exclude-from ‘/root/exclude.txt’

Calm down rsync if it overloads your IO memory or CPU

EZ linux — Wed, 03 Mar 2010 11:57:14 +0000

The trick is to limit I/O bandwidth for rsync.

The –bwlimit option limit I/O bandwidth. You need to set bandwidth using KBytes per second. For example, limit I/O bandwidth to 10000KB/s (9.7MB/s), enter:

rsync –delete –numeric-ids –relative –delete-excluded –bwlimit=10000 /path/to/source /path/to/dest/?

10 megs a second is plenty of speed and will keep the server running smoothly when your grabbing allot of files off of it.

rsync running slow?

EZ linux — Wed, 03 Mar 2010 05:31:19 +0000

Today I was transferring files through rsync it was taking forever, my guess was the new server or old server was out of memory so I killed some procs and even rebooting the server but still it was crawling. So I thought I would think out of the box and after a couple trial and errors I tried a nic reboot and wow it was super fast from there.

/etc/init.d/network restart

I’m still not sure how the nic got blogged up but this worked like charm.

All cpanel server should have the /var tmp folder symlinked to /tmp

EZ linux — Wed, 03 Mar 2010 03:51:35 +0000

Here is how, first remove the /var/tmp folder

rm -rf /var/tmp

Then add the symlink:

ln -s /tmp /var/tmp

Free /usr partition space by a symlink to domlogs

EZ linux — Thu, 11 Feb 2010 00:04:15 +0000

First move the domlogs folder to the backup partition:

mv /usr/local/apache/domlogs /backup

Then create a symbolic link to it:

ln -s /backup/domlogs /usr/local/apache/domlogs

Default MYSQL port

EZ linux — Tue, 09 Feb 2010 20:48:58 +0000

The default MYSQL port is:

3306

Path to PHP CLI in CPanel

EZ linux — Tue, 09 Feb 2010 20:33:06 +0000

PHP CLI is installed by default by CPanel and placed in:

/usr/local/bin

/usr/bin

Location of SSL certs and keys for CPanel and users

EZ linux — Tue, 09 Feb 2010 18:13:36 +0000

I was tracking down the location for each users SSL on a CPanel based server and wanted to post the locations here since they are a little off the beaten track. This is good to have around for when you want to clean out old certs and keys that are just jumbling your SSL trackers.

Here is the ssl key and certificate locations on a cpanel based server:

/usr/share/ssl/private
/usr/share/ssl/certs

If you still need to buy a SSL cert please consider the non-profit SSLCA

Who command

EZ linux — Fri, 05 Feb 2010 00:00:25 +0000

This command will show who is logged into your system.

who