technomenace.com

CPanel FileManager shows “No records found”

admin — Sat, 04 Sep 2010 08:09:48 +0000

If you see the below error in FileManager of CPanel:

No records found.

It can take a lot of time to debug. The fix is simple:

# chmod 755 /usr/local/apache

How to configure Subversion + Apache [mod_dav_svn.so] in CPanel

admin — Mon, 30 Aug 2010 10:46:18 +0000

It is very easy to setup a subversion repository and access it via browser as I found out recently from my own experience.

The below case was on a Cpanel server, but you can follow the same method (with some tweaks, of course) on any subversion + apache environment as long as you have . . . → Read More: How to configure Subversion + Apache [mod_dav_svn.so] in CPanel

Download youtube videos using Firefox for free!!

admin — Wed, 16 Jun 2010 10:49:40 +0000

I know a lot of people who search for online and offline tools (applications) to download youtube videos. My favourite app still remains the “youtube-dl” command but its even easier to save the videos from Firefox. While its basic knowledge that a browser uses its cache to store temporary data, we seldom make use . . . → Read More: Download youtube videos using Firefox for free!!

Scheduling Transmission via crontab

admin — Mon, 14 Jun 2010 15:08:34 +0000

I am on a 1Mbps BSNL broadband connection that gives unlimited free downloading from midnight 2AM to morning 8AM which I must confess I haven’t been utilizing till now. Sitting bored at home, I now need to download some movies (torrent, of course!) during these hours, thus making sure that I do it without . . . → Read More: Scheduling Transmission via crontab

Script to generate bind zone file

admin — Tue, 13 Apr 2010 15:23:56 +0000

I have written up a small perl script which can be used to generate a zone file for your domain. This is useful if you have no control panel on your server and wish to create valid zone files easily. By default, the zone file is printed into the screen (which you can easily . . . → Read More: Script to generate bind zone file

High I/O Wait? Don’t always blame it on the hard drive

admin — Sun, 11 Apr 2010 08:06:41 +0000

Recently my friend was complaining about his new OpenVZ main node server taking a lot of i/o resources even though no VPS were running on it. He was blaming it on the datacenter guys for giving him faulty hard disk and wanted me to check and confirm. With iostat and lsof commands, it didn’t . . . → Read More: High I/O Wait? Don’t always blame it on the hard drive

Implement bonding in RHEL 5

admin — Wed, 24 Jun 2009 04:53:51 +0000

Bonding is the process of combining 2 NICs on a system into a single device. For e.g., if you have 2 network cards on a machine, eth0 and eth1, you combine the same into a bond device, bond0 and then configure an IP for this bond device.

Why do we have to do that, . . . → Read More: Implement bonding in RHEL 5

How to disable IPv6

admin — Fri, 29 May 2009 10:20:22 +0000

Both Red Hat Enterprise Linux 4 and 5 enable Internet Protocol Version 6 (IPv6) by default. Some users do not find it worth using, if that’s the case with you then you can always disable the same.

How to disable: ====================== To disable IPv6 support in RHEL 4, remove the following line, if it . . . → Read More: How to disable IPv6

DNS Terms you need to know

admin — Sat, 23 May 2009 20:13:11 +0000

During my beginning years of System Administration, I was pretty much confused by the terms ‘primary nameserver’, ‘secondary nameserver’, ‘master/slave nameserver’ etc. Different websites have different views on these terms. I am sure many system admins (even experienced ones) have got their ideas wrong about these terms.

My confusion ended the day I stumbled . . . → Read More: DNS Terms you need to know

Chkrootkit Installation Guide

admin — Sat, 23 May 2009 20:03:59 +0000

chkrootkit (Check Rootkit) is a common Unix based program intented to help system administrators check their system for known rootkits. It is basically a shell script using common UNIX/Linux tools like strings and grep commands to check core system programs for signatures. If you doubt that your server has been hacked, chkrootkit is what . . . → Read More: Chkrootkit Installation Guide