Extend the size of ext3 partition online in a virtual machine

June 10, 2011
By admin
Extend the size of ext3 partition online in a virtual machine

I just configured a virtual machine with Redhat Entrprise Linux 5.5 as a guest operating system. The / partition of this machine was assigned a virtual disk of size 60GB. I installed all the required software and later came to know that 60GB was not sufficient so needed to extend this partition to 100GB.

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Syslog-ng logging IP Address instead of Hostname

May 30, 2011
By admin

I have setup the syslog-ng server to accept log messages from remote host through syslogd in Linux and Snare in Windows platform. After successfully implementing this, I started to configure hosts to send the log messages to the central syslog-ng server. During this, it was found that the remote servers were able to send...

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How to install PHP-Json module on a Linux server?

May 26, 2011
By admin

 To install/enable Json support for PHP on a Linux  server, follow the below steps: 1. Install php-pear and gcc # yum install php-pear gcc 2. Install json module # pecl install json

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Detecting rootkits under Linux

March 30, 2011
By admin

You can try the following tools to detect Linux rootkits: Zeppoo Software Zeppoo – Zeppoo allows you to detect rootkits on i386 and x86_64 architecture under Linux, by using /dev/kmem and /dev/mem. Moreover it can also detect hidden tasks, connections, corrupted symbols, system calls and so many other things.

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Extending Logical Volume

March 10, 2011
By admin
Extending Logical Volume

To extend a logical volume you simply tell the lvextend command how much you want to increase the size. You can specify how much to grow the volume, or how large you want it to grow to:

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Setting up public key authentication over SSH

March 5, 2011
By admin

Generate key on local machine ssh-keygen -t rsa It will ask you for a password but you can leave it blank. Note you could also pick -t dsa if you prefer. Ensure that the remote server has a .ssh directory

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