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Linux df Command Usage Examples 18 Oct 2012 | 12:55 am
This post about Linux df command opens series of articles for Linux newbies where you’ll find description and usage examples of major Linux commands like df, top, fsck, mount and so on. Introduction L...
Linux Restricted Shells: rssh and scponly 6 Jul 2012 | 12:33 am
Restricted shells like rssh and scponly give sysadmin the possibility to limit the operations that Linux user can do, for example you can create user that will be allowed to copy files via scp but won...
Failover and Load Balancing using HAProxy 5 Jul 2012 | 04:34 am
HAProxy is open source proxy that can be used to enable high availability and load balancing for web applications. It was designed especially for high load projects so it is very fast and predictable,...
Track file changes using auditd 5 Jul 2012 | 03:08 am
Most of Linux distributions comes with Linux Auditing System that makes it possible to track file changes, file accesses as well as system calls. It’s pretty useful functionality for sysadmins who wis...
Limit CPU usage of Linux process 3 Jul 2012 | 09:32 pm
cpulimit is a small program written in C that allows to limit CPU usage by Linux process. Limit is specified in percentage so it’s possible to prevent high CPU load generated by scripts, programs or p...
Geolocation for Nagios 2 Jul 2012 | 07:50 pm
Some time ago I came across NagMap addon for Nagios and found it pretty helpful for monitoring multiple hosts around the world. For example, there are some production servers in Europe, US and others...
Top 5 Password Managers for Linux [Guest Post] 16 May 2012 | 07:33 pm
In this post you will find set of password managers for Linux which provides secure storage for your passwords for sensitive data. If you still keep the passwords in plain text then you must consider ...
Grub Fallback: Boot good kernel if new one crashes 25 Apr 2012 | 07:51 am
It’s hard to believe but I didn’t know about Grub fallback feature. So every time when I needed to reboot remote server into a new kernel I had to test it on local server to make sure it won’t panic o...
Why Mosh is better than SSH? 12 Apr 2012 | 08:17 am
Mosh (stands for Mobile Shell) is replacement of SSH for remote connections to Unix/Linux systems. It brings a few noticeable advantages over well known SSH connections. In brief, it’s faster and more...
Add physical NIC to XenServer 10 Apr 2012 | 01:12 am
If you add new physical network interface to the hardware that runs XenServer it won’t appear in XenCenter by default. In order to attach it to VMs or change its settings you’ll need to type in a few...
