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If you are a linux system administrator one of the more important things to learn and to know is how to manage users and groups on linux systems. This guide will describe how to add, delete and modify users and groups (manage users and groups) on CentOS 6 linux (same applies to other linux distributions) […]
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Kickstart file is a great solution which enables you to automate installation of CentOS Linux, Red Hat Enterprise Linux and other Red Hat Linux derivates. Kickstart file is basically a single file containing answers to all the questions that you would normally be asked during a typical installation of your Linux system. Kickstart file can […]
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Yum or Yellowdog Updater Modified is a command line package management solution for Linux systems using RPM‘s like Red Hat Enterprise Linux, CentOS Linux, Fedora,… We can use yum to search, install, remove and check for additional information about RPM packages available to our Linux system. Yum works with local or remote repositories which are […]
Are you getting “Pnp4Nagios XML file not found Error”? Read this post and fix this error. Learn how to get Pnp4Nagios performance data graphs working.
Learn how to write Nagios Plugin Bash Script with correct responses and exit codes for Nagios Server to understand.
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Learn how to reset file permissions and ownership on CentOS 6 to default, as it is when software RPM package is freshly installed.
Learn how to resize (extend and reduce) non-LVM partition and filesystem on CentOS 6 Linux with fdisk and resize2fs without loosing your data.
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Learn how to use IP aliasing on CentOS 6. IP alias / IP aliasing is assigning multiple IP addresses to a single physical network interface.
Got “NRPE: Unable to read output” error in Nagios and do not know what exactly it means and how to fix it? Read this post and learn how to fix it!
Nagios Is The Industry Standard In IT Infrastructure Monitoring. Learn how to convert Nagios Log Unix Timestamp to human friendly and readable format.
Learn how to create MySQL database, MySQL user and grant priviliges on a database to desired user. Download GeekPeek.Net automated bash script!
Got “This account is currently not available” error when trying to login via SSH? Read here what it means and how to quickly fix it!
