Sorry, but Nagios is currently not checking for external commands, so your command will not be committed! This message comes on nagios dashboard when externals commands are disable. To enable external commands.Edit the nagios.cfg file and enable the value of check_external_commands parameter. Change the value from 0 to 1 In Debian or Ubuntu: vi /etc/nagios3/nagios.cfg […]
Linux
How to install nagios server in Ubuntu 12.04 LTS
How to install nagios server in Ubuntu 12.04 LTS In this tutorial we will learn how to install server in Ubuntu 12.04 LTS. Nagios is one the robust and very good monitoring server which is highly used in corporate network either it is Small business Unit or big corporate. It also comes with Open source […]
SSH WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED
When you try to ssh the another remote Linux/Unix machine , you might have encountered with the WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED! . This message we have often seen when we work in Linux machines. In this post we have provided the Reason and Solution on this Warning. root@tuxworld:/tmp# ssh 10.10.0.16 @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ @ WARNING: […]
How To Get SSH Public Key Fingerprint Information
Long time ago one of my U.S system admin was very security conscious. He asked me to create id_rsa.pub key in server. I created the key with ssh-keygen -t rsa command. And send it him through encrypted email. Next day he wrote me ,what is the ssh key fingerprint ? First let’s have some introduction. […]
Useful 3 Pastebin links which I mostly use
Useful 3 Pastebin links which I mostly use This time I would like to share some information about pastebin which I use.Just take a very good definition from wikipedia : “A pastebin is a type of web application where anyone can store text for a certain period of time. This type of website is mainly […]
How to set JAVA environment variables in Linux
Introduction When you work on Java or any Java based project , you might need to set JAVA environment variables JAVA_HOME and PATH in Linux. After installing new java (jdk or jre) or latest Java you may have usually find that the version of java is not exactly the same which you have installed. It […]
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