Recently I faced problems setting up check_rbl v1.3.0 plugin at my nagios 3.4.1. From the gui the state of the check would turn to UNKNOWN and the Status Information would return “No output returned from plugin”
Category Archives: linux
Nagios – check_rbl – No output returned from plugin
Posted by akamaras
on 27/08/2013
4 comments
Linux script to check if your hard disk is nearly full
Posted by akamaras
on 06/02/2012
6 comments
Here is a simple script that will check if your specified partition is almost full and will notify you if it is. In order to have an email send, you must have mailx installed, for installation check my post here.
Linux server info script
Posted by akamaras
on 28/11/2011
64 comments
Here is a script that will quickly provide you information about your linux server such as cpu model, frequency, number of cores, amount of ram & swap, system uptime and test server download & I/O speed
cpu, ram and system uptime info are taken from “/proc/cpuinfo” , “free” and “uptime” respectively
download speed is measured by downloading a test file from cachefly, while I/O speed is measured by creating a 1GB file from null characters (/dev/zero)
linux script to check if a service is running and start it, if it’s stopped
Posted by akamaras
on 09/11/2011
103 comments
Here is a simple script that will check if your specified service is running and will start it if it’s stopped.
You will have to replace “replace_me_with_a_valid_service” with the name of the service you want to check
debian 5 lenny openvz template with wrong /etc/apt/sources.list
Posted by akamaras
on 22/09/2011
No comments
I was getting 404 Not found errors using my new openvz with debian lenny
elephant:~# apt-get update Hit http://ftp.debian.org lenny Release.gpg Ign http://ftp.debian.org lenny/volatile Release.gpg Ign http://ftp.debian.org lenny/updates Release.gpg Hit http://ftp.debian.org lenny Release Ign http://ftp.debian.org lenny/volatile Release Ign http://ftp.debian.org lenny/updates Release Ign http://ftp.debian.org lenny/main Packages/DiffIndex Ign http://ftp.debian.org lenny/contrib Packages/DiffIndex Ign http://ftp.debian.org lenny/non-free Packages/DiffIndex
howto setup lnmp on centOS
Posted by akamaras
on 03/07/2011
No comments
lnmp is an alternative setup to lamp. The difference between lamp & lnmp is the web server, lamp uses apache whereas lnmp uses nginx. lnmp stands for
Network error: could not connect to server: ip:5925
Posted by akamaras
on 20/06/2011
No comments
I was getting the above error message whenever I was trying to get console access to my kvm vps from vnc either from the java client from solusvm or vnc client from my pc.
when you turn on or off vnc in solusvm, a notification appears saying : “you need to reboot the virtual server for the changes to take affect”.
stress test your web server with httperf
Posted by akamaras
on 19/06/2011
2 comments
Httperf is a tool for measuring web server performance. It provides a flexible facility for generating various HTTP workloads and for measuring server performance.
NOTE : for accurate results, it’s best to run httperf from a remote machine and not from the localhost
to install httperf in red-hat based distributions (additional repo are needed. For centos you’ll need rpmforge, see here for installation)
yum install httperf
in debian based
apt-get install httperf
or install from source, here is the download page
CentOS 5.6
Posted by akamaras
on 11/04/2011
No comments
CentOS 5.6 released today. Some of it’s features :
- ext4 is now a fully supported file system
- Many packages updated to newer versions
- New packages that were not present in 5.5
- New repositories
- php53 is available as a php replacement Read more »
installing suphp on virtualmin
Posted by akamaras
on 28/03/2011
5 comments
One thing I don’t like about virtualmin is the absence of suphp. After a few modifications, I managed to integrade it and make it the default php handler for new virtual hosts. This howto is based on centOS 5.5 32bit and virtualmin 3.83 gpl, you may have to change some things if you’re on another linux distribution such as paths or update manager commands, but the procedure will be more or less the same. Read more »
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