Background
It is always a good idea to monitor the server hardware, in many cases the root cause of the probblem is hardware related like: a fan stops and the temperature gets to high, dust in the machine makes it to hot, disks that fails, memory corruption and so on. This article will describe howto enable [...]
I have noticed the last 2 days that I did not receive as many mails as I usually do. The whole family has been ill the last couple of days so I did not spend any time troubleshoot that.
But today I noticed that I’ve only got 1 mail so something must be wrong. I did [...]
This guide describe howto install and do a basic configure of SNMP on a RedHat Enterprise Linux or CentOS. Probably it will work on many other *nix systems.
1. Installation
Run command yum install net-snmp-utils
[root@dull etc]# yum install net-snmp-utils
Loading "fastestmirror" plugin
Loading "dellsysidplugin" plugin
…
…
Dependencies Resolved
=============================================================================
Package [...]
When I updated my CentOS system and could not mount XFS file system and my op5 Monitor did not react. I even run check_disk on these mount points but op5 Monitor did not tell me that anything was wrong. So when I managed to get the system to boot and my monitoring system tell me [...]
Yesterday new CentOS kernels was released and could be updated with yum update. I did that on 3 systems and none of them worked afterwards.
The first system is the machine that runs this blog. It runs Xen kernel with two virtual system.Luckily the webserver and database runs in Dom0. After update the system did not [...]
