When automating server provisioning you might be considering implementing Nagios for monitoring servers and services as part of the build process. Apart from the help section of Nagios console giving some hints on how to interact with the API, there isn’t much else to go on so I’m sharing my learnings on how to do… Read more »
How to set up a email server using Postfix, Dovecot and Roundcube on Linux Debian
Domain and Records Before you start anything, you need a domain. If you don’t have one, purchase one. Because it takes time to replicate the records, you need to start this processes first. You will need to create A records for the domain, I created the following: @ www mail smtp imap webmail I have… Read more »
Automatically Reboot VMware ESX Host after Purple Screen of Death (PSOD)
The default and recommended setting is to leave the purple screen of death up to help you notice that the host has died and also leave the PSOD up to help troubleshoot the issue because on reboot you can loose your logs. 1. Shell (SSH) into the physical host or access the host directly… Read more »
VMWare ESX 5.x Host Commands
You don’t need to manage VM guests using just the vSphere fat client or vSphere Web Client, you can manage VM’s from the host command line (CLI). This is a short brief list of some of the more common commands to use, there are however a lot more that I am not going to spend… Read more »
VMware Anti Affinity Rules in VMware ESX
I recently had to setup anti affinity to separate two guest operating systems that were clustered using Microsoft Cluster. This ensured that each guest would not be on the same host, reducing the risk of hardware failure bringing down both hosts and the cluster. Other examples might be that you want your primary and secondary… Read more »
