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Offline Upgrade ESXi 5.5 to 6.0

This is a very short and sweet article documenting the offline upgrade process from 5.5 to 6.0 Download the ESXi 6.0 Offline Bundle from the VMware website. Upload the file to the local data...

VMware Distributed Switches (dvSwitch)

In this article I am going to take you through what a Distributed switch or dvSwitch is and how it is used, I will also talk about why backing them up is so important, then show you how to backup b...

Understanding Resource Pools in VMware

It is my experience that resource pools are nearly a four letter word in the virtualization world. Typically I see a look of fear or confusion when I bring up the topic, or I see people using them ...

Graylog2 Cisco ASA / Cisco Catalyst

In order to correctly log Cisco device in Graylog2 setup the below configuration. This has now been added to the Graylog Marketplace https://marketplace.graylog.org/ Cisco ASA Configuration: lo...

Graylog2 CentOS Installation

I recently required a syslog server that was easy to use with a web interface to monitor some customers firewalls. I had been looking at Splunk but due to the price of this product it was not a via...

Teamspeak 3 with MySQL on CentOS 6.x (3.0.11.1 Onwards)

By default Teamspeak 3 uses a SQLite database, most people tend to use this however for those of us that prefer MySQL there is a way to change it. Follow this small tutorial to create a Teamspeak ...

vCloud Director and vCenter Proxy Service Failure

Over the past couple of weeks I have spent some time working with VMware vCloud Director 5.1. I will also be producing multiple other guides for vCloud Director as I use it more over the coming mon...

How to setup an NFS mount on CentOS 6

About NFS (Network File System) Mounts NFS mounts allow sharing a directory between several servers. This has the advantage of saving disk space, as the directory is only kept on one server, and o...

Email Report Virtual Machine’s with Snapshots

I have recently had an issue with people leaving snapshots on VM’s for too long causing large snapshots and poor performance on Virtual Machines. I decided that I needed a way of reporting on whic...

CentOS Server Hardening Tips

This article provides various hardening tips for your Linux server. 1. Minimise Packages to Minimise Vulnerability Do you really want all sorts of services installed?. It’s recommended to avoid ...