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
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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 by hand and with the help of some PowerShell scripts I have created for you.
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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 as folders. Even with some other great resources out there that discuss this topic, a lack of education remains on how resource pools work, and what they do. In this post, I’ll give you my spin on some of the ideals behind a resource pool, and then discuss ways to properly balance resource pools by hand and with the help of some PowerShell scripts I have created for you.
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Graylog2 Cisco ASA / Cisco Catalyst

In order to correctly log Cisco device in Graylog2 setup the below configuration.
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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 viable option for what I required.

After a little searching I came across Graylog2 which is an open source alternative to Splunk and is totally free! You only need to pay if you would like support from them.
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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 3 Server on CentOS 6.x using a MySQL Database!
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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 months.

One issue that we have hit a few times was the vCD cell stopped working properly (Multi-cell environment). I could log into the vCD provider and organization portals but the deployment of vApps would run for an abnormally long time and then fail after 20 minutes.
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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 others can connect to it over the network. When setting up mounts, NFS is most effective for permanent fixtures that should always be accessible. Continue Reading

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 which virtual machines had snapshots present, when they were created and how big they are.
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CentOS Server Hardening Tips

This article provides various hardening tips for your Linux server.
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