Ramblings of a Sysadmin

Random stories about life, problems and technology all within the world of IT.

Ramblings of a Sysadmin
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vcentre

Restoring VCentre from a file based backup

Restoring VCentre from a VCentre backup due to cat induced corruption..... Yup, that's a thing that happened!

Gary Williams Gary Williams
vcentre

Recovering a corrupt 6.7 VCentre after a storage outage

A power outage on my NAS corrupted VCentre, this is how I recovered it.

Gary Williams Gary Williams
Vmware

ESXi capacity reports

A couple months ago I had a need to generate a quick report on the status of ESXi, the reported needed to include CPU usage, RAM and a few other things and while

Gary Williams Gary Williams
Vmware

Two VM Escape flaws found in VMWare VMXNet3 Adapters

Two VM Escape flaws found in VMWare VMXNet3 Adapters

Gary Williams Gary Williams
Vmware

Upgrading to VCentre 6.7

Upgrading VCentre 6.5 to 6.7 - one small networking gotcha caught me out for a few hours, don't let it catch you out.

Gary Williams Gary Williams
Vmware

VMWare and VCentre compatibility matrix

A quick compatibility guide to which versions of ESXi work with which versions of VCentre

Gary Williams Gary Williams
Hypervisor

Disaster recovery and why Hypervisor HA may not be best

One of the things I always caution against is relying on hypervisor HA, all too often it won't give you the results that you expect, have a read of my blog over on

Gary Williams Gary Williams
Vmware

Tracking down the cause of high VMWare network traffic using pktcap-uw

The other day we started to see an odd issue on a VMWare host. We have a lot of monitoring in place so the issue was picked up pretty quickly. This is the

Gary Williams Gary Williams
Vmware

VMware’s Photon and containers in VMware

I've been exploring VMWare's photon and containers in VMware via Photon. From my experiences, Photon works incredibly well and is faster than other distros in VMware. I've written more about it here

Gary Williams Gary Williams
Vmware

Avoiding a gitlab style outage with Blue/Green deployments

As most of you are probably aware, Gitlab is, in part, a source code hosting repository which suffered something of a major outage just a few weeks ago. Unusually, they posted a very

Gary Williams Gary Williams
Microsoft

NTP in a virtualised world

Let me start this off by saying that I love NTP. The whole way the protocol has been designed is truly elegant and it is such an important protocol that is often neglected

Gary Williams Gary Williams
Troubleshooting

My thoughts on handling a system outage

If its going to happen then it'll happen at the worst possible time. It'll happen that friday evening just before going home/beer o'clock and it'll be a long weekend plus whatever system

Gary Williams Gary Williams
Vmware

VMWare VCenter 5.1 SSO - The worst installer out there?

I've spent the past few days attempting to install VMWare's VCenter 5.1 but the installer has other ideas, I first tried the install from build 947939 and each time I am hitting

Gary Williams Gary Williams
Technical

VMWare offer free P2V conversion tool

I have a windows 2000 domain controller that I want to clone and put into my test network so I can rehearse an upgrade from Exchange 2000 to Exchange 2007 and to test

Gary Williams Gary Williams
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