Author Archives: Marcel Stangenberger

Finding the host that locks the VM

We’ve been experiencing some issues with file locks lately caused by VMotions gone wrong and VM’s that where somehow deleted while still running (?). So here is a little manual on how to troubleshoot this. First off, enable SSH on a host within the cluster. It doesn’t matter which one, but if you have a… Read More »

Playing with puppet(s)

I’ve been playing around with the Open Source release of puppet. What a great tool this is. Centralizing all configurations is one thing, but beeing able to push them directly to your clients and keeping them consistent with very little effort is a great boost in efficiency. Currently i’m managing all my CentOS (6 &… Read More »

Writing custom SATP claimrules

I’ve been using HP 3PAR systems for a couple of years now and the documentation is quite extensive. So for creating your own custom SATP claimrule HP/3PAR created a very simple one-liner that will automatically ensure that all your LUN’s are configured correctly. Now since a few day’s we’ve also acquired an HP EVA P6550… Read More »

Windows 2012(R2) MPIO

MPIO in Windows works a bit different then i’m used to on VMware. Where VMware almost always detects this out of the box, Windows does not detect this so you need to help it out a bit. Installing MPIO 1. On the server, log in as Domain Administrator. 2. Launch “Server Manager“. 3. On “Server… Read More »

Two Device ID’s on a RDM

I’ve been working on migration our current VMWare hosts to a new install that i’ve designed with optimised storage configuration and memory sharing as so to optimise the customer customer experience. While migrating VM’s from the last five hosts i’ve started running into issues with some VM’s that have RDMs attached. These RDMs won’t migrate… Read More »

Nagios check for Brocade FC switches

On Nagios Exchange i found a snmp based check for Brocade FC switches, however with the most current firmwares it seems broken. I could offcourse have spend some time in fixing that, but i found it more convenient to create a small shell script to check the switch. You’ll need sshpass installed on your server… Read More »