Infiniband cluster Part 1
Overview and installing the operating system Intro: To facilitate testing of our software and so that support can model possible customer environments I was tasked with setting up a cluster with...
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Configuring the Network Intro: Welcome to part 2 of the series. We will cover sett ing up 3 vlans for the tcp/ip network and then we will ensure all the packages for infiniband are installed. TCP/IP I...
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Useful Scripts Intro: This section contains the scripts I use to quickly redeploy the nodes. The “Post Script” could be improved a lot and also made more generic, however I’ll leave that as a task to...
View ArticleCPUInfo
Small shell script that returns the details in /proc/cpuinfo in a more human readable and relevant way. Sample output
View ArticleDeploy Centos 6 from VMWare Template
This is just a quick gotcha that I found ages ago then forgot about and then had to figure out again. Before you convert the VM to a template. rm /etc/udev/rules.d/70-persistent-net.rules sed -i...
View ArticlePuppeteering with Puppet
So I’ve been a very naughty sysadmin recently, one of the things I intended to do early on in my new employment was setup some form of System Management as we have several Linux hosts. However truth be...
View ArticleUpdate sshd_config to use Protocol 2
Had to write an script to update SSHD to only use protocol 2 without changing any of the other settings, to be deployed via BMC Bladelogic (horrible horrible tool), but you work with what you have. The...
View ArticleVMWare Integrated Openstack issues
Standing up the environment with the integrated Database is easy enough however if you want to add Active Directory into the mix it gets more fun. During this I encountered the following issues: No way...
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