Both Windows and Linux operating systems are capable of acting as an NFS (Network File System) server, but which performs better? Here we are going to run various benchmarks on the two to see which performs better.
NFS has been around for a long time in UNIX based variants, and more recently Microsoft has added support within the Windows operating system, let’s find out how they compare.
Recently I’ve been creating Icinga (a port of Nagios) health checks for various ZFS pools running on Solaris 11.2 storage servers, I found this great plugin however found it only alerted based on space remaining within the zpool, which while useful was not enough. I was not able to find a good check that would create an alert if any of the READ, WRITE or CKSUM values in ‘zpool status’ changed from zero to anything else, indicating a problem, so wrote my own health check.
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If you have a Solaris server that does not have direct access to the Internet and cannot perform an update, what can you do? Configure a proxy server that has Internet access of course! Here is how it’s done.
In this example we will be using the popular Squid Proxy. While this can also act as a cache we are only concerned with its proxy functionality here. We will also be configuring the Solaris publisher to make use of a proxy server so that updates are downloaded through the proxy.
A Citrix XenServer dom0 currently runs with a 4GB root partition which is pretty small by today’s standards. A small amount of usable storage space can be quite easy to quickly fill. It is therefore important that dom0 has free space in order for it to operate correctly. Here we will cover some different methods that can be used to free up disk space within XenServer.
After rebooting a virtual machine running CentOS through Apache CloudStack it appeared to be running, however it failed to boot up. The status through CloudStack showed the virtual machine as running, however the console did not load any content and connections to it failed. After checking the virtual machine directly through XenCenter it was clear that it was not actually running.
In XenCenter the virtual machine had the red stop icon on it and was definitely stopped. Performing a reboot through CloudStack did nothing, and stopping the instance through CloudStack resulted in the virtual machine being removed from XenCenter as expected. When starting it back up again and watching XenCenter it did appear to power on for a couple of seconds as shown with the green play icon however it quickly went back to the stopped state.
For some time now I have wanted to move this website over to a newer server in order to improve overall website load times around the world. First I’ll cover the old server, what I was looking for and how I decided on a provider.
Recently I had a whole lot of problems migrating virtual machines running on XenServer 6.2 and 6.0.2. Sometimes the migration would fail and the virtual machine would stop or pause resulting in down time, here is how the problem was investigated and fixed.
Here we show you how to expand an LVM volume or partition in Linux by first resizing logical volume followed by resizing the file system to take advantage of the additional space.
See here if you’re instead trying to do the opposite and shrink an LVM volume.
Here we show you how to shrink an LVM volume or partition in Linux by first resizing the file system followed by resizing the logical volume.
See here if you’re instead trying to do the opposite and expand an LVM volume.
Debian 8 Jessie was released as the latest stable version of the Linux Debian operating system today. While you can install Debian 8 Jessie fresh, you can also upgrade from Debian 7 Wheezy quite easily, which is what we will cover here.