Here I will share a few useful Linux commands I have been using to troubleshoot various server problems. Logging is extremely useful especially when an issue happens at random times or you are not able to yet reproduce the problem. Going back over logs to when a problem was identified will provide you with information and insight into what caused the problem and the general state of the server during that time period, this is why I am covering how to perform logging with these useful commands. There are plenty of other useful commands that are useful for more specific troubleshooting, however I have found these ones the best overall for identifying issues.
Monthly Archives: December 2012
My top 3 Linux commands for logging problems
Posted by Jarrod Farncomb
on December 20, 2012
2 comments
How to Increase the size of a Linux LVM by adding a new disk
Posted by Jarrod Farncomb
on December 14, 2012
171 comments
This post will cover how to increase the disk space for a VMware virtual machine running Linux that is using logical volume manager (LVM). Firstly we will add a new disk to the virtual machine and then extend the original LVM over this additional space. Basically we will have two physical disks but just one volume group and one logical group that is using the space on both disks together. With this method there is no down time for the virtual machine.
Use GParted to increase disk size of a Linux native partition
Posted by Jarrod Farncomb
on December 13, 2012
115 comments
In this post we will cover how to increase disk space for a VMware virtual machine that is using a Linux native partition rather than logical volume manager (LVM). Firstly we will increase the size of the virtual disk on the virtual machine at the hardware level and then once this is complete we will boot into a GParted live CD and perform the changes required to make use of the additional disk space so that the operating system is able to use it.
How to Increase the size of a Linux LVM by expanding the virtual machine disk
Posted by Jarrod Farncomb
on December 12, 2012
300 comments
This post will cover how to increase the disk space for a VMware virtual machine running Linux that is using logical volume manager (LVM). Firstly we will be increasing the size of the actual disk on the VMware virtual machine, so at the hardware level – this is the VM’s .vmdk file. Once this is complete we will get into the virtual machine and make the necessary changes through the operating system in order to take advantage of the additional space that has been provided by the hard drive being extended. This will involve creating a new partition with the new space, expanding the volume group and logical group, then finally resizing the file system. Read more »
Increasing disk space in Windows Server 2008
Posted by Jarrod Farncomb
on December 11, 2012
4 comments
This post will cover how to increase the disk space for a VMware virtual machine running Windows Server 2008. Firstly we will be increasing the size of the actual disk on the virtual machine, so at the hardware level – the VM’s .vmdk file. Once this is complete we will get into the virtual machine and make the necessary changes through the operating system GUI in order to take advantage of the additional space that has been provided by the hard disk being extended. The server can stay online while disk space is upgraded with this method which is ideal for most production servers – no rebooting is needed!
Overview of Ruxcon 2012
Posted by Jarrod Farncomb
on December 10, 2012
No comments
I attended the Ruxcon 2012 computer security conference this year and thought I’d post an overview of the event. I’ll cover the awesome presentations that I saw as well as the capture the flag hacking game. I have now attended Ruxcon for the past 3 years and can definitely say that it only keeps getting better, this year was by far the best thus far and I can’t wait to go again in 2013. If you are at all interested in security and are in Australia I highly recommend going.