How to install OpenStack on Fedora VM

OpenStack requires a system that has the virtualisation feature, but you might want to test it on the virtual guest before actually install it in bare metal system. In that case, you can achieve it by enabling nested virtualisation feature in recent Linux distribution. You can find if your distro has that feature by checking… Continue reading How to install OpenStack on Fedora VM

packages you need to install for cinder virtualenv test

cinder documentation says you need to install below packages in Fedora/RHEL, but it's not working as some packages are missing. $ sudo yum install python-devel openssl-devel python-pip git libmysqlclient-dev libqp-dev I had to test one by one and below seems working perfectly. $ sudo yum install python-devel openssl-devel python-pip git mysql-devel libpqxx-devel

vmware-tools installation failure in Fedora 18?

If you are failing installing vmware-tools in Fedora 18 with the following message, it might be caused of the changes in Fedora 18 kernel-revel package. The path "" is not a valid path to the .... Here's the simple command that will resolve the issue. It also works for latest Fedora 17 issue. $ cp… Continue reading vmware-tools installation failure in Fedora 18?

Use colours in your Mac terminal

To use colours in your Mac terminal, you just need to put below in your ~/.bash_profile export CLICOLOR=1 export LSCOLORS=ExFxBxDxCxegedabagacad export GREP_OPTIONS='--color=auto' alias ls='ls -GFh' For the vim, below would be work by put in ~/.vimrc set nocompatible " must be the first line set tabstop=4 shiftwidth=4 softtabstop=4 filetype on filetype indent on filetype plugin… Continue reading Use colours in your Mac terminal

Installing RHEV Hypervisor on VMWare Fusion

If you are interested in Red Hat Virtualization and couldn't afford to buy machines for the hypervisor, using VMWare would be one possible cheaper way to achieve it. By using nested virtualisation technology, you can easily build an environment. Only thing you need to before the installation is making some changes in the vmx file… Continue reading Installing RHEV Hypervisor on VMWare Fusion

Tracing a function with jprobes

One problem with kprobes is that you can't check validity of the arguments passed to the function you are monitoring. For that matter, jprobes comes in. It's basically make a wrapper for the existing function and will be called instead without make any changes to the existing function. jprobes is an extention to the kprobes… Continue reading Tracing a function with jprobes

Jump into vmcore analysis – Step 8

There's a time you want to check the local variables or other entries in the stack. Below is an example that was crashed in 'kmem_freepages' and needed to check why it's crashed whiling freeing it. PID: 26 TASK: ffff81027f9197a0 CPU: 0 COMMAND: "events/0" #0 [ffff81027f92fa90] crash_kexec at ffffffff800aaa0c #1 [ffff81027f92fb50] __die at ffffffff8006520f #2 [ffff81027f92fb90]… Continue reading Jump into vmcore analysis – Step 8