Package version list CentOS

Have you ever needed to share a package list?




rpm -qa --qf '%{NAME} %{VERSION}-%{RELEASE} %{ARCH}\n' > pkglist.txt





Ref: http://beginlinux.com/server/centos/basic-centos-6-install

Vagrant couldn't determine the SSh port for you VM!

Saw the following message on vagrant up and vagrant ssh:

"[mongrel@localhost massiveapp]$ vagrant ssh
Vagrant couldn't determine the SSH port for your VM! This is a rare,
exceptional event, and a bug should be filed. Please try recreating your
VM (vagrant destroy, then vagrant up). Sorry!"

Resolved by changing the vm.name.

Ref: https://github.com/mitchellh/vagrant/issues/671

Install Ruby 1.9 on CentOS

In case you did not know and because I found out the hard way;

Attention: Ruby 1.9.2 now includes RubyGems so there's no need to install it separately. As a matter of fact, if you try doing so you will get an error like:

rubygems-1.3.7/lib/rubygems/source_index.rb:68:in `installed_spec_directories': undefined method `path' for Gem:Module (NoMethodError

Ref: http://www.freshblurbs.com/install-ruby-1-9-centos

masterful scrummaster

Good read ...

http://www.scrumshortcuts.com/blog/scrum-roles/masterful-scrummaster/

DevOps

“DevOps”. This word was coined by Patrick Debois to describe “an emerging set of principles, methods and practices for communication, collaboration and integration between software development (application/ software engineering) and IT operations (systems administration/infrastruc- ture) professionals.”1. In other words, software systems tend to run more smoothly when the people who are writing the code and the people who are running the servers are all working together.
Ref: Deploying Rails Automate, Deploy, Scale, Maintain, and Sleep at Night, Anthony Burns Tom Copeland