April 2010 Archives

Chef Client Installation On CentOS 5.4

| No TrackBacks

Set up some variables we'll use throughout the install

BASEARCH=$(uname -i)

We need a newer version of Ruby than provided by CentOS/RHEL. Add appropriate repositories and install the packages.

rpm -Uvh http://download.fedora.redhat.com/pub/epel/5/$BASEARCH/epel-release-5-3.noarch.rpm
rpm -Uvh http://download.elff.bravenet.com/5/$BASEARCH/elff-release-5-3.noarch.rpm
yum install -y ruby ruby-shadow ruby-ri ruby-rdoc gcc gcc-c++ ruby-devel

With that complete, we want to install RubyGems from source as it's cross-platform and we know what to expect.

cd /tmp
wget http://rubyforge.org/frs/download.php/69365/rubygems-1.3.6.tgz
tar zxf rubygems-1.3.6.tgz
cd rubygems-1.3.6
ruby setup.rb
ln -sfv /usr/bin/gem1.8 /usr/bin/gem  # We may need this symlink if /usr/bin/gem doesn't exist

Make sure the rubygems EXECUTABLE_DIRECTORY is in our PATH

# gem env && echo -e "\nPath: $PATH"
RubyGems Environment:
  - RUBY VERSION: 1.8.7 (2010-01-10 patchlevel 249) [i686-linux]
  - INSTALLATION DIRECTORY: /usr/lib/ruby/gems/1.8
  - RUBY EXECUTABLE: /usr/bin/ruby18
    - ruby
    - x86-linux
     - /usr/lib/ruby/gems/1.8
     - /home/ymek/.gem/ruby/1.8
     - :update_sources => true
     - :verbose => true
     - :benchmark => false
     - :backtrace => false
     - :bulk_threshold => 1000
     - http://rubygems.org/
Path: /usr/local/bin:/usr/bin:/bin:/opt/bin:/usr/i686-pc-linux-gnu/gcc-bin/4.3.4:/usr/games/bin:/home/ymek/development/sdks/flex_3.2/bin

Create some config files to get chef-solo up and running

# cat /root/solo.rb
file_cache_path "/tmp/chef-solo"
cookbook_path "/tmp/chef-solo/cookbooks"
recipe_url "http://s3.amazonaws.com/chef-solo/bootstrap-latest.tar.gz"
# cat /root/chef.json
    "bootstrap": {
        "chef": {
            "url_type": "http",
	    "init_style": "init",
	    "path": "/opt/lib/chef",
	    "serve_path": "/opt/lib/chef",
            "server_fqdn": "chef.server.com"  # need a fqdn
    "run_list": [ "recipe[bootstrap::client]" ]

Add the Opscode gem source

gem sources -a http://gems.opscode.com

Install the chef gem. This will also pull in some dependencies.

gem install chef

Bootstrap the client using Opscode's recipe.

# /usr/bin/chef-solo -c /root/solo.rb -j /root/chef.json

Copy your server's validation.pem to /etc/chef/ on the client. It's located in /etc/chef/validation.pem by default. We also need to copy the init scripts over.

cp /usr/lib64/ruby/gems/1.8/gems/chef-0.8.10/distro/redhat/etc/init.d/chef-client /etc/init.d/

EDIT: The 0.8.10 release has an incorrect path for the chef-client pid file. Let's fix that.

/bin/sed -i '/\/var\/run\/chef\/client\.pid/\/var\/run\/chef\/chef-client\.pid/' /etc/init.d/chef-client

Make the script executable and add it to the runtime services.

chmod +x /etc/init.d/chef-client
chkconfig -a chef-client
chkconfig chef-client on

The client will request validation from the server upon first run. This will generate a client-specific key and save it to /etc/chef/client.pem. After this happens, delete /etc/chef/validation.pem from the client machine

About this Archive

This page is an archive of entries from April 2010 listed from newest to oldest.

March 2010 is the previous archive.

Find recent content on the main index or look in the archives to find all content.