OL65_upgrade.rb

#!/usr/bin/ruby


Script_Info = {
  'base repo location'		=> 'cobbler/ks_mirror/OL6.5-x86_64',
  'base repo title'		=> 'OL6.5',
  'updates repo location'	=> 'LocalRepo/ol-6.5-updates',
  'updates repo title'		=> 'OL6.5-updates',
  'repo file dir'		=> '/etc/yum.repos.d',
  'new version string'		=> 'Oracle Linux Server release 6.4',
  'old repo files'		=> ['OEL6.4.repo','OEL6.4-lb.repo'],
}



def delete_old_repos

  Script_Info['old repo files'].each do |repo_file|
    next unless File.exist?("/etc/yum.repos.d/#{repo_file}")
    File.delete("/etc/yum.repos.d/#{repo_file}")
  end

end #delete_old_repos

def get_cobbler_host

  return  File.open("/etc/yum.repos.d/#{Script_Info['old repo files'][0]}", "rb").read.match(/^baseurl\=http:\/\/(.*).athenahealth.com/)[1].to_s

end #get_cobbler_host

def write_base_repo_file

  repo_file = File.open("#{Script_Info['repo file dir']}/#{Script_Info['base repo title']}.repo", 'w+')
  repo_file.chmod(0644)
  repo_file.write( "[#{Script_Info['base repo title']}]
name=Local #{Script_Info['base repo title']}
baseurl=http://#{get_cobbler_host}.athenahealth.com/#{Script_Info['base repo location']}/Server
enabled=1
gpgcheck=1
metadata_expire=1m
priority=1

[#{Script_Info['base repo title']}-UEK3]
name=Local #{Script_Info['base repo title']} UEK3
baseurl=http://#{get_cobbler_host}.athenahealth.com/LocalRepo/UEK/UEK3
enabled=1
gpgcheck=1
metadata_expire=1m
priority=1
")

  repo_file.close

end #write_net_repo_file

def write_updates_repo_file

  repo_file = File.open("#{Script_Info['repo file dir']}/#{Script_Info['updates repo title']}.repo", 'w+')
  repo_file.chmod(0644)
  repo_file.write( "[#{Script_Info['updates repo title']}]
name=Local #{Script_Info['updates repo title']}
baseurl=http://#{get_cobbler_host}.athenahealth.com/#{Script_Info['updates repo location']}
enabled=1
gpgcheck=1
metadata_expire=1m
priority=1
")

  repo_file.close

end #write_net_repo_file

##############  Main  ###################

raise "You must be root to run me!"  unless Process.uid == 0
raise "This script is only meant for upgrading from #{Script_Info['new version string']}" unless open('/etc/oracle-release') { |file| file.gets.match(/^#{Script_Info['new version string']}$/) }


write_base_repo_file
write_updates_repo_file
system('yum upgrade -y')
delete_old_repos