Class: Haas::ChefProvider

Inherits:
Object
  • Object
show all
Defined in:
lib/haas/chef.rb

Constant Summary collapse

COOKBOOK_PATH = 
File.join(Haas::Config::WORKING_DIR, 'cookbooks')

Class Method Summary collapse

Class Method Details

.bootstrap_node(node) ⇒ Object 



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# File 'lib/haas/chef.rb', line 84

def self.bootstrap_node node
  require 'chef'
  require 'chef/knife'
  require 'chef/knife/bootstrap'
  require 'chef/knife/core/bootstrap_context'
  require 'chef/knife/ssh'
  require 'net/ssh'
  require 'net/ssh/multi'

  puts "Bootstrapping node #{node.public_dns_name}"

  run_list = ["recipe[ambari::agent]"]
  run_list << "recipe[ambari::server]" if node.ambari_server

  Chef::Config.from_file(Haas.cluster.knife_config_path)
  kb = Chef::Knife::Bootstrap.new
  kb.config[:ssh_user] = Haas.cluster.ssh_user
  kb.config[:run_list] = run_list
  kb.config[:use_sudo] = true
  kb.config[:identity_file] = Haas.cluster.identity_file_path
  kb.config[:distro] = 'chef-full'
  kb.name_args = [node.public_dns_name]
  kb.run
end

.chef_install_cmd ⇒ Object 



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# File 'lib/haas/chef.rb', line 25

def self.chef_install_cmd
  install_cmd = {
    'centos6'    => 'curl https://packagecloud.io/install/repositories/chef/stable/script.rpm | sudo bash && sudo yum install chef-server-core-12.0.0-1.el6.x86_6',
    'ubuntu12' => 'curl https://packagecloud.io/install/repositories/chef/stable/script.deb | sudo bash && sudo apt-get install chef-server-core=12.0.0-1'
  }
  install_cmd[Haas.cluster.distro]
end

.download_cookbook(cookbook_name, url) ⇒ Object 



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# File 'lib/haas/chef.rb', line 109

def self.download_cookbook cookbook_name, url
  require 'open-uri'
  require 'zlib'
  require 'archive/tar/minitar'

  cookbooks_dir = File.join(Haas::Config::WORKING_DIR, 'cookbooks')
  Dir.mkdir(cookbooks_dir) unless File.exists?(cookbooks_dir)
  archive_path = File.join(cookbooks_dir, "#{cookbook_name}.tar.gz")
  open(archive_path, 'wb') do |file|
    file << open(url).read
  end
  tgz = Zlib::GzipReader.new(File.open(archive_path, 'rb'))
  Archive::Tar::Minitar.unpack(tgz, cookbooks_dir)
end

.install_chef_server ⇒ Object 



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# File 'lib/haas/chef.rb', line 33

def self.install_chef_server
  require 'net/ssh'
  chef_server = Haas.cluster.get_chef_server

  Net::SSH.start(
    chef_server.public_dns_name, Haas.cluster.ssh_user,
    :host_key => "ssh-rsa",
    :encryption => "blowfish-cbc",
    :keys => [ Haas.cluster.identity_file_path ],
    :compression => "zlib"
  ) do |ssh|
    puts "Entering chef server installation on the node #{chef_server.public_dns_name}. This may take a while."
    puts "Disable iptables"
    ssh.exec!("sudo service iptables stop")
    puts "Downloading and installing the chef server."
    ssh.exec!(self.chef_install_cmd)
    puts "Configuring chef server."
    ssh.exec!("sudo mkdir -p /etc/opscode/")
    ssh.exec!(%{sudo bash -c "echo \\"nginx['non_ssl_port'] = false\\" >> /etc/opscode/chef-server.rb"})
    ssh.exec!("sudo chef-server-ctl reconfigure")

    client_key = ""
    while !client_key.include?("BEGIN RSA PRIVATE KEY") do
      client_key = ssh.exec!("sudo chef-server-ctl user-create haas-api HAAS Api [email protected] abc123")
    end
    File.write(Haas.cluster.chef_client_pem_path, client_key)

    org_validator_key = ssh.exec!("sudo chef-server-ctl org-create haas Hadoop as a Service --association_user haas-api")
    File.write(Haas.cluster.chef_validator_pem_path, org_validator_key)
  end
end

.setup_cluster ⇒ Object 



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# File 'lib/haas/chef.rb', line 6

def self.setup_cluster
  install_chef_server
  write_knife_config_file
  cookbooks=[
    {'name' => 'ambari', 'url' => "https://supermarket.getchef.com/cookbooks/ambari/download" },
    {'name' => 'apt', 'url' => "https://supermarket.getchef.com/cookbooks/apt/download" }
  ]
  cookbooks.each do |cb|
    download_cookbook cb['name'], cb['url']
  end
  upload_cookbook
  setup_environment
  threads = []
  Haas.cluster.nodes.each do |node|
    threads << Thread.new { bootstrap_node(node) }
  end
  threads.each { |thr| thr.join }
end

.setup_environment ⇒ Object 



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# File 'lib/haas/chef.rb', line 140

def self.setup_environment
  require 'chef/environment'
  require 'chef/rest'
  ambari_server_fqdn = Haas.cluster.get_ambari_server

  override_attributes = {
    :ambari => {
      :server_fqdn => ambari_server_fqdn.private_dns_name
    }
  }

  Chef::Config.from_file(Haas.cluster.knife_config_path)
  environment = Chef::Environment.new
  environment.name(Haas.cluster.name)
  environment.description("haas hadoop cluster")
  environment.override_attributes(override_attributes)
  environment.save
end

.upload_cookbook ⇒ Object 



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# File 'lib/haas/chef.rb', line 124

def self.upload_cookbook
  require 'chef'
  require 'chef/cookbook_uploader'

  puts "Uploading cookbooks to the chef server."

  Chef::Config.from_file(Haas.cluster.knife_config_path)
  cookbook_repo = Chef::CookbookLoader.new(COOKBOOK_PATH)
  cookbook_repo.load_cookbooks
  cbs = []
  cookbook_repo.each do |cookbook_name, cookbook|
    cbs << cookbook
  end
  Chef::CookbookUploader.new(cbs,:force => false, :concurrency => 10).upload_cookbooks
end

.write_knife_config_file ⇒ Object 



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# File 'lib/haas/chef.rb', line 65

def self.write_knife_config_file
  conf = %{
    log_level                    :info
    log_location               STDOUT
    node_name               "haas-api"
    client_key                  "#{Haas.cluster.chef_client_pem_path}"
    validation_client_name   "haas-validator"
    validation_key           "#{Haas.cluster.chef_validator_pem_path}"
    chef_server_url        "https://#{Haas.cluster.get_chef_server.public_dns_name}/organizations/haas"
    cache_type               'BasicFile'
    cache_options( :path => "#{ENV['HOME']}/.chef/checksums" )
    cookbook_path         ["#{COOKBOOK_PATH}"]
    environment             "#{Haas.cluster.name}"
  }

  File.write(Haas.cluster.knife_config_path, conf)
end