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 



82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
 
# File 'lib/haas/chef.rb', line 82

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}"

  user = Haas.cluster.ssh_user
  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] = 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

.download_cookbook(cookbook_name, url) ⇒ Object 



108
109
110
111
112
113
114
115
116
117
118
119
120
121
 
# File 'lib/haas/chef.rb', line 108

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 



22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
 
# File 'lib/haas/chef.rb', line 22

def self.install_chef_server
  require 'net/ssh'
  chef_server = Haas.cluster.get_chef_server
  user = Haas.cluster.ssh_user
  chef_server_file = "chef-server-core-12.0.0_rc.5-1.el5.x86_64.rpm"
  chef_server_url = "https://packagecloud.io/chef/stable/download?distro=6&filename=#{chef_server_file}"
  chef_server_local_path = "/tmp/#{chef_server_file}"

  Net::SSH.start(
    chef_server.public_dns_name, 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!("service iptables stop")
    puts "Downloading and installing the chef server."
    ssh.exec!(%{
      until curl -L '#{chef_server_url}' -o #{chef_server_local_path} && rpm -ivh #{chef_server_local_path}; do
        echo "installing chef server";
      done
    })
    ssh.exec!("rpm -ivh #{chef_server_local_path}")
    puts "Configuring chef server."
    ssh.exec!("mkdir -p /etc/opscode/")
    ssh.exec!(%{echo "nginx['non_ssl_port'] = false" >> /etc/opscode/chef-server.rb})
    ssh.exec!("chef-server-ctl reconfigure")

    client_key = ""
    while !client_key.include?("BEGIN RSA PRIVATE KEY") do
      client_key = ssh.exec!("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!("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 



6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
 
# 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" }]
  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 



139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
 
# File 'lib/haas/chef.rb', line 139

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 



123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
 
# File 'lib/haas/chef.rb', line 123

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 



63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
 
# File 'lib/haas/chef.rb', line 63

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