Class: Haas::Aws

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

Constant Summary collapse

CENTOS_IMAGES = 
{
  "6.5" => {
    "config" => {
      "ssh_user" => "root",
      "root_device" => "/dev/sda"
    },
    "us-east-1"=>"ami-8997afe0",
    "us-west-2"=>"ami-b6bdde86",
    "us-west-1"=>"ami-1a013c5f",
    "eu-west-1"=>"ami-42718735",
    "ap-southeast-1"=>"ami-a08fd9f2",
    "ap-southeast-2"=>"ami-e7138ddd",
    "ap-northeast-1"=>"ami-81294380",
    "sa-east-1"=>"ami-7d02a260"
  },
  "7" => {
    "config" => {
      "ssh_user" => "root",
      "root_device" => "/dev/sda"
    },
    "us-east-1"=>"ami-96a818fe",
    "us-west-2"=>"ami-c7d092f7",
    "us-west-1"=>"ami-6bcfc42e",
    "eu-west-1"=>"ami-e4ff5c93",
    "ap-southeast-1"=>"ami-aea582fc",
    "ap-southeast-2"=>"ami-bd523087",
    "ap-northeast-1"=>"ami-89634988",
    "sa-east-1"=>"ami-bf9520a2"
  }
}
UBUNTU_IMAGES = 
{
  "12.04" => {
    "config" => {
      "ssh_user" => "ubuntu",
      "root_device" => "/dev/sda1"
    },
    "ap-northeast-1" => "ami-f96b40f8",
    "ap-southeast-1" => "ami-da1e3988",
    "eu-central-1" => "ami-643c0a79",
    "eu-west-1" => "ami-6ca1011b",
    "sa-east-1" => "ami-11d4610c",
    "us-east-1" => "ami-34cc7a5c",
    "us-west-1" => "ami-b7515af2",
    "ap-southeast-2" => "ami-9f0e6ca5",
    "us-west-2" => "ami-0f47053f"
  }
}

Class Method Summary collapse

Class Method Details

.connect ⇒ Object 



54
55
56
57
58
59
60
61
62
 
# File 'lib/haas/aws.rb', line 54

def self.connect
  @region = Haas::Config.options[:aws_region] || 'us-east-1'
  AWS.config(
    access_key_id: ENV['AWS_KEY'],
    secret_access_key: ENV['AWS_SECRET'],
    region: region
  )
  @ec2 = AWS::EC2.new
end

.create_key_pair ⇒ Object 



91
92
93
94
95
 
# File 'lib/haas/aws.rb', line 91

def self.create_key_pair
  key_pair = Haas::KeyPair.create(name: Haas.cluster.name)
  File.write(Haas.cluster.identity_file_path, key_pair.private_key)
  File.chmod(0600, Haas.cluster.identity_file_path)
end

.ec2 ⇒ Object 



64
65
66
 
# File 'lib/haas/aws.rb', line 64

def self.ec2
  @ec2
end

.is_cluster_ssh_open?(instances) ⇒ Boolean

Returns:

  • (Boolean) 


165
166
167
168
169
170
 
# File 'lib/haas/aws.rb', line 165

def self.is_cluster_ssh_open?(instances)
  instances.each do |instance|
    return false unless Haas::Utils.is_port_open?(instance.public_dns_name,22)
  end
  return true
end

.launch_instances ⇒ Object 



97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
 
# File 'lib/haas/aws.rb', line 97

def self.launch_instances
  image_id = UBUNTU_IMAGES["12.04"][region]

  if !ec2.security_groups.filter('group-name', 'haas-security-group').first
    security_group = ec2.security_groups.create('haas-security-group')
    security_group.authorize_ingress(:tcp, 22)
    security_group.authorize_ingress(:tcp, 80)
    security_group.authorize_ingress(:tcp, 443)
    security_group.authorize_ingress(:tcp, 8080)
    security_group.authorize_ingress(:tcp, 0..65535, security_group)
    security_group.authorize_ingress(:udp, 0..65535, security_group)
    security_group.authorize_ingress(:icmp, -1, security_group)
  end

  instances = ec2.instances.create({
    :image_id => image_id,
    :instance_type => Haas::Config.options[:instance_type],
    :key_name => Haas.cluster.name,
    :security_groups => ['haas-security-group'],
    :block_device_mappings => [
      {
        :device_name => "/dev/sda1",
        :ebs => {
          :volume_size => 8, # 8 GiB
          :delete_on_termination => true
        }
      },
      {
        :device_name => "/dev/sdf",
        :virtual_name => "ephemeral0"
      }
    ],
    :count => Haas::Config.options[:nb_instances].to_i
  })

  print "Waiting for the instances to start "
  while instances.any? {|i| i.status == :pending; } do
    print '.'
    sleep 1
  end
  puts " done"

  print "Waiting for the instances to be initialized and accessible "
  while !is_cluster_ssh_open?(instances) do
    print '.'
    sleep 1
  end
  puts " done"

  instances.each do |instance|
    Haas::Node.create(
      cluster_id: Haas.cluster.id,
      instance_id: instance.id,
      public_ip_address: instance.ip_address,
      public_dns_name: instance.public_dns_name,
      private_ip_address: instance.private_ip_address,
      private_dns_name: instance.private_dns_name
    )
  end
end

.nb_instance_available ⇒ Object 



76
77
78
79
80
81
82
83
84
85
 
# File 'lib/haas/aws.rb', line 76

def self.nb_instance_available
   = ec2.client.\
  .data[:account_attribute_set]\
  .inject({}) do |m, i|
    m[i[:attribute_name]] = i[:attribute_value_set].first[:attribute_value]; m
  end

  max_instances = ["max-instances"].to_i
  return max_instances - nb_running_instances
end

.nb_running_instances ⇒ Object 



87
88
89
 
# File 'lib/haas/aws.rb', line 87

def self.nb_running_instances
  ec2.instances.inject({}) { |m, i| i.status == :running ? m[i.id] = i.status : nil; m }.length
end

.region ⇒ Object 



68
69
70
 
# File 'lib/haas/aws.rb', line 68

def self.region
  @region
end

.ssh_user ⇒ Object 



72
73
74
 
# File 'lib/haas/aws.rb', line 72

def self.ssh_user
  UBUNTU_IMAGES["12.04"]["config"]["ssh_user"]
end

.terminate_cluster(cluster) ⇒ Object 



158
159
160
161
162
163
 
# File 'lib/haas/aws.rb', line 158

def self.terminate_cluster cluster
  ec2.client.terminate_instances({
    instance_ids: cluster.nodes.map(&:instance_id)
  })
  cluster.destroy
end