Class: DevLXC::Cluster

Inherits:
Object
  • Object
show all
Defined in:
lib/dev-lxc/cluster.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(cluster_config) ⇒ Cluster

Returns a new instance of Cluster.



9
10
11
12
13
14
15
16
17
18
19
20
21
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
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
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
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
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
 
# File 'lib/dev-lxc/cluster.rb', line 9

def initialize(cluster_config)
  FileUtils.mkdir_p('/var/dev-lxc') unless Dir.exist?('/var/dev-lxc')
  validate_cluster_config(cluster_config)

  @config = Hash.new { |hash, key| hash[key] = {} }
  @server_configs = Hash.new

  %w(adhoc analytics chef-backend chef-server compliance nodes supermarket).each do |server_type|
    if cluster_config[server_type]
      @config[server_type][:mounts] = cluster_config[server_type]["mounts"]
      @config[server_type][:mounts] ||= cluster_config["mounts"]
      @config[server_type][:mounts] ||= Array.new
      @config[server_type][:mounts] << "/var/dev-lxc var/dev-lxc"
      @config[server_type][:ssh_keys] = cluster_config[server_type]["ssh-keys"]
      @config[server_type][:ssh_keys] ||= cluster_config["ssh-keys"]
      @config[server_type][:base_container_name] = cluster_config[server_type]["base_container"]
      @config[server_type][:base_container_name] ||= cluster_config["base_container"]

      case server_type
      when "adhoc"
        if cluster_config[server_type]["servers"]
          cluster_config[server_type]["servers"].each do |server_name, server_config|
            products = server_config['products']
            products ||= Hash.new
            @server_configs[server_name] = {
              server_type: server_type,
              products: products,
              ipaddress: server_config['ipaddress'],
              additional_fqdn: nil,
              mounts: @config[server_type][:mounts],
              ssh_keys: @config[server_type][:ssh_keys]
            }
          end
        end
      when "analytics"
        @config[server_type][:topology] = cluster_config[server_type]["topology"]
        @config[server_type][:topology] ||= 'standalone'
        @config[server_type][:fqdn] = cluster_config[server_type]["analytics_fqdn"]
        @config[server_type][:frontends] = Array.new

        if cluster_config[server_type]["servers"]
          cluster_config[server_type]["servers"].each do |server_name, server_config|
            additional_fqdn = nil
            products = server_config['products']
            products ||= Hash.new
            @server_configs[server_name] = server_config
            case @config[server_type][:topology]
            when 'standalone'
              @config[server_type][:bootstrap_backend] = server_name if server_config["role"].nil?
              @config[server_type][:fqdn] ||= @config[server_type][:bootstrap_backend]
            when 'tier'
              @config[server_type][:bootstrap_backend] = server_name if server_config["role"] == "backend" && server_config["bootstrap"] == true
              if server_config["role"] == "frontend"
                additional_fqdn = @config[server_type][:fqdn]
                @config[server_type][:frontends] << server_name
              end
            end
            @server_configs[server_name] = {
              server_type: server_type,
              products: products,
              ipaddress: server_config['ipaddress'],
              additional_fqdn: additional_fqdn,
              mounts: @config[server_type][:mounts],
              ssh_keys: @config[server_type][:ssh_keys]
            }
          end
        end
      when "chef-backend"
        @config[server_type][:fqdn] = cluster_config[server_type]["api_fqdn"]
        @config[server_type][:backends] = Array.new
        @config[server_type][:frontends] = Array.new

        servers = cluster_config[server_type]["servers"]
        if servers
          @config[server_type][:leader_backend] = servers.select { |s,sc| sc['role'] == 'backend' && sc['leader'] == true }.keys.first
          @config[server_type][:bootstrap_frontend] = servers.select { |s,sc| sc['role'] == 'frontend' && sc['bootstrap'] == true }.keys.first
          @config[server_type][:backends] << @config[server_type][:leader_backend]
          @config[server_type][:frontends] << @config[server_type][:bootstrap_frontend]
          servers.each do |server_name, server_config|
            additional_fqdn = nil
            products = server_config['products']
            products ||= Hash.new
            case server_config["role"]
            when "backend"
              @config[server_type][:backends] << server_name unless server_name == @config[server_type][:leader_backend]
            when "frontend"
              additional_fqdn = @config[server_type][:fqdn]
              @config[server_type][:frontends] << server_name unless server_name == @config[server_type][:bootstrap_frontend]
            end
            @server_configs[server_name] = {
              server_type: server_type,
              products: products,
              ipaddress: server_config['ipaddress'],
              additional_fqdn: additional_fqdn,
              mounts: @config[server_type][:mounts],
              ssh_keys: @config[server_type][:ssh_keys],
              chef_server_type: 'chef-server'
            }
          end
        end
      when "chef-server"
        @config[server_type][:topology] = cluster_config[server_type]["topology"]
        @config[server_type][:topology] ||= 'standalone'
        @config[server_type][:fqdn] = cluster_config[server_type]["api_fqdn"]
        @config[server_type][:frontends] = Array.new

        if cluster_config[server_type]["servers"]
          cluster_config[server_type]["servers"].each do |server_name, server_config|
            additional_fqdn = nil
            products = server_config['products']
            products ||= Hash.new
            chef_server_type = 'private-chef' if products.has_key?('private-chef')
            chef_server_type = 'chef-server' if products.has_key?('chef-server')
            case @config[server_type][:topology]
            when 'standalone'
              @config[server_type][:bootstrap_backend] = server_name if server_config["role"].nil?
              @config[server_type][:fqdn] ||= @config[server_type][:bootstrap_backend]
            when 'tier'
              @config[server_type][:bootstrap_backend] = server_name if server_config["role"] == "backend" && server_config["bootstrap"] == true
              if server_config["role"] == "frontend"
                additional_fqdn = @config[server_type][:fqdn]
                @config[server_type][:frontends] << server_name
              end
            end
            @server_configs[server_name] = {
              server_type: server_type,
              products: products,
              ipaddress: server_config['ipaddress'],
              additional_fqdn: additional_fqdn,
              mounts: @config[server_type][:mounts],
              ssh_keys: @config[server_type][:ssh_keys],
              chef_server_type: chef_server_type
            }
          end
        end
      when "compliance", "supermarket"
        unless cluster_config[server_type]["servers"].first.nil?
          (server_name, server_config) = cluster_config[server_type]["servers"].first
          @config[server_type][:fqdn] = server_name
          products = server_config['products']
          products ||= Hash.new
          @server_configs[server_name] = {
            server_type: server_type,
            products: products,
            ipaddress: server_config['ipaddress'],
            additional_fqdn: nil,
            mounts: @config[server_type][:mounts],
            ssh_keys: @config[server_type][:ssh_keys]
          }
        end
      when "nodes"
        if cluster_config[server_type]["servers"]
          cluster_config[server_type]["servers"].each do |server_name, server_config|
            products = server_config['products']
            products ||= Hash.new
            @server_configs[server_name] = {
              server_type: server_type,
              products: products,
              ipaddress: server_config['ipaddress'],
              additional_fqdn: nil,
              mounts: @config[server_type][:mounts],
              ssh_keys: @config[server_type][:ssh_keys],
              chef_server_url: server_config['chef_server_url'],
              validation_client_name: server_config['validation_client_name'],
              validation_key: server_config['validation_key']
            }
          end
        end
      end
    end
  end
end

Instance Attribute Details

#config ⇒ Object (readonly)

Returns the value of attribute config.



7
8
9
 
# File 'lib/dev-lxc/cluster.rb', line 7

def config
  @config
end

Instance Method Details

#analytics_config ⇒ Object 



859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
 
# File 'lib/dev-lxc/cluster.rb', line 859

def analytics_config
  analytics_config = %Q(analytics_fqdn "#{@config['analytics'][:fqdn]}"
topology "#{@config['analytics'][:topology]}"
)
  if @config['analytics'][:topology] == 'tier'
    analytics_config += %Q(
server "#{@config['analytics'][:bootstrap_backend]}",
  :ipaddress => "#{@server_configs[@config['analytics'][:bootstrap_backend]][:ipaddress]}",
  :role => "backend",
  :bootstrap => true

backend_vip "#{@config['analytics'][:bootstrap_backend]}",
  :ipaddress => "#{@server_configs[@config['analytics'][:bootstrap_backend]][:ipaddress]}"
)
    @config['analytics'][:frontends].each do |frontend_name|
      analytics_config += %Q(
server "#{frontend_name}",
  :ipaddress => "#{@server_configs[frontend_name][:ipaddress]}",
  :role => "frontend"
)
    end
  end
  return analytics_config
end

#chef_repo(force = false, pivotal = false) ⇒ Object 



760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
 
# File 'lib/dev-lxc/cluster.rb', line 760

def chef_repo(force=false, pivotal=false)
  if @config['chef-server'][:bootstrap_backend].nil?
    puts "ERROR: A bootstrap backend Chef Server is not defined in the cluster's config. Please define it first."
    exit 1
  end
  chef_server = get_server(@config['chef-server'][:bootstrap_backend])
  if ! chef_server.container.defined?
    puts "ERROR: The '#{chef_server.name}' Chef Server does not exist."
    exit 1
  end

  puts "Creating chef-repo with pem files and knife.rb in the current directory"
  FileUtils.mkdir_p("./chef-repo/.chef")

  pem_files = Dir.glob("#{chef_server.container.config_item('lxc.rootfs')}/root/chef-repo/.chef/*.pem")
  if pem_files.empty?
    puts "The pem files can not be copied because they do not exist in '#{chef_server.name}' Chef Server's `/root/chef-repo/.chef` directory"
  else
    pem_files.delete_if { |pem_file| pem_file.end_with?("/pivotal.pem") } unless pivotal
    FileUtils.cp( pem_files, "./chef-repo/.chef" )
  end

  chef_server_root = "https://#{@config['chef-server'][:fqdn]}"
  chef_server_url = "https://#{@config['chef-server'][:fqdn]}/organizations/demo"
  validator_name = "demo-validator"

  if pivotal
    if File.exists?("./chef-repo/.chef/pivotal.rb") && ! force
      puts "Skipping pivotal.rb because it already exists in `./chef-repo/.chef`"
    else
      pivotal_rb_path = "#{chef_server.container.config_item('lxc.rootfs')}/root/chef-repo/.chef/pivotal.rb"
      if File.exists?(pivotal_rb_path)
        pivotal_rb = IO.read(pivotal_rb_path)
        pivotal_rb.sub!(/^chef_server_root .*/, "chef_server_root \"#{chef_server_root}\"")
        pivotal_rb.sub!(/^chef_server_url .*/, "chef_server_url \"#{chef_server_root}\"")
        IO.write("./chef-repo/.chef/pivotal.rb", pivotal_rb)
      else
        puts "The pivotal.rb file can not be copied because it does not exist in '#{chef_server.name}' Chef Server's `/root/chef-repo/.chef` directory"
      end
    end
  end

  if File.exists?("./chef-repo/.chef/knife.rb") && ! force
    puts "Skipping knife.rb because it already exists in `./chef-repo/.chef`"
  else
    knife_rb_path = "#{chef_server.container.config_item('lxc.rootfs')}/root/chef-repo/.chef/knife.rb"
    if File.exists?(knife_rb_path)
      knife_rb = IO.read(knife_rb_path)
      knife_rb.sub!(/^chef_server_url .*/, "chef_server_url \"#{chef_server_url}\"")
      IO.write("./chef-repo/.chef/knife.rb", knife_rb)
    else
      puts "The knife.rb file can not be copied because it does not exist in '#{chef_server.name}' Chef Server's `/root/chef-repo/.chef` directory"
    end
  end
end

#chef_server_config ⇒ Object 



816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
 
# File 'lib/dev-lxc/cluster.rb', line 816

def chef_server_config
  chef_server_config = %Q(api_fqdn "#{@config['chef-server'][:fqdn]}"\n)
  if @config['chef-server'][:topology] == 'tier'
    chef_server_config += %Q(
topology "#{@config['chef-server'][:topology]}"

server "#{@config['chef-server'][:bootstrap_backend]}",
  :ipaddress => "#{@server_configs[@config['chef-server'][:bootstrap_backend]][:ipaddress]}",
  :role => "backend",
  :bootstrap => true

backend_vip "#{@config['chef-server'][:bootstrap_backend]}",
  :ipaddress => "#{@server_configs[@config['chef-server'][:bootstrap_backend]][:ipaddress]}"
)
    @config['chef-server'][:frontends].each do |frontend_name|
      chef_server_config += %Q(
server "#{frontend_name}",
  :ipaddress => "#{@server_configs[frontend_name][:ipaddress]}",
  :role => "frontend"
)
    end
  end
  if @config['analytics'][:fqdn]
    chef_server_config += %Q(
oc_id['applications'] ||= {}
oc_id['applications']['analytics'] = {
  'redirect_uri' => 'https://#{@config['analytics'][:fqdn]}/'
}
rabbitmq['vip'] = '#{@config['chef-server'][:bootstrap_backend]}'
rabbitmq['node_ip_address'] = '0.0.0.0'
)
  end
  if @config['supermarket'][:fqdn]
    chef_server_config += %Q(
oc_id['applications'] ||= {}
oc_id['applications']['supermarket'] = {
  'redirect_uri' => 'https://#{@config['supermarket'][:fqdn]}/auth/chef_oauth2/callback'
}
)
  end
  return chef_server_config
end

#clone_from_base_container(server) ⇒ Object 



387
388
389
390
391
392
393
394
395
396
397
398
 
# File 'lib/dev-lxc/cluster.rb', line 387

def clone_from_base_container(server)
  server_type = @server_configs[server.name][:server_type]
  base_container = DevLXC::Container.new(@config[server_type][:base_container_name])
  puts "Cloning base container '#{base_container.name}' into container '#{server.name}'"
  base_container.clone(server.name, {:flags => LXC::LXC_CLONE_SNAPSHOT})
  server.container.load_config
  puts "Deleting SSH Server Host Keys"
  FileUtils.rm_f(Dir.glob("#{server.container.config_item('lxc.rootfs')}/etc/ssh/ssh_host*_key*"))
  puts "Adding lxc.hook.post-stop hook"
  server.container.set_config_item("lxc.hook.post-stop", "/usr/local/share/lxc/hooks/post-stop-dhcp-release")
  server.container.save_config
end

#configure_analytics(server) ⇒ Object 



644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
 
# File 'lib/dev-lxc/cluster.rb', line 644

def configure_analytics(server)
  FileUtils.mkdir_p("#{server.container.config_item('lxc.rootfs')}/var/opt/opscode-analytics")
  FileUtils.touch("#{server.container.config_item('lxc.rootfs')}/var/opt/opscode-analytics/.license.accepted")
  if @config['analytics'][:topology] == "standalone" || @config['analytics'][:bootstrap_backend] == server.name
    puts "Copying /etc/opscode-analytics from Chef Server bootstrap backend '#{@config['chef-server'][:bootstrap_backend]}'"
    FileUtils.cp_r("#{get_server(@config['chef-server'][:bootstrap_backend]).container.config_item('lxc.rootfs')}/etc/opscode-analytics",
                   "#{server.container.config_item('lxc.rootfs')}/etc", preserve: true)

    IO.write("#{server.container.config_item('lxc.rootfs')}/etc/opscode-analytics/opscode-analytics.rb", analytics_config)
  elsif @config['analytics'][:frontends].include?(server.name)
    puts "Copying /etc/opscode-analytics from Analytics bootstrap backend '#{@config['analytics'][:bootstrap_backend]}'"
    FileUtils.cp_r("#{get_server(@config['analytics'][:bootstrap_backend]).container.config_item('lxc.rootfs')}/etc/opscode-analytics",
                   "#{server.container.config_item('lxc.rootfs')}/etc", preserve: true)
  end
  run_ctl(server, "opscode-analytics", "reconfigure")
end

#configure_chef_backend(server) ⇒ Object 



558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
 
# File 'lib/dev-lxc/cluster.rb', line 558

def configure_chef_backend(server)
  FileUtils.mkdir_p("#{server.container.config_item('lxc.rootfs')}/var/opt/chef-backend")
  FileUtils.touch("#{server.container.config_item('lxc.rootfs')}/var/opt/chef-backend/.license.accepted")
  if server.name == @config['chef-backend'][:leader_backend]
    puts "Creating /etc/chef-backend/chef-backend.rb"
    FileUtils.mkdir_p("#{server.container.config_item('lxc.rootfs')}/etc/chef-backend")
    chef_backend_config = "publish_address '#{@server_configs[server.name][:ipaddress]}'\n"
    IO.write("#{server.container.config_item('lxc.rootfs')}/etc/chef-backend/chef-backend.rb", chef_backend_config)
    run_ctl(server, "chef-backend", "bootstrap --yes")
  else
    puts "Joining #{server.name} to the chef-backend cluster"
    leader_backend = get_server(@config['chef-backend'][:leader_backend])
    FileUtils.cp("#{leader_backend.container.config_item('lxc.rootfs')}/etc/chef-backend/chef-backend-secrets.json",
                 "#{server.container.config_item('lxc.rootfs')}/root/")
    run_ctl(server, "chef-backend", "join-cluster #{@server_configs[leader_backend.name][:ipaddress]} -p #{@server_configs[server.name][:ipaddress]} -s /root/chef-backend-secrets.json --yes")
  end
end

#configure_chef_client(server) ⇒ Object 



526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
 
# File 'lib/dev-lxc/cluster.rb', line 526

def configure_chef_client(server)
  if @server_configs[server.name][:chef_server_url] || @server_configs[server.name][:validation_client_name] || @server_configs[server.name][:validation_key]
    chef_server_url = @server_configs[server.name][:chef_server_url]
    validation_client_name = @server_configs[server.name][:validation_client_name]
    validation_key = @server_configs[server.name][:validation_key]
  elsif @config['chef-server'][:bootstrap_backend] && get_server(@config['chef-server'][:bootstrap_backend]).container.defined?
    chef_server_url = "https://#{@config['chef-server'][:fqdn]}/organizations/demo"
    validation_client_name = 'demo-validator'
    validation_key = "#{get_server(@config['chef-server'][:bootstrap_backend]).container.config_item('lxc.rootfs')}/root/chef-repo/.chef/demo-validator.pem"
  elsif @config['chef-backend'][:bootstrap_frontend] && get_server(@config['chef-backend'][:bootstrap_frontend]).container.defined?
    chef_server_url = "https://#{@config['chef-backend'][:fqdn]}/organizations/demo"
    validation_client_name = 'demo-validator'
    validation_key = "#{get_server(@config['chef-backend'][:bootstrap_frontend]).container.config_item('lxc.rootfs')}/root/chef-repo/.chef/demo-validator.pem"
  end

  puts "Configuring Chef Client in container '#{server.name}' for Chef Server '#{chef_server_url}'"

  FileUtils.mkdir_p("#{server.container.config_item('lxc.rootfs')}/etc/chef")

  client_rb = %Q(chef_server_url '#{chef_server_url}'
validation_client_name '#{validation_client_name}'
ssl_verify_mode :verify_none
)
  IO.write("#{server.container.config_item('lxc.rootfs')}/etc/chef/client.rb", client_rb)

  if validation_key && File.exist?(validation_key)
    FileUtils.cp(validation_key, "#{server.container.config_item('lxc.rootfs')}/etc/chef/validation.pem")
  else
    puts "WARNING: The validation key '#{validation_key}' does not exist."
  end
end

#configure_chef_frontend(server) ⇒ Object 



576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
 
# File 'lib/dev-lxc/cluster.rb', line 576

def configure_chef_frontend(server)
  puts "Creating /etc/opscode/chef-server.rb"
  FileUtils.mkdir_p("#{server.container.config_item('lxc.rootfs')}/etc/opscode")
  leader_backend = get_server(@config['chef-backend'][:leader_backend])
  run_ctl(leader_backend, "chef-backend", "gen-server-config #{server.name} --filename /tmp/#{server.name}.rb")
  FileUtils.cp("#{leader_backend.container.config_item('lxc.rootfs')}/tmp/#{server.name}.rb",
               "#{server.container.config_item('lxc.rootfs')}/etc/opscode/chef-server.rb")
  unless server.name == @config['chef-backend'][:bootstrap_frontend]
    bootstrap_frontend = get_server(@config['chef-backend'][:bootstrap_frontend])
    puts "Copying /etc/opscode/private-chef-secrets.json from bootstrap frontend '#{bootstrap_frontend.name}'"
    FileUtils.cp("#{bootstrap_frontend.container.config_item('lxc.rootfs')}/etc/opscode/private-chef-secrets.json",
                 "#{server.container.config_item('lxc.rootfs')}/etc/opscode/")
    puts "Copying /etc/opscode/pivotal.pem from bootstrap frontend '#{bootstrap_frontend.name}'"
    FileUtils.cp("#{bootstrap_frontend.container.config_item('lxc.rootfs')}/etc/opscode/pivotal.pem",
                 "#{server.container.config_item('lxc.rootfs')}/etc/opscode/")
  end
  run_ctl(server, "chef-server", "reconfigure")
end

#configure_chef_server(server) ⇒ Object 



595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
 
# File 'lib/dev-lxc/cluster.rb', line 595

def configure_chef_server(server)
  if @config['chef-server'][:topology] == "standalone" || @config['chef-server'][:bootstrap_backend] == server.name
    case @server_configs[server.name][:chef_server_type]
    when 'private-chef'
      puts "Creating /etc/opscode/private-chef.rb"
      FileUtils.mkdir_p("#{server.container.config_item('lxc.rootfs')}/etc/opscode")
      IO.write("#{server.container.config_item('lxc.rootfs')}/etc/opscode/private-chef.rb", chef_server_config)
    when 'chef-server'
      puts "Creating /etc/opscode/chef-server.rb"
      FileUtils.mkdir_p("#{server.container.config_item('lxc.rootfs')}/etc/opscode")
      IO.write("#{server.container.config_item('lxc.rootfs')}/etc/opscode/chef-server.rb", chef_server_config)
    end
  elsif @config['chef-server'][:frontends].include?(server.name)
    puts "Copying /etc/opscode from bootstrap backend '#{@config['chef-server'][:bootstrap_backend]}'"
    FileUtils.cp_r("#{get_server(@config['chef-server'][:bootstrap_backend]).container.config_item('lxc.rootfs')}/etc/opscode",
                   "#{server.container.config_item('lxc.rootfs')}/etc", preserve: true)
  end
  run_ctl(server, @server_configs[server.name][:chef_server_type], "reconfigure")
end

#configure_compliance(server) ⇒ Object 



661
662
663
664
665
 
# File 'lib/dev-lxc/cluster.rb', line 661

def configure_compliance(server)
  FileUtils.mkdir_p("#{server.container.config_item('lxc.rootfs')}/var/opt/chef-compliance")
  FileUtils.touch("#{server.container.config_item('lxc.rootfs')}/var/opt/chef-compliance/.license.accepted")
  run_ctl(server, "chef-compliance", "reconfigure")
end

#configure_manage(server) ⇒ Object 



632
633
634
635
636
637
638
639
640
641
642
 
# File 'lib/dev-lxc/cluster.rb', line 632

def configure_manage(server)
  FileUtils.mkdir_p("#{server.container.config_item('lxc.rootfs')}/var/opt/chef-manage")
  FileUtils.touch("#{server.container.config_item('lxc.rootfs')}/var/opt/chef-manage/.license.accepted")
  if @server_configs[server.name][:chef_server_type] == 'private-chef'
    puts "Disabling old opscode-webui in /etc/opscode/private-chef.rb"
    DevLXC.search_file_delete_line("#{server.container.config_item('lxc.rootfs')}/etc/opscode/private-chef.rb", /opscode_webui[.enable.]/)
    DevLXC.append_line_to_file("#{server.container.config_item('lxc.rootfs')}/etc/opscode/private-chef.rb", "\nopscode_webui['enable'] = false\n")
    run_ctl(server, @server_configs[server.name][:chef_server_type], "reconfigure")
  end
  run_ctl(server, "opscode-manage", "reconfigure")
end

#configure_products(server) ⇒ Object 



490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
 
# File 'lib/dev-lxc/cluster.rb', line 490

def configure_products(server)
  puts "Configuring container '#{server.name}'"
  server.start unless server.container.running?
  required_products = @server_configs[server.name][:required_products].keys if @server_configs[server.name][:required_products]
  required_products ||= Array.new
  server_type = @server_configs[server.name][:server_type]
  case server_type
  when 'adhoc'
    # Allow adhoc servers time to generate SSH Server Host Keys
    sleep 5
  when 'analytics'
    configure_analytics(server) if required_products.include?('analytics')
  when 'chef-backend'
    configure_chef_backend(server) if required_products.include?('chef-backend')
    if required_products.include?('chef-server')
      configure_chef_frontend(server)
      create_users(server) if server.name == @config['chef-backend'][:bootstrap_frontend]
    end
    configure_manage(server) if required_products.include?('manage')
  when 'chef-server'
    if required_products.include?('chef-server') || required_products.include?('private-chef')
      configure_chef_server(server)
      create_users(server) if server.name == @config['chef-server'][:bootstrap_backend]
    end
    configure_reporting(server) if required_products.include?('reporting')
    configure_push_jobs_server(server) if required_products.include?('push-jobs-server')
    configure_manage(server) if required_products.include?('manage')
  when 'compliance'
    configure_compliance(server) if required_products.include?('compliance')
  when 'nodes'
    configure_chef_client(server) if required_products.include?('chef') || required_products.include?('chefdk')
  when 'supermarket'
    configure_supermarket(server) if required_products.include?('supermarket')
  end
end

#configure_push_jobs_server(server) ⇒ Object 



627
628
629
630
 
# File 'lib/dev-lxc/cluster.rb', line 627

def configure_push_jobs_server(server)
  run_ctl(server, "opscode-push-jobs-server", "reconfigure")
  run_ctl(server, @server_configs[server.name][:chef_server_type], "reconfigure")
end

#configure_reporting(server) ⇒ Object 



615
616
617
618
619
620
621
622
623
624
625
 
# File 'lib/dev-lxc/cluster.rb', line 615

def configure_reporting(server)
  FileUtils.mkdir_p("#{server.container.config_item('lxc.rootfs')}/var/opt/opscode-reporting")
  FileUtils.touch("#{server.container.config_item('lxc.rootfs')}/var/opt/opscode-reporting/.license.accepted")
  if @config['chef-server'][:frontends].include?(server.name)
    puts "Copying /etc/opscode-reporting from bootstrap backend '#{@config['chef-server'][:bootstrap_backend]}'"
    FileUtils.cp_r("#{get_server(@config['chef-server'][:bootstrap_backend]).container.config_item('lxc.rootfs')}/etc/opscode-reporting",
                   "#{server.container.config_item('lxc.rootfs')}/etc", preserve: true)
  end
  run_ctl(server, @server_configs[server.name][:chef_server_type], "reconfigure")
  run_ctl(server, "opscode-reporting", "reconfigure")
end

#configure_supermarket(server) ⇒ Object 



667
668
669
670
671
672
673
674
675
676
677
678
679
680
 
# File 'lib/dev-lxc/cluster.rb', line 667

def configure_supermarket(server)
  if @config['chef-server'][:bootstrap_backend] && get_server(@config['chef-server'][:bootstrap_backend]).container.defined?
    chef_server_supermarket_config = JSON.parse(IO.read("#{get_server(@config['chef-server'][:bootstrap_backend]).container.config_item('lxc.rootfs')}/etc/opscode/oc-id-applications/supermarket.json"))
    supermarket_config = {
      'chef_server_url' => "https://#{@config['chef-server'][:fqdn]}/",
      'chef_oauth2_app_id' => chef_server_supermarket_config['uid'],
      'chef_oauth2_secret' => chef_server_supermarket_config['secret'],
      'chef_oauth2_verify_ssl' => false
    }
    FileUtils.mkdir_p("#{server.container.config_item('lxc.rootfs')}/etc/supermarket")
    IO.write("#{server.container.config_item('lxc.rootfs')}/etc/supermarket/supermarket.json", JSON.pretty_generate(supermarket_config))
  end
  run_ctl(server, "supermarket", "reconfigure")
end

#create_users(server) ⇒ Object 



686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
 
# File 'lib/dev-lxc/cluster.rb', line 686

def create_users(server)
  puts "Creating org, user, keys and knife.rb in /root/chef-repo/.chef"
  FileUtils.mkdir_p("#{server.container.config_item('lxc.rootfs')}/root/chef-repo/.chef")

  chef_server_root = "https://127.0.0.1"
  chef_server_url = "https://127.0.0.1/organizations/demo"
  admin_username = "mary-admin"
  username = "joe-user"
  validator_name = "demo-validator"

  FileUtils.cp( "#{server.container.config_item('lxc.rootfs')}/etc/opscode/pivotal.pem", "#{server.container.config_item('lxc.rootfs')}/root/chef-repo/.chef" )

  pivotal_rb = %Q(
current_dir = File.dirname(__FILE__)

chef_server_root "#{chef_server_root}"
chef_server_url "#{chef_server_root}"

node_name "pivotal"
client_key "\#{current_dir}/pivotal.pem"

cookbook_path Dir.pwd + "/cookbooks"
knife[:chef_repo_path] = Dir.pwd

ssl_verify_mode :verify_none
)
  IO.write("#{server.container.config_item('lxc.rootfs')}/root/chef-repo/.chef/pivotal.rb", pivotal_rb)

  knife_rb = %Q(
current_dir = File.dirname(__FILE__)

chef_server_url "#{chef_server_url}"

node_name "#{admin_username}"
client_key "\#{current_dir}/#{admin_username}.pem"
)

  knife_rb += %Q(
#node_name "#{username}"
#client_key "\#{current_dir}/#{username}.pem"
) unless username.nil?

  knife_rb += %Q(
validation_client_name "#{validator_name}"
validation_key "\#{current_dir}/#{validator_name}.pem"

cookbook_path Dir.pwd + "/cookbooks"
knife[:chef_repo_path] = Dir.pwd

ssl_verify_mode :verify_none
)
  IO.write("#{server.container.config_item('lxc.rootfs')}/root/chef-repo/.chef/knife.rb", knife_rb)

  case @server_configs[server.name][:chef_server_type]
  when 'private-chef'
    # give time for all services to come up completely
    sleep 60
    server.run_command("/opt/opscode/embedded/bin/gem install knife-opc --no-ri --no-rdoc -v 0.3.1")
    server.run_command("/opt/opscode/embedded/bin/knife opc org create demo demo --filename /root/chef-repo/.chef/demo-validator.pem -c /root/chef-repo/.chef/pivotal.rb")
    server.run_command("/opt/opscode/embedded/bin/knife opc user create mary-admin mary admin [email protected] mary-admin --filename /root/chef-repo/.chef/mary-admin.pem -c /root/chef-repo/.chef/pivotal.rb")
    server.run_command("/opt/opscode/embedded/bin/knife opc org user add demo mary-admin --admin -c /root/chef-repo/.chef/pivotal.rb")
    server.run_command("/opt/opscode/embedded/bin/knife opc user create joe-user joe user [email protected] joe-user --filename /root/chef-repo/.chef/joe-user.pem -c /root/chef-repo/.chef/pivotal.rb")
    server.run_command("/opt/opscode/embedded/bin/knife opc org user add demo joe-user -c /root/chef-repo/.chef/pivotal.rb")
  when 'chef-server'
    # give time for all services to come up completely
    sleep 10
    run_ctl(server, "chef-server", "org-create demo demo --filename /root/chef-repo/.chef/demo-validator.pem")
    run_ctl(server, "chef-server", "user-create mary-admin mary admin [email protected] mary-admin --filename /root/chef-repo/.chef/mary-admin.pem")
    run_ctl(server, "chef-server", "org-user-add demo mary-admin --admin")
    run_ctl(server, "chef-server", "user-create joe-user joe user [email protected] joe-user --filename /root/chef-repo/.chef/joe-user.pem")
    run_ctl(server, "chef-server", "org-user-add demo joe-user")
  end
end

#get_product_url(server, product_name, product_options) ⇒ Object 



400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
 
# File 'lib/dev-lxc/cluster.rb', line 400

def get_product_url(server, product_name, product_options)
  server_type = @server_configs[server.name][:server_type]
  base_container = DevLXC::Container.new(@config[server_type][:base_container_name])
  mixlib_install_platform_detection_path = "#{base_container.config_item('lxc.rootfs')}/mixlib-install-platform-detection"
  IO.write(mixlib_install_platform_detection_path, Mixlib::Install::Generator::Bourne.detect_platform_sh)
  platform_results = `chroot #{base_container.config_item('lxc.rootfs')} bash mixlib-install-platform-detection`
  File.unlink(mixlib_install_platform_detection_path)
  if platform_results.empty?
    puts "ERROR: Unable to detect the platform of container '#{base_container.name}'"
    exit 1
  end
  (platform, platform_version, architecture) = platform_results.split
  product_version = product_options['version'] if product_options
  product_version ||= 'latest'
  channel = product_options['channel'] if product_options
  channel ||= 'stable'
  channel = channel.to_sym
  options = {
    product_name: product_name,
    product_version: product_version,
    channel: channel,
    platform: platform,
    platform_version: platform_version,
    architecture: architecture
  }
  artifact = Mixlib::Install.new(options).artifact_info
  if artifact.class != Mixlib::Install::ArtifactInfo
    puts "ERROR: Unable to find download URL for the following product"
    puts JSON.pretty_generate(options)
    exit 1
  end
  artifact.url
end

#get_server(server_name) ⇒ Object 



236
237
238
239
240
241
242
 
# File 'lib/dev-lxc/cluster.rb', line 236

def get_server(server_name)
  ipaddress = @server_configs[server_name][:ipaddress]
  additional_fqdn = @server_configs[server_name][:additional_fqdn]
  mounts = @server_configs[server_name][:mounts]
  ssh_keys = @server_configs[server_name][:ssh_keys]
  Server.new(server_name, ipaddress, additional_fqdn, mounts, ssh_keys)
end

#get_sorted_servers(server_name_regex = nil) ⇒ Object 



244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
 
# File 'lib/dev-lxc/cluster.rb', line 244

def get_sorted_servers(server_name_regex=nil)
  servers = Array.new

  # the order of this list of server_types matters
  # it determines the order in which actions are applied to each server_type
  %w(chef-backend chef-server analytics compliance supermarket nodes adhoc).each do |server_type|
    unless @config[server_type].empty?
      case server_type
      when "chef-backend"
        @config[server_type][:backends].each do |backend_name|
          servers << get_server(backend_name)
        end
        @config[server_type][:frontends].each do |frontend_name|
          servers << get_server(frontend_name)
        end
      when "analytics", "chef-server"
        if @config[server_type][:bootstrap_backend]
          server_name = @config[server_type][:bootstrap_backend]
          servers << get_server(server_name)
        end
        @config[server_type][:frontends].each do |frontend_name|
          servers << get_server(frontend_name)
        end
      when "adhoc", "compliance", "nodes", "supermarket"
        server_configs = @server_configs.select { |server_name, server_config| server_config[:server_type] == server_type }
        server_configs.each_key { |server_name| servers << get_server(server_name) }
      end
    end
  end
  servers.select { |s| s.name =~ /#{server_name_regex}/ }
end

#install_products(server) ⇒ Object 



471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
 
# File 'lib/dev-lxc/cluster.rb', line 471

def install_products(server)
  if !server.snapshot_list.select { |sn| sn[2].start_with?("dev-lxc build: products installed") }.empty?
    puts "Skipping product installation for container '#{server.name}' because it already has a 'products installed' snapshot"
    return
  end
  if server.container.running?
    server_was_running = true
  else
    server_was_running = false
    server.start
  end
  @server_configs[server.name][:required_products].each do |product_name, package_source|
    server.install_package(package_source)
  end
  server.stop
  server.snapshot("dev-lxc build: products installed")
  server.start if server_was_running
end

#prep_product_cache(servers) ⇒ Object 



434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
 
# File 'lib/dev-lxc/cluster.rb', line 434

def prep_product_cache(servers)
  all_required_products = Hash.new
  servers.each do |server|
    products = @server_configs[server.name][:products]
    @server_configs[server.name][:required_products] = Hash.new
    if !server.snapshot_list.select { |sn| sn[2].start_with?("dev-lxc build: products installed") }.empty?
      puts "Skipping product cache preparation for container '#{server.name}' because it has a 'products installed' snapshot"
      next
    end
    products.each do |product_name, product_options|
      if product_options && product_options['package_source']
        package_source = product_options['package_source']
        all_required_products[package_source] = product_name
        @server_configs[server.name][:required_products][product_name] = package_source
      else
        package_source = get_product_url(server, product_name, product_options)
        all_required_products[package_source] = product_name
        product_cache_path = "/var/dev-lxc/cache/chef-products/#{product_name}/#{File.basename(package_source)}"
        @server_configs[server.name][:required_products][product_name] = product_cache_path
      end
    end
  end
  all_required_products.each do |package_source, product_name|
    if package_source.start_with?('http')
      product_cache_path = "/var/dev-lxc/cache/chef-products/#{product_name}/#{File.basename(package_source)}"
      if !File.exist?(product_cache_path)
        FileUtils.mkdir_p(File.dirname(product_cache_path)) unless Dir.exist?(File.dirname(product_cache_path))
        puts "Downloading #{package_source} to #{product_cache_path}"
        open(package_source) { |url| File.open(product_cache_path, 'wb') { |f| f.write(url.read) } }
      end
    elsif !File.exist?(package_source)
      puts "ERROR: Package source #{package_source} does not exist."
      exit 1
    end
  end
end

#run_ctl(server, component, subcommand) ⇒ Object 



682
683
684
 
# File 'lib/dev-lxc/cluster.rb', line 682

def run_ctl(server, component, subcommand)
  server.run_command("#{component}-ctl #{subcommand}")
end

#up(server_name_regex = nil) ⇒ Object 



276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
 
# File 'lib/dev-lxc/cluster.rb', line 276

def up(server_name_regex=nil)
  abort_up = false
  configured_servers = Array.new
  servers = get_sorted_servers(server_name_regex)
  servers.each do |server|
    next if server.container.defined?
    if (@config['chef-server'][:frontends] && @config['chef-server'][:frontends].include?(server.name)) || server.name == @config['analytics'][:bootstrap_backend]
      if @config['chef-server'][:bootstrap_backend].nil?
        puts "ERROR: '#{server.name}' requires a Chef Server bootstrap backend to be configured first."
        abort_up = true
      elsif !get_server(@config['chef-server'][:bootstrap_backend]).container.defined? && servers.select { |s| s.name == @config['chef-server'][:bootstrap_backend] }.empty?
        puts "ERROR: '#{server.name}' requires '#{@config['chef-server'][:bootstrap_backend]}' to be configured first."
        abort_up = true
      end
    end
    if @config['chef-server'][:bootstrap_backend] && @server_configs[server.name][:server_type] == 'supermarket'
      if !get_server(@config['chef-server'][:bootstrap_backend]).container.defined? && servers.select { |s| s.name == @config['chef-server'][:bootstrap_backend] }.empty?
        puts "ERROR: '#{server.name}' requires '#{@config['chef-server'][:bootstrap_backend]}' to be configured first."
        abort_up = true
      end
    end
    if @config['analytics'][:frontends] && @config['analytics'][:frontends].include?(server.name)
      if @config['analytics'][:bootstrap_backend].nil?
        puts "ERROR: '#{server.name}' requires an Analytics Server bootstrap backend to be configured first."
        abort_up = true
      elsif !get_server(@config['analytics'][:bootstrap_backend]).container.defined? && servers.select { |s| s.name == @config['analytics'][:bootstrap_backend] }.empty?
        puts "ERROR: '#{server.name}' requires '#{@config['analytics'][:bootstrap_backend]}' to be configured first."
        abort_up = true
      end
    end
    if @config['chef-backend'][:frontends] && @config['chef-backend'][:frontends].include?(server.name) && server.name != @config['chef-backend'][:bootstrap_frontend]
      if @config['chef-backend'][:bootstrap_frontend].nil?
        puts "ERROR: '#{server.name}' requires a Chef Server bootstrap frontend to be configured first."
        abort_up = true
      elsif !get_server(@config['chef-backend'][:bootstrap_frontend]).container.defined? && servers.select { |s| s.name == @config['chef-backend'][:bootstrap_frontend] }.empty?
        puts "ERROR: '#{server.name}' requires '#{@config['chef-backend'][:bootstrap_frontend]}' to be configured first."
        abort_up = true
      end
    end
    if server.name == @config['chef-backend'][:bootstrap_frontend]
      if (@config['chef-backend'][:backends].select { |s| get_server(s).container.running? }.length + servers.select { |s| @config['chef-backend'][:backends].include?(s.name) }.length) < 2
        puts "ERROR: '#{server.name}' requires at least two nodes in the backend cluster to be running first."
        abort_up = true
      end
    end
    if @config['chef-backend'][:backends] && @config['chef-backend'][:backends].include?(server.name) && server.name != @config['chef-backend'][:leader_backend]
      if !get_server(@config['chef-backend'][:leader_backend]).container.running? && servers.select { |s| s.name == @config['chef-backend'][:leader_backend] }.empty?
        puts "ERROR: '#{server.name}' requires '#{@config['chef-backend'][:leader_backend]}' to be running first."
        abort_up = true
      end
    end
    if @server_configs[server.name][:server_type] == 'nodes'
      if @server_configs[server.name][:chef_server_url].nil? && @server_configs[server.name][:validation_client_name].nil? & @server_configs[server.name][:validation_key].nil?
        if @config['chef-server'][:bootstrap_backend] && !get_server(@config['chef-server'][:bootstrap_backend]).container.defined? && servers.select { |s| s.name == @config['chef-server'][:bootstrap_backend] }.empty?
          puts "ERROR: '#{server.name}' requires '#{@config['chef-server'][:bootstrap_backend]}' to be configured first."
          abort_up = true
        elsif @config['chef-backend'][:bootstrap_frontend] && !get_server(@config['chef-backend'][:bootstrap_frontend]).container.defined? && servers.select { |s| s.name == @config['chef-backend'][:bootstrap_frontend] }.empty?
          puts "ERROR: '#{server.name}' requires '#{@config['chef-backend'][:bootstrap_frontend]}' to be configured first."
          abort_up = true
        end
      end
    end
  end
  exit 1 if abort_up
  prep_product_cache(servers)
  servers.each do |server|
    clone_from_base_container(server) unless server.container.defined?
  end
  servers = get_sorted_servers(server_name_regex)
  servers.each do |server|
    install_products(server) unless @server_configs[server.name][:required_products].empty?
  end
  servers.each do |server|
    if server.snapshot_list.select { |sn| sn[2].start_with?("dev-lxc build: completed") }.empty?
      if server.name == @config["chef-backend"][:bootstrap_frontend]
        running_backends = Array.new
        @config["chef-backend"][:backends].reverse_each do |server_name|
          backend = get_server(server_name)
          if backend.container.defined? && backend.snapshot_list.select { |sn| sn[2].start_with?("dev-lxc build: backend cluster configured but frontend not bootstrapped") }.empty?
            if backend.container.running?
              running_backends << backend.name
              backend.stop
            end
            backend.snapshot("dev-lxc build: backend cluster configured but frontend not bootstrapped")
            snapshot = backend.snapshot_list.select { |sn| sn[2].start_with?("dev-lxc build: completed") }.first
            backend.snapshot_destroy(snapshot.first) if snapshot
          end
        end
        @config["chef-backend"][:backends].each do |server_name|
          if running_backends.include?(server_name)
            get_server(server_name).start
            configured_servers << server_name unless configured_servers.include?(server_name)
          end
        end
      end
      configure_products(server)
      configured_servers << server.name
    end
    server.start unless server.container.running?
  end
  configured_servers.reverse_each do |server_name|
    server = get_server(server_name)
    server.stop if server.container.running?
    server.snapshot("dev-lxc build: completed")
  end
  configured_servers.each do |server_name|
    server = get_server(server_name)
    server.start if server.container.defined?
  end
end

#validate_cluster_config(cluster_config) ⇒ Object 



182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
 
# File 'lib/dev-lxc/cluster.rb', line 182

def validate_cluster_config(cluster_config)
  hostnames = Array.new
  mounts = Array.new
  base_container_names = Array.new
  ssh_keys = Array.new

  base_container_names << cluster_config['base_container'] unless cluster_config['base_container'].nil?
  mounts.concat(cluster_config['mounts']) unless cluster_config['mounts'].nil?
  ssh_keys.concat(cluster_config['ssh-keys']) unless cluster_config['ssh-keys'].nil?

  %w(adhoc analytics chef-backend chef-server compliance nodes supermarket).each do |server_type|
    unless cluster_config[server_type].nil?
      base_container_names << cluster_config[server_type]['base_container'] unless cluster_config[server_type]['base_container'].nil?
      hostnames << cluster_config[server_type]['api_fqdn'] unless cluster_config[server_type]['api_fqdn'].nil?
      hostnames << cluster_config[server_type]['analytics_fqdn'] unless cluster_config[server_type]['analytics_fqdn'].nil?
      hostnames.concat(cluster_config[server_type]['servers'].keys) unless cluster_config[server_type]['servers'].nil?
      mounts.concat(cluster_config[server_type]['mounts']) unless cluster_config[server_type]['mounts'].nil?
      ssh_keys.concat(cluster_config[server_type]['ssh-keys']) unless cluster_config[server_type]['ssh-keys'].nil?
    end
  end
  unless base_container_names.empty?
    base_container_names.each do |base_container_name|
      unless ::DevLXC::Container.new(base_container_name).defined?
        puts "ERROR: Base container #{base_container_name} does not exist."
        exit 1
      end
    end
  end
  unless hostnames.empty?
    hostnames.each do |hostname|
      unless hostname.end_with?(".lxc")
        puts "ERROR: Hostname #{hostname} does not end with '.lxc'."
        exit 1
      end
    end
  end
  unless mounts.empty?
    mounts.each do |mount|
      unless File.exists?(mount.split.first)
        puts "ERROR: Mount source #{mount.split.first} does not exist."
        exit 1
      end
    end
  end
  unless ssh_keys.empty?
    ssh_keys.each do |ssh_key|
      unless File.exists?(ssh_key)
        puts "ERROR: SSH key #{ssh_key} does not exist."
        exit 1
      end
    end
  end
end