Module: Stack
- Defined in:
- lib/stack.rb
Constant Summary collapse
- Logger =
Logger.new(STDOUT)
- @@gemhome =
File.absolute_path(File.realpath(File.dirname(File.(__FILE__)) + '/..'))
Class Method Summary collapse
- .connect(config) ⇒ Object
- .delete_node(config, fqdn) ⇒ Object
- .deploy_all(config) ⇒ Object
- .find_file(config, filename) ⇒ Object
- .generate_hostnames(config) ⇒ Object
- .get_running(config) ⇒ Object
- .load_config(configfile, stack) ⇒ Object
- .populate_config(config) ⇒ Object
- .show_details(config) ⇒ Object
- .show_dns(config) ⇒ Object
- .show_running(config) ⇒ Object
- .update_dns(fqdn, ip_address, config) ⇒ Object
- .validate(config) ⇒ Object
Instance Method Summary collapse
Class Method Details
.connect(config) ⇒ Object
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# File 'lib/stack.rb', line 24 def Stack.connect(config) connection = Fog::Compute.new({ :provider => config[:provider], :aws_access_key_id => config[:aws_access_key_id], :aws_secret_access_key => config[:aws_secret_access_key], :region => config[:region] }) connection end |
.delete_node(config, fqdn) ⇒ Object
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# File 'lib/stack.rb', line 212 def Stack.delete_node(config, fqdn) running_instances = Stack.get_running(config) if running_instances[fqdn].nil? puts "ERROR: #{fqdn} isn't running!" exit else Stack.connect(config) pp running_instances[fqdn] running_instances[fqdn].destroy end end |
.deploy_all(config) ⇒ Object
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# File 'lib/stack.rb', line 67 def Stack.deploy_all(config) # generate the hostnames & details from the config & apply defaults where required Stack.populate_config(config) # create a connection connection = Stack.connect(config) running_instances = Stack.get_running(config) config[:roles].each do |role, role_details| hostname = role.to_s fqdn = role.to_s + '.' + config[:dns_domain] if !running_instances[fqdn].nil? Logger.info "Skipping creation od #{fqdn} instance as it already exists" server = running_instances[fqdn] else # Ubuntu 8.04/Hardy doesn't do full cloud-init, so we have to script setting the hostname libdir = File.realpath(@@gemhome + '/lib') bootstrap_abs = Stack.find_file(config, config[:node_details][fqdn][:bootstrap]) cloud_config_yaml_abs = Stack.find_file(config, config[:node_details][fqdn][:cloud_config_yaml]) if config[:mime_encode_user_data] Logger.debug "mime encoding user-data..." multipart_cmd = "#{libdir}/write-mime-multipart #{bootstrap_abs} #{cloud_config_yaml_abs}" user_data = `#{multipart_cmd}` else # Ubuntu Hardy seems to struggle with some mime-encoded user-data # so allow the user to forse submitting user-data un-mimed, # in which case we can only pass one file & it must be the bootstrap script Logger.debug "mime encoding user-data disabled, only sending the bootstrap script" user_data = File.read(bootstrap_abs) end user_data.gsub!(/rentpro-unconfigured/, hostname) user_data.gsub!(/rentpro-stage.local/, config[:dns_domain]) # pp multipart # puts "Bootstraping new instance - #{fqdn}, in #{config[:availability_zone]}, flavor #{config[:node_details][fqdn][:flavor_id]}, image_id #{config[:image_id]}" server = connection.servers.create({ :name => fqdn, :hostname => fqdn, :availability_zone => config[:availability_zone], :flavor_id => config[:node_details][fqdn][:flavor_id], :image_id => config[:image_id], :key_name => config[:keypair], :user_data => user_data, :tags => { 'Name' => fqdn }, }) print "Waiting for instance to be ready..." server.wait_for { ready? } puts "#{role.to_s} is booted, #{server.public_ip_address}/#{server.private_ip_address}" end if config[:maintain_dns] Logger.info "Updating DNS for #{fqdn}" # create/update the public & private DNS for this host Stack.update_dns(role.to_s + '-public.' + config[:dns_domain], server.public_ip_address, config) Stack.update_dns(role.to_s + '-private.' + config[:dns_domain], server.private_ip_address, config) # create the dns if (role_details[:publish_private_ip] == true && (!role_details[:publish_private_ip].nil?)) ip_address = server.private_ip_address else ip_address = server.public_ip_address end Stack.update_dns(fqdn, ip_address, config) # # is this a wildcard DNS host, then claim the *.domain.net if (role_details[:dns_wildcard] == true && (!role_details[:dns_wildcard].nil?)) wildcard = "*." + config[:dns_domain] Stack.update_dns(wildcard, ip_address, config) end end end end |
.find_file(config, filename) ⇒ Object
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# File 'lib/stack.rb', line 262 def Stack.find_file(config, filename) # find a file, using the standard path precedence # 1) cwd # 2) stackhome # 2) stackhome + find_file_paths # 3) gemhome/lib if filename.nil? || filename.empty? raise ArgumentError end dirs = [ '.' ] # current directory dirs.push(config[:stackhome]) config[:find_file_paths].each { |fp| dirs.push(File.join(config[:stackhome], fp)) } dirs.push(File.join(@@gemhome, 'lib')) dirs.push('') # find absolute paths dirs.flatten! Logger.debug "find_file, looking for #{filename} in #{dirs}" filename_fqp = '' dirs.each do |dir| fqp = File.join(dir, filename) Logger.debug "find_file: checking #{fqp}" if File.file?(fqp) Logger.debug "find_file: found #{fqp}!" filename_fqp = File.(fqp) end end if filename_fqp.empty? Logger.warn "couldn't find #{filename} in #{dirs}" filename_fqp = nil end filename_fqp end |
.generate_hostnames(config) ⇒ Object
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# File 'lib/stack.rb', line 58 def Stack.generate_hostnames(config) stack_hostnames = Array.new config[:roles].each do |role, role_details| fqdn = role.to_s + '.' + config[:dns_domain] stack_hostnames << fqdn end stack_hostnames end |
.get_running(config) ⇒ Object
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# File 'lib/stack.rb', line 183 def Stack.get_running(config) # create a connection connection = Stack.connect(config) # generate all the names that this stack will use stack_hostnames = Stack.generate_hostnames(config) # Amazon EC2, use the tags hash to find hostnames running_instances = Hash.new connection.servers.each do |instance| # pp instance if (!instance.['Name'].nil? && instance.state != 'terminated' && instance.state != 'shutting-down') hostname = instance.['Name'] if stack_hostnames.include?(hostname) running_instances[hostname] = instance end end end running_instances end |
.load_config(configfile, stack) ⇒ Object
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# File 'lib/stack.rb', line 15 def Stack.load_config(configfile, stack) config_raw = File.read(configfile) eval(config_raw) config = StackConfig::Stacks[stack] config[:stackhome] = File.dirname(File.(configfile)) config end |
.populate_config(config) ⇒ Object
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# File 'lib/stack.rb', line 32 def Stack.populate_config(config) config[:find_file_paths] = Array.new if config[:find_file_paths].nil? config[:mime_encode_user_data] = true if config[:mime_encode_user_data].nil? config[:maintain_dns] = true if config[:maintain_dns].nil? # build out the full config for each node, supplying defaults from the # global config if explicitly supplied config[:node_details] = Hash.new if config[:node_details].nil? config[:roles].each do |role, role_details| fqdn = role.to_s + '.' + config[:dns_domain] config[:node_details][fqdn] = { # set the node details from the role, if not specified in the role, use the config global # (takes advantage of left to right evaluation of ||) :flavor_id => (role_details[:flavor_id] || config[:flavor_id]), :count => (role_details[:count] || 1), :publish_private_ip => (role_details[:publish_private_ip] || false), :dns_wildcard => (role_details[:dns_wildcard] || false), :bootstrap => (role_details[:bootstrap] || 'user-data.sh'), :cloud_config_yaml => (role_details[:cloud_config_yaml] || 'cloud-init.yaml'), } end end |
.show_details(config) ⇒ Object
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# File 'lib/stack.rb', line 224 def Stack.show_details(config) # create a connection connection = Stack.connect(config) pp connection.describe_regions pp connection.describe_availability_zones pp connection.servers Stack.populate_config(config) pp config[:node_details] end |
.show_dns(config) ⇒ Object
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# File 'lib/stack.rb', line 166 def Stack.show_dns(config) # now register it in DNS dns = Fog::DNS.new({ :provider => config[:provider], :aws_access_key_id => config[:aws_access_key_id], :aws_secret_access_key => config[:aws_secret_access_key] }) zone = dns.zones.get(config[:dns_id]) if zone.records.empty? puts "No DNS records found in #{config[:dns_domain]}" else printf("%40s %20s %5s %5s\n", 'fqdn', 'value', 'type', 'ttl') zone.records.each do |record| printf("%40s %20s %5s %5d\n", record.name, record.value, record.type, record.ttl) end end end |
.show_running(config) ⇒ Object
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# File 'lib/stack.rb', line 204 def Stack.show_running(config) running_instances = Stack.get_running(config) running_instances.each do |instance, instance_details| # display some details puts "#{instance} id=#{instance_details.id} flavor_id=#{instance_details.flavor_id} public_ip=#{instance_details.public_ip_address} private_ip=#{instance_details.private_ip_address}" end end |
.update_dns(fqdn, ip_address, config) ⇒ Object
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# File 'lib/stack.rb', line 147 def Stack.update_dns(fqdn, ip_address, config) # now register it in DNS dns = Fog::DNS.new({ :provider => config[:provider], :aws_access_key_id => config[:aws_access_key_id], :aws_secret_access_key => config[:aws_secret_access_key] }) dns.get_hosted_zone(config[:dns_id]) bmtw = dns.zones.get(config[:dns_id]) record = bmtw.records.get(fqdn) if record Logger.info "Updating #{fqdn} with #{ip_address}" record.modify(:value => ip_address) if record else Logger.info "Creating #{fqdn} with #{ip_address}" bmtw.records.create(:value => ip_address, :name => fqdn, :type => 'A') end end |
Instance Method Details
#shutdown_all(config) ⇒ Object
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# File 'lib/stack.rb', line 245 def shutdown_all(config) # shutdown all instances connection.servers.select do |server| puts "Running server:" # pp server # server.ready? && server.destroy end end |
#upload_keys(config) ⇒ Object
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# File 'lib/stack.rb', line 237 def upload_keys(config) if (key_pair = connection.key_pairs.get(config[:keypair]).nil?) key_pair = connection.key_pairs.create( :name => config[:keypair], :public_key => File.read("rentpro-deploy.pub") ) else puts "#{config[:keypair]} key_pair already exists" end end |