Class: AWS::Autoscale
- Inherits:
-
Object
- Object
- AWS::Autoscale
- Includes:
- Utils
- Defined in:
- lib/conan/cloud/aws/autoscale.rb
Instance Attribute Summary collapse
-
#application ⇒ Object
Returns the value of attribute application.
-
#autoscale_config ⇒ Object
Returns the value of attribute autoscale_config.
-
#stage ⇒ Object
Returns the value of attribute stage.
Instance Method Summary collapse
- #configure_autoscale ⇒ Object
- #create_ami_from_server(server_name, region, image_description = nil) ⇒ Object
- #create_launch_config(name, config = {}) ⇒ Object
-
#initialize(stage = 'production', autoscale_config = {}, application = nil) ⇒ Autoscale
constructor
A new instance of Autoscale.
- #update_autoscale ⇒ Object
Methods included from Utils
#all_availability_zones, #all_regions, #default_availability_zone, #default_image_id, #ec2_name_tag, #elasticache_name_tag, #find_server_by_name, #list_stage_servers, #rds_name_tag
Constructor Details
#initialize(stage = 'production', autoscale_config = {}, application = nil) ⇒ Autoscale
Returns a new instance of Autoscale.
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# File 'lib/conan/cloud/aws/autoscale.rb', line 13 def initialize(stage = 'production', autoscale_config = {}, application = nil) @autoscale_config = autoscale_config @stage = stage @application = application end |
Instance Attribute Details
#application ⇒ Object
Returns the value of attribute application.
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# File 'lib/conan/cloud/aws/autoscale.rb', line 11 def application @application end |
#autoscale_config ⇒ Object
Returns the value of attribute autoscale_config.
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# File 'lib/conan/cloud/aws/autoscale.rb', line 11 def autoscale_config @autoscale_config end |
#stage ⇒ Object
Returns the value of attribute stage.
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# File 'lib/conan/cloud/aws/autoscale.rb', line 11 def stage @stage end |
Instance Method Details
#configure_autoscale ⇒ Object
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# File 'lib/conan/cloud/aws/autoscale.rb', line 91 def configure_autoscale end |
#create_ami_from_server(server_name, region, image_description = nil) ⇒ Object
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# File 'lib/conan/cloud/aws/autoscale.rb', line 19 def create_ami_from_server(server_name, region, image_description = nil) image_name = "#{server_name}-image-#{Time.now.strftime('%Y%m%d%H%M')}" if image_name.nil? image_description = "Image of #{server_name} created at #{DateTime.now} by conan" server_to_image = find_server_by_name(server_name, region) raise "Server #{server_name} in #{region} does not exist" if server_to_image.nil? compute = Fog::Compute.new(:provider => :aws, :region => region) puts "Creating image #{image_name} from server #{server_name}" ami_request = compute.create_image(server_to_image.id, image_name, image_description) image_id = ami_request.body["imageId"] pending = true image = nil puts "Waiting for #{image_id} to become available" while pending sleep 10 image = compute.images.get(image_id) pending = image.state == "pending" end raise "Image creation failed" if image.state == 'failed' image_id end |
#create_launch_config(name, config = {}) ⇒ Object
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# File 'lib/conan/cloud/aws/autoscale.rb', line 46 def create_launch_config(name, config = {}) new_conf = config.inject({}){|memo,(k,v)| memo[k.to_sym] = v; memo} region = new_conf[:region] || "us-east-1" compute = Fog::Compute.new(:provider => :aws, :region => region) params = {} params['KeyName'] = new_conf[:key_name] || compute.key_pairs.all.first.name if new_conf[:security_groups] and new_conf[:security_groups].size > 0 params['SecurityGroups'] = new_conf[:security_groups].collect { |g| "#{stage}-#{g}" } else params['SecurityGroups'] = ["#{stage}-default"] end instance_type = new_conf.delete(:instance_type) || "m1.small" if new_conf[:server_to_image].nil? if new_conf[:image_id].nil? image_id = default_image_id(region, instance_type, new_conf[:root_device_type]) else image_id = new_conf[:image_id] end else image_id = create_ami_from_server(new_conf[:server_to_image], region) end autoscale = Fog::AWS::AutoScaling.new(:region => region) #need to create new launchconfiugrations with unique names #because you can't modify them and you can't delete them if they are attached #to an autoscale group id = "#{ec2_name_tag(name)}-#{Time.now.strftime('%Y%m%d%H%M')}" puts "Creating Autoscale Launch Configuration #{id}" lc = autoscale.configurations.connection.create_launch_configuration(image_id, instance_type, id, params) new_conf[:autoscale_groups].each do |group_name| asg = autoscale.groups.get(group_name) puts "Setting Autoscale Group #{group_name} to use Launch Configration #{id}" asg.connection.update_auto_scaling_group(group_name, {"LaunchConfigurationName" => id}) end unless new_conf[:autoscale_groups].nil? end |
#update_autoscale ⇒ Object
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# File 'lib/conan/cloud/aws/autoscale.rb', line 94 def update_autoscale autoscale_config.each do |type, resources| case type when "launch-config" resources.each do |name, conf| create_launch_config(name, conf) end end end end |