创建 Amazon EC2实例 - 适用于 Ruby 的 AWS 开发工具包
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创建 Amazon EC2实例

以下示例创建并标记 Amazon EC2 实例。

# Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved. # SPDX - License - Identifier: Apache - 2.0 require 'aws-sdk-ec2' require 'base64' # Creates and tags an Amazon Elastic Compute Cloud (Amazon EC2) instance. # # Prerequisites: # # - An EC2 key pair. # - If you want to run any commands on the instance after it starts, a # file containing those commands. # # @param ec2_resource [Aws::EC2::Resource] An initialized EC2 resource object. # @param image_id [String] The ID of the target Amazon Machine Image (AMI). # @param key_pair_name [String] The name of the existing EC2 key pair. # @param tag_key [String] The key portion of the tag for the instance. # @param tag_value [String] The value portion of the tag for the instance. # @param instance_type [String] The ID of the type of instance to create. # If not specified, the default value is 't2.micro'. # @param user_data_file [String] The path to the file containing any commands # to run on the instance after it starts. If not specified, the default # value is an empty string. # @return [Boolean] true if the instance was created and tagged; # otherwise, false. # @example # exit 1 unless instance_created?( # Aws::EC2::Resource.new(region: 'us-east-1'), # 'ami-0947d2ba12EXAMPLE', # 'my-key-pair', # 'my-key', # 'my-value', # 't2.micro', # 'my-user-data.txt' # ) def instance_created?( ec2_resource, image_id, key_pair_name, tag_key, tag_value, instance_type = 't2.micro', user_data_file = '' ) encoded_script = '' unless user_data_file == '' script = File.read(user_data_file) encoded_script = Base64.encode64(script) end instance = ec2_resource.create_instances( image_id: image_id, min_count: 1, max_count: 1, key_name: key_pair_name, instance_type: instance_type, user_data: encoded_script ) puts 'Creating instance...' # Check whether the new instance is in the "running" state. polls = 0 loop do polls += 1 response = ec2_resource.client.describe_instances( instance_ids: [ instance.first.id ] ) # Stop polling after 10 minutes (40 polls * 15 seconds per poll) if not running. break if response.reservations[0].instances[0].state.name == 'running' || polls > 40 sleep(15) end puts "Instance created with ID '#{instance.first.id}'." instance.batch_create_tags( tags: [ { key: tag_key, value: tag_value } ] ) puts 'Instance tagged.' return true rescue StandardError => e puts "Error creating or tagging instance: #{e.message}" return false end # Full example call: def run_me image_id = '' key_pair_name = '' tag_key = '' tag_value = '' instance_type = '' region = '' user_data_file = '' # Print usage information and then stop. if ARGV[0] == '--help' || ARGV[0] == '-h' puts 'Usage: ruby ec2-ruby-example-create-instance.rb ' \ 'IMAGE_ID KEY_PAIR_NAME TAG_KEY TAG_VALUE INSTANCE_TYPE ' \ 'REGION [USER_DATA_FILE]' puts 'Example: ruby ec2-ruby-example-create-instance.rb ' \ 'ami-0947d2ba12EXAMPLE my-key-pair my-key my-value t2.micro ' \ 'us-east-1 my-user-data.txt' exit 1 # If no values are specified at the command prompt, use these default values. elsif ARGV.count.zero? image_id = 'ami-0947d2ba12EXAMPLE' key_pair_name = 'my-key-pair' tag_key = 'my-key' tag_value = 'my-value' instance_type = 't2.micro' region = 'us-east-1' user_data_file = 'my-user-data.txt' # Otherwise, use the values as specified at the command prompt. else image_id = ARGV[0] key_pair_name = ARGV[1] tag_key = ARGV[2] tag_value = ARGV[3] instance_type = ARGV[4] region = ARGV[5] user_data_file = ARGV[6] if ARGV.count == 7 # If user data file specified. end ec2_resource = Aws::EC2::Resource.new(region: region) if instance_created?( ec2_resource, image_id, key_pair_name, tag_key, tag_value, instance_type, user_data_file ) puts 'Created and tagged instance.' else puts 'Could not create or tag instance.' end end run_me if $PROGRAM_NAME == __FILE__