Created
July 6, 2020 09:42
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AWS Lambda Ruby 2.7 EC2 Instances Stop
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require 'aws-sdk' | |
require 'json' | |
# Environments: | |
# AWS_REGION = 'ap-northeast-1' as default | |
# TARGET_INSTANCE_IDS = 'i-1234567890abcdef,i-2234567890abcdef' like comma-separated string | |
AWS_REGION = ENV['AWS_REGION'] || 'ap-northeast-1' | |
def lambda_handler(event:, context:) | |
target_instance_ids = ENV['TARGET_INSTANCE_IDS'].split(',') | |
result_messages = [] | |
client = Aws::EC2::Client.new(region: AWS_REGION) | |
result_messages << "Describe Instances: #{target_instance_ids}" | |
client.describe_instances(instance_ids: target_instance_ids).reservations.each do |reservation| | |
next if reservation.instances.count < 1 | |
reservation.instances.each do |i| | |
if i.state.name == 'running' | |
result_messages << "#{i.instance_id} is running. stopping..." | |
client.stop_instances(instance_ids: [i.instance_id]) | |
result_messages << "done" | |
else | |
result_messages << "#{i.instance_id} is not running" | |
end | |
end | |
end | |
result_messages << "stop_instances Done" | |
client.wait_until(:instance_stopped, instance_ids: target_instance_ids) | |
result_messages << "instance_stopped confirmed" | |
{ statusCode: 200, body: result_messages.join("\n") } | |
end |
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