Delete all cloudwatch alarms with insufficient data

delete_cloudwatch_alarms.rb

require 'aws-sdk'

@client = Aws::CloudWatch::Client.new(region: 'us-east-1')

def cloudwatch_alarms(token=nil)
  return @client.describe_alarms({
    state_value: "INSUFFICIENT_DATA",
    next_token: token
  })
end

def delete(token=nil)
  resp = cloudwatch_alarms(token)
  alarm_names = []
  resp.metric_alarms.each do |alarm|
    alarm_names << alarm.alarm_name
  end
  res = @client.delete_alarms({
    alarm_names: alarm_names,
  })
  delete(resp.next_token)
end

delete()