cloud_watch_redis.rb

#!/usr/bin/env ruby

require 'socket'
require 'redis'
require 'aws-sdk'

ip_address = Socket.ip_address_list.select do |ip|
  ip.ipv4_private?
end.first.ip_address

keys = %w(used_memory used_memory_rss used_memory_peak used_memory_lua
     used_cpu_sys used_cpu_user used_cpu_sys_children used_cpu_user_children
     rdb_changes_since_last_save rdb_bgsave_in_progress rdb_last_save_time
     rdb_last_bgsave_status rdb_last_bgsave_time_sec rdb_current_bgsave_time_sec
     connected_clients total_connections_received total_commands_processed
     instantaneous_ops_per_sec rejected_connections expired_keys evicted_keys
     keyspace_hits keyspace_misses)

redis = Redis.new
info = redis.info

filter_info = info.select {|k,v| keys.include? k}

begin
    filter_info["rdb_last_bgsave_status"] =
      filter_info["rdb_last_bgsave_status"].upcase.split("").map do |s|
        s.ord.to_s
      end.join
rescue StandardError
    filter_info["rdb_last_bgsave_status"] = 100
end

complete_payload = filter_info.map do |key, value|
    {:metric_name => key, :value => value}
end

cloudwatch = Aws::CloudWatch::Client.new(region: 'us-east-1')
namespace = "redis/#{ip_address}"

complete_payload.each_slice(20) do |payload|
  cloudwatch.put_metric_data(
    :namespace => namespace,
    :metric_data => payload
  )
end