Apache のプロセス数をリアルタイムに関しするヤツ

apache_watcher.rb

#!/usr/bin/env ruby
HOSTS = [] # 対象ホスト名を配列で指定
TIME_SIZE = 19
SIZE  = 15

num = 0
loop do
  if num == 0 then
    print "|" + (" " * TIME_SIZE)
    print "|"
    HOSTS.each do |host|
      print((host).ljust(SIZE - 1) + "|")
    end

    puts
  end

  print "|" + Time.now.strftime("%Y-%m-%d %H:%M:%S").ljust(TIME_SIZE)
  print "|"
  HOSTS.each do |host|
    print((`ssh #{host} ps aux | grep httpd | grep -v grep | wc -l`.chop + "|").rjust(SIZE))
  end

  puts

  num +=1
  num = 0 if num >= 5

  sleep 10
end