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contrib-munin/plugins/unicorn/unicorn_status
dipohl e08a6448ce Category Tree: Reduce number of categories
sphinx -> search
unicorn -> webserver
moved some plugins to other dirs to get better seconde level heading
2017-02-23 02:22:08 +01:00

83 lines
2.0 KiB
Ruby
Executable File

#!/usr/bin/env ruby
#
# unicorn_status - A munin plugin for Linux to monitor unicorn processes
#
# Copyright (C) 2010 Shinji Furuya - shinji.furuya@gmail.com
# Licensed under the MIT license:
# http://www.opensource.org/licenses/mit-license.php
#
# set path to your rails app
RAILS_ROOT = "/path/to/rails/app"
# set name to your unicorn.pid
PID_NAME = "unicorn.pid"
module Munin
class UnicornStatus
attr_reader :pid_file
def initialize(rails_root, pid_name)
@pid_file = "#{rails_root}/tmp/pids/#{pid_name}"
end
def master_pid
File.read(pid_file).to_i
end
def worker_pids
result = []
ps_output = `ps w --ppid #{master_pid}`
ps_output.split("\n").each do |line|
chunks = line.strip.split(/\s+/, 5)
pid, pcmd = chunks[0], chunks[4]
next if pid !~ /\A\d+\z/ or pcmd !~ /worker/
result << pid.to_i
end
result
end
def worker_count
worker_pids.size
end
def idle_worker_count
result = 0
before_cpu = {}
worker_pids.each do |pid|
before_cpu[pid] = cpu_time(pid)
end
sleep 1
after_cpu = {}
worker_pids.each do |pid|
after_cpu[pid] = cpu_time(pid)
end
worker_pids.each do |pid|
result += 1 if after_cpu[pid] - before_cpu[pid] == 0
end
result
end
def cpu_time(pid)
usr, sys = `cat /proc/#{pid}/stat | awk '{print $14,$15 }'`.strip.split(/\s+/).collect { |i| i.to_i }
usr + sys
end
end
end
case ARGV[0]
when "autoconf"
puts "yes"
when "config"
puts "graph_title Unicorn [#{File.basename(__FILE__).gsub(/^unicorn_status_/, '')}] - Status"
puts "graph_args -l 0"
puts "graph_vlabel number of workers"
puts "graph_category webserver"
puts "total_worker.label total_workers"
puts "idle_worker.label idle_workers"
else
m = Munin::UnicornStatus.new(ENV['rails_root'] || RAILS_ROOT, ENV['pid_name'] || PID_NAME)
puts "total_worker.value #{m.worker_count}"
puts "idle_worker.value #{m.idle_worker_count}"
end