107 lines
2.7 KiB
Ruby
Executable File
107 lines
2.7 KiB
Ruby
Executable File
#!/usr/bin/env ruby
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=begin
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thin_threads -
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A munin plugin for Linux to monitor how many threads per thin process
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For Linux ONLY !
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DOES NOT WORK on OSX, Solaris or BSD.
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only linux, because this script relies on proc filesystem
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Original author:
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Frederico de Souza Araujo - fred.the.master@gmail.com
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http://www.frederico-araujo.com
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Usurper:
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Adam Michel - elfurbe@furbism.com
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http://www.furbism.com
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Originally based on:
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thin_process_memory -
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A munin plugin to monitor memory size of
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each individual thin process
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by Ben VandenBos and Avvo, Inc.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License version 2
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as published by the Free Software Foundation.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along
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with this program; if not, write to the Free Software Foundation, Inc.,
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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#%# family=auto
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#%# capabilities=autoconf
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=end
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module Munin
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class ThinThreads
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def run
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instances = get_pids
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instances.each do |instance|
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pid, port = instance.split('|')
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rss = get_threads(pid).to_i
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puts "thin_#{port}.value #{rss}"
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end
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end
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# only get threads count for each pid
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# Using Proc filesystem
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# ONLY LINUX! because relies on proc filesystem
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# TODO: make this work on OSX and Solaris,
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# so the whole unix gang is happy ;)
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def get_threads(pid)
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res = `grep "Threads" /proc/#{pid}/status | cut -d ":" -f2`.gsub(/\s+/, '')
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if res.match('cannot access')
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nil
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else
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res
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end
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end
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# fetch all pids that match thin
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def get_pids
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pids = `pgrep -f 'thin' -l | awk -F " " '{ if (substr( $4, 10, 4)>=1) print $1"|"substr( $4, 10, 4)}' | sort -t'|' -nk 2`.split(/\r?\n/)
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end
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def autoconf
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get_pids.length > 0
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end
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end
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end
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mpm = Munin::ThinThreads.new
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case ARGV[0]
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when 'config'
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puts 'graph_title Thin Threads'
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puts 'graph_vlabel Threads'
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puts 'graph_category webserver'
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puts 'graph_args -l 0'
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puts 'graph_scale yes'
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puts 'graph_info Tracks how many threads per thin processes'
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mpm.get_pids.each do |instance|
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pid, port = instance.split('|')
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puts "thin_#{port}.label thin_#{port}"
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puts "thin_#{port}.info Threads per Thin process"
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puts "thin_#{port}.type GAUGE"
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puts "thin_#{port}.min 0"
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end
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when 'autoconf'
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if mpm.autoconf
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puts 'yes'
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exit 0
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end
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puts 'no'
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exit 0
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else
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mpm.run
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end
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