mirror of
https://github.com/munin-monitoring/contrib.git
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82 lines
2.5 KiB
Plaintext
82 lines
2.5 KiB
Plaintext
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#! /opt/csw/bin/ruby
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#
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# Wildcard-script to monitor network port usage using netstat. To monitor a
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# port, link port_<service> to this file. E.g. This plugin shall run by root user
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#
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# ln -s /usr/share/munin/node/plugins-auto/port_ /etc/munin/node.d/port_www
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#
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# ...will monitor www connections. Services are those listed in
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# /etc/services. Case service is not listed the numeric value shall be passed
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#
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# Author: Luis GarcÃa Acosta
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# V 1.0
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# Date Tue April 12 09:20:21 CET 2011
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require 'rubygems'
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require 'munin'
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SERVICE = $0.split( '_' ).last
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SERVICE_F = '/etc/services'
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PORT = /^[\d]+(\.[\d]+){0,1}$/ === SERVICE ? SERVICE : %x[grep #{SERVICE} #{SERVICE_F}].split( "\t\t" )[1].split( '/' )[0]
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class PortMonit < Munin::Plugin
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graph_attributes "#{SERVICE} port usage, known as #{PORT}",
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:category => 'Mobile Gateway',
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:info => 'This graph shows connection split by the state of the socket.',
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:vlabel => 'Current connections'
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declare_field :ESTABLISHED,
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:label => 'Established', :draw => :AREA,
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:type => :GAUGE, :min => 0
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declare_field :CLOSE_WAIT,
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:label => 'Waiting close', :draw => :STACK,
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:type => :GAUGE, :min => 0
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declare_field :TIME_WAIT,
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:label => 'Waiting after close', :draw => :STACK,
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:type => :GAUGE, :min => 0
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declare_field :CLOSING,
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:label => 'Closing', :draw => :STACK,
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:type => :GAUGE, :min => 0
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declare_field :LAST_ACK,
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:label => 'Waiting for acknowledgement', :draw => :STACK,
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:type => :GAUGE, :min => 0
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declare_field :FIN_WAIT_1,
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:label => 'Socket closed, connection shutting down', :draw => :STACK,
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:type => :GAUGE, :min => 0
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declare_field :FIN_WAIT_2,
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:label => 'Connection closed, Socket still waiting', :draw => :STACK,
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:type => :GAUGE, :min => 0
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def retrieve_values
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@_netstat = %x[netstat -n -P tcp | egrep "\.#{PORT} "].split( "\n" )
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{ :ESTABLISHED => count( @_netstat, 'ESTABLISHED' ),
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:CLOSE_WAIT => count( @_netstat, 'CLOSE_WAIT' ),
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:CLOSING => count( @_netstat, 'CLOSING' ),
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:LAST_ACK => count( @_netstat, 'LAST_ACK' ),
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:FIN_WAIT_1 => count( @_netstat, 'FIN_WAIT_1' ),
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:FIN_WAIT_2 => count( @_netstat, 'FIN_WAIT_2' ),
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:TIME_WAIT => count( @_netstat, 'TIME_WAIT' ) }
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end
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private
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def count( source, regex )
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@_result = 0
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source.each { |obj| @_result += 1 if obj.match( regex ) }
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return @_result
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end
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end
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PortMonit.new.run
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