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contrib-munin/plugins/moblock/moblock_connections

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2007-11-15 22:55:32 +01:00
#!/usr/bin/env ruby
#
# Plugin to monitor the number of connections blocked by moblock.
#
# Requirements:
#
# Moblock up and running with generated log files going to /var/log/moblock
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#
# Parameters supported:
#
# config
# autoconf
#
# Configurable variables
#
# logfile - Override default moblock logfile
#
# Magic markers
#
#%# family=auto
#%# capabilities=autoconf
#
# Initialize vars
#
$logfile = ENV['logfile'] || "/var/log/moblock.log"
#
# Configure generated graph
#
def config
puts "graph_args --base 1000 -r --lower-limit 0"
puts "graph_title Moblock"
puts "graph_vlabel Blocked Connections"
puts "graph_category fw"
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puts "graph_info This graph shows the number of connections blocked by Moblock"
puts "blocked_in.label Blocked In"
puts "blocked_in.draw LINE1"
puts "blocked_in.info Number of blocked incoming connections"
puts "blocked_in.type GAUGE"
puts "blocked_out.label Blocked Out"
puts "blocked_out.draw LINE1"
puts "blocked_out.info Number of blocked outgoing connections"
puts "blocked_out.type GAUGE"
puts "blocked_total.label Total Blocked"
puts "blocked_total.draw LINE1"
puts "blocked_total.info Total Number of blocked connections"
puts "blocked_total.type GAUGE"
end
#
# Grep moblock logs for stats
#
def fetch(debug=false)
num_in = %x{cat #{$logfile} | grep --extended-regexp 'IN: ' | wc -l}
num_out = %x{cat #{$logfile} | grep --extended-regexp 'OUT: ' | wc -l}
num_total = num_in.to_i + num_out.to_i
puts "blocked_in.value #{num_in}"
puts "blocked_out.value #{num_out}"
puts "blocked_total.value #{num_total}"
end
#
# If moblock executable on path then allow autoconfiguration
#
def autoconf
moblock_path = %x{which moblock}
if moblock_path.index('moblock')
puts "yes"
else
puts "no"
end
end
#
# Handle command line args
#
case ARGV.first
when 'config'
config
when 'debug'
fetch true
when 'autoconf'
autoconf
else
fetch
end