33 lines
939 B
Ruby
33 lines
939 B
Ruby
#!/usr/bin/env ruby
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require 'date'
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INTERVAL = 10
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hostname = `hostname`.strip
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loop do
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starts = nil
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ends = nil
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count = 0
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IO::readlines("/var/lib/dhcp/dhcpd.leases").each do |line|
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if line =~ /^lease/
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starts = nil
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ends = nil
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elsif line =~ /starts \d+ (.+?);/
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starts = DateTime.parse $1
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elsif line =~ /ends \d+ (.+?);/
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ends = DateTime.parse $1
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elsif line =~ /^\}/
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now = DateTime.now
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if starts and ends and
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starts <= now and ends >= now
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count += 1
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end
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end
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end
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puts "PUTVAL \"#{hostname}/exec-dhcpd/current_sessions-leases\" interval=#{INTERVAL} N:#{count}"
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sleep INTERVAL
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end
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