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Contents
# frozen_string_literal: true
require 'riemann/tools'
# Checks for open tcp ports.
# (c) Max Voit 2017
module Riemann
module Tools
class Portcheck
include Riemann::Tools
require 'socket'
opt :hostname, 'Host, defaults to localhost', default: `hostname`.chomp
opt :ports, "List of ports to check, e.g. '-r 80 443'", type: :ints
def initialize
@hostname = opts.fetch(:hostname)
@ports = opts.fetch(:ports)
end
def tick
@ports.each do |thisport|
# try opening tcp connection with 5s timeout;
# if this fails, the port is considered closed
portopen = begin
Socket.tcp(@hostname, thisport, connect_timeout: 5) { true }
rescue StandardError
false
end
state = if portopen
'ok'
else
'critical'
end
report(
host: @hostname.to_s,
service: "port #{thisport}",
state: state.to_s,
tags: ['portcheck'],
)
end
end
end
end
end
Version data entries
13 entries across 13 versions & 1 rubygems