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#! /usr/bin/env ruby
#
# check-postgres-alive
#
# DESCRIPTION:
#
# This plugin attempts to login to postgres with provided credentials.
#
# OUTPUT:
# plain text
#
# PLATFORMS:
# Linux
#
# DEPENDENCIES:
# gem: sensu-plugin
# gem: pg
#
# USAGE:
# ./check-postgres-alive.rb -u db_user -p db_pass -h db_host -d db
#
# NOTES:
#
# LICENSE:
# Copyright (c) 2012 Lewis Preson & Tom Bassindale
# Released under the same terms as Sensu (the MIT license); see LICENSE
# for details.
#
require 'sensu-plugins-postgres/pgpass'
require 'sensu-plugin/check/cli'
require 'pg'
class CheckPostgres < Sensu::Plugin::Check::CLI
option :pgpass,
description: 'Pgpass file',
short: '-f FILE',
long: '--pgpass',
default: ENV['PGPASSFILE'] || "#{ENV['HOME']}/.pgpass"
option :user,
description: 'Postgres User',
short: '-u USER',
long: '--user USER'
option :password,
description: 'Postgres Password',
short: '-p PASS',
long: '--password PASS'
option :hostname,
description: 'Hostname to login to',
short: '-h HOST',
long: '--hostname HOST'
option :database,
description: 'Database schema to connect to',
short: '-d DATABASE',
long: '--database DATABASE'
option :port,
description: 'Database port',
short: '-P PORT',
long: '--port PORT'
option :timeout,
description: 'Connection timeout (seconds)',
short: '-T TIMEOUT',
long: '--timeout TIMEOUT',
default: nil
include Pgpass
def run
pgpass
con = PG.connect(host: config[:hostname],
dbname: config[:database],
user: config[:user],
password: config[:password],
port: config[:port],
connect_timeout: config[:timeout])
res = con.exec('select version();')
info = res.first
ok "Server version: #{info}"
rescue PG::Error => e
critical "Error message: #{e.error.split("\n").first}"
ensure
con.close if con
end
end