#!/usr/bin/ruby
# Copyright 2006, 2012 Peter Palfrader
+# 2012 Uli Martens
#
# Permission is hereby granted, free of charge, to any person obtaining
# a copy of this software and associated documentation files (the
NAGIOS_STATUS = { :OK => 0, :WARNING => 1, :CRITICAL => 2, :UNKNOWN => -1 };
@verbose = 0;
@additional_nameservers = []
+@check_soa_nameservers = true;
def show_help(parser, code=0, io=STDOUT)
program_name = File.basename($0, '.*')
exit(code)
end
ARGV.options do |opts|
- opts.on_tail("-h", "--help" , "Display this help screen") { show_help(opts) }
- opts.on("-v", "--verbose" , String, "Be verbose") { @verbose += 1 }
- opts.on("-a", "--add=HOST" , String, "Also check SOA on <nameserver>") { |val| @additional_nameservers << val }
+ opts.on_tail("-h", "--help" , "Display this help screen") { show_help(opts) }
+ opts.on("-v", "--verbose" , String, "Be verbose") { @verbose += 1 }
+ opts.on("-a", "--add=HOST" , String, "Also check SOA on <nameserver>") { |val| @additional_nameservers << val }
+ opts.on("-n", "--no-soa-ns" , String, "Don't query SOA record for list of nameservers") { @check_soa_nameservers = false }
opts.parse!
end
show_help(ARGV.options, 1, STDERR) if ARGV.length == 0
+if @additional_nameservers.count <= 1 and not @check_soa_nameservers
+ program_name = File.basename($0, '.*')
+ STDERR.puts "#{program_name}: Only know about #{@additional_nameservers.count} nameserver(s) and --no-soa-ns specified. I want at least two."
+ exit(1)
+end
+
warnings = []
oks = []
dns = Resolv::DNS.new
ARGV.each{ |domain|
serial = []
- nameservers = dns.getresources(domain, Resolv::DNS::Resource::IN::NS)
- nameservernames = nameservers.collect{ |ns| ns.name.to_s }
nameserver_addresses = {}
- nameservernames.each do |nameserver|
- addrs = resolve_ns(dns, domain, nameserver)
- warnings << "Duplicate nameserver #{nameserver} for #{domain}" if nameserver_addresses[nameserver]
- nameserver_addresses[nameserver] = addrs
+ if @check_soa_nameservers
+ nameservers = dns.getresources(domain, Resolv::DNS::Resource::IN::NS)
+ nameservernames = nameservers.collect{ |ns| ns.name.to_s }
+ nameservernames.each do |nameserver|
+ addrs = resolve_ns(dns, domain, nameserver)
+ warnings << "Duplicate nameserver #{nameserver} for #{domain}" if nameserver_addresses[nameserver]
+ nameserver_addresses[nameserver] = addrs
+ end
end
@additional_nameservers.each do |ns|
begin