check the master/slave status
pyh at mail.nsbeta.info
pyh at mail.nsbeta.info
Mon Jan 10 07:40:18 UTC 2011
pyh at mail.nsbeta.info writes:
> I wrote a nagios plugin for monitoring the status of master/slave DNS.
> Just to check if their serial number is the same. The script shows
> below,thanks for all your directions.
>
> #!/usr/bin/perl
> use strict;
> use Net::DNS;
> use Getopt::Std;
>
> my %opts;
> getopts('hm:s:z:', \%opts);
> if ($opts{'h'}) {
> usage();
> }
> my $master = $opts{'m'} || usage();
> my $slave = $opts{'s'} || usage();
> my $zone = $opts{'z'} || usage();
>
> my $s1 = qrsoa($master,$zone);
> my $s2 = qrsoa($slave,$zone);
>
> if ($s1 != -1 && $s1 == $s2) {
> print "OK\n";
> exit 0;
> } else {
> print "CRITICAL: zone game.yy.com sync error\n";
Sorry, here should be:
print "CRITICAL: zone $zone sync error\n";
game.yy.com is the special one of our zones.
> exit 2;
> }
>
>
> sub qrsoa {
> my $host = shift;
> my $zone = shift;
> my $res = Net::DNS::Resolver->new(nameservers => [$host]);
> my $query = $res->query($zone, "SOA");
> return $query ? ($query->answer)[0]->serial : -1;
> }
>
> sub usage {
> print <<EOF;
> Usage: $0 -m 8.8.8.8 -s 8.8.4.4 -z example.com
> -m master DNS ip or name
> -s slave DNS ip or name
> -z zone name
> -h show this help page
> EOF
> exit 0;
> }
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