master_ip_failover

!/usr/bin/env perl

use strict;
use warnings FATAL => 'all';

use Getopt::Long;

my (
$command, $ssh_user, $orig_master_host, $orig_master_ip,
$orig_master_port, $new_master_host, $new_master_ip, $new_master_port
);

my $vip = '192.168.142.10';
my $key = '0';
my $ssh_start_vip = "ifconfig ens33:$key $vip netmask 255.255.255.0 up";
my $ssh_stop_vip = "/sbin/ifconfig ens33:$key down";

GetOptions(
'command=s' => $command,
'ssh_user=s' => $ssh_user,
'orig_master_host=s' => $orig_master_host,
'orig_master_ip=s' => $orig_master_ip,
'orig_master_port=i' => $orig_master_port,
'new_master_host=s' => $new_master_host,
'new_master_ip=s' => $new_master_ip,
'new_master_port=i' => $new_master_port,
);

exit &main();

sub main {

print "

IN SCRIPT TEST====$ssh_stop_vip==$ssh_start_vip===

";

if ( $command eq "stop" || $command eq "stopssh" ) {

    my $exit_code = 1;
    eval {
        print "Disabling the VIP on old master: $orig_master_host 
";
        &stop_vip();
        $exit_code = 0;
    };
    if ($@) {
        warn "Got Error: $@
";
        exit $exit_code;
    }
    exit $exit_code;
}
elsif ( $command eq "start" ) {

    my $exit_code = 10;
    eval {
        print "Enabling the VIP - $vip on the new master - $new_master_host 
";
        &start_vip();
        $exit_code = 0;
    };
    if ($@) {
        warn $@;
        exit $exit_code;
    }
    exit $exit_code;
}
elsif ( $command eq "status" ) {
    print "Checking the Status of the script.. OK 
";
    exit 0;
}
else {
    &usage();
    exit 1;
}

}

sub start_vip() {
ssh $ssh_user@$new_master_host " $ssh_start_vip ";
}
sub stop_vip() {
return 0 unless ($ssh_user);
ssh $ssh_user@$orig_master_host " $ssh_stop_vip ";
}

sub usage {
print
"Usage: master_ip_failover --command=start|stop|stopssh|status --orig_master_host=host --orig_master_ip=ip --orig_master_port=port --new_master_host=host --new_master_ip=ip --new_master_port=port ";
}