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MHA故障更换脚本master_ip_failover结合VIP

发布时间:2022-03-28 14:11:38 所属栏目:编程 来源:互联网
导读:MHA故障切换脚本master_ip_failover结合VIP: #!/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_
       MHA故障切换脚本master_ip_failover结合VIP:
 
     #!/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,
     $new_master_user, $new_master_password, $app_vip, $netmask, $interface,
);
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,
    'new_master_user=s'     => $new_master_user,
    'new_master_password=s' => $new_master_password,
    'app_vip=s'            => $app_vip,
    'netmask=i'           => $netmask,
    'interface=s'         => $interface,
);
my $ssh_start_vip = "sudo ip addr add $app_vip dev $interface";
my $ssh_stop_vip = "sudo ip addr delete $app_vip dev $interface";
my $ssh_flush_arp = "sudo arping -c 4 -A -I $interface $app_vip";
exit &main();
sub main {
    print "nnIN SCRIPT TEST====$ssh_stop_vip==$ssh_start_vip===nn";
    if ( $command eq "stop" || $command eq "stopssh" ) {
        my $exit_code = 1;
        eval {
            print "Disabling the app_vip on old master: $orig_master_host n";
            &stop_vip();
            $exit_code = 0;
        };
        if ($@) {
            warn "Got Error: $@n";
            exit $exit_code;
        }
        exit $exit_code;
    }
    elsif ( $command eq "start" ) {
        my $exit_code = 10;
        eval {
            print "Enabling the app_vip  on the new master - $new_master_host n";
            &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 n";
        #`ssh $ssh_user@cluster1 " $ssh_start_vip "`;
        exit 0;
    }
    else {
        &usage();
        exit 1;
    }
}
# A simple system call that enable the app_vip on the new master
sub start_vip() {
    `ssh $ssh_user@$new_master_host " $ssh_start_vip "`;
    `ssh $ssh_user@$new_master_host " $ssh_flush_arp "`;
}
# A simple system call that disable the app_vip on the old_master
sub stop_vip() {
     return 0  unless  ($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=portn";
}

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