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  • MHA 自动切换脚本

    [root@pxc2 ~]# cat /root/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 = '192.168.56.100/24';
    my $key = '0';
    my $ssh_start_vip = "/sbin/ifconfig eth0:$key $vip";
    my $ssh_stop_vip = "/sbin/ifconfig eth0:$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 ";
    }

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  • 原文地址:https://www.cnblogs.com/vzhangxk/p/13207267.html
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