mha的故障切换脚本和在线切换脚本

mha的在线切换脚本

#/bin/bash  
source /root/.bash_profile  

vip=`echo '192.168.10.53/24'`  # Virtual IP  
key=`echo '1'`  

command=`echo "$1" | awk -F = '{print $2}'`  
orig_master_host=`echo "$2" | awk -F = '{print $2}'`  
new_master_host=`echo "$7" | awk -F = '{print $2}'`  
orig_master_ssh_user=`echo "${12}" | awk -F = '{print $2}'`  
new_master_ssh_user=`echo "${13}" | awk -F = '{print $2}'`  

stop_vip=`echo "ssh root@$orig_master_host /sbin/ifconfig  eth0:$key  down"`  
start_vip=`echo "ssh root@$new_master_host /sbin/ifconfig  eth0:$key  $vip"`  

if [ $command = 'stop' ]  
   then  
   echo -e "\n\n\n***************************************************************\n"  
   echo -e "Disabling the VIP - $vip on old master: $orig_master_host\n"  
   $stop_vip  
   if [ $? -eq 0 ]  
      then  
      echo "Disabled the VIP successfully"  
   else  
      echo "Disabled the VIP failed"  
   fi  
   echo -e "***************************************************************\n\n\n\n"  
fi  

if [ $command = 'start' -o $command = 'status' ]  
   then  
   echo -e "\n\n\n***************************************************************\n"  
   echo -e "Enabling the VIP - $vip on new master: $new_master_host \n"  
   $start_vip  
   if [ $? -eq 0 ]  
      then  
      echo "Enabled the VIP successfully"  
   else  
      echo "Enabled the VIP failed"  
   fi  
   echo -e "***************************************************************\n\n\n\n"  
fi

mha的故障切换脚本

#!/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 = '192.168.10.53/24';  # Virtual IP  
my $key = "1";  
my $ssh_start_vip = "/sbin/ifconfig eth0:$key $vip";  
my $ssh_stop_vip = "/sbin/ifconfig eth0:$key down";  
my $exit_code = 0;  

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 "\n\nIN SCRIPT TEST====$ssh_stop_vip==$ssh_start_vip===\n\n";  

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

        # $orig_master_host, $orig_master_ip, $orig_master_port are passed.  
        # If you manage master ip address at global catalog database,  
        # invalidate orig_master_ip here.  
        my $exit_code = 1;  
        eval {  
            print "\n\n\n***************************************************************\n";  
            print "Disabling the VIP - $vip on old master: $orig_master_host\n";  
            print "***************************************************************\n\n\n\n";  
&stop_vip();  
            $exit_code = 0;  
        };  
        if ($@) {  
            warn "Got Error: $@\n";  
            exit $exit_code;  
        }  
        exit $exit_code;  
}  
elsif ( $command eq "start" ) {  

        # all arguments are passed.  
        # If you manage master ip address at global catalog database,  
        # activate new_master_ip here.  
        # You can also grant write access (create user, set read_only=0, etc) here.  
my $exit_code = 10;  
        eval {  
            print "\n\n\n***************************************************************\n";  
            print "Enabling the VIP - $vip on new master: $new_master_host \n";  
            print "***************************************************************\n\n\n\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 $ssh_user\@$orig_master_host \" $ssh_start_vip \"`;  
        exit 0;  
}  
else {  
&usage();  
        exit 1;  
}  
}  

# A simple system call that enable the VIP on the new master  
sub start_vip() {  
`ssh $ssh_user\@$new_master_host \" $ssh_start_vip \"`;  
}  
# A simple system call that disable the VIP on the old_master  
sub stop_vip() {  
`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=po  
rt –new_master_host=host –new_master_ip=ip –new_master_port=port\n";  
}