[MySQL] Mysql-MHA高可用实验测试

grant replication slave on *.* to mharep@'192.168.1.%' identified by 'passwd';
flush privileges;
stop slave;
#设置复制权限帐号
GRANT ALL PRIVILEGES ON *.* TO 'mha_manager'@'192.168.1.%' IDENTIFIED BY '123456';
reset master;
show master status\G

grant replication slave on *.* to mharep@'192.168.1.%' identified by 'passwd';
GRANT ALL PRIVILEGES ON *.* TO 'mha_manager'@'192.168.1.%' IDENTIFIED BY '123456';
flush privileges;
reset master;
slave stop;
change master to MASTER_HOST='192.168.1.2', MASTER_PORT=3306,MASTER_USER='mharep', MASTER_PASSWORD='passwd',master_log_file='mysql-bin.000001', master_log_pos=107;
slave start;
show slave status\G;

reset master;
slave stop;
GRANT ALL PRIVILEGES ON *.* TO 'mha_manager'@'192.168.1.%' IDENTIFIED BY '123456';
flush privileges;
change master to MASTER_HOST='192.168.1.2', MASTER_PORT=3306,MASTER_USER='mharep', MASTER_PASSWORD='passwd',master_log_file='mysql-bin.000001', master_log_pos=107;
slave start;
show slave status\G;

ssh-keygen -t rsa
for i in db1 db2 db3;do ssh-copy-id -i ~/.ssh/id_rsa.pub root@$i;done

ssh-keygen -t rsa 
for i in manager db2 db3;do ssh-copy-id -i ~/.ssh/id_rsa.pub root@$i;done

wget https://downloads.mariadb.com/files/MHA/mha4mysql-manager-0.55-0.el6.noarch.rpm
wget https://downloads.mariadb.com/files/MHA/mha4mysql-node-0.54-0.el6.noarch.rpm

yum install perl cpan
yum install perl-DBD-MySQL perl-Config-Tiny perl-Log-Dispatch perl-Parallel-ForkManager

wget http://rpmfind.net/linux/dag/redhat/el6/en/x86_64/dag/RPMS/perl-Log-Dispatch-2.26-1.el6.rf.noarch.rpm
wget ftp://rpmfind.net/linux/dag/redhat/el6/en/x86_64/dag/RPMS/perl-Parallel-ForkManager-0.7.5-2.2.el6.rf.noarch.rpm
wget ftp://rpmfind.net/linux/dag/redhat/el6/en/x86_64/dag/RPMS/perl-Mail-Sender-0.8.16-1.el6.rf.noarch.rpm
wget ftp://rpmfind.net/linux/dag/redhat/el6/en/x86_64/dag/RPMS/perl-Mail-Sendmail-0.79-1.2.el6.rf.noarch.rpm

rpm -ivh perl-Mail-Sender-0.8.16-1.el6.rf.noarch.rpm 
rpm -ivh perl-Mail-Sendmail-0.79-1.2.el6.rf.noarch.rpm
yum localinstall perl-Log-Dispatch-2.26-1.el6.rf.noarch.rpm
yum localinstall perl-Parallel-ForkManager-0.7.5-2.2.el6.rf.noarch.rpm
yum localinstall mha4mysql-node-0.54-0.el6.noarch.rpm
yum localinstall mha4mysql-manager-0.55-0.el6.noarch.rpm

[root@manager ~]# masterha_<Tab>
masterha_check_repl     masterha_conf_host    masterha_master_switch
masterha_check_ssh    masterha_manager      masterha_secondary_check
masterha_check_status   masterha_master_monitor   masterha_stop
tar -xzf mha4mysql-manager-0.55.tar.gz  #
ls mha4mysql-manager-0.55/samples/conf  #大家了解mha自带的配置文件,可忽略
masterha_default.cnf  app1.cnf
mkdir -p /usr/local/mha/scripts
cp mha4mysql-manager-0.55/samples/scripts/* /usr/local/mha/scripts

[root@manager ~]# vim /usr/local/mha/mha.conf #根据自己的mysql配置改动
[server default]
user=mha_manager                #mha管理的用户名
password=123456
manager_workdir=/usr/local/mha
manager_log=/usr/local/mha/manager.log
remote_workdir=/usr/local/mha
ssh_user=root                #上面双机互信的用户
repl_user=mharep               #mysql复制(同步)的用户名
repl_password=passwd
ping_interval=1
 
#下面是mysql检测设置
secondary_check_script= masterha_secondary_check -s 192.168.1.2 -s 192.168.1.3 -s 192.168.1.4
#master_ip_failover_script=/usr/local/mha/scripts/master_ip_failover
#shutdown_script= /usr/local/mha/scripts/power_manager
report_script= /usr/local/mha/scripts/send_report
master_ip_online_change_script= /usr/local/mha/scripts/master_ip_online_change
 
[server1]
hostname=192.168.1.2   #写ip或者主机名都可以
ssh_port=22
master_binlog_dir=/var/mysql/log
candidate_master=1
[server2]
hostname=192.168.1.3
ssh_port=22
master_binlog_dir=/var/mysql/log
candidate_master=1
[server3]
hostname=192.168.1.4
ssh_port=22
master_binlog_dir=/var/mysql/log
no_master=1

wget ftp://rpmfind.net/linux/dag/redhat/el6/en/x86_64/extras/RPMS/perl-Net-Telnet-3.03-2.el6.rfx.noarch.rpm
yum localinstall perl-Net-Telnet-3.03-2.el6.rfx.noarch.rpm

[root@manager ~]# masterha_check_repl --conf=/usr/local/mha/mha.conf 
Thu Jan  8 18:05:40 2015 - [warning] Global configuration file /etc/masterha_default.cnf not found. Skipping.
Thu Jan  8 18:05:40 2015 - [info] Reading application default configurations from /usr/local/mha/mha.conf..
Thu Jan  8 18:05:40 2015 - [info] Reading server configurations from /usr/local/mha/mha.conf..
Thu Jan  8 18:05:40 2015 - [info] MHA::MasterMonitor version 0.55.
Thu Jan  8 18:05:40 2015 - [info] Dead Servers:
Thu Jan  8 18:05:40 2015 - [info] Alive Servers:
Thu Jan  8 18:05:40 2015 - [info]   192.168.1.2(192.168.1.2:3306)
Thu Jan  8 18:05:40 2015 - [info]   192.168.1.3(192.168.1.3:3306)
Thu Jan  8 18:05:40 2015 - [info]   192.168.1.4(192.168.1.4:3306)
Thu Jan  8 18:05:40 2015 - [info] Alive Slaves:
Thu Jan  8 18:05:40 2015 - [info]   192.168.1.3(192.168.1.3:3306)  Version=5.5.37-log (oldest major version between slaves) log-bin:enabled
Thu Jan  8 18:05:40 2015 - [info]   Replicating from 192.168.1.2(192.168.1.2:3306)
Thu Jan  8 18:05:40 2015 - [info]   Primary candidate for the new Master (candidate_master is set)
Thu
 Jan  8 18:05:40 2015 - [info]   192.168.1.4(192.168.1.4:3306)  
Version=5.5.37-log (oldest major version between slaves) log-bin:enabled
Thu Jan  8 18:05:40 2015 - [info]   Replicating from 192.168.1.2(192.168.1.2:3306)
Thu Jan  8 18:05:40 2015 - [info]   Not candidate for the new Master (no_master is set)
Thu Jan  8 18:05:40 2015 - [info] Current Alive Master: 192.168.1.2(192.168.1.2:3306)
Thu Jan  8 18:05:40 2015 - [info] Checking slave configurations..
Thu Jan  8 18:05:40 2015 - [info] Checking replication filtering settings..
Thu Jan  8 18:05:40 2015 - [info]  binlog_do_db= , binlog_ignore_db= 
Thu Jan  8 18:05:40 2015 - [info]  Replication filtering check ok.
Thu Jan  8 18:05:40 2015 - [info] Starting SSH connection tests..
Thu Jan  8 18:05:41 2015 - [info] All SSH connection tests passed successfully.
Thu Jan  8 18:05:41 2015 - [info] Checking MHA Node version..
Thu Jan  8 18:05:42 2015 - [info]  Version check ok.
Thu Jan  8 18:05:42 2015 - [info] Checking SSH publickey authentication settings on the current master..
Thu Jan  8 18:05:42 2015 - [info] HealthCheck: SSH to 192.168.1.2 is reachable.
Thu Jan  8 18:05:42 2015 - [info] Master MHA Node version is 0.54.
Thu Jan  8 18:05:42 2015 - [info] Checking recovery script configurations on the current master..
Thu
 Jan  8 18:05:42 2015 - [info]   Executing command: save_binary_logs 
--command=test --start_pos=4 --binlog_dir=/var/mysql/log 
--output_file=/usr/local/mha/save_binary_logs_test 
--manager_version=0.55 --start_file=mysql-bin.000002 
Thu Jan  8 18:05:42 2015 - [info]   Connecting to root@192.168.1.2(192.168.1.2).. 
  Creating /usr/local/mha if not exists..  ok.
  Checking output directory is accessible or not..
   ok.
  Binlog found at /var/mysql/log, up to mysql-bin.000002
Thu Jan  8 18:05:42 2015 - [info] Master setting check done.
Thu
 Jan  8 18:05:42 2015 - [info] Checking SSH publickey authentication and
 checking recovery script configurations on all alive slave servers..
Thu
 Jan  8 18:05:42 2015 - [info]   Executing command : 
apply_diff_relay_logs --command=test --slave_user='mha_manager' 
--slave_host=192.168.1.3 --slave_ip=192.168.1.3 --slave_port=3306 
--workdir=/usr/local/mha --target_version=5.5.37-log 
--manager_version=0.55 --relay_log_info=/var/mysql/data/relay-log.info  
--relay_dir=/var/mysql/data/  --slave_pass=xxx
Thu Jan  8 18:05:42 2015 - [info]   Connecting to root@192.168.1.3(192.168.1.3:22).. 
  Checking slave recovery environment settings..
  Opening /var/mysql/data/relay-log.info ... ok.
  Relay log found at /var/mysql/data, up to mysql-relay-bin.000007
  Temporary relay log file is /var/mysql/data/mysql-relay-bin.000007
  Testing mysql connection and privileges.. done.
  Testing mysqlbinlog output.. done.
  Cleaning up test file(s).. done.
Thu
 Jan  8 18:05:42 2015 - [info]   Executing command : 
apply_diff_relay_logs --command=test --slave_user='mha_manager' 
--slave_host=192.168.1.4 --slave_ip=192.168.1.4 --slave_port=3306 
--workdir=/usr/local/mha --target_version=5.5.37-log 
--manager_version=0.55 --relay_log_info=/var/mysql/data/relay-log.info  
--relay_dir=/var/mysql/data/  --slave_pass=xxx
Thu Jan  8 18:05:42 2015 - [info]   Connecting to root@192.168.1.4(192.168.1.4:22).. 
  Checking slave recovery environment settings..
  Opening /var/mysql/data/relay-log.info ... ok.
  Relay log found at /var/mysql/data, up to mysql-relay-bin.000006
  Temporary relay log file is /var/mysql/data/mysql-relay-bin.000006
  Testing mysql connection and privileges.. done.
  Testing mysqlbinlog output.. done.
  Cleaning up test file(s).. done.
Thu Jan  8 18:05:43 2015 - [info] Slaves settings check done.
Thu Jan  8 18:05:43 2015 - [info] 
192.168.1.2 (current master)
 +--192.168.1.3
 +--192.168.1.4
Thu Jan  8 18:05:43 2015 - [info] Checking replication health on 192.168.1.3..
Thu Jan  8 18:05:43 2015 - [info]  ok.
Thu Jan  8 18:05:43 2015 - [info] Checking replication health on 192.168.1.4..
Thu Jan  8 18:05:43 2015 - [info]  ok.
Thu Jan  8 18:05:43 2015 - [info] Checking master_ip_failover_script status:
Thu
 Jan  8 18:05:43 2015 - [info]   
/usr/local/mha/scripts/master_ip_failover --command=status 
--ssh_user=root --orig_master_host=192.168.1.2 
--orig_master_ip=192.168.1.2 --orig_master_port=3306
IN
 SCRIPT TEST====/sbin/ifconfig eth0:1 down==/sbin/ifconfig eth0:1 
192.168.1.100;/sbin/arping -I eth0 -c 3 -s 192.168.1.100 192.168.1.1 
>/dev/null 2>&1===
Checking the Status of the script.. OK 
Thu Jan  8 18:05:46 2015 - [info]  OK.
Thu Jan  8 18:05:46 2015 - [warning] shutdown_script is not defined.
Thu Jan  8 18:05:46 2015 - [info] Got exit code 0 (Not master dead).
MySQL Replication Health is OK.

#!/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 = '192.168.1.100'; # Virtual IP
my $gateway = '192.168.1.1'; #Gateway IP
my $interface = 'eth0';
my $key = "1";
my $ssh_start_vip = "/sbin/ifconfig $interface:$key $vip;/sbin/arping -I $interface -c 3 -s $vip $gateway >/dev/null 2>&1";
my $ssh_stop_vip = "/sbin/ifconfig $interface:$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 "\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 "Disabling the 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" ) {
# 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 "Enabling the VIP - $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 $ssh_user\@$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=port 
--new_master_host=host --new_master_ip=ip --new_master_port=port\n";
}