【MySql】——MHA+GTID+failover+binlog-server+Atlas

#系统版本
[root@mysql-db01 ~]# cat /etc/redhat-release
CentOS release 6.7 (Final)
#内核版本
[root@mysql-db01 ~]# uname -r
2.6.-.el6.x86_64
#IP地址
[root@mysql-db01 ~]# hostname -I
10.0.0.51

#系统版本
[root@mysql-db02 ~]# cat /etc/redhat-release
CentOS release 6.7 (Final)
#内核版本
[root@mysql-db02 ~]# uname -r
2.6.-.el6.x86_64
#IP地址
[root@mysql-db02 ~]# hostname -I
10.0.0.52

#系统版本
[root@mysql-db03 ~]# cat /etc/redhat-release
CentOS release 6.7 (Final)
#内核版本
[root@mysql-db03 ~]# uname -r
2.6.-.el6.x86_64
#IP地址
[root@mysql-db03 ~]# hostname -I
10.0.0.53

#创建安装包存放目录
[root@mysql-db01 ~]# mkdir /home/oldboy/tools -p
#进入目录
[root@mysql-db01 ~]# cd /home/oldboy/tools/
#上传mysql安装包（mysql-5.6.16-linux-glibc2.5-x86_64.tar.gz）
[root@mysql-db01 tools]# rz -be

#创建安装目录
[root@mysql-db01 tools]# mkdir /application
#解压mysql二进制包
[root@mysql-db01 tools]# tar xf mysql-5.6.-linux-glibc2.-x86_64.tar.gz
#移动安装包
[root@mysql-db01 tools]# mv mysql-5.6.-linux-glibc2.-x86_64 /application/mysql-5.6.
#做软链接
[root@mysql-db01 tools]# ln -s /application/mysql-5.6./ /application/mysql
#创建mysql用户
[root@mysql-db01 tools]# useradd mysql -s /sbin/nologin -M
#进入mysql初始化目录
[root@mysql-db01 tools]# cd /application/mysql/scripts/
#初始化mysql
[root@mysql-db01 scripts]# ./mysql_install_db \
--user=mysql \
--datadir=/application/mysql/data/ \
--basedir=/application/mysql/
#注解
--user： 指定mysql用户
--datadir：指定mysql数据存放目录
--basedir：指定mysql base目录
#拷贝mysql配置文件
[root@mysql-db01 ~]# \cp /application/mysql/support-files/my-default.cnf /etc/my.cnf
#拷贝mysql启动脚本
[root@mysql-db01 ~]# cp /application/mysql/support-files/mysql.server /etc/init.d/mysqld
#修改mysql默认安装目录（否则无法启动）
[root@mysql-db01 ~]# sed -i 's#/usr/local#/application#g' /etc/init.d/mysqld
[root@mysql-db01 ~]# sed -i 's#/usr/local#/application#g' /application/mysql/bin/mysqld_safe
#配置mysql环境变量
[root@mysql-db01 ~]# echo 'export PATH="/application/mysql/bin:$PATH"' >> /etc/profile.d/mysql.sh
#刷新环境变量
[root@mysql-db01 ~]# source /etc/profile

#加入开机自启
[root@mysql-db01 ~]# chkconfig mysqld on
#启动mysql
[root@mysql-db01 ~]# /etc/init.d/mysqld start
Starting MySQL........... SUCCESS! #启动成功

#配置mysql密码为oldboy123
[root@mysql-db01 ~]# mysqladmin -uroot password oldboy123

#编辑mysql配置文件
[root@mysql-db01 ~]# vim /etc/my.cnf
#在mysqld标签下配置
[mysqld]
#主库server-id为1，从库必须和主库不一样
server_id =
#开启binlog日志
log_bin=mysql-bin

#登录数据库
[root@mysql-db01 ~]# mysql -uroot -poldboy123
#创建rep用户
mysql> grant replication slave on *.* to rep@'10.0.0.%' identified by 'oldboy123';

#修改mysql-db02配置文件
[root@mysql-db02 ~]# vim /etc/my.cnf
#在mysqld标签下配置
[mysqld]
#主库server-id为1，从库必须和主库不一样
server_id =
#开启binlog日志
log_bin=mysql-bin
#重启mysql
[root@mysql-db02 ~]# /etc/init.d/mysqld restart #修改mysql-db03配置文件
[root@mysql-db03 ~]# vim /etc/my.cnf
#在mysqld标签下配置
[mysqld]
#主库server-id为1，从库必须和主库不一样
server_id =
#开启binlog日志
log_bin=mysql-bin
#重启mysql
[root@mysql-db03 ~]# /etc/init.d/mysqld restart

mysql> show master status;

#没开启之前先看一下GTID的状态
mysql> show global variables like '%gtid%';
+--------------------------+-------+
| Variable_name            | Value |
+--------------------------+-------+
| enforce_gtid_consistency | OFF   |
| gtid_executed            |       |
| gtid_mode                | OFF   |
| gtid_owned               |       |
| gtid_purged              |       |
+--------------------------+-------+
#编辑mysql配置文件（主库从库都需要修改）
[root@mysql-db01 ~]# vim /etc/my.cnf
#在[mysqld]标签下添加
[mysqld]
gtid_mode=ON
log_slave_updates
enforce_gtid_consistency
#重启数据库
[root@mysql-db01 ~]# /etc/init.d/mysqld restart
#检查GTID状态
mysql> show global variables like '%gtid%';

[root@mysql-db02 ~]# mysql -uroot -poldboy123
mysql> change master to
-> master_host='10.0.0.51',
-> master_user='rep',
-> master_password='oldboy123',
-> master_auto_position=;
ERROR (HY000): CHANGE MASTER TO MASTER_AUTO_POSITION = can only be executed when @@GLOBAL.GTID_MODE = ON.

#登录数据库
[root@mysql-db02 ~]# mysql -uroot -poldboy123
#配置复制主机信息
mysql> change master to
#主库IP
-> master_host='10.0.0.51',
#主库复制用户
-> master_user='rep',
#主库复制用户的密码
-> master_password='oldboy123',
#GTID位置点
-> master_auto_position=;
#开启slave
mysql> start slave;
#查看slave状态
mysql> show slave status\G
*************************** 1. row ***************************
               Slave_IO_State: Waiting for master to send event
                  Master_Host: 10.0.0.51 #主库IP
                  Master_User: rep
                  Master_Port: 3306 #主库端口
                Connect_Retry: 60
              Master_Log_File: mysql-bin.000004 #binlog名
          Read_Master_Log_Pos: 191
               Relay_Log_File: mysql-db02-relay-bin.000005
                Relay_Log_Pos: 401
        Relay_Master_Log_File: mysql-bin.000004
             Slave_IO_Running: Yes #IO线程状态
            Slave_SQL_Running: Yes #SQL线程状态
              Replicate_Do_DB:
          Replicate_Ignore_DB:
           Replicate_Do_Table:
       Replicate_Ignore_Table:
      Replicate_Wild_Do_Table:
  Replicate_Wild_Ignore_Table:
                   Last_Errno: 0
                   Last_Error:
                 Skip_Counter: 0
          Exec_Master_Log_Pos: 191
              Relay_Log_Space: 1883
              Until_Condition: None
               Until_Log_File:
                Until_Log_Pos: 0
           Master_SSL_Allowed: No
           Master_SSL_CA_File:
           Master_SSL_CA_Path:
              Master_SSL_Cert:
            Master_SSL_Cipher:
               Master_SSL_Key:
        Seconds_Behind_Master: 0
Master_SSL_Verify_Server_Cert: No
                Last_IO_Errno: 0
                Last_IO_Error:
               Last_SQL_Errno: 0
               Last_SQL_Error:
  Replicate_Ignore_Server_Ids:
             Master_Server_Id: 1
                  Master_UUID: 722cdde9-0272-11e7-a825-000c2951d7ad
             Master_Info_File: /application/mysql-5.6.16/data/master.info
                    SQL_Delay: 0
          SQL_Remaining_Delay: NULL
      Slave_SQL_Running_State: Slave has read all relay log; waiting for the slave I/O thread to update it
           Master_Retry_Count: 86400
                  Master_Bind:
      Last_IO_Error_Timestamp:
     Last_SQL_Error_Timestamp:
               Master_SSL_Crl:
           Master_SSL_Crlpath:
           Retrieved_Gtid_Set: 722cdde9-0272-11e7-a825-000c2951d7ad:1 #GTID号
            Executed_Gtid_Set: 722cdde9-0272-11e7-a825-000c2951d7ad:1 #GTID号
                Auto_Position: 1

#登录从库
[root@mysql-db02 ~]# mysql -uroot -poldboy123
#禁用自动删除relay log 功能
mysql> set global relay_log_purge = ;
#设置只读
mysql> set global read_only=;
#编辑配置文件
[root@mysql-db02 ~]# vim /etc/my.cnf
#在mysqld标签下添加
[mysqld]
#禁用自动删除relay log 永久生效
relay_log_purge =

#安装依赖包
[root@mysql-db01 ~]# yum install perl-DBD-MySQL -y
#进入安装包存放目录
[root@mysql-db01 ~]# cd /home/oldboy/tools/
#上传mha安装包
[root@mysql-db01 tools]# rz -be
mha4mysql-manager-0.56-.el6.noarch.rpm
mha4mysql-manager-0.56.tar.gz
mha4mysql-node-0.56-.el6.noarch.rpm
mha4mysql-node-0.56.tar.gz
#安装node包
[root@mysql-db01 tools]# rpm -ivh mha4mysql-node-0.56-.el6.noarch.rpm
#登录数据库
[root@mysql-db01 tools]# mysql -uroot -poldboy123
#添加mha管理账号
mysql> grant all privileges on *.* to mha@'10.0.0.%' identified by 'mha';
#查看是否添加成功
mysql> select user,host from mysql.user;
#主库上创建，从库会自动复制（在从库上查看）
mysql> select user,host from mysql.user;

#如果不创建命令软连接，检测mha复制情况的时候会报错
[root@mysql-db01 ~]# ln -s /application/mysql/bin/mysqlbinlog /usr/bin/mysqlbinlog
[root@mysql-db01 ~]# ln -s /application/mysql/bin/mysql /usr/bin/mysql

#使用epel源
[root@mysql-db03 ~]# wget -O /etc/yum.repos.d/epel.repo http://mirrors.aliyun.com/repo/epel-6.repo
#安装manager依赖包
[root@mysql-db03 ~]# yum install -y perl-Config-Tiny epel-release perl-Log-Dispatch perl-Parallel-ForkManager perl-Time-HiRes
#安装manager包
[root@mysql-db03 tools]# rpm -ivh mha4mysql-manager-0.56-.el6.noarch.rpm
Preparing... ########################################### [%]
:mha4mysql-manager ########################################### [%]

#创建配置文件目录
[root@mysql-db03 ~]# mkdir -p /etc/mha
#创建日志目录
[root@mysql-db03 ~]# mkdir -p /var/log/mha/app1
#编辑mha配置文件
[root@mysql-db03 ~]# vim /etc/mha/app1.cnf
[server default]
manager_log=/var/log/mha/app1/manager
manager_workdir=/var/log/mha/app1
master_binlog_dir=/application/mysql/data
user=mha
password=mha
ping_interval=
repl_password=oldboy123
repl_user=rep
ssh_user=root [server1]
hostname=10.0.0.51
port= [server2]
candidate_master=
check_repl_delay=
hostname=10.0.0.52
port= [server3]
hostname=10.0.0.53
port=

[server default]
#设置manager的工作目录
manager_workdir=/var/log/masterha/app1
#设置manager的日志
manager_log=/var/log/masterha/app1/manager.log
#设置master 保存binlog的位置，以便MHA可以找到master的日志，我这里的也就是mysql的数据目录
master_binlog_dir=/data/mysql
#设置自动failover时候的切换脚本
master_ip_failover_script= /usr/local/bin/master_ip_failover
#设置手动切换时候的切换脚本
master_ip_online_change_script= /usr/local/bin/master_ip_online_change
#设置mysql中root用户的密码，这个密码是前文中创建监控用户的那个密码
password=
#设置监控用户root
user=root
#设置监控主库，发送ping包的时间间隔，尝试三次没有回应的时候自动进行failover
ping_interval=
#设置远端mysql在发生切换时binlog的保存位置
remote_workdir=/tmp
#设置复制用户的密码
repl_password=
#设置复制环境中的复制用户名
repl_user=rep
#设置发生切换后发送的报警的脚本
report_script=/usr/local/send_report
#一旦MHA到server02的监控之间出现问题，MHA Manager将会尝试从server03登录到server02
secondary_check_script= /usr/local/bin/masterha_secondary_check -s server03 -s server02 --user=root --master_host=server02 --master_ip=192.168.0.50 --master_port=
#设置故障发生后关闭故障主机脚本（该脚本的主要作用是关闭主机放在发生脑裂,这里没有使用）
shutdown_script=""
#设置ssh的登录用户名
ssh_user=root [server1]
hostname=10.0.0.51
port= [server2]
hostname=10.0.0.52
port=
#设置为候选master，如果设置该参数以后，发生主从切换以后将会将此从库提升为主库，即使这个主库不是集群中事件最新的slave
candidate_master=
#默认情况下如果一个slave落后master 100M的relay logs的话，MHA将不会选择该slave作为一个新的master，因为对于这个slave的恢复需要花费很长时间，通过设置check_repl_delay=0,MHA触发切换在选择一个新的master的时候将会忽略复制延时，这个参数对于设置了candidate_master=1的主机非常有用，因为这个候选主在切换的过程中一定是新的master
check_repl_delay=

#创建秘钥对
[root@mysql-db01 ~]# ssh-keygen -t dsa -P '' -f ~/.ssh/id_dsa >/dev/null >&
#发送公钥，包括自己
[root@mysql-db01 ~]# ssh-copy-id -i /root/.ssh/id_dsa.pub root@10.0.0.51
[root@mysql-db01 ~]# ssh-copy-id -i /root/.ssh/id_dsa.pub root@10.0.0.52
[root@mysql-db01 ~]# ssh-copy-id -i /root/.ssh/id_dsa.pub root@10.0.0.53

#测试ssh
[root@mysql-db03 ~]# masterha_check_ssh --conf=/etc/mha/app1.cnf
#看到如下字样，则测试成功
Tue Mar :: - [info] All SSH connection tests passed successfully.
#测试复制
[root@mysql-db03 ~]# masterha_check_repl --conf=/etc/mha/app1.cnf
#看到如下字样，则测试成功
MySQL Replication Health is OK.

#启动
[root@mysql-db03 ~]# nohup masterha_manager --conf=/etc/mha/app1.cnf --remove_dead_master_conf --ignore_last_failover < /dev/null > /var/log/mha/app1/manager.log >& &

#登录数据库（db02）
[root@mysql-db02 ~]# mysql -uroot -poldboy123
#检查复制情况
mysql> show slave status\G
*************************** 1. row ***************************
               Slave_IO_State: Waiting for master to send event
                  Master_Host: 10.0.0.51
                  Master_User: rep
                  Master_Port: 3306
                Connect_Retry: 60
              Master_Log_File: mysql-bin.000004
          Read_Master_Log_Pos: 191
               Relay_Log_File: mysql-db02-relay-bin.000005
                Relay_Log_Pos: 401
        Relay_Master_Log_File: mysql-bin.000004
             Slave_IO_Running: Yes
            Slave_SQL_Running: Yes
              Replicate_Do_DB:
          Replicate_Ignore_DB:
           Replicate_Do_Table:
       Replicate_Ignore_Table:
      Replicate_Wild_Do_Table:
  Replicate_Wild_Ignore_Table:
                   Last_Errno: 0
                   Last_Error:
                 Skip_Counter: 0
          Exec_Master_Log_Pos: 191
              Relay_Log_Space: 1883
              Until_Condition: None
               Until_Log_File:
                Until_Log_Pos: 0
           Master_SSL_Allowed: No
           Master_SSL_CA_File:
           Master_SSL_CA_Path:
              Master_SSL_Cert:
            Master_SSL_Cipher:
               Master_SSL_Key:
        Seconds_Behind_Master: 0
Master_SSL_Verify_Server_Cert: No
                Last_IO_Errno: 0
                Last_IO_Error:
               Last_SQL_Errno: 0
               Last_SQL_Error:
  Replicate_Ignore_Server_Ids:
             Master_Server_Id: 1
                  Master_UUID: 722cdde9-0272-11e7-a825-000c2951d7ad
             Master_Info_File: /application/mysql-5.6.16/data/master.info
                    SQL_Delay: 0
          SQL_Remaining_Delay: NULL
      Slave_SQL_Running_State: Slave has read all relay log; waiting for the slave I/O thread to update it
           Master_Retry_Count: 86400
                  Master_Bind:
      Last_IO_Error_Timestamp:
     Last_SQL_Error_Timestamp:
               Master_SSL_Crl:
           Master_SSL_Crlpath:
           Retrieved_Gtid_Set: 722cdde9-0272-11e7-a825-000c2951d7ad:1
            Executed_Gtid_Set: 722cdde9-0272-11e7-a825-000c2951d7ad:1
                Auto_Position: 1
#登录数据库（db03）
[root@mysql-db03 ~]# mysql -uroot -poldboy123
#检查复制情况
mysql> show slave status\G
*************************** 1. row ***************************
               Slave_IO_State: Waiting for master to send event
                  Master_Host: 10.0.0.51
                  Master_User: rep
                  Master_Port: 3306
                Connect_Retry: 60
              Master_Log_File: mysql-bin.000004
          Read_Master_Log_Pos: 191
               Relay_Log_File: mysql-db02-relay-bin.000005
                Relay_Log_Pos: 401
        Relay_Master_Log_File: mysql-bin.000004
             Slave_IO_Running: Yes
            Slave_SQL_Running: Yes
              Replicate_Do_DB:
          Replicate_Ignore_DB:
           Replicate_Do_Table:
       Replicate_Ignore_Table:
      Replicate_Wild_Do_Table:
  Replicate_Wild_Ignore_Table:
                   Last_Errno: 0
                   Last_Error:
                 Skip_Counter: 0
          Exec_Master_Log_Pos: 191
              Relay_Log_Space: 1883
              Until_Condition: None
               Until_Log_File:
                Until_Log_Pos: 0
           Master_SSL_Allowed: No
           Master_SSL_CA_File:
           Master_SSL_CA_Path:
              Master_SSL_Cert:
            Master_SSL_Cipher:
               Master_SSL_Key:
        Seconds_Behind_Master: 0
Master_SSL_Verify_Server_Cert: No
                Last_IO_Errno: 0
                Last_IO_Error:
               Last_SQL_Errno: 0
               Last_SQL_Error:
  Replicate_Ignore_Server_Ids:
             Master_Server_Id: 1
                  Master_UUID: 722cdde9-0272-11e7-a825-000c2951d7ad
             Master_Info_File: /application/mysql-5.6.16/data/master.info
                    SQL_Delay: 0
          SQL_Remaining_Delay: NULL
      Slave_SQL_Running_State: Slave has read all relay log; waiting for the slave I/O thread to update it
           Master_Retry_Count: 86400
                  Master_Bind:
      Last_IO_Error_Timestamp:
     Last_SQL_Error_Timestamp:
               Master_SSL_Crl:
           Master_SSL_Crlpath:
           Retrieved_Gtid_Set: 722cdde9-0272-11e7-a825-000c2951d7ad:1
            Executed_Gtid_Set: 722cdde9-0272-11e7-a825-000c2951d7ad:1
#停掉主库
[root@mysql-db01 ~]# /etc/init.d/mysqld stop
Shutting down MySQL..... SUCCESS!
#登录数据库（db02）
[root@mysql-db02 ~]# mysql -uroot -poldboy123
#查看slave状态
mysql> show slave status\G
#db02的slave已经为空
Empty set (0.00 sec)
#登录数据库（db03）
[root@mysql-db03 ~]# mysql -uroot -poldboy123
#查看slave状态
mysql> show slave status\G

#编辑配置文件
[root@mysql-db03 ~]# vim /etc/mha/app1.cnf
#在[server default]标签下添加
[server default]
#使用MHA自带脚本
master_ip_failover_script=/usr/local/bin/master_ip_failover

#根据配置文件中脚本路径编辑
[root@mysql-db03 ~]# vim /etc/mha/master_ip_failover
#修改以下几行内容
my $vip = '10.0.0.55/24';
my $key = '';
my $ssh_start_vip = "/sbin/ifconfig eth0:$key $vip";
my $ssh_stop_vip = "/sbin/ifconfig eth0:$key down";
#添加执行权限，否则mha无法启动
[root@mysql-db03 ~]# chmod +x /etc/mha/master_ip_failover

#!/usr/bin/env perluse 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 = '10.0.0.55/24';
my $key = '';
my $ssh_start_vip = "/sbin/ifconfig eth1:$key $vip";
my $ssh_stop_vip = "/sbin/ifconfig eth1:$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" ) { my $exit_code = ;
eval {
print "Disabling the VIP on old master: $orig_master_host \n";
&stop_vip();
$exit_code = ;
};
if ($@) {
warn "Got Error: $@\n";
exit $exit_code;
}
exit $exit_code;
}
elsif ( $command eq "start" ) { my $exit_code = ;
eval {
print "Enabling the VIP - $vip on the new master - $new_master_host \n";
&start_vip();
$exit_code = ;
};
if ($@) {
warn $@;
exit $exit_code;
}
exit $exit_code;
}
elsif ( $command eq "status" ) {
print "Checking the Status of the script.. OK \n";
exit ;
}
else {
&usage();
exit ;
}
}sub start_vip() {
`ssh $ssh_user\@$new_master_host \" $ssh_start_vip \"`;
}
sub stop_vip() {
return unless ($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\n";
}

#绑定vip
[root@mysql-db01 ~]# ifconfig eth0: 10.0.0.55/
#查看vip
[root@mysql-db01 ~]# ip a |grep eth0
: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu qdisc pfifo_fast state UP qlen
inet 10.0.0.51/ brd 10.0.0.255 scope global eth0
inet 10.0.0.55/24 brd 10.0.0.255 scope global secondary eth0:0

#登录db02
[root@mysql-db02 ~]# mysql -uroot -poldboy123
#查看slave信息
mysql> show slave status\G

#停掉主库
[root@mysql-db01 ~]# /etc/init.d/mysqld stop
Shutting down MySQL..... SUCCESS!
#在db03上查看从库slave信息
mysql> show slave status\G

#在db01上查看vip信息
[root@mysql-db01 ~]# ip a |grep eth0
: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu qdisc pfifo_fast state UP qlen
inet 10.0.0.51/ brd 10.0.0.255 scope global eth0
#在db02上查看vip信息
[root@mysql-db02 ~]# ip a |grep eth0
: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu qdisc pfifo_fast state UP qlen
inet 10.0.0.52/ brd 10.0.0.255 scope global eth0
inet 10.0.0.55/24 brd 10.0.0.255 scope global secondary eth0:0

[root@mysql-db03 ~]# vim /etc/mha/app1.cnf
[binlog1]
no_master=
hostname=10.0.0.53
master_binlog_dir=/data/mysql/binlog/

#创建备份binlog目录
[root@mysql-db03 ~]# mkdir -p /data/mysql/binlog/
#进入该目录
[root@mysql-db03 ~]# cd /data/mysql/binlog/
#备份binlog
[root@mysql-db03 binlog]# mysqlbinlog -R --host=10.0.0.51 --user=mha --password=mha --raw --stop-never mysql-bin. &
#启动mha
[root@mysql-db03 binlog]# nohup masterha_manager --conf=/etc/mha/app1.cnf --remove_dead_master_conf --ignore_last_failover < /dev/null > /var/log/mha/app1/manager.log >& &

#查看binlog目录中的binlog
[root@mysql-db03 binlog]# ll
total
-rw-r--r-- root root Mar : mysql-bin.
#登录主库
[root@mysql-db01 ~]# mysql -uroot -poldboy123
#刷新binlog
mysql> flush logs;
#再次查看binlog目录
[root@mysql-db03 binlog]# ll
total
-rw-r--r-- root root Mar : mysql-bin.
-rw-r--r-- root root Mar : mysql-bin.

#在主库安装，进入安装包目录
[root@mysql-db01 ~]# cd /home/oldboy/tools/
#下载Atlas
[root@mysql-db01 tools]#
wget https://github.com/Qihoo360/Atlas/releases/download/2.2.1/Atlas-2.2.1.el6.x86_64.rpm
#安装
[root@mysql-db01 tools]# rpm -ivh Atlas-2.2..el6.x86_64.rpm
Preparing... ########################################### [%]
:Atlas ########################################### [%]

#进入Atlas工具目录
[root@mysql-db01 ~]# cd /usr/local/mysql-proxy/bin/
#生成密码
[root@mysql-db01 bin]# ./encrypt oldboy123
#修改Atlas配置文件
[root@mysql-db01 ~]# vim /usr/local/mysql-proxy/conf/test.cnf
#Atlas后端连接的MySQL主库的IP和端口，可设置多项，用逗号分隔
proxy-backend-addresses = 10.0.0.51:
#Atlas后端连接的MySQL从库的IP和端口
proxy-read-only-backend-addresses = 10.0.0.52:,10.0.0.53:
#用户名与其对应的加密过的MySQL密码
pwds = root:1N/CNLSgqXuTZ6zxvGQr9A==
#SQL日志的开关
sql-log = ON
#Atlas监听的工作接口IP和端口
proxy-address = 0.0.0.0:
#默认字符集，设置该项后客户端不再需要执行SET NAMES语句
charset = utf8

[root@mysql-db01 ~]# /usr/local/mysql-proxy/bin/mysql-proxyd test start
OK: MySQL-Proxy of test is started

#用atlas管理用户登录
[root@mysql-db01 ~]# mysql -uuser -ppwd -h127.0.0. -P2345
#查看可用命令帮助
mysql> select * from help;
#查看后端代理的库
mysql> SELECT * FROM backends;

#平滑摘除mysql
mysql> REMOVE BACKEND ;
Empty set (0.00 sec)
#检查是否摘除成功
mysql> SELECT * FROM backends;

#保存到配置文件中
mysql> SAVE CONFIG;
Empty set (0.06 sec)