Heartbeat MySQL双主复制

  1 [root@master1 ~]# yum list installed | grep mysql	        #查看是否存在其他MySQL组件
  2 [root@master1 ~]# yum -y remove mysql*			#为避免冲突引，卸载已存在的组件
  3 [root@master1 ~]# yum -y install mariadb mariadb-server
  4 [root@master1 ~]# systemctl start mariadb.service

  1 [root@master1 ~]# mysql_secure_installation		#设置root密码
  2 [root@master1 ~]# systemctl restart mariadb.service

  1 [root@master1 ~]# vi /etc/my.cnf
  2 [mysqld]
  3 ……
  4 server-id=1				#设置主服务器master的id
  5 log-bin=mysql-bin			#配置二进制变更日志命名格式
  6 replicate-wild-ignore-table=mysql.%
  7 replicate-wild-ignore-table=test.%
  8 replicate-wild-ignore-table=information_schema.%

  1 binlog-ignore-db = mysql
  2 binlog-ignore-db = test
  3 binlog-ignore-db = information_schema

  1 binlog-do-db = mysqltest

  1 replicate-wild-ignore-table=mysql.%	        #从库配置不同步表
  2 replicate-wild-do-table=test.%		#从库配置需要同步的表

  1 [root@master1 ~]# mysql -uroot -p
  2 Enter password:
  3 MariaDB [(none)]>  grant replication slave on *.* to ‘repl_user‘@‘192.168.88.101‘ identified by ‘x12345678‘;
  4 MariaDB [(none)]>  grant all privileges on *.* to ‘root‘@‘192.168.88.%‘  identified by ‘x120952576‘ with grant option;
  5 MariaDB [(none)]>  flush privileges;
  6 [root@master1 ~]# systemctl restart mariadb.service
  7 [root@master1 ~]# mysql -uroot -p
  8 Enter password:
  9 MariaDB [(none)]>  show master status;

  1 [root@master2 ~]# vi /etc/my.cnf
  2 [mysqld]
  3 server-id=2				#设置主服务器master的id
  4 log-bin=mysql-bin			#配置二进制变更日志命名格式
  5 replicate-wild-ignore-table=mysql.%
  6 replicate-wild-ignore-table=test.%
  7 replicate-wild-ignore-table=information_schema.%
  8 read_only=1

  1 [root@master2 ~] mysql -uroot -p
  2 Enter password:
  3 MariaDB [(none)]>  grant replication slave on *.* to ‘repl_user‘@‘192.168.88.100‘ identified by ‘x12345678‘;
  4 MariaDB [(none)]>  grant all privileges on *.* to ‘root‘@‘192.168.88.%‘  identified by ‘x120952576‘ with grant option;
  5 MariaDB [(none)]>  flush privileges;
  6 [root@master2 ~]# systemctl restart mariadb.service
  7 [root@master2 ~]# mysql -uroot -p
  8 Enter password:
  9 MariaDB [(none)]>  show master status;

  1 [root@master1 ~]# mysql -uroot -p
  2 Enter password:
  3 MariaDB [(none)]>  change master to master_host=‘192.168.88.101‘,
  4 master_user=‘repl_user‘,
  5 master_password=‘x12345678‘,
  6 master_log_file=‘mysql-bin.000001‘,
  7 master_port=3306,
  8 master_log_pos=245;
  9 MariaDB [(none)]>  start slave;
 10 MariaDB [(none)]>  show slave status\G			#查看slave状态

  1 [root@Master02 ~]# mysql -uroot -p
  2 Enter password:
  3 MariaDB [(none)]>  change master to master_host=‘192.168.88.100‘,
  4 master_user=‘repl_user‘,
  5 master_password=‘x12345678‘,
  6 master_log_file=‘mysql-bin.000001‘,
  7 master_log_pos=245;
  8 MariaDB [(none)]>  start slave;
  9 MariaDB [(none)]>  show slave status\G			#查看slave状态

  1 [root@master1 ~]# vi /usr/local/heartbeat/etc/ha.d/authkeys
  2 auth 3
  3 3 md5 Yes!

  1 [root@master1 ~]# vi /usr/local/heartbeat/etc/ha.d/ha.cf
  2 logfile /var/log/ha-log			#记录Heartbeat其他相关日志信息
  3 logfacility     local0			#设置heartbeat的日志,这里用的是系统日志
  4 keepalive 2				        #设定心跳(监测)时间间隔为2秒
  5 deadtime 15				        #宣告死亡时间
  6 warntime 10				        #心跳延时时间
  7 initdead 60				        #初始化时间
  8 udpport 694				        #用于通信的UDP端口
  9 bcast   eth1				#接受广播心跳的网卡接口
 10 ucast eth1 192.168.77.101		        #置对方机器心跳检测的IP
 11 auto_failback off			        #关闭自动切回恢复正常的主节点
 12 node master1.yewu.com			#集群节点的名称，必须匹配uname -n的结果。
 13 node master2.yewu.com
 14 ping 192.168.88.1
 15 respawn hacluster /usr/local/heartbeat/libexec/heartbeat/ipfail

  1 [root@master1 ~]# ll /usr/local/heartbeat/etc/ha.d/resource.d/	#查看现有资源类型
  2 [root@master1 ~]# vi /usr/local/heartbeat/etc/ha.d/haresources
  3 master1.yewu.com IPaddr::192.168.88.88/24/eth0 mariadb
  4 [root@master1 ~]# scp /usr/local/heartbeat/etc/ha.d/{ha.cf,haresources,authkeys} 192.168.88.101:/usr/local/heartbeat/etc/ha.d/		                                                #将所有配置复制至master2节点
  5 [root@master2 ~]# vi /usr/local/heartbeat/etc/ha.d/ha.cf
  6 ucast eth1 192.168.77.100		                                #置对方机器心跳检测的IP
  7 [root@master1 ~]# systemctl stop mariadb.service
  8 [root@master1 ~]# systemctl disable mariadb.service
  9 [root@master2 ~]# systemctl stop mariadb.service
 10 [root@master2 ~]# systemctl disable mariadb.service

  1 [root@master1 ~]# systemctl start heartbeat.service
  2 [root@master1 ~]# systemctl enable heartbeat.service
  3 [root@master1 ~]# tail -f /var/log/ha-log		#验证日志

  1 [root@master1 ~]# ifconfig				#查看活的的vip

  1 [root@master2 ~]# systemctl start heartbeat.service
  2 [root@master1 ~]# tail -f /var/log/ha-log	#观察master2节点启动后的master1日志

  1 [root@master1 ~]# shutdownr			#模拟master1节点宕机
  2 [root@master2 ~]# tail -f /var/log/ha-log	#观察master2节点的切换log

  1 [root@master2 ~]# ifconfig			#master2节点会自动接管vip

  1 #!/bin/sh
  2 #****************************************************************#
  3 # ScriptName: mysql_down.sh
  4 # Author: xhy
  5 # Create Date: 2018-12-20 16:40
  6 # Modify Author: xhy
  7 # Modify Date: 2018-12-20 16:40
  8 # Version:
  9 #***************************************************************#
 10 MYSQL=/usr/bin/mysql
 11 MYSQL_HOST=localhost
 12 MYSQL_USER=root
 13 MYSQL_PASSWORD=x120952576
 14 date=`date +%y%m%d-%H:%M:`
 15 echo $date
 16 $MYSQL -h $MYSQL_HOST -u $MYSQL_USER -p$MYSQL_PASSWORD -e "show status;" >/dev/null 2>&1
 17 #$mysqlclient --host=$host --port=$port--user=$user --password=$password  -e"show databases;" > /dev/null 2>&1
 18 if [ $? == 0 ]
 19 then
 20    echo " $host mysql login successfully "
 21    exit 0
 22 else
 23    echo " $host mysql login faild"
 24    /etc/init.d/heartbeat stop
 25    exit 2
 26 fi

  1 [root@master2 ~]# crontab -e
  2 */1 * * * * /root/mysql_down.sh >>/root/check_mysql.log