这篇文章主要介绍“怎么安装Mysql双机热备”，在日常操作中，相信很多人在怎么安装Mysql双机热备问题上存在疑惑，小编查阅了各式资料，整理出简单好用的操作方法，希望对大家解答”怎么安装Mysql双机热备”的疑惑有所帮助！接下来，请跟着小编一起来学习吧！
一、安装mysql
#tar -xf mysql-5.7.18-1.el6.x86_64.rpm-bundle.tar
#yum localinstall *.rpm1.1修改mysql配置
# For advice on how to change settings please see
# http://dev.mysql.com/doc/refman/5.7/en/server-configuration-defaults.html
[mysqld]
#
# Remove leading # and set to the amount of RAM for the most important data
# cache in MySQL. Start at 70% of total RAM for dedicated server, else 10%.
# innodb_buffer_pool_size = 128M
#
# Remove leading # to turn on a very important data integrity option: logging
# changes to the binary log between backups.
# log_bin
#
# Remove leading # to set options mainly useful for reporting servers.
# The server defaults are faster for transactions and fast SELECTs.
# Adjust sizes as needed, experiment to find the optimal values.
# join_buffer_size = 128M
# sort_buffer_size = 2M
# read_rnd_buffer_size = 2M
datadir=/data/mysql
socket=/var/lib/mysql/mysql.sock
# Disabling symbolic-links is recommended to prevent assorted security risks
symbolic-links=0
log-error=/var/log/mysqld.log
pid-file=/var/run/mysqld/mysqld.pid
explicit_defaults_for_timestamp=true
tmpdir=/tmp
[client]
default-character-set=utf8mb4
[mysqld]
character_set_server=utf8mb41.2权限修改
[root@172 ~]# chown -R mysql:mysql /data
[root@172 ~]# chmod 777 -R /data/
[root@172 ~]# chmod -R 777 /tmp1.3启动mysql服务
[root@172 ~]# service mysqld restart
Stopping mysqld: [FAILED]
Initializing MySQL database: [ OK ]
Installing validate password plugin: [ OK ]
Starting mysqld: [ OK ]1.4查看temp密码
more /var/log/mysqld.log |grep temporary1.5修改root密码
db1
ALTER USER 'root'@'localhost' IDENTIFIED BY '*****';
flush privileges;
exit;db2
ALTER USER 'root'@'localhost' IDENTIFIED BY '*****';
flush privileges;
exit;二、配置主从同步
| master1 | 172.28.8.187 |
|---|---|
| master2 | 172.28.8.188 |
2.1 配置master1给master2登录的密码
Master1
create user 'repl' identified by '*****';
GRANT REPLICATION SLAVE ON *.* TO 'repl'@'172.28.8.188' IDENTIFIED BY '*****';
FLUSH PRIVILEGES;
mysql> create database mydb default charset utf8;在172.28.8.188测试repuser是否能登录172.28.8.187上的数据库
mysql -urepl -p -h272.28.8.1872.1.1 Master1配置my.cnf
# For advice on how to change settings please see
# http://dev.mysql.com/doc/refman/5.7/en/server-configuration-defaults.html
[mysqld]
#
# Remove leading # and set to the amount of RAM for the most important data
# cache in MySQL. Start at 70% of total RAM for dedicated server, else 10%.
# innodb_buffer_pool_size = 128M
#
# Remove leading # to turn on a very important data integrity option: logging
# changes to the binary log between backups.
# log_bin
#
# Remove leading # to set options mainly useful for reporting servers.
# The server defaults are faster for transactions and fast SELECTs.
# Adjust sizes as needed, experiment to find the optimal values.
# join_buffer_size = 128M
# sort_buffer_size = 2M
# read_rnd_buffer_size = 2M
datadir=/data/mysql
socket=/var/lib/mysql/mysql.sock
# Disabling symbolic-links is recommended to prevent assorted security risks
symbolic-links=0
log-error=/var/log/mysqld.log
pid-file=/var/run/mysqld/mysqld.pid
explicit_defaults_for_timestamp=true
tmpdir=/tmp
character_set_server=utf8mb4
server-id=177
log-bin=/var/log/mysql/mysql-bin.log
read-only=0
binlog-ignore-db=mysql
binlog-ignore-db=information_schema
expire_logs_days= 365
auto-increment-increment = 2
auto-increment-offset = 1
[client]
default-character-set=utf8mb42.2 Master2配置my.cnf
#除server-id外，其他与master1保持一致2.2.1 Master2给Master1创建账号密码并授权
create user 'repl' identified by '*****';
GRANT REPLICATION SLAVE ON *.* TO 'repl'@'172.28.8.187' IDENTIFIED BY '*****';
FLUSH PRIVILEGES;2.3 查看Master同步状态
master1
mysql> show master status;
+------------------+----------+--------------+--------------------------+-------------------+
| File | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set |
+------------------+----------+--------------+--------------------------+-------------------+
| mysql-bin.000001 | 154 | mydb | mysql,information_schema | |
+------------------+----------+--------------+--------------------------+-------------------+
1 row in set (0.00 sec)master2
mysql> show master status;
+------------------+----------+--------------+--------------------------+-------------------+
| File | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set |
+------------------+----------+--------------+--------------------------+-------------------+
| mysql-bin.000001 | 154 | mydb | mysql,information_schema | |
+------------------+----------+--------------+--------------------------+-------------------+
1 row in set (0.00 sec)设置master1从master2同步
mysql>CHANGE MASTER TO MASTER_HOST='172.28.8.188',MASTER_PORT=3306,MASTER_USER='repl',MASTER_PASSWORD='b4l:GGtG3s0*',MASTER_LOG_FILE='mysql-bin.000002',MASTER_LOG_POS=860;
mysql> SHOW SLAVE STATUS\G
mysql> START SLAVE;
mysql> SHOW SLAVE STATUS\G设置master2从master1同步
mysql>CHANGE MASTER TO MASTER_HOST='172.28.8.187',MASTER_PORT=3306,MASTER_USER='repl',MASTER_PASSWORD='2S1*8pr+BzqH^8T`',MASTER_LOG_FILE='mysql-bin.000003',MASTER_LOG_POS=1497;
mysql> SHOW SLAVE STATUS\G
mysql> START SLAVE;
mysql> SHOW SLAVE STATUS\G如出现以下两项，则说明配置成功！
Slave_IO_Running: Yes
Slave_SQL_Running: Yes3.双主同步测试
进入master1 mysql 数据库
mysql> create database crm;
Query OK, 1 row affected (0.00 sec)
mysql> use crm;
Database changed
mysql> create table employee(id int auto_increment,name varchar(10),primary key(id));
Query OK, 0 rows affected (0.00 sec)
mysql> insert into employee(name) values('a');
Query OK, 1 row affected (0.00 sec)
mysql> insert into employee(name) values('b');
Query OK, 1 row affected (0.00 sec)
mysql> insert into employee(name) values('c');
Query OK, 1 row affected (0.06 sec)
mysql> select * from employee;
+----+------+
| id | name |
+----+------+
| 1 | a |
| 3 | b |
| 5 | c |
+----+------+
3 rows in set (0.00 sec)进入master2，查看是否有crm这个数据库和employee表。
mysql> show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| crm |
| mysql |
| performance_schema |
+--------------------+
4 rows in set (0.00 sec)
mysql> use crm;
Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -A
Database changed
mysql> show tables;
+---------------+
| Tables_in_crm |
+---------------+
| employee |
+---------------+
1 row in set (0.00 sec)
mysql> select * from employee;
+----+------+
| id | name |
+----+------+
| 1 | a |
| 3 | b |
| 5 | c |
+----+------+
3 rows in set (0.00 sec)
mysql> insert into employee(name) values('d');
Query OK, 1 row affected (0.00 sec)
mysql> select * from employee;
+----+------+
| id | name |
+----+------+
| 1 | a |
| 3 | b |
| 5 | c |
| 7 | d |
+----+------+
4 rows in set (0.00 sec)在master1的中查看是否有刚刚在master2中插入的数据。
mysql> select * from employee;
+----+------+
| id | name |
+----+------+
| 1 | a |
| 3 | b |
| 5 | c |
| 7 | d |
+----+------+
4 rows in set (0.00 sec)到此，关于“怎么安装Mysql双机热备”的学习就结束了，希望能够解决大家的疑惑。理论与实践的搭配能更好的帮助大家学习，快去试试吧！若想继续学习更多相关知识，请继续关注亿速云网站，小编会继续努力为大家带来更多实用的文章！
