怎么安置Mysql双机热备
发布时间：2021-12-18 12:51:43 所属栏目：MySql教程 来源：互联网
导读：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
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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 *.rpm 1.1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=utf8mb4 1.2权限修改 [root@172 ~]# chown -R mysql:mysql /data [root@172 ~]# chmod 777 -R /data/ [root@172 ~]# chmod -R 777 /tmp 1.3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 temporary 1.5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 -h272.28.8.187 2.1.1 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=utf8mb4 2.2 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 STATUSG mysql> START SLAVE; mysql> SHOW SLAVE STATUSG 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 STATUSG mysql> START SLAVE; mysql> SHOW SLAVE STATUSG 如出现以下两项，则说明配置成功！ Slave_IO_Running: Yes Slave_SQL_Running: Yes 3.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！ （编辑：好传媒网） 【声明】本站内容均来自网络，其相关言论仅代表作者个人观点，不代表本站立场。若无意侵犯到您的权利，请及时与联系站长删除相关内容! |
