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This article mainly explains "docker how to build a read-write separation environment". The explanation content in the article is simple and clear, easy to learn and understand. Please follow the ideas of Xiaobian to study and learn "docker how to build a read-write separation environment" together.

#Read-write separation ##Local directory structure/root - /dev - /mysql-master - /conf.d - docker.cnf - mysql.cnf - /data - /mysql-slave0 - /conf.d - docker.cnf - mysql.cnf - /data ## master configuration file docker.cnf[mysqld]skip-host-cacheskip-name-resolveserver-id = 1log-bin = master-bindefault-storage-engine=INNODBsymbolic-links=0binlog-ignore-db=mysql## masterdocker run -p 3308:3306 \ -v /root/dev/mysql-master/conf.d/:/etc/mysql/conf.d/ \ -v /root/dev/mysql-master/data:/var/lib/mysql \ -e MYSQL_ROOT_PASSWORD=123456 \ --privileged=true \ --name mysql-master \ -d mysql \ --character-set-server=utf8mb4 \ --collection-server =utf8mb4_unicode_ci ## slave configuration file [mysqld]skip-host-cacheskip-name-resolveserver-id = 2read-only = 1relay-log = slave-relay-binlog-slave-updates = 1skip-log-binsymbolic-links = 0default-storage-engine=INNODB## slavedocker run -p 3309:3306 \ -v /root/dev/mysql-slave0/conf.d/:/etc/mysql/conf.d/ \ -v /root/dev/mysql-slave0/data:/var/lib/mysql \ -e MYSQL_ROOT_PASSWORD=123456 \ --privileged=true \ --name mysql-slave0 \ --link mysql-master:mysql-master-host \ -d mysql \ --character-set-server=utf8mb4 \ --collection-server =utf8mb4_unicode_ci#create user 'rep1'@'%' identified by 'rep1'GRANT REPLICATION SLAVE ON *.* TO rep1@'%' with grant option;flush privileges;##check file and positionshow master status;#stop slave;change master to master_host='mysql-master-host' , master_user='rep1' , master_password='rep1' , master_log_file='master-bin.000003' , master_log_pos=156;start slave;show slave status\G Slave_IO_Running: YesSlave_SQL_Running: Yes Synchronization is correct #Set the permission to write to the library, read the library to write only the permission to read #Note: root account is a super account, setting read-only is invalid. Therefore, you need to open a new account. The steps for setting read-only are as follows: ##Create an account CREATE USER 'base_sa'@'%' identified by 'base_sa';##Authorize. At this time, check the reading database and find that the account has been successfully synchronized. GRANT ALL PRIVILEGES ON testdatabase.* TO 'base_sa'@'%' WITH GRANT OPTION;##How to set read-only library Two methods: Method 1: Set read-only = 1 in docker.cnf configuration file Method 2: Run set global read_only = 1 directly; Thank you for reading, the above is the content of "docker how to build a read-write separation environment", after the study of this article, I believe that everyone has a deeper understanding of how docker builds a read-write separation environment, and the specific use needs to be verified by practice. Here is, Xiaobian will push more articles related to knowledge points for everyone, welcome to pay attention!

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