# 拉取MySQL8.0版本镜像并启动，监听在3306端口，设置root用户密码为rootdocker run --name mysql -p 3306:3306 -e MYSQL_ROOT_PASSWORD=root -e MYSQL_ROOT_HOST=% -d mysql:latest

# 首先从主库中备份数据到本地（在sh中提前进入准备好的目录）docker exec mysql /usr/bin/mysqldump -u root --password=root test > backup.sql
# 运行一个新的mysql，作为从库docker run --name mysql_bk1 -p 3309:3306 -e MYSQL_ROOT_PASSWORD=root -e MYSQL_ROOT_HOST=% -d mysql:latest
# 新开的数据启动可能需要点时间，请耐心等候，使用下面的命令可以看到mysql的运行日志，运行到新的日志内容就说明准备就绪了，可以进行使用docker logs -f mysql_bk1# /usr/sbin/mysqld: ready for connections. Version: '8.0.22'  socket: '/var/run/mysqld/mysqld.sock'  port: 3306  MySQL Community Server - GPL.
# 进入到新开的数据库中，建立数据库testdocker exec -ti mysql_bk1 mysql -u root -pcreate database test;
# Ctrl-D退出，执行下面的命令导入数据到新开的mysql中，这个需要花费好几分钟，请耐心等待；当然也可以docker cp backup.sql文件到容器中，然后连上数据库使用source backup.sqlcat backup.sql | docker exec -i mysql_bk1 /usr/bin/mysql -u root --password=root test

# Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved.## This program is free software; you can redistribute it and/or modify# it under the terms of the GNU General Public License as published by# the Free Software Foundation; version 2 of the License.## This program is distributed in the hope that it will be useful,# but WITHOUT ANY WARRANTY; without even the implied warranty of# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the# GNU General Public License for more details.## You should have received a copy of the GNU General Public License# along with this program; if not, write to the Free Software# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
## The MySQL  Server configuration file.## For explanations see# http://dev.mysql.com/doc/mysql/en/server-system-variables.html
[mysqld]pid-file        = /var/run/mysqld/mysqld.pidsocket          = /var/run/mysqld/mysqld.sockdatadir         = /var/lib/mysqlsecure-file-priv= NULL
# Custom config should go here!includedir /etc/mysql/conf.d/
#主从设置#主数据库端ID号server_id = 1            #开启二进制日志                  log-bin = mysql-bin    #需要复制的数据库名，如果复制多个数据库，重复设置这个选项即可                  binlog-do-db = test  #将从服务器从主服务器收到的更新记入到从服务器自己的二进制日志文件中                 log-slave-updates                        #控制binlog的写入频率。每执行多少次事务写入一次(这个参数性能消耗很大，但可减小MySQL崩溃造成的损失) sync_binlog = 1                    #这个参数一般用在主主同步中，用来错开自增值, 防止键值冲突auto_increment_offset = 1           #这个参数一般用在主主同步中，用来错开自增值, 防止键值冲突auto_increment_increment = 1            #二进制日志自动删除的天数，默认值为0,表示“没有自动删除”，启动时和二进制日志循环时可能删除  expire_logs_days = 7                    #将函数复制到slave  log_bin_trust_function_creators = 1    

# 将宿主机本地的配置文件复制替换MySQL的配置文件，并重启mysqldocker cp .\mysql_master.conf mysql:/etc/mysql/my.cnfdocker restart mysql
# 进入mysql中，查看master的状态，注意下面的File和Position，在从库设置中需要使用docker exec -ti mysql mysql -u root -pshow master status\G;
*************************** 1. row ***************************             File: mysql-bin.000001         Position: 156     Binlog_Do_DB: test Binlog_Ignore_DB:Executed_Gtid_Set:1 row in set (0.00 sec)

# Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved.## This program is free software; you can redistribute it and/or modify# it under the terms of the GNU General Public License as published by# the Free Software Foundation; version 2 of the License.## This program is distributed in the hope that it will be useful,# but WITHOUT ANY WARRANTY; without even the implied warranty of# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the# GNU General Public License for more details.## You should have received a copy of the GNU General Public License# along with this program; if not, write to the Free Software# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
## The MySQL  Server configuration file.## For explanations see# http://dev.mysql.com/doc/mysql/en/server-system-variables.html
[mysqld]pid-file        = /var/run/mysqld/mysqld.pidsocket          = /var/run/mysqld/mysqld.sockdatadir         = /var/lib/mysqlsecure-file-priv= NULL
# Custom config should go here!includedir /etc/mysql/conf.d/
# 主从设置# 从数据库端ID号server_id = 2           # 开启二进制日志                  log-bin = mysql-bin    # 需要复制的数据库名，如果复制多个数据库，重复设置这个选项即可                  binlog-do-db = test  # 将从服务器从主服务器收到的更新记入到从服务器自己的二进制日志文件中                 log-slave-updates                        # 控制binlog的写入频率。每执行多少次事务写入一次(这个参数性能消耗很大，但可减小MySQL崩溃造成的损失) sync_binlog = 0                    #log buffer将每秒一次地写入log file中，并且log file的flush(刷到磁盘)操作同时进行。该模式下在事务提交的时候，不会主动触发写入磁盘的操作innodb_flush_log_at_trx_commit = 0# MySQL主从复制的时候，当Master和Slave之间的网络中断，但是Master和Slave无法察觉的情况下（比如防火墙或者路由问题）。# Slave会等待slave_net_timeout设置的秒数后，才能认为网络出现故障，然后才会重连并且追赶这段时间主库的数据slave-net-timeout = 60                    log_bin_trust_function_creators = 1

# 将宿主机本地的配置文件复制替换MySQL的配置文件，并重启mysqldocker cp .\mysql_slave1.conf mysql_bk1:/etc/mysql/my.cnfdocker restart mysql_bk1
# 需要安全证书，执行下面的命令获取证书，并进入MySQL汇中docker exec -ti mysql_bk1 mysql --ssl-mode=DISABLED -h 192.168.101.104 -uroot -proot --get-server-public-key# 设置主库链接,master_log_file/master_log_pos设置从上面主库的File和Position，设置完成后启动# 这里的IP设置可以使用宿主机IP，也可以使用docker容器的ip（docker inspect [容器id]|grep IPA 查看 IP）# MASTER_HOST：主数据库的主机ip# MASTER_PORT：主数据库的端口，不设置则默认是3306# MASTER_USER：主数据库被授予同步复制权限的用户名# MASTER_PASSWORD：对应的用户密码# MASTER_LOG_FILE：在主数据库执行命令show master status 查询到的二进制日志文件名称# MASTER_LOG_POS：在主数据库执行命令show master status 查询到的位置 Position的值change master to master_host='192.168.101.104',master_user='root',master_password='root',master_log_file='mysql-bin.000001',master_log_pos=156;start slave;
# 查看，大致如下，没有错误即可show slave status\G;
mysql> show slave status\G;*************************** 1. row ***************************               Slave_IO_State: Waiting for master to send event                  Master_Host: 192.168.101.104                  Master_User: root                  Master_Port: 3306                Connect_Retry: 60              Master_Log_File: mysql-bin.000001          Read_Master_Log_Pos: 859               Relay_Log_File: 28bc4fb44f99-relay-bin.000002                Relay_Log_Pos: 324        Relay_Master_Log_File: mysql-bin.000001             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: 859              Relay_Log_Space: 540              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: 0Master_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: f6b20c68-23d1-11eb-a497-0242ac110002             Master_Info_File: mysql.slave_master_info                    SQL_Delay: 0          SQL_Remaining_Delay: NULL      Slave_SQL_Running_State: Slave has read all relay log; waiting for more updates           Master_Retry_Count: 86400                  Master_Bind:      Last_IO_Error_Timestamp:     Last_SQL_Error_Timestamp:               Master_SSL_Crl:           Master_SSL_Crlpath:           Retrieved_Gtid_Set:            Executed_Gtid_Set:                Auto_Position: 0         Replicate_Rewrite_DB:                 Channel_Name:           Master_TLS_Version:       Master_public_key_path:        Get_master_public_key: 0            Network_Namespace:1 row in set, 1 warning (0.01 sec)

docker exec -ti mysql mysql -u root -pinsert into stores (name, description) VALUES ("name103", "description103");
docker exec -ti mysql mysql_bk1 -u root -pselect * from stores;