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基于shardingsphere的分库分表方案

news 来源：原创 2025/5/19 7:17:06

一、准备docker容器

启动两个mysql的docker容器

docker run -v /root/mysql_volume/data:/var/lib/mysql -v /root/mysql_volume/conf:/etc/mysql/conf.d -v /root/mysql_volume/my.cnf:/etc/my.cnf -p 3306:3306 --name mysql --restart=always --privileged=true -e MYSQL_ROOT_PASSWORD=aaaa1143134686 -d mysql:8.0.30 --lower_case_table_names=1docker run -v /root/mysql_volume_child1/data:/var/lib/mysql -v /root/mysql_volume_child1/conf:/etc/mysql/conf.d -v /root/mysql_volume_child1/my.cnf:/etc/my.cnf -p 3307:3306 --name mysql-child1 --restart=always --privileged=true -e MYSQL_ROOT_PASSWORD=aaaa1143134686 -d mysql:8.0.30 --lower_case_table_names=1

主节点的my.cnf配置

# For advice on how to change settings please see
# http://dev.mysql.com/doc/refman/8.0/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# Remove leading # to revert to previous value for default_authentication_plugin,
# this will increase compatibility with older clients. For background, see:
# https://dev.mysql.com/doc/refman/8.0/en/server-system-variables.html#sysvar_default_authentication_plugin
# default-authentication-plugin=mysql_native_password
skip-host-cache
skip-name-resolve
datadir=/var/lib/mysql
socket=/var/run/mysqld/mysqld.sock
secure-file-priv=/var/lib/mysql-files
user=mysql
lower_case_table_names = 1
# my.cnf 配置
server-id=1
log-bin=mysql-bin
binlog_format=ROWpid-file=/var/run/mysqld/mysqld.pid
[client]
socket=/var/run/mysqld/mysqld.sock!includedir /etc/mysql/conf.d/

从节点的my.cnf配置

# For advice on how to change settings please see
# http://dev.mysql.com/doc/refman/8.0/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# Remove leading # to revert to previous value for default_authentication_plugin,
# this will increase compatibility with older clients. For background, see:
# https://dev.mysql.com/doc/refman/8.0/en/server-system-variables.html#sysvar_default_authentication_plugin
# default-authentication-plugin=mysql_native_password
skip-host-cache
skip-name-resolve
datadir=/var/lib/mysql
socket=/var/run/mysqld/mysqld.sock
secure-file-priv=/var/lib/mysql-files
user=mysql
lower_case_table_names = 1server-id=2   # 每个从库要唯一
relay-log=relay-log
read_only=1pid-file=/var/run/mysqld/mysqld.pid
[client]
socket=/var/run/mysqld/mysqld.sock!includedir /etc/mysql/conf.d/

重启主节点和从节点的mysql的docker容器后，在主节点下查看binlog位置

SHOW MASTER STATUS;

在子节点配置主节点信息

CHANGE MASTER TOMASTER_HOST='ip',MASTER_USER='root',MASTER_PASSWORD='mima',MASTER_LOG_FILE='mysql-bin.000002',MASTER_LOG_POS=117056;START SLAVE;SHOW SLAVE STATUS;

二、配置shardingspheres

pom文件引入

        <!-- ShardingSphere JDBC Core --><dependency><groupId>org.apache.shardingsphere</groupId><artifactId>shardingsphere-jdbc-core-spring-boot-starter</artifactId><version>5.1.1</version></dependency>

配置文件引入

spring:application:name: 可变羽翼核心shardingsphere:datasource:# 定义多个数据源names: master, slave1master:type: com.zaxxer.hikari.HikariDataSourcedriver-class-name: com.mysql.cj.jdbc.Driverjdbc-url: jdbc:mysql://ip:3306/wing_blog?serverTimezone=UTCusername: rootpassword: passwdslave1:type: com.zaxxer.hikari.HikariDataSourcedriver-class-name: com.mysql.cj.jdbc.Driverjdbc-url: jdbc:mysql://ip:3307/wing_blog?serverTimezone=UTCusername: rootpassword: passwdrules:readwrite-splitting:data-sources:myds:type: Staticprops:write-data-source-name: masterread-data-source-names: slave1