配置mysql的主从同步

jie114474162024-02-24 22:04

主库配置

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server-id=1
port=3306

datadir=/data/mysql
socket=/var/lib/mysql/mysql.sock

log-error=/var/log/mysqld.log
pid-file=/var/run/mysqld/mysqld.pid

#log
expire_logs_days = 7
tmp_table_size=1G
#bin-log
log-bin=mysql-bin
sync_binlog=1
binlog_format=mixed
max_binlog_size=5G
binlog_cache_size=128m
max_binlog_cache_size=512m


#config
innodb_buffer_pool_size=1G

添加用户

添加用户权限

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grant replication slave on *.* to 'relay'@'%';
 
FLUSH PRIVILEGES;

显示主库状态

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show master status;

配置

配置从库

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CHANGE MASTER TO 
MASTER_HOST = '11.11.4.15',  
MASTER_USER = 'relay', 
MASTER_PASSWORD = 'xxxx',
MASTER_PORT = 3306,
MASTER_LOG_FILE='mysql-bin.000001',
MASTER_LOG_POS=852,
MASTER_RETRY_COUNT = 60,
GET_MASTER_PUBLIC_KEY=1,
MASTER_HEARTBEAT_PERIOD = 10000;

启动从库

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start slave;

如果要重新修改配置，需要先停止

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stop slave;

最后查看从库状态

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show slave status;