赋权语句
grant all privileges on *.* to username@% identified by 'password';
grant all privileges on *.* to username@10.163.225.87 identified by 'password';
Mysql主从热备
锁表
FLUSH TABLES WITH READ LOCK;
dump Mysql数据
mysqldump -h192.168.17.21 -p3306 -uroot -p123123 --all-databases > /root/all_db.sql
解表
UNLOCK TABLES;
数据同步
CHANGE MASTER to MASTER_HOST="192.168.17.21",MASTER_PORT=3306,MASTER_user="root",MASTER_PASSWORD="123123",MASTER_LOG_FILE="mysql-bin.000001",MASTER_LOG_POS=154;
修改配置文件，选择要同步的数据库
vim /etc/mysql/mysql.conf.d/mysqld.cnf server-id = 2 log_bin = /var/log/mysql/mysql-bin.log expire_logs_days = 10 max_binlog_size = 100M binlog_do_db = hive binlog_do_db = ranger binlog_do_db = azkaban binlog_ignore_db = mysql binlog_ignore_db = performance_schema binlog_ignore_db = information_schema binlog_ignore_db = sys
设置mysql密码
