1 MYSQL的binlog特性,需要用户具备哪些权限?
MySQL Binlog权限需要3个权限 :
SELECT
- 缺乏SELECT权限时,报错为
- com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Access denied for user 'canal'@'%' to database 'binlog'
- 缺乏REPLICATION SLAVE权限时,报错为
- java.io.IOException: Error When doing Register slave:ErrorPacket [errorNumber=1045, fieldCount=-1, message=Access denied for user 'canal'@'%'
- 缺乏REPLICATION CLIENT权限时,报错为
- com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Access denied; you need (at least one of) the SUPER, REPLICATION CLIENT privilege(s) for this operation
- 缺乏SELECT权限时,报错为
REPLICATION SLAVE
REPLICATION CLIENT
Binlog为什么需要这些权限?
Select
权限代表允许从表中查看数据Replication client
权限代表允许执行show master status,show slave status,show binary logs
命令Replication slave
权限代表允许slave主机通过此用户连接master以便建立主从 复制关系
2 查验:查验指定用户是否具有指定库/指定表的binlog权限
- Step1 Check binlog status of mysql database server
-- https://github.com/alibaba/canal/wiki/AdminGuide
show variables like 'log_bin';
show variables like 'binlog_format';
- Step2 查验指定用户是否具有指定库/指定表的binlog权限
SHOW GRANTS FOR '{userName}'@'%';
3 授予权限
GRANT
SELECT
, REPLICATION SLAVE
, REPLICATION CLIENT
ON *.*
TO '{username}'@'%' IDENTIFIED BY '{password}'; -- % 可替换为 指定的 h