安装cloudera manager使用mysql作为元数据库

1.首次安装好mysql数据库后,会生成一个随机密码,使用如下办法找到:

 cat /var/log/mysqld.log |grep password

 

2.首次安装好mysql数据库后,第一次登陆进去,需要先修改root用户密码:

grant all privileges on *.* to 'root'@'%' identified by 'xxxxxxxxx';
grant all privileges on *.* to 'root'@'localhost' identified by 'xxxxxxxxx';
flush privileges;

set password for root@localhost = password('xxxxxxxxx');

update user set password=password("xxxxxxxxx") where user="root";

flush privileges;

3.cloudera manager数据库迁移mysql数据库备份:

备份所有数据库,包括hive,oozie,hue,sentry

mysqldump -u root -p -A > oldmysql.dump

单独备份某个数据库,例如hive

mysqldump -u root -p --database hive > hive.sql

 恢复数据库:

mysql -u root -p < oldmysql.dump

 

posted @ 2018-07-17 10:05  gongxiucheng  阅读(487)  评论(0编辑  收藏  举报