mysql> use mysql;
Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -A

Database changed
mysql> select host, user from user;
+---------------+---------------+
| host          | user          |
+---------------+---------------+
| %             | root          |
| 192.168.0.%   | root          |
| 192.168.0.1.% | root          |
| localhost     | mysql.session |
| localhost     | mysql.sys     |
| localhost     | root          |
+---------------+---------------+
6 rows in set (0.00 sec)

mysql> update user set host='%' where user='root';
ERROR 1062 (23000): Duplicate entry '%-root' for key 'PRIMARY'  #不用管，没有影响，直接下一步
mysql> flush privileges;
Query OK, 0 rows affected (0.02 sec)

重启数数据，否则不生效

systemctl restart mysqld

mysql> grant all privileges on *.* TO 'root'@'%' identified by 'jenkins@123' with grant option;
Query OK, 0 rows affected, 1 warning (0.02 sec)
mysql>grant all on *.* to root@'localhost' identified by 'jenkins@123' with grant option;
mysql> alter user 'root'@'localhost' identified by 'jenkins@123';
mysql> flush privileges;
Mysql>exit