set password for root@localhost = password('123456');
mysqldump --single-transaction --set-gtid-purged=off nacos_config >nacos_config.sql #不鎖表匯出資料庫
mysqldump --single-transaction --flush-logs --master-data=2 --quick --routines --triggers --databases update >update_backup.sql
grant select on database1.* to 'username'@'%' identified by 'password';
mysql_config_editor set -uroot -p #免密登入
123456
select user,host from mysql.user; #檢視使用者許可權
create database cloud;
create database timeline;
show databases;
use cloud
show tables;
desc config;
mysqldump --set-gtid-purged=off cloud config > 20200827_sh-hw_to_sh2-hw_cloud_config.sql
mysql cloud < 20200518_jd-cloud_to_qd-cloud.sql
mysql cloud < 20200518_jd-cloud-config_to_qd-cloud-config.sql
create user 'test'@'%' identified by 'test';
create user 'test'@'10.24.%' identified by 'test';
grant all privileges on *.* to 'test'@'%'; #使用者享受特權
grant all on cloud.* to test@'%';
flush privileges;
create user test@'%' identified by '123456';
grant all privileges on *.* to test@'%';
grant create,alter,drop,select,insert,update,delete on cloud.* to test@'192.168.%';
select distinct concat('user: ''',user,'''@''',host,''';') as query from mysql.user;
select distinct concat('user: ''',user,'''@''',host,''';') as query from cloud.user;
show grants for 'dev'@'%';
show grants for 'root'@'%';
show grants for 'root'@'192.168.%';
show grants for 'dev'@'192.168.%';
yum localinstall -y mysql-community-libs-5.7.28-1.el7.x86_64.rpm mysql-community-libs-compat-5.7.28-1.el7.x86_64.rpm \
mysql-community-common-5.7.28-1.el7.x86_64.rpm mysql-community-client-5.7.28-1.el7.x86_64.rpm mysql-community-server-5.7.28-1.el7.x86_64.rpm
grep "password" /var/log/mysqld.log
mysql -uroot -p
alter user root@localhost identified by 'closeli01@123'；
mysqldump cloud >cloud.sql
mysql> create database cloud; # 建立資料庫
mysql> use cloud; # 使用已建立的資料庫
mysql> set names utf8; # 設定編碼
mysql> source cloud.sql # 匯入備份資料庫
mysql> show variables like "%password%";
mysql> set global validate_password_length=0;
mysql> alter user user() identified by '';
mysql> select host,user from mysql.user;
mysql> create user 'dev'@'10.0.0.%' identified by 'dev';
mysql> drop user 'dev'@'10.0.0.%';
grant all privileges on cloud.* to 'dev'@'10.0.0.%' identified by 'dev';
grant all privileges on cloud.* to 'dev'@'10.0.0.%';
mysql> flush privileges;
mysql> show grants;
mysql> show grants for 'dev'@'10.0.0.%';
/*授予使用者通過外網ip對於該資料庫的全部許可權*/
grant all privileges on `test`.* to 'test'@'%' ;
/*授予使用者在本地伺服器對該資料庫的全部許可權*/
grant all privileges on `test`.* to 'test'@'localhost';
grant select on test.* to 'user1'@'localhost'; /*給予查詢許可權*/
grant insert on test.* to 'user1'@'localhost'; /*新增插入許可權*/
grant delete on test.* to 'user1'@'localhost'; /*新增刪除許可權*/
grant update on test.* to 'user1'@'localhost'; /*新增許可權*/
flush privileges; /*重新整理許可權*/%
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