我想在PostgreSQL中创建一个用户,只能从特定的数据库中进行select。在MySQL中,命令是:
GRANT SELECT ON mydb.* TO 'xxx'@'%' IDENTIFIED BY 'yyy';
PostgreSQL中等价的命令或命令系列是什么?
我试着…
postgres=# CREATE ROLE xxx LOGIN PASSWORD 'yyy';
postgres=# GRANT SELECT ON DATABASE mydb TO xxx;
但是,似乎您可以在数据库上授予的权限只有CREATE、CONNECT、TEMPORARY和TEMP。
如果您的数据库在公共模式中,这很容易(假设您已经创建了readonlyuser)
db=> GRANT SELECT ON ALL TABLES IN SCHEMA public to readonlyuser;
GRANT
db=> GRANT CONNECT ON DATABASE mydatabase to readonlyuser;
GRANT
db=> GRANT SELECT ON ALL SEQUENCES IN SCHEMA public to readonlyuser;
GRANT
如果你的数据库使用customschema,执行上面的命令,但再添加一个命令:
db=> ALTER USER readonlyuser SET search_path=customschema, public;
ALTER ROLE
我阅读了所有可能的解决方案,这些都很好,如果你记得在你授予这些东西之前连接到数据库;)无论如何,感谢所有其他解决方案!!
user@server:~$ sudo su - postgres
创建PSQL用户:
postgres@server:~$ createuser --interactive
Enter name of role to add: readonly
Shall the new role be a superuser? (y/n) n
Shall the new role be allowed to create databases? (y/n) n
Shall the new role be allowed to create more new roles? (y/n) n
启动PSQL命令行,为创建的用户设置密码:
postgres@server:~$ psql
psql (10.6 (Ubuntu 10.6-0ubuntu0.18.04.1), server 9.5.14)
Type "help" for help.
postgres=# alter user readonly with password 'readonly';
ALTER ROLE
连接到目标数据库:
postgres=# \c target_database
psql (10.6 (Ubuntu 10.6-0ubuntu0.18.04.1), server 9.5.14)
You are now connected to database "target_database" as user "postgres".
授予所有需要的特权:
target_database=# GRANT CONNECT ON DATABASE target_database TO readonly;
GRANT
target_database=# GRANT USAGE ON SCHEMA public TO readonly ;
GRANT
target_database=# GRANT SELECT ON ALL TABLES IN SCHEMA public TO readonly ;
GRANT
修改目标db public shema的默认权限:
target_database=# ALTER DEFAULT PRIVILEGES IN SCHEMA public GRANT SELECT ON TABLES TO readonly;
ALTER DEFAULT PRIVILEGES