mariadb/mysql-test/main/user_limits.result
Sergei Golubchik e3d9369774 cleanup: disconnect before DROP USER
let's always disconnect a user connection before dropping the said user.
MariaDB is traditionally very tolerant to active connections
of the dropped user, which isn't the case for most other databases.

Let's avoid unintentionally spreading incompatible behavior
and disconnect before drop.

Except in cases when the test specifically tests such a behavior.
2025-07-16 09:14:33 +07:00

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7.4 KiB
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set @my_max_user_connections= @@global.max_user_connections;
create table t1 (i int);
delete from mysql.user where user like 'mysqltest\_%';
delete from mysql.db where user like 'mysqltest\_%';
delete from mysql.tables_priv where user like 'mysqltest\_%';
delete from mysql.columns_priv where user like 'mysqltest\_%';
flush privileges;
create user mysqltest_1@localhost;
grant all on test.* to mysqltest_1@localhost with max_queries_per_hour 2;
flush user_resources;
connect mqph, localhost, mysqltest_1,,;
connection mqph;
select * from t1;
i
select * from t1;
i
select * from t1;
ERROR 42000: User 'mysqltest_1' has exceeded the 'max_queries_per_hour' resource (current value: 2)
connect mqph2, localhost, mysqltest_1,,;
connection mqph2;
select * from t1;
ERROR 42000: User 'mysqltest_1' has exceeded the 'max_queries_per_hour' resource (current value: 2)
connection default;
disconnect mqph;
disconnect mqph2;
drop user mysqltest_1@localhost;
create user mysqltest_1@localhost;
grant all on test.* to mysqltest_1@localhost with max_updates_per_hour 2;
flush user_resources;
connect muph, localhost, mysqltest_1,,;
connection muph;
select * from t1;
i
select * from t1;
i
select * from t1;
i
delete from t1;
delete from t1;
delete from t1;
ERROR 42000: User 'mysqltest_1' has exceeded the 'max_updates_per_hour' resource (current value: 2)
select * from t1;
i
connect muph2, localhost, mysqltest_1,,;
connection muph2;
delete from t1;
ERROR 42000: User 'mysqltest_1' has exceeded the 'max_updates_per_hour' resource (current value: 2)
select * from t1;
i
connection default;
disconnect muph;
disconnect muph2;
drop user mysqltest_1@localhost;
create user mysqltest_1@localhost;
grant all on test.* to mysqltest_1@localhost with max_connections_per_hour 2;
flush user_resources;
connect mcph1, localhost, mysqltest_1,,;
connection mcph1;
select * from t1;
i
connect mcph2, localhost, mysqltest_1,,;
connection mcph2;
select * from t1;
i
connect(localhost,mysqltest_1,,test,MYSQL_PORT,MYSQL_SOCK);
connect mcph3, localhost, mysqltest_1,,;
ERROR 42000: User 'mysqltest_1' has exceeded the 'max_connections_per_hour' resource (current value: 2)
select * from t1;
i
disconnect mcph1;
disconnect mcph2;
connect(localhost,mysqltest_1,,test,MYSQL_PORT,MYSQL_SOCK);
connect mcph3, localhost, mysqltest_1,,;
ERROR 42000: User 'mysqltest_1' has exceeded the 'max_connections_per_hour' resource (current value: 2)
connection default;
drop user mysqltest_1@localhost;
flush privileges;
create user mysqltest_1@localhost;
grant all on test.* to mysqltest_1@localhost with max_user_connections 2;
flush user_resources;
connect muc1, localhost, mysqltest_1,,;
connection muc1;
select * from t1;
i
connect muc2, localhost, mysqltest_1,,;
connection muc2;
select * from t1;
i
connect(localhost,mysqltest_1,,test,MYSQL_PORT,MYSQL_SOCK);
connect muc3, localhost, mysqltest_1,,;
ERROR 42000: User 'mysqltest_1' has exceeded the 'max_user_connections' resource (current value: 2)
disconnect muc1;
connect muc3, localhost, mysqltest_1,,;
select * from t1;
i
connection default;
grant usage on *.* to mysqltest_1@localhost with max_user_connections 3;
flush user_resources;
connect muc4, localhost, mysqltest_1,,;
connection muc4;
select * from t1;
i
connect(localhost,mysqltest_1,,test,MYSQL_PORT,MYSQL_SOCK);
connect muc5, localhost, mysqltest_1,,;
ERROR 42000: User 'mysqltest_1' has exceeded the 'max_user_connections' resource (current value: 3)
connection default;
grant usage on *.* to mysqltest_1@localhost with max_user_connections -1;
show grants for mysqltest_1@localhost;
Grants for mysqltest_1@localhost
GRANT USAGE ON *.* TO `mysqltest_1`@`localhost` WITH MAX_USER_CONNECTIONS -1
GRANT ALL PRIVILEGES ON `test`.* TO `mysqltest_1`@`localhost`
flush user_resources;
show grants for mysqltest_1@localhost;
Grants for mysqltest_1@localhost
GRANT USAGE ON *.* TO `mysqltest_1`@`localhost` WITH MAX_USER_CONNECTIONS -1
GRANT ALL PRIVILEGES ON `test`.* TO `mysqltest_1`@`localhost`
connect(localhost,mysqltest_1,,test,MYSQL_PORT,MYSQL_SOCK);
connect muc5, localhost, mysqltest_1,,;
ERROR 42000: User 'mysqltest_1' has exceeded the 'max_user_connections' resource (current value: -1)
disconnect muc2;
disconnect muc3;
disconnect muc4;
drop user mysqltest_1@localhost;
select @@session.max_user_connections, @@global.max_user_connections;
@@session.max_user_connections @@global.max_user_connections
1000 1000
set session max_user_connections= 2;
ERROR HY000: SESSION variable 'max_user_connections' is read-only. Use SET GLOBAL to assign the value
set global max_user_connections= 2;
select @@session.max_user_connections, @@global.max_user_connections;
@@session.max_user_connections @@global.max_user_connections
2 2
create user mysqltest_1@localhost;
grant all on test.* to mysqltest_1@localhost;
flush user_resources;
connect muca1, localhost, mysqltest_1,,;
connection muca1;
select @@session.max_user_connections, @@global.max_user_connections;
@@session.max_user_connections @@global.max_user_connections
2 2
connect muca2, localhost, mysqltest_1,,;
connection muca2;
select * from t1;
i
connect(localhost,mysqltest_1,,test,MYSQL_PORT,MYSQL_SOCK);
connect muca3, localhost, mysqltest_1,,;
ERROR 42000: User mysqltest_1 already has more than 'max_user_connections' active connections
connection default;
grant usage on *.* to mysqltest_1@localhost with max_user_connections 3;
flush user_resources;
connect muca3, localhost, mysqltest_1,,;
connection muca3;
select @@session.max_user_connections, @@global.max_user_connections;
@@session.max_user_connections @@global.max_user_connections
3 2
connect(localhost,mysqltest_1,,test,MYSQL_PORT,MYSQL_SOCK);
connect muca4, localhost, mysqltest_1,,;
ERROR 42000: User 'mysqltest_1' has exceeded the 'max_user_connections' resource (current value: 3)
connection default;
disconnect muca1;
disconnect muca2;
disconnect muca3;
set global max_user_connections= 0;
grant usage on *.* to mysqltest_1@localhost with max_user_connections 0;
set global max_user_connections=-1;
show variables like "max_user_user_connections";
Variable_name Value
select @@max_user_connections;
@@max_user_connections
-1
select @@global.max_user_connections;
@@global.max_user_connections
-1
connect(localhost,mysqltest_1,,test,MYSQL_PORT,MYSQL_SOCK);
connect muca2, localhost, mysqltest_1,,;
ERROR 42000: User mysqltest_1 already has more than 'max_user_connections' active connections
connect muca2, localhost, root,,;
disconnect muca2;
connection default;
set global max_user_connections=1;
connect muca2, localhost, mysqltest_1,,;
connect(localhost,mysqltest_1,,test,MYSQL_PORT,MYSQL_SOCK);
connect muca3, localhost, mysqltest_1,,;
ERROR 42000: User mysqltest_1 already has more than 'max_user_connections' active connections
disconnect muca2;
connection default;
drop user mysqltest_1@localhost;
drop table t1;
set global max_user_connections= @my_max_user_connections;
# End of 10.1 tests
#
# MDEV-17852 Altered connection limits for user have no effect
#
create user foo@'%' with max_user_connections 1;
connect con1,localhost,foo,,"*NO-ONE*";
select current_user();
current_user()
foo@%
connect(localhost,foo,,test,MYSQL_PORT,MYSQL_SOCK);
connect con2,localhost,foo;
ERROR 42000: User 'foo' has exceeded the 'max_user_connections' resource (current value: 1)
connection default;
alter user foo with max_user_connections 2;
connect con3,localhost,foo,,"*NO-ONE*";
select current_user();
current_user()
foo@%
disconnect con3;
disconnect con1;
connection default;
drop user foo@'%';
# End of 10.2 tests