mariadb/mysql-test/t/user_limits.test

#
# Test behavior of various per-account limits (aka quotas)
#

# Requires privileges to be enabled
--source include/not_embedded.inc

# Save the initial number of concurrent sessions
--source include/count_sessions.inc

set @my_max_user_connections= @@global.max_user_connections;

# Prepare play-ground
--disable_warnings
drop table if exists t1;
--enable_warnings
create table t1 (i int);
# Just be sure that nothing will bother us
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;

# Limits doesn't work with prepared statements (yet)
--disable_ps_protocol

# Test of MAX_QUERIES_PER_HOUR limit
create user mysqltest_1@localhost;
grant usage on *.* to mysqltest_1@localhost with max_queries_per_hour 2;
# This ensures that counters are reset and makes test scheduling independent
flush user_resources;
connect (mqph, localhost, mysqltest_1,,);
connection mqph;
select * from t1;
select * from t1;
--error ER_USER_LIMIT_REACHED
select * from t1;
connect (mqph2, localhost, mysqltest_1,,);
connection mqph2;
--error ER_USER_LIMIT_REACHED
select * from t1;
# cleanup
connection default;
drop user mysqltest_1@localhost;
disconnect mqph;
disconnect mqph2;

# Test of MAX_UPDATES_PER_HOUR limit
create user mysqltest_1@localhost;
grant usage on *.* to mysqltest_1@localhost with max_updates_per_hour 2;
flush user_resources;
connect (muph, localhost, mysqltest_1,,);
connection muph;
select * from t1;
select * from t1;
select * from t1;
delete from t1;
delete from t1;
--error ER_USER_LIMIT_REACHED
delete from t1;
select * from t1;
connect (muph2, localhost, mysqltest_1,,);
connection muph2;
--error ER_USER_LIMIT_REACHED
delete from t1;
select * from t1;
# Cleanup
connection default;
drop user mysqltest_1@localhost;
disconnect muph;
disconnect muph2;

# Test of MAX_CONNECTIONS_PER_HOUR limit
create user mysqltest_1@localhost;
grant usage on *.* to mysqltest_1@localhost with max_connections_per_hour 2;
flush user_resources;
connect (mcph1, localhost, mysqltest_1,,);
connection mcph1;
select * from t1;
connect (mcph2, localhost, mysqltest_1,,);
connection mcph2;
select * from t1;
--replace_result $MASTER_MYPORT MYSQL_PORT $MASTER_MYSOCK MYSQL_SOCK
--error ER_USER_LIMIT_REACHED
connect (mcph3, localhost, mysqltest_1,,);
# Old connection is still ok
select * from t1;
# Let us try to close old connections and try again. This will also test that
# counters are not thrown away if there are no connections for this user.
disconnect mcph1;
disconnect mcph2;
--replace_result $MASTER_MYPORT MYSQL_PORT $MASTER_MYSOCK MYSQL_SOCK
--error ER_USER_LIMIT_REACHED
connect (mcph3, localhost, mysqltest_1,,);
# Cleanup
connection default;
drop user mysqltest_1@localhost;

# Test of MAX_USER_CONNECTIONS limit
# We need this to reset internal mqh_used variable
flush privileges;
create user mysqltest_1@localhost;
grant usage on *.* to mysqltest_1@localhost with max_user_connections 2;
flush user_resources;
connect (muc1, localhost, mysqltest_1,,);
connection muc1;
select * from t1;
connect (muc2, localhost, mysqltest_1,,);
connection muc2;
select * from t1;
--replace_result $MASTER_MYPORT MYSQL_PORT $MASTER_MYSOCK MYSQL_SOCK
--error ER_USER_LIMIT_REACHED
connect (muc3, localhost, mysqltest_1,,);
# Closing of one of connections should help
disconnect muc1;
connect (muc3, localhost, mysqltest_1,,);
select * from t1;
# Changing of limit should also help (and immediately)
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;
--replace_result $MASTER_MYPORT MYSQL_PORT $MASTER_MYSOCK MYSQL_SOCK
--error ER_USER_LIMIT_REACHED
connect (muc5, localhost, mysqltest_1,,);

connection default;
# Test with negative max_user_connections
grant usage on *.* to mysqltest_1@localhost with max_user_connections -1;
show grants for mysqltest_1@localhost;
flush user_resources;
show grants for mysqltest_1@localhost;
--replace_result $MASTER_MYPORT MYSQL_PORT $MASTER_MYSOCK MYSQL_SOCK
--error ER_USER_LIMIT_REACHED
connect (muc5, localhost, mysqltest_1,,);

# Clean up
disconnect muc2;
disconnect muc3;
disconnect muc4;
drop user mysqltest_1@localhost;

# Now let us test interaction between global and per-account
# max_user_connections limits
select @@session.max_user_connections, @@global.max_user_connections;
# Local max_user_connections variable can't be set directly
# since this limit is per-account
--error ER_VARIABLE_IS_READONLY
set session max_user_connections= 2;
# But it is ok to set global max_user_connections
set global max_user_connections= 2;
select @@session.max_user_connections, @@global.max_user_connections;
# Let us check that global limit works
create user mysqltest_1@localhost;
grant usage on *.* to mysqltest_1@localhost;
flush user_resources;
connect (muca1, localhost, mysqltest_1,,);
connection muca1;
select @@session.max_user_connections, @@global.max_user_connections;
connect (muca2, localhost, mysqltest_1,,);
connection muca2;
select * from t1;
--replace_result $MASTER_MYPORT MYSQL_PORT $MASTER_MYSOCK MYSQL_SOCK
--error ER_TOO_MANY_USER_CONNECTIONS
connect (muca3, localhost, mysqltest_1,,);
# Now we are testing that per-account limit prevails over gloabl limit
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;
--replace_result $MASTER_MYPORT MYSQL_PORT $MASTER_MYSOCK MYSQL_SOCK
--error ER_USER_LIMIT_REACHED
connect (muca4, localhost, mysqltest_1,,);
# Cleanup
connection default;
disconnect muca1;
disconnect muca2;
disconnect muca3;
set global max_user_connections= 0;
--enable_ps_protocol

#
# Test setting negative values of max_user_connections
#
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";
select @@max_user_connections;
select @@global.max_user_connections;
# Check that we can't connect anymore except as root
--replace_result $MASTER_MYPORT MYSQL_PORT $MASTER_MYSOCK MYSQL_SOCK
--error ER_TOO_MANY_USER_CONNECTIONS
connect (muca2, localhost, mysqltest_1,,);
connect (muca2, localhost, root,,);
disconnect muca2;
connection default;
set global max_user_connections=1;
# Check that we can connect one time, not two
connect (muca2, localhost, mysqltest_1,,);
--replace_result $MASTER_MYPORT MYSQL_PORT $MASTER_MYSOCK MYSQL_SOCK
--error ER_TOO_MANY_USER_CONNECTIONS
connect (muca3, localhost, mysqltest_1,,);
disconnect muca2;
connection default;
drop user mysqltest_1@localhost;

# Final cleanup
drop table t1;

# Wait till all disconnects are completed
--source include/wait_until_count_sessions.inc

set global max_user_connections= @my_max_user_connections;