Edit File: system_variables.result
#----------------------------------------------------------------------- # Setup # Install connection_control plugin INSTALL PLUGIN connection_control SONAME 'CONNECTION_CONTROL_LIB'; INSTALL PLUGIN connection_control_failed_login_attempts SONAME 'CONNECTION_CONTROL_LIB'; CREATE USER no_privs@localhost IDENTIFIED BY 'abcd'; #----------------------------------------------------------------------- # Case 1 : connection_control_failed_connections_threshold SHOW GRANTS; Grants for root@localhost GRANT ALL PRIVILEGES ON *.* TO 'root'@'localhost' WITH GRANT OPTION GRANT PROXY ON ''@'' TO 'root'@'localhost' WITH GRANT OPTION SET @saved_value = @@global.connection_control_failed_connections_threshold; SELECT @saved_value; @saved_value 3 SET @@global.connection_control_failed_connections_threshold = @saved_value; # 1.1 : Setting connection_control_failed_connections_threshold to valid # value SET @@global.connection_control_failed_connections_threshold = 20; SELECT @@global.connection_control_failed_connections_threshold; @@global.connection_control_failed_connections_threshold 20 SET @@global.connection_control_failed_connections_threshold = 2000; SELECT @@global.connection_control_failed_connections_threshold; @@global.connection_control_failed_connections_threshold 2000 SET @@global.connection_control_failed_connections_threshold = 2147483647; SELECT @@global.connection_control_failed_connections_threshold; @@global.connection_control_failed_connections_threshold 2147483647 SET @@global.connection_control_failed_connections_threshold = DEFAULT; SELECT @@global.connection_control_failed_connections_threshold; @@global.connection_control_failed_connections_threshold 3 # 1.2 : Setting connection_control_failed_connections_threshold to # invalid value SET @@global.connection_control_failed_connections_threshold = NULL; ERROR 42000: Incorrect argument type to variable 'connection_control_failed_connections_threshold' SELECT @@global.connection_control_failed_connections_threshold; @@global.connection_control_failed_connections_threshold 3 SET @@global.connection_control_failed_connections_threshold = `SELECT * FROM mysql.user`; ERROR 42000: Incorrect argument type to variable 'connection_control_failed_connections_threshold' SELECT @@global.connection_control_failed_connections_threshold; @@global.connection_control_failed_connections_threshold 3 SET @@global.connection_control_failed_connections_threshold = -20; ERROR 42000: Variable 'connection_control_failed_connections_threshold' can't be set to the value of '-20' SELECT @@global.connection_control_failed_connections_threshold; @@global.connection_control_failed_connections_threshold 3 SET @@global.connection_control_failed_connections_threshold = 9223372036854775808; ERROR 42000: Variable 'connection_control_failed_connections_threshold' can't be set to the value of '9223372036854775808' SELECT @@global.connection_control_failed_connections_threshold; @@global.connection_control_failed_connections_threshold 3 SET @@global.connection_control_failed_connections_threshold = -9223372036854775808; ERROR 42000: Variable 'connection_control_failed_connections_threshold' can't be set to the value of '-9223372036854775808' SELECT @@global.connection_control_failed_connections_threshold; @@global.connection_control_failed_connections_threshold 3 # Switch to conn_no_privs # 1.3 : Use no_privs@localhost to set # connection_control_failed_connections_threshold to valid value SET @@global.connection_control_failed_connections_threshold = 2147483647; ERROR 42000: Access denied; you need (at least one of) the SUPER privilege(s) for this operation SELECT @@global.connection_control_failed_connections_threshold; @@global.connection_control_failed_connections_threshold 3 SET @@global.connection_control_failed_connections_threshold = DEFAULT; ERROR 42000: Access denied; you need (at least one of) the SUPER privilege(s) for this operation SELECT @@global.connection_control_failed_connections_threshold; @@global.connection_control_failed_connections_threshold 3 # 1.4 : Use no_privs@localhost to set # connection_control_failed_connections_threshold to invalid value SET @@global.connection_control_failed_connections_threshold = NULL; ERROR 42000: Access denied; you need (at least one of) the SUPER privilege(s) for this operation SELECT @@global.connection_control_failed_connections_threshold; @@global.connection_control_failed_connections_threshold 3 SET @@global.connection_control_failed_connections_threshold = 9223372036854775808; ERROR 42000: Access denied; you need (at least one of) the SUPER privilege(s) for this operation SELECT @@global.connection_control_failed_connections_threshold; @@global.connection_control_failed_connections_threshold 3 SET @@global.connection_control_failed_connections_threshold = @saved_value; SELECT @@global.connection_control_failed_connections_threshold; @@global.connection_control_failed_connections_threshold 3 #----------------------------------------------------------------------- # Case 2 : connection_control_min_connection_delay SET @saved_value= @@global.connection_control_min_connection_delay; SELECT @saved_value; @saved_value 1000 # 2.1 : Setting connection_control_min_connection_delay to valid # value SET @@global.connection_control_min_connection_delay = 20000; SELECT @@global.connection_control_min_connection_delay; @@global.connection_control_min_connection_delay 20000 SET @@global.connection_control_min_connection_delay = 2000; SELECT @@global.connection_control_min_connection_delay; @@global.connection_control_min_connection_delay 2000 SET @@global.connection_control_min_connection_delay = 2147483647; SELECT @@global.connection_control_min_connection_delay; @@global.connection_control_min_connection_delay 2147483647 SET @@global.connection_control_min_connection_delay = DEFAULT; SELECT @@global.connection_control_min_connection_delay; @@global.connection_control_min_connection_delay 1000 # 2.2 : Setting connection_control_min_connection_delay to # invalid value SET @@global.connection_control_min_connection_delay = NULL; ERROR 42000: Incorrect argument type to variable 'connection_control_min_connection_delay' SELECT @@global.connection_control_min_connection_delay; @@global.connection_control_min_connection_delay 1000 SET @@global.connection_control_min_connection_delay = `SELECT * FROM mysql.user`; ERROR 42000: Incorrect argument type to variable 'connection_control_min_connection_delay' SELECT @@global.connection_control_min_connection_delay; @@global.connection_control_min_connection_delay 1000 SET @@global.connection_control_min_connection_delay = -20; ERROR 42000: Variable 'connection_control_min_connection_delay' can't be set to the value of '-20' SELECT @@global.connection_control_min_connection_delay; @@global.connection_control_min_connection_delay 1000 SET @@global.connection_control_min_connection_delay = 9223372036854775808; ERROR 42000: Variable 'connection_control_min_connection_delay' can't be set to the value of '9223372036854775808' SELECT @@global.connection_control_min_connection_delay; @@global.connection_control_min_connection_delay 1000 SET @@global.connection_control_min_connection_delay = -9223372036854775808; ERROR 42000: Variable 'connection_control_min_connection_delay' can't be set to the value of '-9223372036854775808' SELECT @@global.connection_control_min_connection_delay; @@global.connection_control_min_connection_delay 1000 SET@@global.connection_control_min_connection_delay = 20; ERROR 42000: Variable 'connection_control_min_connection_delay' can't be set to the value of '20' SELECT @@global.connection_control_min_connection_delay; @@global.connection_control_min_connection_delay 1000 # Switch to conn_no_privs # 2.3 : Use no_privs@localhost to set # connection_control_min_connection_delay to valid value SET @@global.connection_control_min_connection_delay = 2147483647; ERROR 42000: Access denied; you need (at least one of) the SUPER privilege(s) for this operation SELECT @@global.connection_control_min_connection_delay; @@global.connection_control_min_connection_delay 1000 SET @@global.connection_control_min_connection_delay = DEFAULT; ERROR 42000: Access denied; you need (at least one of) the SUPER privilege(s) for this operation SELECT @@global.connection_control_min_connection_delay; @@global.connection_control_min_connection_delay 1000 # 2.4 : Use no_privs@localhost to set # connection_control_min_connection_delay to invalid value SET @@global.connection_control_min_connection_delay = NULL; ERROR 42000: Access denied; you need (at least one of) the SUPER privilege(s) for this operation SELECT @@global.connection_control_min_connection_delay; @@global.connection_control_min_connection_delay 1000 SET @@global.connection_control_min_connection_delay = 9223372036854775808; ERROR 42000: Access denied; you need (at least one of) the SUPER privilege(s) for this operation SELECT @@global.connection_control_min_connection_delay; @@global.connection_control_min_connection_delay 1000 # Switch to default connection # 2.5 : Setting connection_control_min_connection_delay to a value # greater than connection_control_max_connection_delay SET @saved_max_delay= @@global.connection_control_max_connection_delay; SET @@global.connection_control_max_connection_delay= 10000; SET @@global.connection_control_min_connection_delay= 11000; ERROR 42000: Variable 'connection_control_min_connection_delay' can't be set to the value of '11000' SELECT @@global.connection_control_min_connection_delay; @@global.connection_control_min_connection_delay 1000 SET @@global.connection_control_max_connection_delay= @saved_max_delay; SET @@global.connection_control_min_connection_delay = @saved_value; SELECT @@global.connection_control_min_connection_delay; @@global.connection_control_min_connection_delay 1000 #----------------------------------------------------------------------- # Case 3 : connection_control_max_connection_delay SET @saved_value= @@global.connection_control_max_connection_delay; SELECT @saved_value; @saved_value 2147483647 # 3.1 : Setting connection_control_max_connection_delay to valid # value SET @@global.connection_control_max_connection_delay = 20000; SELECT @@global.connection_control_max_connection_delay; @@global.connection_control_max_connection_delay 20000 SET @@global.connection_control_max_connection_delay = 2000; SELECT @@global.connection_control_max_connection_delay; @@global.connection_control_max_connection_delay 2000 SET @@global.connection_control_max_connection_delay = 2147483647; SELECT @@global.connection_control_max_connection_delay; @@global.connection_control_max_connection_delay 2147483647 SET @@global.connection_control_max_connection_delay = DEFAULT; SELECT @@global.connection_control_max_connection_delay; @@global.connection_control_max_connection_delay 2147483647 # 3.2 : Setting connection_control_max_connection_delay to # invalid value SET @@global.connection_control_max_connection_delay = NULL; ERROR 42000: Incorrect argument type to variable 'connection_control_max_connection_delay' SELECT @@global.connection_control_max_connection_delay; @@global.connection_control_max_connection_delay 2147483647 SET @@global.connection_control_max_connection_delay = `SELECT * FROM mysql.user`; ERROR 42000: Incorrect argument type to variable 'connection_control_max_connection_delay' SELECT @@global.connection_control_max_connection_delay; @@global.connection_control_max_connection_delay 2147483647 SET @@global.connection_control_max_connection_delay = -20; ERROR 42000: Variable 'connection_control_max_connection_delay' can't be set to the value of '-20' SELECT @@global.connection_control_max_connection_delay; @@global.connection_control_max_connection_delay 2147483647 SET @@global.connection_control_max_connection_delay = 9223372036854775808; ERROR 42000: Variable 'connection_control_max_connection_delay' can't be set to the value of '9223372036854775808' SELECT @@global.connection_control_max_connection_delay; @@global.connection_control_max_connection_delay 2147483647 SET @@global.connection_control_max_connection_delay = -9223372036854775808; ERROR 42000: Variable 'connection_control_max_connection_delay' can't be set to the value of '-9223372036854775808' SELECT @@global.connection_control_max_connection_delay; @@global.connection_control_max_connection_delay 2147483647 SET @@global.connection_control_max_connection_delay = 20; ERROR 42000: Variable 'connection_control_max_connection_delay' can't be set to the value of '20' SELECT @@global.connection_control_max_connection_delay; @@global.connection_control_max_connection_delay 2147483647 # Switch to conn_no_privs # 3.3 : Use no_privs@localhost to set # connection_control_max_connection_delay to valid value SET @@global.connection_control_max_connection_delay = 2147483647; ERROR 42000: Access denied; you need (at least one of) the SUPER privilege(s) for this operation SELECT @@global.connection_control_max_connection_delay; @@global.connection_control_max_connection_delay 2147483647 SET @@global.connection_control_max_connection_delay = DEFAULT; ERROR 42000: Access denied; you need (at least one of) the SUPER privilege(s) for this operation SELECT @@global.connection_control_max_connection_delay; @@global.connection_control_max_connection_delay 2147483647 # 3.4 : Use no_privs@localhost to set # connection_control_max_connection_delay to invalid value SET @@global.connection_control_max_connection_delay = NULL; ERROR 42000: Access denied; you need (at least one of) the SUPER privilege(s) for this operation SELECT @@global.connection_control_max_connection_delay; @@global.connection_control_max_connection_delay 2147483647 SET @@global.connection_control_max_connection_delay = 9223372036854775808; ERROR 42000: Access denied; you need (at least one of) the SUPER privilege(s) for this operation SELECT @@global.connection_control_max_connection_delay; @@global.connection_control_max_connection_delay 2147483647 # Switch to default connection # 3.5 : Setting connection_control_min_connection_delay to a value # greater than connection_control_max_connection_delay SET @saved_min_delay= @@global.connection_control_min_connection_delay; SET @@global.connection_control_min_connection_delay= 11000; SET @@global.connection_control_max_connection_delay= 10000; ERROR 42000: Variable 'connection_control_max_connection_delay' can't be set to the value of '10000' SELECT @@global.connection_control_max_connection_delay; @@global.connection_control_max_connection_delay 2147483647 SET @@global.connection_control_min_connection_delay= @saved_min_delay; SET @@global.connection_control_max_connection_delay = @saved_value; SELECT @@global.connection_control_max_connection_delay; @@global.connection_control_max_connection_delay 2147483647 #----------------------------------------------------------------------- # Cleanup DROP USER no_privs@localhost; # Uninstall connection_control plugin UNINSTALL PLUGIN connection_control; UNINSTALL PLUGIN connection_control_failed_login_attempts; #-----------------------------------------------------------------------