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SELECT * FROM performance_schema.global_variables WHERE variable_name LIKE '%offline_mode%';
VARIABLE_NAME VARIABLE_VALUE
offline_mode OFF
CREATE USER 'user1'@'localhost';
CREATE USER 'user2'@'localhost';
CREATE USER 'user3'@'localhost';
connect conu1,localhost,user1;
connect conu2,localhost,user2;
connect conu3,localhost,user3;
connection default;
SELECT COUNT(USER) FROM INFORMATION_SCHEMA.PROCESSLIST;
COUNT(USER)
5
Warnings:
Warning 1287 'INFORMATION_SCHEMA.PROCESSLIST' is deprecated and will be removed in a future release. Please use performance_schema.processlist instead
SHOW STATUS LIKE 'threads_connected';
Variable_name Value
Threads_connected 4
SET GLOBAL offline_mode = ON;
SELECT COUNT(USER) FROM INFORMATION_SCHEMA.PROCESSLIST;
COUNT(USER)
2
Warnings:
Warning 1287 'INFORMATION_SCHEMA.PROCESSLIST' is deprecated and will be removed in a future release. Please use performance_schema.processlist instead
SHOW STATUS LIKE 'threads_connected';
Variable_name Value
Threads_connected 1
disconnect default;
disconnect conu1;
ERROR HY000: The server is currently in offline mode
connect(conu1,localhost,user1)
connect(root,localhost,root)
SELECT COUNT(USER) FROM INFORMATION_SCHEMA.PROCESSLIST;
COUNT(USER)
2
Warnings:
Warning 1287 'INFORMATION_SCHEMA.PROCESSLIST' is deprecated and will be removed in a future release. Please use performance_schema.processlist instead
connect(default,localhost,root)
SHOW VARIABLES LIKE '%offline_mode%';
Variable_name Value
offline_mode ON
SELECT COUNT(USER) FROM INFORMATION_SCHEMA.PROCESSLIST;
COUNT(USER)
3
Warnings:
Warning 1287 'INFORMATION_SCHEMA.PROCESSLIST' is deprecated and will be removed in a future release. Please use performance_schema.processlist instead
SHOW STATUS LIKE 'threads_connected';
Variable_name Value
Threads_connected 2
DROP USER 'user1'@'localhost';
DROP USER 'user2'@'localhost';
DROP USER 'user3'@'localhost';
# Restoring the original values.
SET @@global.offline_mode = 0;
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