47 lines
1.3 KiB
Plaintext
47 lines
1.3 KiB
Plaintext
SELECT * FROM performance_schema.global_variables WHERE variable_name LIKE '%offline_mode%';
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VARIABLE_NAME VARIABLE_VALUE
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offline_mode OFF
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CREATE USER 'user1'@'localhost';
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CREATE USER 'user2'@'localhost';
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CREATE USER 'user3'@'localhost';
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connect conu1,localhost,user1;
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connect conu2,localhost,user2;
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connect conu3,localhost,user3;
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connection default;
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SELECT COUNT(USER) FROM INFORMATION_SCHEMA.PROCESSLIST;
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COUNT(USER)
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5
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SHOW STATUS LIKE 'threads_connected';
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Variable_name Value
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Threads_connected 4
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SET GLOBAL offline_mode = ON;
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SELECT COUNT(USER) FROM INFORMATION_SCHEMA.PROCESSLIST;
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COUNT(USER)
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2
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SHOW STATUS LIKE 'threads_connected';
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Variable_name Value
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Threads_connected 1
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disconnect default;
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disconnect conu1;
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ERROR HY000: The server is currently in offline mode
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connect(conu1,localhost,user1)
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connect(root,localhost,root)
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SELECT COUNT(USER) FROM INFORMATION_SCHEMA.PROCESSLIST;
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COUNT(USER)
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2
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connect(default,localhost,root)
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SHOW VARIABLES LIKE '%offline_mode%';
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Variable_name Value
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offline_mode ON
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SELECT COUNT(USER) FROM INFORMATION_SCHEMA.PROCESSLIST;
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COUNT(USER)
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3
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SHOW STATUS LIKE 'threads_connected';
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Variable_name Value
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Threads_connected 2
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DROP USER 'user1'@'localhost';
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DROP USER 'user2'@'localhost';
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DROP USER 'user3'@'localhost';
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# Restoring the original values.
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SET @@global.offline_mode = 0;
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