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This variable defines the global policy for controlling reuse of previous passwords based on time elapsed. For an account password used previously, this variable indicates the number of days that must pass before the password can be reused. If the value is 0 (the default), there is no reuse restriction based on time elapsed. 

Changes to this variable apply immediately to all accounts defined with the PASSWORD REUSE INTERVAL DEFAULT  option. 

The global time-elapsed password reuse policy can be overridden as desired for individual accounts using the PASSWORD REUSE INTERVAL  option of the CREATE USER  and ALTER USER  statements. See Section 6.2.15, “Password Management” . 

• persisted_globals_load 

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Whether to load persisted configuration settings from the mysqld-auto.cnf  file in the data directory. The server normally processes this file at startup after all other option files (see Section 4.2.2.2, “Using Option Files” ). Disabling persisted_globals_load  causes the server startup sequence to skip mysqld-auto.cnf . 

To modify the contents of mysqld-auto.cnf , use the SET PERSIST , SET PERSIST_ONLY , and RESET PERSIST  statements. See Section 5.1.9.3, “Persisted System Variables” . 

• persist_only_admin_x509_subject 

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