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For simple LDAP authentication, the logging level for messages written to the error log. The following table shows the permitted level values and their meanings. 

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Log level 6 is available as of MySQL 8.0.18. 

• authentication_ldap_simple_max_pool_size 

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For simple LDAP authentication, the maximum size of the pool of connections to the LDAP server. To disable connection pooling, set this variable to 0. 

This variable is used in conjunction with authentication_ldap_simple_init_pool_size . See the description of that variable. 

• authentication_ldap_simple_referral 

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