When installing a new MySQL agent, the message "CLIENT_PLUGIN_AUTH" is required occurs when connecting to a MySQL 18.104.22.168 instance.
The MySQL driver no longer supports 5.1.
Beginning with the 22.214.171.124 cartridge, the supported MySQL versions are now 5.5, 5.6, 5.7, and 8.0.
host cache issues on the MySQL instance
Download and unpack the 126.96.36.199 MySQL cartridge (attached to this KB). This cartridge can be installed concurrently with newer cartridges in the FMS.
It uses the JDBC Connector/J driver 5.1.39 and is the highest supported version for MySQL 5.1 databases.
Note: Some customers have found that the MySQL 188.8.131.52 cartridge (which used the 5.1.42 JDBC Connector/J driver) will successfully monitor MySQL 5.1 databases.
For databases above 5.1, running the FLUSH HOSTS command may help monitoring to be re-established.
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