When installing a new MySQL agent, the message "CLIENT_PLUGIN_AUTH" is required occurs when connecting to a MySQL 220.127.116.11 instance.
The MySQL driver no longer supports 5.1.
Beginning with the 18.104.22.168 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 22.214.171.124 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 126.96.36.199 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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