This is the error text that I get for the aggregator only. I have something similar with the Data Collectors.
JMX Server Allows Clear Text Authentication is detected.
All supported releases of DX NetOps Performance Management
21.2.11 added JMX HTTPS and encrypted the password in jmx.password. We have also updated the DA sslConfig.sh to enable JMX SSL and added a sslConfig.sh to the DC to configure DC HTTPS and JMX SSL simultaneously.
For the securing of JMX to be complete, all Data Aggregators and Data Collectors need to be configured utilizing the sslConfig.sh script on that server.