[NOTE@2020-06-17 11:41:12.927] Unable to enumerate grid.
[EXCEPTION@2020-06-17 11:42:41.613] NODE="XXXXXXhostnameXXXXXXX" - class java.io.IOException

java.io.IOException
        at com.sas.grid.broker.monitor.ConnectionManager.startTKGridMon(ConnectionManager.java:247)
        at com.sas.grid.broker.core.BrokerCore.main(BrokerCore.java:267)

[ERROR@2020-06-17 11:42:41.618] Monitor thread failed to start due to configuration errors.
[ERROR@2020-06-17 11:42:41.619] No I/O produced by the grid monitor, check your SSH key configuration.