ONTAP 9.5 and higher
External key manager
A key manager health monitor was introduced in ONTAP 9.5 and generates an EMS log if the external key manager is not available and when the key manager communication is re-established generates an EMS log indicating available. The key manager health monitor runs every 15 minutes.
::> event log show -message-name km.keyserver.notavailable
05/27/2020 13:10:08 lab-rtp ALERT km.keyserver.notavailable: The external key
management server "10.225.89.34" is not available, status: "not-responding".
::> event log show -message-name km.keyserver.available
05/27/2020 14:25:28 lab-rtp NOTICE km.keyserver.available: The external key
management server "10.225.89.34" is now available.