Linux host monitoring fails due to unsupported host key algorithms; the following type of messages are present in the agent logs:
YYYY-MM-DD hh:mm:ss.SSS WARN [HostActivitiesCreator-0] com.dell.foglight.infrastructure.delegate.AbstractUnixAgentDelegate - Unable to connect to host "hostname"
com.quest.glue.api.services.RemoteConnectionException: A connection could not be established to hostname:22
Caused by: com.quest.glue.api.services.ConnectionRefusedException: The remote machine is visible but has refused the connection
Caused by: java.io.IOException: Key exchange was not finished, connection is closed.
... 53 more
Caused by: java.io.IOException: Cannot negotiate, proposals do not match.
On the target host, '/var/log/secure' log reports that only ssh-rsa and ssh-dss are offered by the client connection.
MMM DD hh:mm:ss hostname sshd: Unable to negotiate with <FglAM IP> port 48400: no matching host key type found. Their offer: ssh-rsa,ssh-dss [preauth]
Enhancement request number FOG-2914 has been submitted to Development for consideration in a future release of Foglight for Infrastructure cartridge.