Could not connect to server. Failed to connect to server FQDN %1 (%2:%3) Type %4 in pool %5. Continue to retry. Cause: If ...

Could not connect to server.

Failed to connect to server FQDN %1 (%2:%3) Type %4 in pool %5. 
Continue to retry.
Cause: If the specified server is removed from the topology or is currently draining or is stopped, this behavior is expected; otherwise, a network issue may have prevented the connection.
Resolution:
If this behavior is unexpected, resolve the network issues between the two servers. Ensure that the service is listening on the specified port and FQDN.

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