Documentation enhancement for #431

lib/Smokeping/probes/SSH.pm

@@ -35,8 +35,11 @@ The Probe asks the given host n-times for it's public key, where n is
 the amount specified in the config File.
 
 As part of the initialization, the probe asks 127.0.0.1 for it's public key
-and tries to parse the output. Make sure you have SSH running on the
-localhost as well.
+and tries to parse the output. This is to ensure that the specified ssh-keyscan
+binary provides output in the expected formatm before relying on it.Make sure
+you have SSH running on the localhost as well, or specify an alternative 
+init_host target to test against, that is expected to be available during any 
+smokeping restart.
 DOC
 		authors => <<'DOC',
 Christian Recktenwald <smokeping-contact@citecs.de>
@@ -123,9 +126,9 @@ sub probevars {
 				-x $val or return "ERROR: binary '$val' is not executable";
 				return undef;
 			},
-                },
+    }
 		init_host => {
-			_doc => "Host to use for initialization, defaults to IPv4 localhost 127.0.0.1",
+			_doc => "Host to use for initialization, defaults to IPv4 localhost of 127.0.0.1",
 			_example => '127.0.0.1',
 			_default => '127.0.0.1',
 		}