fix: improved logging and docs

Author: kbudde

README.md

@@ -37,7 +37,7 @@ The name of the file can be overriden with flag:
 
     ./rabbitmq_exporter -config-file config.example.json
 
-You can find an example [here](config.example.json).
+You can find an example [here](config.example.json). *Note:* If you are using a config file, you must provide all values as there is no default value.
 
 ### Settings
 

main.go

@@ -73,9 +73,9 @@ func main() {
 		"SKIPVERIFY":          config.InsecureSkipVerify,
 		"EXCLUDE_METRICS":     config.ExcludeMetrics,
 		"SKIP_QUEUES":         config.SkipQueues.String(),
-		"INCLUDE_QUEUES":      config.IncludeQueues,
+		"INCLUDE_QUEUES":      config.IncludeQueues.String(),
 		"SKIP_VHOST":          config.SkipVHost.String(),
-		"INCLUDE_VHOST":       config.IncludeVHost,
+		"INCLUDE_VHOST":       config.IncludeVHost.String(),
 		"RABBIT_TIMEOUT":      config.Timeout,
 		"MAX_QUEUES":          config.MaxQueues,
 		//		"RABBIT_PASSWORD": config.RABBIT_PASSWORD,