Documentation for load balancing on graphite output servers (#1469)

* Added documentation for load balancing on graphite output servers

* clarifications

* updates1

* updates2

* updates3

etc/telegraf.conf

@@ -197,6 +197,8 @@
 # # Configuration for Graphite server to send metrics to
 # [[outputs.graphite]]
 #   ## TCP endpoint for your graphite instance.
+#   ## If multiple endpoints are configured, the output will be load balanced.
+#   ## Only one of the endpoints will be written to with each iteration.
 #   servers = ["localhost:2003"]
 #   ## Prefix metrics name
 #   prefix = ""

plugins/outputs/graphite/README.md

@@ -9,6 +9,8 @@ via raw TCP.
 # Configuration for Graphite server to send metrics to
 [[outputs.graphite]]
   ## TCP endpoint for your graphite instance.
+  ## If multiple endpoints are configured, the output will be load balanced.
+  ## Only one of the endpoints will be written to with each iteration.
   servers = ["localhost:2003"]
   ## Prefix metrics name
   prefix = ""

plugins/outputs/graphite/graphite.go

@@ -25,6 +25,8 @@ type Graphite struct {
 
 var sampleConfig = `
   ## TCP endpoint for your graphite instance.
+  ## If multiple endpoints are configured, output will be load balanced.
+  ## Only one of the endpoints will be written to with each iteration.
   servers = ["localhost:2003"]
   ## Prefix metrics name
   prefix = ""