Update kibana docs

plugins/inputs/EXAMPLE_README.md

@@ -1,6 +1,6 @@
 # Example Input Plugin
 
-The example plugin gathers metrics about example things.  This description
+The `example` plugin gathers metrics about example things.  This description
 explains at a high level what the plugin does and provides links to where
 additional information can be found.
 
@@ -41,6 +41,10 @@ mapped to the output.
     - tag3
   - fields:
     - field3 (integer, bytes)
+    - field4 (integer, green=1 yellow=2 red=3)
+    - field5 (string)
+    - field6 (float)
+    - field7 (boolean)
 
 ### Sample Queries
 

plugins/inputs/kibana/README.md

@@ -1,15 +1,17 @@
-# Kibana input plugin
+# Kibana Input Plugin
 
-The [kibana](https://www.elastic.co/) plugin queries Kibana status API to
-obtain the health status of Kibana and some useful metrics.
+The `kibana` plugin queries the [Kibana][] API to obtain the service status.
 
-This plugin has been tested and works on Kibana 6.x versions.
+- Telegraf minimum version: 1.8
+- Kibana minimum tested version: 6.0
+
+[Kibana]: https://www.elastic.co/
 
 ### Configuration
 
 ```toml
 [[inputs.kibana]]
-  ## specify a list of one or more Kibana servers
+  ## Specify a list of one or more Kibana servers
   servers = ["http://localhost:5601"]
 
   ## Timeout for HTTP requests
@@ -27,38 +29,27 @@ This plugin has been tested and works on Kibana 6.x versions.
   # insecure_skip_verify = false
 ```
 
-### Status mappings
-
-When reporting health (green/yellow/red), additional field `status_code`
-is reported. Field contains mapping from status:string to status_code:int
-with following rules:
-
-- `green` - 1
-- `yellow` - 2
-- `red` - 3
-- `unknown` - 0
-
-### Measurements & Fields
+### Metrics
 
 - kibana
-  - status_code: integer (1, 2, 3, 0)
-  - heap_total_bytes: integer
-  - heap_max_bytes: integer
-  - heap_used_bytes: integer
-  - uptime_ms: integer
-  - response_time_avg_ms: float
-  - response_time_max_ms: integer
-  - concurrent_connections: integer
-  - requests_per_sec: float
-
-### Tags
-
+  - tags:
     - name (Kibana reported name)
     - source (Kibana server hostname or IP)
     - status (Kibana health: green, yellow, red)
     - version (Kibana version)
+  - fields:
+    - status_code (integer, green=1 yellow=2 red=3 unknown=0)
+    - heap_total_bytes (integer)
+    - heap_max_bytes (integer; deprecated in 1.13.3: use `heap_total_bytes` field)
+    - heap_used_bytes (integer)
+    - uptime_ms (integer)
+    - response_time_avg_ms (float)
+    - response_time_max_ms (integer)
+    - concurrent_connections (integer)
+    - requests_per_sec (float)
 
 ### Example Output
+
 ```
 kibana,host=myhost,name=my-kibana,source=localhost:5601,status=green,version=6.5.4 concurrent_connections=8i,heap_max_bytes=447778816i,heap_total_bytes=447778816i,heap_used_bytes=380603352i,requests_per_sec=1,response_time_avg_ms=57.6,response_time_max_ms=220i,status_code=1i,uptime_ms=6717489805i 1534864502000000000
 ```

plugins/inputs/kibana/kibana.go

@@ -79,7 +79,7 @@ type heap struct {
 }
 
 const sampleConfig = `
-  ## specify a list of one or more Kibana servers
+  ## Specify a list of one or more Kibana servers
   servers = ["http://localhost:5601"]
 
   ## Timeout for HTTP requests

plugins/inputs/kibana/kibana_test.go

@@ -63,7 +63,7 @@ func checkKibanaStatusResult(version string, t *testing.T, acc *testutil.Accumul
 func TestGather(t *testing.T) {
 	ks := newKibanahWithClient()
 	ks.Servers = []string{"http://example.com:5601"}
-	// Unit test for Kibana version < 6.5
+	// Unit test for Kibana version < 6.4
 	ks.client.Transport = newTransportMock(http.StatusOK, kibanaStatusResponse6_3)
 	var acc1 testutil.Accumulator
 	if err := acc1.GatherError(ks.Gather); err != nil {
@@ -71,14 +71,13 @@ func TestGather(t *testing.T) {
 	}
 	checkKibanaStatusResult(defaultTags6_3()["version"], t, &acc1)
 
-	//Unit test for Kibana version >= 6.5
+	//Unit test for Kibana version >= 6.4
 	ks.client.Transport = newTransportMock(http.StatusOK, kibanaStatusResponse6_5)
 	var acc2 testutil.Accumulator
 	if err := acc2.GatherError(ks.Gather); err != nil {
 		t.Fatal(err)
 	}
 	checkKibanaStatusResult(defaultTags6_5()["version"], t, &acc2)
-
 }
 
 func newKibanahWithClient() *Kibana {