Split Web into API/Dashboard, ping, metric and Rest Provider

docs/configuration/ping.md

@@ -0,0 +1,42 @@
+# Ping Definition
+
+```toml
+# Ping definition
+[ping]
+  # Name of the related entry point
+  #
+  # Optional
+  # Default: "traefik"
+  #
+  entryPoint = "traefik"
+```
+
+| Path    | Method        | Description                                                                                        |
+|---------|---------------|----------------------------------------------------------------------------------------------------|
+| `/ping` | `GET`, `HEAD` | A simple endpoint to check for Træfik process liveness. Return a code `200` with the content: `OK` |
+
+
+!!! warning
+    Even if you have authentication configured on entry point, the `/ping` path of the api is excluded from authentication.
+
+### Example
+
+```shell
+curl -sv "http://localhost:8080/ping"
+```
+```shell
+*   Trying ::1...
+* Connected to localhost (::1) port 8080 (#0)
+> GET /ping HTTP/1.1
+> Host: localhost:8080
+> User-Agent: curl/7.43.0
+> Accept: */*
+>
+< HTTP/1.1 200 OK
+< Date: Thu, 25 Aug 2016 01:35:36 GMT
+< Content-Length: 2
+< Content-Type: text/plain; charset=utf-8
+<
+* Connection #0 to host localhost left intact
+OK
+```