added the influx ping command, resolves #183

content/v2.0/reference/cli/influx/_index.md

@@ -49,6 +49,7 @@ retrieving authentication tokens._
 | [bucket](/v2.0/reference/cli/influx/bucket) | Bucket management commands                           |
 | [help](/v2.0/reference/cli/influx/help)     | Help about any command                               |
 | [org](/v2.0/reference/cli/influx/org)       | Organization management commands                     |
+| [ping](/v2.0/reference/cli/influx/ping)     | Check the InfluxDB `/health` endpoint                |
 | [query](/v2.0/reference/cli/influx/query)   | Execute a Flux query                                 |
 | [repl](/v2.0/reference/cli/influx/repl)     | Interactive REPL (read-eval-print-loop)              |
 | [setup](/v2.0/reference/cli/influx/setup)   | Create default username, password, org, bucket, etc. |

content/v2.0/reference/cli/influx/ping/_index.md

@@ -0,0 +1,33 @@
+---
+title: influx ping – Check the health of InfluxDB
+description: >
+  The `influx ping` command checks the health of a running InfluxDB instance by
+  querying the `/health` endpoint.
+menu:
+  v2_0_ref:
+    name: influx ping
+    parent: influx
+weight: 101
+v2.0/tags: [ping, health]
+---
+
+The `influx ping` command checks the health of a running InfluxDB instance by
+querying the `/health` endpoint.
+It does not require an authorization token.
+
+## Usage
+```
+influx ping [flags]
+```
+
+## Flags
+| Flag           | Description                 |
+|:----           |:-----------                 |
+| `-h`, `--help` | Help for the `ping` command |
+
+## Global Flags
+| Global flag     | Description                                                | Input type |
+|:-----------     |:-----------                                                |:----------:|
+| `--host`        | HTTP address of InfluxDB (default `http://localhost:9999`) | string     |
+| `--local`       | Run commands locally against the filesystem                |            |
+| `-t`, `--token` | API token to be used throughout client calls               | string     |