improve docs for installing

README.md

@@ -3,3 +3,45 @@ An Prometheus Exporter for OvenMediaEngine
 
 (it provides also a small API-Client for OvenMediaEngine)
 Be welcome to improve it.
+
+## Configure OvenMediaEngine
+
+This Exporter use the REST-API of OvenMediaEngine,
+to setting it up, that a look in there Documentation [OvenMediaEngine REST-API](
+https://airensoft.gitbook.io/ovenmediaengine/rest-api).
+
+## Setup Exporter
+
+### Compile
+
+Install [golang](https://golang.org/doc/install).
+
+Run:
+`go install -v dev.sum7.eu/genofire/oven-exporter@latest`
+
+### Configuration
+Read comments in [config_example.toml](config_example.toml) for more information.
+
+Maybe a good place to store this file is: `/etc/ovenmediaengine/exporter.conf`
+
+### Startup
+Create a systemd.service file e.g. under `/etc/systemd/system/oven-exporter.service` with maybe a content like this:
+
+```ini
+[Unit]
+Description = Prometheus exporter for OvenMediaEngine
+
+[Service]
+Type=simple
+ExecStart=/usr/local/bin/oven-exporter -c /etc/ovenmediaengine/exporter.conf
+Restart=always
+RestartSec=5s
+Environment=PATH=/usr/bin:/usr/local/bin
+
+[Install]
+WantedBy=multi-user.target
+```
+PS: maybe you need to adjust the binary path and configuration path.
+
+Start and enable on boot:
+`systemctl enable --now oven-exporter.service`

config_example.toml

@@ -1,6 +1,9 @@
+# (Address +) Port where the Exporter is listen for Prometheus request
 listen = ":8080"
 
 [api]
+# URL to REST-API of OvenMediaEngine 
 url = "http://1.2.3.4:8081"
+# AccessToken of OvenMediaEngine's REST-API
 token = "ome-access-token"