Add `Prometheus` config to scrape Router.

cookbooks/prometheus/files/etc/prometheus.d/prometheus.yml

@@ -81,6 +81,21 @@ scrape_configs:
       - target_label: __address__
         replacement: 127.0.0.1:9116  # The SNMP exporter's real hostname:port.
 
+  - job_name: 'vyos'
+    static_configs:
+      - targets:
+        - 192.168.10.1  # SNMP device.
+    metrics_path: /snmp
+    params:
+      module: [if_mib]
+    relabel_configs:
+      - source_labels: [__address__]
+        target_label: __param_target
+      - source_labels: [__param_target]
+        target_label: instance
+      - target_label: __address__
+        replacement: 127.0.0.1:9116  # The SNMP exporter's real hostname:port.
+
 alerting:
   alertmanagers:
     - static_configs: