accesspoints: expose airtime information

files/wifi.lua

@@ -7,6 +7,9 @@ local function scrape()
   local metric_wifi_network_noise = metric("wifi_network_noise_dbm","gauge")
   local metric_wifi_network_signal = metric("wifi_network_signal_dbm","gauge")
   local metric_wifi_clients = metric("wifi_network_clients", "gauge")
+  local metric_wifi_airtime_total       = metric("wifi_network_airtime_total", "gauge")
+  local metric_wifi_airtime_busy        = metric("wifi_network_airtime_busy", "gauge")
+  local metric_wifi_airtime_utilization = metric("wifi_network_airtime_utilization", "gauge")
 
   local u = ubus.connect()
   local status = u:call("network.wireless", "status", {})
@@ -19,7 +22,7 @@ local function scrape()
         local labels = {
           channel = iw.channel(ifname),
           ssid = iw.ssid(ifname),
-          bssid = iw.bssid(ifname),
+          bssid = string.lower(iw.bssid(ifname)),
           mode = iw.mode(ifname),
           ifname = ifname,
           country = iw.country(ifname),
@@ -37,11 +40,16 @@ local function scrape()
         local wifi_clients = 0
         for _ in pairs(iw.assoclist(ifname)) do wifi_clients = wifi_clients +1 end
 
+        local hostapd_status = u:call("hostapd." .. ifname, "get_status", {})
+
         metric_wifi_network_quality(labels, quality)
         metric_wifi_network_noise(labels, iw.noise(ifname) or 0)
         metric_wifi_network_bitrate(labels, iw.bitrate(ifname) or 0)
         metric_wifi_network_signal(labels, iw.signal(ifname) or -255)
         metric_wifi_clients(labels, wifi_clients)
+        metric_wifi_airtime_total(labels, hostapd_status.airtime.time)
+        metric_wifi_airtime_busy(labels, hostapd_status.airtime.time_busy)
+        metric_wifi_airtime_utilization(labels, hostapd_status.airtime.utilization)
       end
     end
   end

playbook_provision_accesspoints.yml

@@ -12,6 +12,16 @@
       notify:
         - "reload {{ item | basename }}"
 
+    - name: distribute custom wifi.lua
+      copy:
+        src: files/wifi.lua
+        dest: /usr/lib/lua/prometheus-collectors/wifi.lua
+        owner: root
+        group: root
+        mode: 0744
+      notify:
+        - restart prometheus-node-exporter-lua
+
   handlers:
     - name: reload network
       service:
@@ -32,3 +42,8 @@
       service:
         name: lldpd
         state: reloaded
+
+    - name: restart prometheus-node-exporter-lua
+      service:
+        name: prometheus-node-exporter-lua
+        state: restarted