--- accesspoint_wired_interface: eth0 accesspoint_wireless_device_paths: 2g4: "platform/qca956x_wmac" 5g: "pci0000:00/0000:00:00.0" accesspoint_wireless_frequencies: - 2g4 - 5g accesspoint_network_base: "{{ accesspoint_network_base_yaml | from_yaml }}" accesspoint_network_base_yaml: | - name: globals 'globals' options: ula_prefix: "fc{{ '%02x:%04x:%04x' | format((255 | random(seed=inventory_hostname + '0')), (65535 | random(seed=inventory_hostname + '1')), (65535 | random(seed=inventory_hostname + '2'))) }}::/48" - name: interface 'loopback' options: device: lo proto: static ipaddr: 127.0.0.1 netmask: 255.0.0.0 {% if 'vlan' in network_mgmt_zone %} - name: device options: type: 8021q ifname: "{{ accesspoint_wired_interface }}" vid: {{ network_mgmt_zone.vlan }} name: "{{ accesspoint_wired_interface }}.{{ network_mgmt_zone.vlan }}" {% endif %} - name: interface 'mgmt' options: device: "{{ accesspoint_wired_interface }}{% if 'vlan' in network_mgmt_zone %}.{{ network_mgmt_zone.vlan }}{% endif %}" accept_ra: 0 proto: static ipaddr: "{{ network_mgmt_zone.prefix | ipaddr(network_mgmt_zone.offsets[inventory_hostname]) | ipaddr('address') }}" netmask: "{{ network_mgmt_zone.prefix | ipaddr('netmask') }}" accesspoint_network_zones: "{{ accesspoint_network_zones_yaml | from_yaml }}" accesspoint_network_zones_yaml: | {% for zone_name in accesspoint_zones.keys() %} - name: device options: type: 8021q ifname: "{{ accesspoint_wired_interface }}" vid: {{ network_zones[zone_name].vlan }} name: "{{ accesspoint_wired_interface }}.{{ network_zones[zone_name].vlan }}" - name: device options: type: bridge name: "br-{{ zone_name }}" ports: - "{{ accesspoint_wired_interface }}.{{ network_zones[zone_name].vlan }}" - name: "interface '{{ zone_name }}'" options: device: "br-{{ zone_name }}" accept_ra: 0 proto: none {% endfor %} accesspoint_wireless_devices: - name: wifi-device 'radio5g' options: type: 'mac80211' channel: "{{ accesspoint_wifi_channels['5g'][inventory_hostname] }}" hwmode: '11a' country: AT path: "{{ accesspoint_wireless_device_paths['5g'] }}" htmode: 'VHT80' cell_density: '0' - name: wifi-device 'radio2g4' options: type: 'mac80211' channel: "{{ accesspoint_wifi_channels['2g4'][inventory_hostname] }}" hwmode: '11g' country: AT path: "{{ accesspoint_wireless_device_paths['2g4'] }}" htmode: 'HT20' cell_density: '0' ## TODO: set up 802.11r see: ## * https://www.reddit.com/r/openwrt/comments/515oea/finally_got_80211r_roaming_working/ ## * https://gist.github.com/lg/998d3e908d547bd9972a6bb604df377b accesspoint_wireless_ifaces: "{{ accesspoint_wireless_ifaces_yaml | from_yaml }}" accesspoint_wireless_ifaces_yaml: | {% for zone in accesspoint_zones.keys() %} {% for freq in accesspoint_wireless_frequencies %} - name: wifi-iface '{{ zone }}{{ freq }}' options: device: 'radio{{ freq }}' network: '{{ zone }}' mode: 'ap' disassoc_low_ack: '1' rsn_preauth: '1' ssid: '{{ accesspoint_zones[zone].ssid }}' encryption: '{{ accesspoint_zones[zone].encryption }}' key: '{{ accesspoint_zones[zone].key }}' {% endfor %} {% endfor %} install_playbook: openwrt openwrt_variant: openwrt openwrt_release: 21.02.0 openwrt_arch: ath79 openwrt_target: generic openwrt_profile: ubnt_unifiac-lite openwrt_output_image_suffixes: - "{{ openwrt_target }}-{{ openwrt_profile }}-squashfs-sysupgrade.bin" openwrt_packages_remove: - ppp - ppp-mod-pppoe - dnsmasq - firewall - odhcpd - odhcpd-ipv6only openwrt_packages_add: - haveged - htop - ip - less - nano - tcpdump-mini - horst - prometheus-node-exporter-lua - prometheus-node-exporter-lua-nat_traffic - prometheus-node-exporter-lua-netstat - prometheus-node-exporter-lua-openwrt ## we will install a custom version of these collectors, see below #- prometheus-node-exporter-lua-wifi #- prometheus-node-exporter-lua-wifi_stations ## manually install dependencies for wifi-collectors - libiwinfo-lua - libubus-lua openwrt_mixin: /etc/sysctl.conf: content: | # Defaults are configured in /etc/sysctl.d/* and can be customized in this file # # disable IP forwarding, we don't need it since we are # only an AP that bridges VLANs to Wifi SSIDs net.ipv4.conf.default.forwarding=0 net.ipv4.conf.all.forwarding=0 net.ipv4.ip_forward=0 net.ipv6.conf.default.forwarding=0 net.ipv6.conf.all.forwarding=0 /etc/dropbear/authorized_keys: content: "{{ ssh_keys_root | join('\n') }}\n" /etc/htoprc: file: "{{ global_files_dir }}/common/htoprc" /etc/rc.d/S22network-fw: link: "../init.d/network-fw" /etc/rc.d/K91network-fw: link: "../init.d/network-fw" /etc/init.d/network-fw: mode: "0755" content: | #!/bin/sh /etc/rc.common START=22 STOP=91 MGMT_IF=$(uci get network.mgmt.device) MGMT_IPADDR=$(uci get network.mgmt.ipaddr) MGMT_NETMASK=$(uci get network.mgmt.netmask) start() { iptables -A INPUT -i lo -j ACCEPT iptables -A INPUT -i "$MGMT_IF" -d "$MGMT_IPADDR" -s "$MGMT_IPADDR/$MGMT_NETMASK" -j ACCEPT iptables -P INPUT DROP iptables -P FORWARD DROP } stop() { iptables -P INPUT ACCEPT iptables -F INPUT iptables -P FORWARD ACCEPT } /usr/lib/lua/prometheus-collectors/wifi.lua: mode: "0755" content: | -- This is a custom version of the upstream wifi and wifi_stations collectors. We want -- to know the number of stations connected but for privacy and metric cardinality -- reasons we don't care for MAC addresses and other details of all connected stations. local ubus = require "ubus" local iwinfo = require "iwinfo" local function scrape() local metric_wifi_network_quality = metric("wifi_network_quality","gauge") local metric_wifi_network_bitrate = metric("wifi_network_bitrate","gauge") 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_stations = metric("wifi_stations", "gauge") local u = ubus.connect() local status = u:call("network.wireless", "status", {}) for dev, dev_table in pairs(status) do for _, intf in ipairs(dev_table['interfaces']) do local ifname = intf['ifname'] if ifname ~= nil then local iw = iwinfo[iwinfo.type(ifname)] local labels = { channel = iw.channel(ifname), ssid = iw.ssid(ifname), bssid = iw.bssid(ifname), mode = iw.mode(ifname), ifname = ifname, country = iw.country(ifname), frequency = iw.frequency(ifname), device = dev, } local qc = iw.quality(ifname) or 0 local qm = iw.quality_max(ifname) or 0 local quality = 0 if qc > 0 and qm > 0 then quality = math.floor((100 / qm) * qc) end local stations = 0 local assoclist = iw.assoclist(ifname) for _, _ in pairs(assoclist) do stations = stations + 1 end 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_stations(labels, stations) end end end end return { scrape = scrape } /usr/bin/list-stations: mode: "0755" content: | #!/bin/sh interfaces=$(iw dev | grep "Interface " | cut -d ' ' -f2 | sort) for interface in $interfaces; do bssid=$(iw $interface info | grep "addr " | cut -d ' ' -f2) essid=$(iw $interface info | grep "ssid " | cut -d ' ' -f2-) channel=$(iw $interface info | grep "channel " | cut -d ' ' -f2-) echo "$interface ($bssid, ssid: '$essid', channel: $channel)" iw $interface station dump | grep "^Station" | awk '{ print(" - "$2) }' echo "" done exit 0 openwrt_uci: system: - name: system options: hostname: '{{ inventory_hostname }}' timezone: 'CET-1CEST,M3.5.0,M10.5.0/3' ttylogin: '0' log_size: '64' urandom_seed: '0' - name: timeserver 'ntp' options: enabled: '0' enable_server: '0' server: - '0.lede.pool.ntp.org' - '1.lede.pool.ntp.org' - '2.lede.pool.ntp.org' - '3.lede.pool.ntp.org' - name: led options: sysfs: blue:dome trigger: none - name: led options: sysfs: white:dome trigger: default-on default: 0 dropbear: - name: dropbear options: PasswordAuth: 'off' RootPasswordAuth: 'off' Port: '{{ ansible_port }}' prometheus-node-exporter-lua: - name: prometheus-node-exporter-lua 'main' options: listen_interface: 'mgmt' listen_ipv6: '0' listen_port: '9100' network: "{{ accesspoint_network_base + accesspoint_network_zones }}" wireless: "{{ accesspoint_wireless_devices + accesspoint_wireless_ifaces }}"