diff options
Diffstat (limited to 'collectors/charts.d.plugin/ap')
| -rw-r--r-- | collectors/charts.d.plugin/ap/Makefile.inc | 13 | ||||
| -rw-r--r-- | collectors/charts.d.plugin/ap/README.md | 99 | ||||
| -rw-r--r-- | collectors/charts.d.plugin/ap/ap.chart.sh | 179 | ||||
| -rw-r--r-- | collectors/charts.d.plugin/ap/ap.conf | 23 |
4 files changed, 314 insertions, 0 deletions
diff --git a/collectors/charts.d.plugin/ap/Makefile.inc b/collectors/charts.d.plugin/ap/Makefile.inc new file mode 100644 index 0000000..a2dd375 --- /dev/null +++ b/collectors/charts.d.plugin/ap/Makefile.inc @@ -0,0 +1,13 @@ +# SPDX-License-Identifier: GPL-3.0-or-later + +# THIS IS NOT A COMPLETE Makefile +# IT IS INCLUDED BY ITS PARENT'S Makefile.am +# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT + +# install these files +dist_charts_DATA += ap/ap.chart.sh +dist_chartsconfig_DATA += ap/ap.conf + +# do not install these files, but include them in the distribution +dist_noinst_DATA += ap/README.md ap/Makefile.inc + diff --git a/collectors/charts.d.plugin/ap/README.md b/collectors/charts.d.plugin/ap/README.md new file mode 100644 index 0000000..a7953a5 --- /dev/null +++ b/collectors/charts.d.plugin/ap/README.md @@ -0,0 +1,99 @@ +<!-- +title: "Access point monitoring with Netdata" +custom_edit_url: https://github.com/netdata/netdata/edit/master/collectors/charts.d.plugin/ap/README.md +sidebar_label: "Access points" +--> + +# Access point monitoring with Netdata + +The `ap` collector visualizes data related to access points. + +## Example Netdata charts + + + +## How it works + +It does the following: + +1. Runs `iw dev` searching for interfaces that have `type AP`. + + From the same output it collects the SSIDs each AP supports by looking for lines `ssid NAME`. + + Example: + +```sh +# iw dev +phy#0 + Interface wlan0 + ifindex 3 + wdev 0x1 + addr 7c:dd:90:77:34:2a + ssid TSAOUSIS + type AP + channel 7 (2442 MHz), width: 20 MHz, center1: 2442 MHz +``` + +2. For each interface found, it runs `iw INTERFACE station dump`. + + From the output is collects: + + - rx/tx bytes + - rx/tx packets + - tx retries + - tx failed + - signal strength + - rx/tx bitrate + - expected throughput + + Example: + +```sh +# iw wlan0 station dump +Station 40:b8:37:5a:ed:5e (on wlan0) + inactive time: 910 ms + rx bytes: 15588897 + rx packets: 127772 + tx bytes: 52257763 + tx packets: 95802 + tx retries: 2162 + tx failed: 28 + signal: -43 dBm + signal avg: -43 dBm + tx bitrate: 65.0 MBit/s MCS 7 + rx bitrate: 1.0 MBit/s + expected throughput: 32.125Mbps + authorized: yes + authenticated: yes + preamble: long + WMM/WME: yes + MFP: no + TDLS peer: no +``` + +3. For each interface found, it creates 6 charts: + + - Number of Connected clients + - Bandwidth for all clients + - Packets for all clients + - Transmit Issues for all clients + - Average Signal among all clients + - Average Bitrate (including average expected throughput) among all clients + +## Configuration + +Edit the `charts.d/ap.conf` configuration file using `edit-config` from the Netdata [config +directory](/docs/configure/nodes.md), which is typically at `/etc/netdata`. + +```bash +cd /etc/netdata # Replace this path with your Netdata config directory, if different +sudo ./edit-config charts.d/ap.conf +``` + +You can only set `ap_update_every=NUMBER` to change the data collection frequency. + +## Auto-detection + +The plugin is able to auto-detect if you are running access points on your linux box. + + diff --git a/collectors/charts.d.plugin/ap/ap.chart.sh b/collectors/charts.d.plugin/ap/ap.chart.sh new file mode 100644 index 0000000..80c9dc6 --- /dev/null +++ b/collectors/charts.d.plugin/ap/ap.chart.sh @@ -0,0 +1,179 @@ +# shellcheck shell=bash +# no need for shebang - this file is loaded from charts.d.plugin +# SPDX-License-Identifier: GPL-3.0-or-later + +# netdata +# real-time performance and health monitoring, done right! +# (C) 2016 Costa Tsaousis <costa@tsaousis.gr> +# + +# _update_every is a special variable - it holds the number of seconds +# between the calls of the _update() function +ap_update_every= +ap_priority=6900 + +declare -A ap_devs=() + +# _check is called once, to find out if this chart should be enabled or not +ap_check() { + require_cmd iw || return 1 + local ev + ev=$(run iw dev | awk ' + BEGIN { + i = ""; + ssid = ""; + ap = 0; + } + /^[ \t]+Interface / { + if( ap == 1 ) { + print "ap_devs[" i "]=\"" ssid "\"" + } + + i = $2; + ssid = ""; + ap = 0; + } + /^[ \t]+ssid / { ssid = $2; } + /^[ \t]+type AP$/ { ap = 1; } + END { + if( ap == 1 ) { + print "ap_devs[" i "]=\"" ssid "\"" + } + } + ') + eval "${ev}" + + # this should return: + # - 0 to enable the chart + # - 1 to disable the chart + + [ ${#ap_devs[@]} -gt 0 ] && return 0 + error "no devices found in AP mode, with 'iw dev'" + return 1 +} + +# _create is called once, to create the charts +ap_create() { + local ssid dev + + for dev in "${!ap_devs[@]}"; do + ssid="${ap_devs[${dev}]}" + + # create the chart with 3 dimensions + cat << EOF +CHART ap_clients.${dev} '' "Connected clients to ${ssid} on ${dev}" "clients" ${dev} ap.clients line $((ap_priority + 1)) $ap_update_every '' '' 'ap' +DIMENSION clients '' absolute 1 1 + +CHART ap_bandwidth.${dev} '' "Bandwidth for ${ssid} on ${dev}" "kilobits/s" ${dev} ap.net area $((ap_priority + 2)) $ap_update_every '' '' 'ap' +DIMENSION received '' incremental 8 1024 +DIMENSION sent '' incremental -8 1024 + +CHART ap_packets.${dev} '' "Packets for ${ssid} on ${dev}" "packets/s" ${dev} ap.packets line $((ap_priority + 3)) $ap_update_every '' '' 'ap' +DIMENSION received '' incremental 1 1 +DIMENSION sent '' incremental -1 1 + +CHART ap_issues.${dev} '' "Transmit Issues for ${ssid} on ${dev}" "issues/s" ${dev} ap.issues line $((ap_priority + 4)) $ap_update_every '' '' 'ap' +DIMENSION retries 'tx retries' incremental 1 1 +DIMENSION failures 'tx failures' incremental -1 1 + +CHART ap_signal.${dev} '' "Average Signal for ${ssid} on ${dev}" "dBm" ${dev} ap.signal line $((ap_priority + 5)) $ap_update_every '' '' 'ap' +DIMENSION signal 'average signal' absolute 1 1000 + +CHART ap_bitrate.${dev} '' "Bitrate for ${ssid} on ${dev}" "Mbps" ${dev} ap.bitrate line $((ap_priority + 6)) $ap_update_every '' '' 'ap' +DIMENSION receive '' absolute 1 1000 +DIMENSION transmit '' absolute -1 1000 +DIMENSION expected 'expected throughput' absolute 1 1000 +EOF + done + + return 0 +} + +# _update is called continuously, to collect the values +ap_update() { + # the first argument to this function is the microseconds since last update + # pass this parameter to the BEGIN statement (see below). + + # do all the work to collect / calculate the values + # for each dimension + # remember: KEEP IT SIMPLE AND SHORT + + for dev in "${!ap_devs[@]}"; do + echo + echo "DEVICE ${dev}" + iw "${dev}" station dump + done | awk ' + function zero_data() { + dev = ""; + c = 0; + rb = 0; + tb = 0; + rp = 0; + tp = 0; + tr = 0; + tf = 0; + tt = 0; + rt = 0; + s = 0; + g = 0; + e = 0; + } + function print_device() { + if(dev != "" && length(dev) > 0) { + print "BEGIN ap_clients." dev; + print "SET clients = " c; + print "END"; + print "BEGIN ap_bandwidth." dev; + print "SET received = " rb; + print "SET sent = " tb; + print "END"; + print "BEGIN ap_packets." dev; + print "SET received = " rp; + print "SET sent = " tp; + print "END"; + print "BEGIN ap_issues." dev; + print "SET retries = " tr; + print "SET failures = " tf; + print "END"; + + if( c == 0 ) c = 1; + print "BEGIN ap_signal." dev; + print "SET signal = " int(s / c); + print "END"; + print "BEGIN ap_bitrate." dev; + print "SET receive = " int(rt / c); + print "SET transmit = " int(tt / c); + print "SET expected = " int(e / c); + print "END"; + } + zero_data(); + } + BEGIN { + zero_data(); + } + /^DEVICE / { + print_device(); + dev = $2; + } + /^Station/ { c++; } + /^[ \t]+rx bytes:/ { rb += $3; } + /^[ \t]+tx bytes:/ { tb += $3; } + /^[ \t]+rx packets:/ { rp += $3; } + /^[ \t]+tx packets:/ { tp += $3; } + /^[ \t]+tx retries:/ { tr += $3; } + /^[ \t]+tx failed:/ { tf += $3; } + /^[ \t]+signal:/ { x = $2; s += x * 1000; } + /^[ \t]+rx bitrate:/ { x = $3; rt += x * 1000; } + /^[ \t]+tx bitrate:/ { x = $3; tt += x * 1000; } + /^[ \t]+expected throughput:(.*)Mbps/ { + x=$3; + sub(/Mbps/, "", x); + e += x * 1000; + } + END { + print_device(); + } + ' + + return 0 +} diff --git a/collectors/charts.d.plugin/ap/ap.conf b/collectors/charts.d.plugin/ap/ap.conf new file mode 100644 index 0000000..38fc157 --- /dev/null +++ b/collectors/charts.d.plugin/ap/ap.conf @@ -0,0 +1,23 @@ +# no need for shebang - this file is loaded from charts.d.plugin + +# netdata +# real-time performance and health monitoring, done right! +# (C) 2018 Costa Tsaousis <costa@tsaousis.gr> +# GPL v3+ + +# nothing fancy to configure. +# this module will run +# iw dev - to find wireless devices in AP mode +# iw ${dev} station dump - to get connected clients +# based on the above, it generates several charts + +# the data collection frequency +# if unset, will inherit the netdata update frequency +#ap_update_every= + +# the charts priority on the dashboard +#ap_priority=6900 + +# the number of retries to do in case of failure +# before disabling the module +#ap_retries=10 |