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Monitoring with InfluxDB + Grafana

[11858] https://grafana.com/grafana/dashboards/11858

A docker-compose script for ingesting collectd output from OpenWRT to InfluxDB, and using Grafana to build pretty dashboards.

Docker assigns IP addresses sequentially. By default OpenWRT assigns DHCP addresses with an offset of 100, so we have a very high chance that the Docker-assigned addresses will not overlap the OpenWRT DHCP addresses. But it's something we need to be aware of.

Steps

On host

  • launch InfluxDB and Grafana
$ docker-compose up -d
  • get InfluxDB IP address
$ INFLUXDB_HOST=$(docker inspect monitoring_influxdb_1 -f '
  {{- range .NetworkSettings.Networks}}
  {{- .IPAddress -}}
  {{end -}}')

$ echo $INFLUXDB_HOST

On OpenWRT

  • Install collectd and any additional plugins you want (collectd-mod-*) on OpenWRT, plus luci-app-statistics for configuration from LuCI
# opkg install luci-app-statistics collectd
  • Set up network export (make sure INFLUXDB_HOST from above is set)
# cat <<EOF | uci batch
set luci_statistics.influxdb=collectd_network_server
set luci_statistics.influxdb.port='25826'
set luci_statistics.influxdb.host="${INFLUXDB_HOST}"
EOF
# uci commit
# /etc/init.d/luci_statistics restart