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point to right IP

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Jordan Sokolic 2020-03-07 13:10:33 +02:00
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monitoring/README.md
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@ -5,35 +5,41 @@ 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. A `docker-compose` script for ingesting `collectd` output from OpenWRT to InfluxDB, and using Grafana to build pretty dashboards.
It's networked, so it doesn't need to be run on the same machine as OpenWRT, but it probably should. 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 ## 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 $INFLUXDB_HOST
```
### On OpenWRT ### On OpenWRT
* Install `collectd` and any additional plugins you want (`collectd-mod-*`) on OpenWRT, plus `luci-app-statistics` for configuration from LuCI * Install `collectd` and any additional plugins you want (`collectd-mod-*`) on OpenWRT, plus `luci-app-statistics` for configuration from LuCI
``` ```
# opkg install luci-app-statistics collectd # opkg install luci-app-statistics collectd
``` ```
* Set up network export (make sure `LAN_HOST` is set) * Set up network export (make sure `INFLUXDB_HOST` from above is set)
``` ```
# cat <<EOF | uci batch # cat <<EOF | uci batch
set luci_statistics.influxdb=collectd_network_server set luci_statistics.influxdb=collectd_network_server
set luci_statistics.influxdb.port='25826' set luci_statistics.influxdb.port='25826'
set luci_statistics.influxdb.host="${LAN_HOST}" set luci_statistics.influxdb.host="${INFLUXDB_HOST}"
EOF EOF
$ uci commit # uci commit
$ /etc/init.d/luci_statistics restart # /etc/init.d/luci_statistics restart
```
### On host
* get `types.db` (not sure if this is totally necessary)
```
$ scp openwrt.home:/usr/share/collectd/types.db \
influxdb/
```
* from the host, launch InfluxDB and Grafana
```
$ docker-compose up -d
``` ```