226 lines
9.9 KiB
Markdown
226 lines
9.9 KiB
Markdown
# PI-Hole Prometheus Exporter
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/badge.svg)
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[](https://godoc.org/github.com/eko/pihole-exporter)
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[](https://goreportcard.com/report/github.com/eko/pihole-exporter)
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This is a Prometheus exporter for [PI-Hole](https://pi-hole.net/)'s Raspberry PI ad blocker.
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Available Grafana Dasboards:
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* Prometheus: [Grafana Labs](https://grafana.com/dashboards/10176) / [JSON/Github](https://raw.githubusercontent.com/eko/pihole-exporter/master/grafana/dashboard.json) --> [Preview](https://raw.githubusercontent.com/eko/pihole-exporter/master/dashboard.jpg)
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* InfluxDB 2 (Flux): [Grafana Labs](https://grafana.com/dashboards/17094) / [JSON/Github](https://raw.githubusercontent.com/eko/pihole-exporter/master/grafana/dashboard-influxdb2.json) --> [Preview](https://raw.githubusercontent.com/eko/pihole-exporter/master/dashboard-influxdb2.png)
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## Prerequisites
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* [Go](https://golang.org/doc/)
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## Installation
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### Download binary
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You can download the latest version of the binary built for your architecture here:
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* Architecture **i386** [
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[Linux](https://github.com/eko/pihole-exporter/releases/latest/download/pihole_exporter-linux-386) /
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[Windows](https://github.com/eko/pihole-exporter/releases/latest/download/pihole_exporter-windows-386.exe)
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]
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* Architecture **amd64** [
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[Darwin](https://github.com/eko/pihole-exporter/releases/latest/download/pihole_exporter-darwin-amd64) /
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[Linux](https://github.com/eko/pihole-exporter/releases/latest/download/pihole_exporter-linux-amd64) /
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[Windows](https://github.com/eko/pihole-exporter/releases/latest/download/pihole_exporter-windows-amd64.exe)
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]
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* Architecture **arm** [
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[Darwin](https://github.com/eko/pihole-exporter/releases/latest/download/pihole_exporter-darwin-arm64) /
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[Linux](https://github.com/eko/pihole-exporter/releases/latest/download/pihole_exporter-linux-arm)
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]
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### Using Docker
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The exporter is also available as a [Docker image](https://hub.docker.com/r/ekofr/pihole-exporter).
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You can run it using the following example and pass configuration environment variables:
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```
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$ docker run \
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-e 'PIHOLE_HOSTNAME=192.168.1.2' \
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-e 'PIHOLE_PASSWORD=mypassword' \
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-e 'PORT=9617' \
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-p 9617:9617 \
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ekofr/pihole-exporter:latest
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```
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Or use PiHole's `WEBPASSWORD` as an API token instead of the password
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```bash
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$ API_TOKEN=$(awk -F= -v key="WEBPASSWORD" '$1==key {print $2}' /etc/pihole/setupVars.conf)
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$ docker run \
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-e 'PIHOLE_HOSTNAME=192.168.1.2' \
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-e "PIHOLE_API_TOKEN=$API_TOKEN" \
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-e 'PORT=9617' \
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ekofr/pihole-exporter:latest
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```
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If you are running pi-hole behind https, you must both set the `PIHOLE_PROTOCOL` environment variable
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as well as include your ssl certificates to the docker image as it does not have any baked in:
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```
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$ docker run \
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-e 'PIHOLE_PROTOCOL=https' \
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-e 'PIHOLE_HOSTNAME=192.168.1.2' \
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-e 'PIHOLE_PASSWORD=mypassword' \
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-e 'PORT=9617' \
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-v '/etc/ssl/certs:/etc/ssl/certs:ro' \
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-p 9617:9617 \
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ekofr/pihole-exporter:latest
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```
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A single instance of pihole-exporter can monitor multiple pi-holes instances.
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To do so, you can specify a list of hostnames, protocols, passwords/API tokens and ports by separating them with commas in their respective environment variable:
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```
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$ docker run \
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-e 'PIHOLE_PROTOCOL="http,http,http" \
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-e 'PIHOLE_HOSTNAME="192.168.1.2,192.168.1.3,192.168.1.4"' \
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-e "PIHOLE_API_TOKEN="$API_TOKEN1,$API_TOKEN2,$API_TOKEN3" \
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-e "PIHOLE_PORT="8080,8081,8080" \
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-e 'PORT=9617' \
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ekofr/pihole-exporter:latest
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```
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If port, protocol and API token/password is the same for all instances, you can specify them only once:
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```
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$ docker run \
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-e 'PIHOLE_PROTOCOL=",http" \
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-e 'PIHOLE_HOSTNAME="192.168.1.2,192.168.1.3,192.168.1.4"' \
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-e "PIHOLE_API_TOKEN="$API_TOKEN" \
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-e "PIHOLE_PORT="8080" \
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-e 'PORT=9617' \
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ekofr/pihole-exporter:latest
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```
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### From sources
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Optionally, you can download and build it from the sources. You have to retrieve the project sources by using one of the following way:
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```bash
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$ go get -u github.com/eko/pihole-exporter
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# or
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$ git clone https://github.com/eko/pihole-exporter.git
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```
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Install the needed vendors:
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```
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$ GO111MODULE=on go mod vendor
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```
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Then, build the binary (here, an example to run on Raspberry PI ARM architecture):
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```bash
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$ GOOS=linux GOARCH=arm GOARM=7 go build -o pihole_exporter .
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```
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## Usage
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In order to run the exporter, type the following command (arguments are optional):
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Using a password
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```bash
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$ ./pihole_exporter -pihole_hostname 192.168.1.10 -pihole_password azerty
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```
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Or use PiHole's `WEBPASSWORD` as an API token instead of the password
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```bash
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$ API_TOKEN=$(awk -F= -v key="WEBPASSWORD" '$1==key {print $2}' /etc/pihole/setupVars.conf)
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$ ./pihole_exporter -pihole_hostname 192.168.1.10 -pihole_api_token $API_TOKEN
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```
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```bash
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2019/05/09 20:19:52 ------------------------------------
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2019/05/09 20:19:52 - PI-Hole exporter configuration -
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2019/05/09 20:19:52 ------------------------------------
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2019/05/09 20:19:52 PIHoleHostname : 192.168.1.10
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2019/05/09 20:19:52 PIHolePassword : azerty
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2019/05/09 20:19:52 Port : 9617
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2019/05/09 20:19:52 Timeout : 5s
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2019/05/09 20:19:52 ------------------------------------
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2019/05/09 20:19:52 New Prometheus metric registered: domains_blocked
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2019/05/09 20:19:52 New Prometheus metric registered: dns_queries_today
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2019/05/09 20:19:52 New Prometheus metric registered: ads_blocked_today
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2019/05/09 20:19:52 New Prometheus metric registered: ads_percentag_today
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2019/05/09 20:19:52 New Prometheus metric registered: unique_domains
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2019/05/09 20:19:52 New Prometheus metric registered: queries_forwarded
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2019/05/09 20:19:52 New Prometheus metric registered: queries_cached
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2019/05/09 20:19:52 New Prometheus metric registered: clients_ever_seen
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2019/05/09 20:19:52 New Prometheus metric registered: unique_clients
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2019/05/09 20:19:52 New Prometheus metric registered: dns_queries_all_types
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2019/05/09 20:19:52 New Prometheus metric registered: reply
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2019/05/09 20:19:52 New Prometheus metric registered: top_queries
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2019/05/09 20:19:52 New Prometheus metric registered: top_ads
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2019/05/09 20:19:52 New Prometheus metric registered: top_sources
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2019/05/09 20:19:52 New Prometheus metric registered: forward_destinations
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2019/05/09 20:19:52 New Prometheus metric registered: querytypes
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2019/05/09 20:19:52 New Prometheus metric registered: status
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2019/05/09 20:19:52 Starting HTTP server
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2019/05/09 20:19:54 New tick of statistics: 648 ads blocked / 66796 total DNS querie
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...
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```
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Once the exporter is running, you also have to update your `prometheus.yml` configuration to let it scrape the exporter:
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```yaml
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scrape_configs:
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- job_name: 'pihole'
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static_configs:
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- targets: ['localhost:9617']
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```
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## Available CLI options
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```bash
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# Hostname of the host(s) where PI-Hole is installed
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-pihole_hostname string (optional) (default "127.0.0.1")
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# Password defined on the PI-Hole interface
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-pihole_password string (optional)
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# Timeout to connect and retrieve data from a Pi-Hole instance
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-timeout duration (optional) (default 5s)
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# WEBPASSWORD / api token defined on the PI-Hole interface at `/etc/pihole/setupVars.conf`
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-pihole_api_token string (optional)
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# Port to be used for the exporter
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-port string (optional) (default "9617")
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```
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## Available Prometheus metrics
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| Metric name | Description |
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| pihole_domains_being_blocked | This represent the number of domains being blocked |
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| pihole_dns_queries_today | This represent the number of DNS queries made over the current day |
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| pihole_ads_blocked_today | This represent the number of ads blocked over the current day |
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| pihole_ads_percentage_today | This represent the percentage of ads blocked over the current day |
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| pihole_unique_domains | This represent the number of unique domains seen |
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| pihole_queries_forwarded | This represent the number of queries forwarded |
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| pihole_queries_cached | This represent the number of queries cached |
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| pihole_clients_ever_seen | This represent the number of clients ever seen |
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| pihole_unique_clients | This represent the number of unique clients seen |
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| pihole_dns_queries_all_types | This represent the number of DNS queries made for all types |
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| pihole_reply | This represent the number of replies made for all types |
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| pihole_top_queries | This represent the number of top queries made by PI-Hole by domain |
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| pihole_top_ads | This represent the number of top ads made by PI-Hole by domain |
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| pihole_top_sources | This represent the number of top sources requests made by PI-Hole by source host |
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| pihole_forward_destinations | This represent the number of forward destinations requests made by PI-Hole by destination |
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| pihole_querytypes | This represent the number of queries made by PI-Hole by type |
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| pihole_status | This represent if PI-Hole is enabled |
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## Pihole-Exporter Helm Chart
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[Link](https://github.com/SiM22/pihole-exporter-helm-chart)
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This is a simple Helm Chart to deploy the exporter in a kubernetes cluster.
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