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https://github.com/eko/pihole-exporter

A Prometheus exporter for PI-Hole's Raspberry PI ad blocker
https://github.com/eko/pihole-exporter

docker grafana grafana-dashboard hacktoberfest pihole prometheus prometheus-exporter raspberry-pi

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A Prometheus exporter for PI-Hole's Raspberry PI ad blocker

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README 

        
# Pi-hole Prometheus Exporter



![Build/Push (master)](https://github.com/eko/pihole-exporter/workflows/Build/Push%20(master)/badge.svg)

[![GoDoc](https://godoc.org/github.com/eko/pihole-exporter?status.png)](https://godoc.org/github.com/eko/pihole-exporter)

[![GoReportCard](https://goreportcard.com/badge/github.com/eko/pihole-exporter)](https://goreportcard.com/report/github.com/eko/pihole-exporter)



This is a Prometheus exporter for [Pi-hole](https://pi-hole.net/)'s Raspberry PI ad blocker.



![Grafana dashboard](https://raw.githubusercontent.com/eko/pihole-exporter/master/dashboard.jpg)



Available Grafana Dasboards:



* Prometheus: [Grafana Labs](https://grafana.com/grafana/dashboards/10176-pi-hole-exporter/) / [JSON/Github](https://raw.githubusercontent.com/eko/pihole-exporter/master/grafana/dashboard.json) --> [Preview](https://raw.githubusercontent.com/eko/pihole-exporter/master/dashboard.jpg)

* InfluxDB 2 (Flux): [Grafana Labs](https://grafana.com/grafana/dashboards/17094-pi-hole-exporter-influxdb-2/) / [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)



## Prerequisites



* [Go](https://golang.org/doc/)



## Installation



### Download binary



You can download the latest version of the binary built for your architecture here:



* Architecture **i386** [

    [Linux](https://github.com/eko/pihole-exporter/releases/latest/download/pihole_exporter-linux-386) /

    [Windows](https://github.com/eko/pihole-exporter/releases/latest/download/pihole_exporter-windows-386.exe)

]

* Architecture **amd64** [

    [Darwin](https://github.com/eko/pihole-exporter/releases/latest/download/pihole_exporter-darwin-amd64) /

    [Linux](https://github.com/eko/pihole-exporter/releases/latest/download/pihole_exporter-linux-amd64) /

    [Windows](https://github.com/eko/pihole-exporter/releases/latest/download/pihole_exporter-windows-amd64.exe)

]

* Architecture **arm** [

    [Darwin](https://github.com/eko/pihole-exporter/releases/latest/download/pihole_exporter-darwin-arm64) /

    [Linux](https://github.com/eko/pihole-exporter/releases/latest/download/pihole_exporter-linux-arm)

]



### Using Docker



The exporter is also available as a [Docker image](https://hub.docker.com/r/ekofr/pihole-exporter).

You can run it using the following example and pass configuration environment variables:



```

$ docker run \

  -e 'PIHOLE_HOSTNAME=192.168.1.2' \

  -e 'PIHOLE_PASSWORD=mypassword' \

  -e 'PORT=9617' \

  -p 9617:9617 \

  ekofr/pihole-exporter:latest

```



Or use PiHole's `WEBPASSWORD` as an API token instead of the password



```bash

$ API_TOKEN=$(awk -F= -v key="WEBPASSWORD" '$1==key {print $2}' /etc/pihole/setupVars.conf)

$ docker run \

  -e 'PIHOLE_HOSTNAME=192.168.1.2' \

  -e "PIHOLE_API_TOKEN=$API_TOKEN" \

  -e 'PORT=9617' \

  -p 9617:9617 \

  ekofr/pihole-exporter:latest

```



If you are running pi-hole behind https, you must both set the `PIHOLE_PROTOCOL` environment variable

as well as include your ssl certificates to the docker image as it does not have any baked in:



```

$ docker run \

  -e 'PIHOLE_PROTOCOL=https' \

  -e 'PIHOLE_HOSTNAME=192.168.1.2' \

  -e 'PIHOLE_PASSWORD=mypassword' \

  -e 'PORT=9617' \

  -v '/etc/ssl/certs:/etc/ssl/certs:ro' \

  -p 9617:9617 \

  ekofr/pihole-exporter:latest

```



A single instance of pihole-exporter can monitor multiple pi-holes instances.

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:



```

$ docker run \

  -e 'PIHOLE_PROTOCOL=http,http,http" \

  -e 'PIHOLE_HOSTNAME=192.168.1.2,192.168.1.3,192.168.1.4"' \

  -e "PIHOLE_API_TOKEN=$API_TOKEN1,$API_TOKEN2,$API_TOKEN3" \

  -e "PIHOLE_PORT=8080,8081,8080" \

  -e 'PORT=9617' \

  -p 9617:9617 \

  ekofr/pihole-exporter:latest

```



If port, protocol and API token/password is the same for all instances, you can specify them only once:



```

$ docker run \

  -e 'PIHOLE_PROTOCOL=http" \

  -e 'PIHOLE_HOSTNAME=192.168.1.2,192.168.1.3,192.168.1.4"' \

  -e "PIHOLE_API_TOKEN=$API_TOKEN" \

  -e "PIHOLE_PORT=8080" \

  -e 'PORT=9617' \

  -p 9617:9617 \

  ekofr/pihole-exporter:latest

```



### From sources



Optionally, you can download and build it from the sources. You have to retrieve the project sources by using one of the following way:

```bash

$ go install github.com/eko/pihole-exporter@latest

# or

$ git clone https://github.com/eko/pihole-exporter.git

```



Install the needed vendors:



```

$ GO111MODULE=on go mod vendor

```



Then, build the binary (here, an example to run on Raspberry PI ARM architecture):

```bash

$ GOOS=linux GOARCH=arm GOARM=7 go build -o pihole_exporter .

```



## Usage



In order to run the exporter, type the following command (arguments are optional):



Using a password



```bash

$ ./pihole_exporter -pihole_hostname 192.168.1.10 -pihole_password azerty

```



Or use PiHole's `WEBPASSWORD` as an API token instead of the password



```bash

$ API_TOKEN=$(awk -F= -v key="WEBPASSWORD" '$1==key {print $2}' /etc/pihole/setupVars.conf)

$ ./pihole_exporter -pihole_hostname 192.168.1.10 -pihole_api_token $API_TOKEN

```



```bash

2019/05/09 20:19:52 ------------------------------------

2019/05/09 20:19:52 -  Pi-hole exporter configuration  -

2019/05/09 20:19:52 ------------------------------------

2019/05/09 20:19:52 PIHoleHostname : 192.168.1.10

2019/05/09 20:19:52 PIHolePassword : azerty

2019/05/09 20:19:52 Port : 9617

2019/05/09 20:19:52 Timeout : 5s

2019/05/09 20:19:52 ------------------------------------

2019/05/09 20:19:52 New Prometheus metric registered: domains_blocked

2019/05/09 20:19:52 New Prometheus metric registered: dns_queries_today

2019/05/09 20:19:52 New Prometheus metric registered: ads_blocked_today

2019/05/09 20:19:52 New Prometheus metric registered: ads_percentag_today

2019/05/09 20:19:52 New Prometheus metric registered: unique_domains

2019/05/09 20:19:52 New Prometheus metric registered: queries_forwarded

2019/05/09 20:19:52 New Prometheus metric registered: queries_cached

2019/05/09 20:19:52 New Prometheus metric registered: clients_ever_seen

2019/05/09 20:19:52 New Prometheus metric registered: unique_clients

2019/05/09 20:19:52 New Prometheus metric registered: dns_queries_all_types

2019/05/09 20:19:52 New Prometheus metric registered: reply

2019/05/09 20:19:52 New Prometheus metric registered: top_queries

2019/05/09 20:19:52 New Prometheus metric registered: top_ads

2019/05/09 20:19:52 New Prometheus metric registered: top_sources

2019/05/09 20:19:52 New Prometheus metric registered: forward_destinations

2019/05/09 20:19:52 New Prometheus metric registered: querytypes

2019/05/09 20:19:52 New Prometheus metric registered: status

2019/05/09 20:19:52 New Prometheus metric registered: queries_last_10min

2019/05/09 20:19:52 New Prometheus metric registered: ads_last_10min

2019/05/09 20:19:52 Starting HTTP server

2019/05/09 20:19:54 New tick of statistics: 648 ads blocked / 66796 total DNS querie

...

```



Once the exporter is running, you also have to update your `prometheus.yml` configuration to let it scrape the exporter:



```yaml

scrape_configs:

  - job_name: 'pihole'

    static_configs:

      - targets: ['localhost:9617']

```



## Available CLI options

```bash

# Hostname of the host(s) where Pi-hole is installed

  -pihole_hostname string (optional) (default "127.0.0.1")



# Password defined on the Pi-hole interface

  -pihole_password string (optional)



# Timeout to connect and retrieve data from a Pi-hole instance

  -timeout duration (optional) (default 5s)



# WEBPASSWORD / api token defined on the Pi-hole interface at `/etc/pihole/setupVars.conf`

  -pihole_api_token string (optional)



# Address to be used for the exporter

  -bind_addr string (optional) (default "0.0.0.0")



# Port to be used for the exporter

  -port string (optional) (default "9617")

```



## Available Prometheus metrics



| Metric name                  | Description                                                                               |

|:----------------------------:|-------------------------------------------------------------------------------------------|

| pihole_domains_being_blocked | This represent the number of domains being blocked                                        |

| pihole_dns_queries_today     | This represent the number of DNS queries made over the current day                        |

| pihole_ads_blocked_today     | This represent the number of ads blocked over the current day                             |

| pihole_ads_percentage_today  | This represent the percentage of ads blocked over the current day                         |

| pihole_unique_domains        | This represent the number of unique domains seen                                          |

| pihole_queries_forwarded     | This represent the number of queries forwarded                                            |

| pihole_queries_cached        | This represent the number of queries cached                                               |

| pihole_clients_ever_seen     | This represent the number of clients ever seen                                            |

| pihole_unique_clients        | This represent the number of unique clients seen                                          |

| pihole_dns_queries_all_types | This represent the number of DNS queries made for all types                               |

| pihole_reply                 | This represent the number of replies made for all types                                   |

| pihole_top_queries           | This represent the number of top queries made by Pi-hole by domain                        |

| pihole_top_ads               | This represent the number of top ads made by Pi-hole by domain                            |

| pihole_top_sources           | This represent the number of top sources requests made by Pi-hole by source host          |

| pihole_forward_destinations  | This represent the number of forward destinations requests made by Pi-hole by destination |

| pihole_querytypes            | This represent the number of queries made by Pi-hole by type                              |

| pihole_status                | This represent if Pi-hole is enabled                                                      |

| queries_last_10min           | This represent the number of queries in the last full slot of 10 minutes                  |

| ads_last_10min               | This represent the number of ads in the last full slot of 10 minutes                      |



## Pihole-Exporter Helm Chart



[Link](https://github.com/SiM22/pihole-exporter-helm-chart)



This is a simple Helm Chart to deploy the exporter in a kubernetes cluster.