pihole-exporter/README.md

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# PI-Hole Prometheus Exporter
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[![TravisBuildStatus](https://api.travis-ci.org/eko/pihole-exporter.svg?branch=master)](https://travis-ci.org/eko/pihole-exporte)
[![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)
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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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![Grafana dashboard](https://raw.githubusercontent.com/eko/pihole-exporter/master/dashboard.jpg)
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## Prerequisites
* [Go](https://golang.org/doc/)
## 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** [
[Darwin](https://github.com/eko/pihole-exporter/releases/latest/download/pihole_exporter-darwin-386) /
[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** [
[Linux](https://github.com/eko/pihole-exporter/releases/latest/download/pihole_exporter-linux-arm)
]
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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
$ go get -u github.com/eko/pihole-exporter
# or
$ git clone https://github.com/eko/pihole-exporter.git
```
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 .
```
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## Usage
In order to run the exporter, type the following command (arguments are optional):
```bash
$ ./pihole_exporter -pihole_hostname 192.168.1.10 -pihole_password azerty
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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 : 9311
2019/05/09 20:19:52 Interval : 10s
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 Starting HTTP server
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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## Available CLI options
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```bash
# Interval of time the exporter will fetch data from PI-Hole
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-interval duration (optional) (default 10s)
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# Hostname of the Raspberry PI 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)
# Port to be used for the exporter
-port string (optional) (default "9311")
```
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## 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 |