n8n Pi-hole API client

This is an N8n community node. It allows you to use the Pi-hole API [1],[2], in your workflow.

Most of the resources provided by the Pi-hole API are read only, for example the ad blocking metrics or the system status. To use these endpoints you don't need to create a credential.

However, if you plan to use the endpoints that can change the Pi-hole system status, for example disabling/enable the ad blocking, you will need to create the credential to access the API.

Please see bellow which operations are implemented by this node.

Index

Installation
Usage
Credentials
Resources/Operations
Compatibility
Developers

Installation

No special requirement for this node.

Just follow the generic installation guide in the n8n community nodes documentation.

NpmJs url: https://www.npmjs.com/package/n8n-nodes-pihole

NpmJs package name: n8n-nodes-pihole

1. Go to Settings > Community Nodes, and Click Install a community node.
2. Enter n8n-nodes-pihole in Enter npm package name input.
3. Click Install.

After installed you can use the search bar to add the Pi-hole node to your workflow.

Usage

The node configuration is quite simple, just specify the credentials(if required for the operation you want to perform) and the API URL. If you are using the default Pi-hole configurations the API url is http://domain/admin/api.php. For example, http://192.168.1.125/admin/api.php.

Credentials

Only the operations that can change the Pi-hole state require the usage of the API key. For example, if you want to disable or enable the ad blocking from n8n, you must create the credential. If you are only interested in "read" operations you can skip this step.

1. First you must get the Pi-hole API key. Navigate to the Settings-> API/ Web interface, and click on the "Show API token".

2. On the popup click on the "Yes, show API token" button.

3. Finally copy the api key. (Yes, this is a test key)

4. Back to the n8n web page, create a credential of the type "Pi-hole"

4. Paste and save the Pi-hole API key

Resources

This section describes which Pi-hole API operations are available in this node.

Please create an issue or submit PR if you are interested in implementing a new operation.

Status

Get

Returns overall status of the system.

It either returns disabled or enabled. Example:

  {
    "status": "disabled"
  }

Enable - Requires credential

This operation enables the Pi-hole ad blocking.

Disable - Requires credential

This operation disables the Pi-hole ad blocking.

If you want to disable the ad blocking for specific amount of time, you can configure the "seconds" property. When specified it will disable the ad blocking for the specified amount of seconds.

Summary

Returns the summary of the system stats.

The response of this operation contains for example the number of domains blocked or the last gravity list update date. For example:

  {
    "domains_being_blocked": "906,175",
    "dns_queries_today": "29,350",
    "ads_blocked_today": "5,053",
    "ads_percentage_today": "17.2",
    "unique_domains": "3,218",
    "queries_forwarded": "18,978",
    "queries_cached": "5,238",
    "clients_ever_seen": "9",
    "unique_clients": "9",
    "dns_queries_all_types": "29,350",
    "reply_UNKNOWN": "161",
    "reply_NODATA": "6,880",
    "reply_NXDOMAIN": "1,122",
    "reply_CNAME": "8,576",
    "reply_IP": "12,267",
    "reply_DOMAIN": "235",
    "reply_RRNAME": "0",
    "reply_SERVFAIL": "17",
    "reply_REFUSED": "0",
    "reply_NOTIMP": "0",
    "reply_OTHER": "0",
    "reply_DNSSEC": "0",
    "reply_NONE": "0",
    "reply_BLOB": "92",
    "dns_queries_all_replies": "29,350",
    "privacy_level": "0",
    "status": "disabled",
    "gravity_last_updated": {
      "file_exists": true,
      "absolute": 1664313721,
      "relative": {
        "days": 3,
        "hours": 19,
        "minutes": 10
      }
    }
  }

ApiVersion

Returns the version of the API.

{
  "version": 3
}

Version

Returns the version for each Pi-hole component (core, web and ftl). Also indicates if any of the components have a pending update.

{
  "core_update": false,
  "web_update": false,
  "FTL_update": false,
  "core_current": "v5.12.2",
  "web_current": "v5.15.1",
  "FTL_current": "v5.18.1",
  "core_latest": "v5.12.2",
  "web_latest": "v5.15.1",
  "FTL_latest": "v5.18.1",
  "core_branch": "master",
  "web_branch": "master",
  "FTL_branch": "master"
}

Type

Returns the backend used by the API (either PHP or FTL).

  {
    "type": "FTL"
  }

RecentBlocked

Returns the last blocked domain.

TopClient - Requires credential

Returns the clients with the higher number of requests. By default it returns the first 10 clients, you can specify a different value in the additional properties.

[
  {
    "top_sources": {
      "DESKTOP.lan|192.168.1.245": 11057,
      "something.lan|192.168.1.102": 10707,
      "192.168.1.163": 4033,
    }
  }
]

TopClientBlocked - Requires credential

Returns the clients with the higher number of blocked requests. By default it returns the first 10 clients, you can specify a different value in the additional properties.

[
  {
    "top_sources_blocked": {
      "DESKTOP.lan|192.168.1.245": 11057,
      "something.lan|192.168.1.102": 10707,
      "192.168.1.163": 4033,
    }
  }
]

Compatibility

Tested on n8n version 0.193.5 and Pi-hole v5.12.2 | FTL v5.18.1 | Web Interface v5.15.1

Developers

//TODO

Requirements

The n8n development environment tools.

To make the development easier you can use the docker-compose.yml file to launch 2 containers, one with n8n and another with Pi-hole.