ns8-dnsmasq

This module allows to configure a dnsmasq instance, it offers DHCP and DNS services for the node.

Install

Install the module with:

add-module ghcr.io/nethserver/dnsmasq:latest

API Docs

The module provides the following API endpoints:

• get-available-interfaces: Get the available interfaces for the node
• configure-module: Configure the module
• get-configuration: Get the module configuration active
• get-dns-records: Get all the manual DNS records
• set-dns-records: Set the the DNS records
• get-leases: Get the DHCP leases active

get-available-interfaces

Lists the interfaces that can be used by the module to provide DHCP and DNS services.

Example Request

api-cli run module/<module-id>/get-available-interfaces

Example Response

{
    "data": [
        "enp0s3",
        "enp0s8"
    ]
}

configure-module

Configures the module with the given parameters, it will then start the dnsmasq service.

Data Structure

{
    "interface": "enp0s3",
    "dhcp-server": {
        "end": "10.0.0.100",
        "enabled": true,
        "lease": 10,
        "start": "10.0.0.20",
    },
    "dns-server": {
        "enabled": true,
        "primary-server": "1.1.1.1",
        "secondary-server": ""
    }
}

• interface: The interface to use for the DHCP and DNS services, use the get-available-interfaces endpoint to get the available interfaces.
• dhcp-server: The DHCP server configuration
  • enabled: Enable or disable the DHCP server
  • start: The start of the DHCP range
  • end: The end of the DHCP range
  • lease: The lease time in hours
• dns-server: The DNS server configuration
  • enabled: Enable or disable the DNS server
  • primary-server: The primary DNS server to use, can be IPv4 or IPv6
  • secondary-server: The secondary DNS server to use, can be IPv4 or IPv6 or empty

Example Request

api-cli run module/<module-id>/configure-module --data '<json>'

get-configuration

Get the current configuration of the module, the response is the same as the configure-module request to keep consistency.

Example Request

api-cli run module/<module-id>/get-configuration

set-dns-records

Set the DNS records that the module needs to resolve without querying the upstream DNS servers.

Data Structure

{
    "records": [
        {
            "domain": "example.com",
            "address": "145.34.56.2"
        },
        {
            "domain": "www.example.com",
            "address": "234.67.22.111"
        }
    ]
}

• records: The list of DNS records to set
  • domain: The domain to resolve
  • address: The IP address to resolve the domain to, can be an IPv4 or IPv6 address

Example Request

api-cli run module/<module-id>/set-dns-records --data '<json>'

get-dns-record

Get the DNS records saved in the module. Returns the same structure as the set-dns-records request.

Example Request

api-cli run module/<module-id>/get-dns-records

get-leases

Get the active DHCP leases, with the IP address, MAC address, hostname and expiration time.

Example Request

api-cli run module/<module-id>/get-leases

Example Response

{
    "data": [
        {
            "ip": "10.0.1.20",
            "mac": "00:11:22:33:44:55",
            "hostname": "host1",
            "expires": "2021-12-12T12:12:12+00:00"
        }
    ]
}

Uninstall

To uninstall the instance:

remove-module --no-preserve <module_instance>

Testing

Test the module using the test-module.sh script:

./test-module.sh <NODE_ADDR> ghcr.io/nethserver/dnsmasq:latest

The tests are made using Robot Framework