dnsdist -- Explain inability to include YAML configuration files - Missing equivalent of includeDirectory() ?

[Warex61]

1. Issue Description

I recently migrated to dnsdist 2.0 and I'm testing the new YAML configuration format. However, I cannot reproduce the modular structure I had with the Lua format.

Current Configuration (Lua) - Working

-- /etc/dnsdist/dnsdist.conf
includeDirectory("/etc/dnsdist/dnsdist.d")

File structure:

/etc/dnsdist/
├── dnsdist.conf
└── dnsdist.d/
    ├── 01-binds.conf
    ├── 02-backends.conf
    ├── 03-conf3.conf
    └── 04-conf4.conf

Attempted Configuration (YAML) - Not Working

Is this possible to include YAML configuration file as LUA fles ?

It can be something like :

# /etc/dnsdist/dnsdist.yml
---
includes:
  - "/etc/dnsdist/conf.d/binds.yml"
  - "/etc/dnsdist/conf.d/backends.yml"

2. Question

Is this possible or a missing feature?

In the Lua format, we can easily organize our configuration into modules with includeDirectory().

Current YAML Configuration

This only way I found for YAML configuration is to put all my configuration in a single dnsdist.yml file.

Environment Information

• dnsdist version: 2.0.0
• OS: Debian 12
• Configuration format: YAML

Thank you in advance and for your time !

[rgacogne]

Hi! There is currently no mechanism to include other YAML configuration files from the main one. I agree it would make sense, but I'm not sure how it would work with regards to the configuration validator. I'll have a look at how the recursor is handling that.

[omoerbeek]

The recursor has code to merge multiple yaml files with a well defined way to merge or override things. This code is mostly generated. See https://docs.powerdns.com/recursor/yamlsettings.html#merging-multiple-setting-files for the docs part.

[rgacogne]

This feels like a huge can of worms :'(