68 lines
1.9 KiB
Markdown
68 lines
1.9 KiB
Markdown
# Central dnsmasq setup
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## Overview
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dnsmasq solves two problems for us. It provides:
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- LAN DNS w/ forwarding of internal and external cloud domains to the cluster.
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- PXE for setting up cluster nodes.
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### PXE Bootloading
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A "PXE client" is any machine that is booting using PXE. This is a great way to set up a new cluster node.
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- PXE client broadcasts a request for help across the LAN.
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- Dnsmasq's DHCP service responds with an IP address and TFTP server info.
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- PXE client downloads PXE's iPEXE bootloader files:
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- `ipxe.efi`
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- `undionly.kpxe`
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- `ipxe-arm64.efi`
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(`pxelinux.0`) via TFTP.
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- PXE client reads the bootloader config for the correct web address and fetches the boot files:
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- The kernel, `vmlinuz`.
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- The initial RAM disk, `initrd`.
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- The Talos image,
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## Setup
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- Install a Linux machine on your LAN. Record it's IP address in your `config:cloud.dns.ip`.
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- Ensure it is accessible with ssh.
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- Run `setup/dnsmasq/bin/create-setup-bundle.sh`
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- Run `setup/dnsmasq/bin/transfer-setup-bundle.sh`
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Now ssh into your dnsmasq machine and do the following:
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```bash
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sudo -i
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cd dnsmasq-setup
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./setup.sh
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```
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## Future setup
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To provide a better user experience, we have been creating a debian apt package that also does this while providing a UI.
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Development repo: https://github.com/civil-society-dev/wild-central
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The setup will look something like this:
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```bash
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# Download and install GPG key
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curl -fsSL https://mywildcloud.org/apt/wild-cloud-central.gpg | sudo tee /usr/share/keyrings/wild-cloud-central-archive-keyring.gpg > /dev/null
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# Add repository (modern .sources format)
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sudo tee /etc/apt/sources.list.d/wild-cloud-central.sources << 'EOF'
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Types: deb
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URIs: https://mywildcloud.org/apt
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Suites: stable
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Components: main
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Signed-By: /usr/share/keyrings/wild-cloud-central-archive-keyring.gpg
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EOF
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# Update and install
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sudo apt update
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sudo apt install wild-cloud-central
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```
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browse to `http://localhost:5050`!
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