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nix-config-ryan4yin/hosts/idols-kana/default.nix
T
Ryan Yin 6180072646 chore: drop the KubeVirt guest bits
The k3s-test workers never ran (they were stuck waiting for volume
binding) and will be re-added as microVMs, so remove their KubeVirt
configs and everything that only existed for KubeVirt guests:

- hosts/k8s/k3s-test-1-worker-{1,2,3} and their outputs
- lib/genKubeVirtGuestModule.nix and lib/genK3sAgentModule.nix (the
  latter was only used by the workers)
- the KubeVirt image upload recipes (upload-vm, upload-idols,
  upload-k3s-test) and the kubevirt image package in the idols outputs
- refresh the docs; keep only accurate historical mentions (e.g. the
  restic backup path must stay as it is)
2026-09-21 17:24:40 +08:00

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{
myvars,
mylib,
...
}:
#############################################################
#
# Kana - a NixOS VM running under libvirt
#
#############################################################
let
hostName = "kana"; # Define your hostname.
inherit (myvars.networking) proxyGateway proxyGateway6 nameservers;
inherit (myvars.networking.hostsAddr.${hostName}) iface ipv4;
ipv4WithMask = "${ipv4}/24";
in
{
imports = [
../idols-ruby/packages.nix
../idols-ruby/oci-containers
];
# supported file systems, so we can mount any removable disks with these filesystems
boot.supportedFilesystems = [
"ext4"
"btrfs"
"xfs"
#"zfs"
"ntfs"
"fat"
"vfat"
"exfat"
];
boot.kernelModules = [ "kvm-amd" ];
boot.extraModprobeConfig = "options kvm_amd nested=1"; # for amd cpu
networking = {
inherit hostName;
# we use networkd instead
networkmanager.enable = false;
useDHCP = false;
};
networking.useNetworkd = true;
systemd.network.enable = true;
systemd.network.networks."10-${iface}" = {
matchConfig.Name = [ iface ];
networkConfig = {
Address = [ ipv4WithMask ];
# DNS = nameservers;
DNS = [ proxyGateway ];
DHCP = "ipv6"; # enable DHCPv6 only, so we can get a GUA.
IPv6AcceptRA = true; # for Stateless IPv6 Autoconfiguraton (SLAAC)
LinkLocalAddressing = "ipv6";
};
routes = [
{
Destination = "0.0.0.0/0";
Gateway = proxyGateway;
}
{
Destination = "::/0";
Gateway = proxyGateway6;
GatewayOnLink = true; # it's a gateway on local link.
}
];
linkConfig.RequiredForOnline = "routable";
};
# systemd-journal - reduce disk usage
# https://www.freedesktop.org/software/systemd/man/latest/journald.conf.html
services.journald.settings.Journal = {
SystemMaxUse = "2G";
RuntimeMaxUse = "256M";
};
# This value determines the NixOS release from which the default
# settings for stateful data, like file locations and database versions
# on your system were taken. It‘s perfectly fine and recommended to leave
# this value at the release version of the first install of this system.
# Before changing this value read the documentation for this option
# (e.g. man configuration.nix or on https://nixos.org/nixos/options.html).
system.stateVersion = "24.11"; # Did you read the comment?
}