mirror of
https://github.com/ryan4yin/nix-config.git
synced 2026-11-13 12:13:36 +01:00
Ryan Yin
55aa4e3e10
cilium writes /etc/cni/net.d while istio-cni reads k3s's own dir, so on the new workers the chained plugin never found a network config. Add the symlinks the server module already has.
57 lines
1.4 KiB
Nix
57 lines
1.4 KiB
Nix
{
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pkgs,
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masterHost,
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tokenFile,
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nodeLabels ? [ ],
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k3sExtraArgs ? [ ],
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...
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}:
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let
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package = pkgs.k3s;
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in
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{
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environment.systemPackages = [ package ];
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# Kernel modules required by cilium
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boot.kernelModules = [
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"ip6_tables"
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"ip6table_mangle"
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"ip6table_raw"
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"ip6table_filter"
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];
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networking.enableIPv6 = true;
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networking.nat = {
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enable = true;
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enableIPv6 = true;
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};
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services.k3s = {
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enable = true;
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inherit package tokenFile;
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role = "agent";
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serverAddr = "https://${masterHost}:6443";
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# https://docs.k3s.io/cli/agent
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extraFlags =
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let
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flagList = [
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"--data-dir /var/lib/rancher/k3s"
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]
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++ (map (label: "--node-label=${label}") nodeLabels)
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++ k3sExtraArgs;
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in
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pkgs.lib.concatStringsSep " " flagList;
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};
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# Link k3s's CNI directories to the conventional locations, so CNI plugins
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# that write to /etc/cni/net.d or /opt/cni/bin (cilium, istio-cni) share them
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# with k3s. Without this, cilium writes /etc/cni/net.d while istio-cni reads
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# k3s's own dir, and the chained plugin never finds a network config.
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# Mirrors the server module.
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systemd.tmpfiles.rules = [
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"L+ /opt/cni/bin - - - - /var/lib/rancher/k3s/data/cni/"
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"d /var/lib/rancher/k3s/agent/etc/cni/net.d 0751 root root - -"
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"L+ /etc/cni/net.d - - - - /var/lib/rancher/k3s/agent/etc/cni/net.d"
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];
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}
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