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bc138f407f
* nixos/k3s: simplify config expression * nixos/k3s: add config assertions and trim unneeded bits * nixos/k3s: add a test that k3s works; minor module improvements This is a single-node test. Eventually we should also have a multi-node test to verify the agent bit works, but that one's more involved. * nixos/k3s: add option description * nixos/k3s: add defaults for token/serveraddr Now that the assertion enforces their presence, we dont' need to use the typesystem for it. * nixos/k3s: remove unneeded sudo in test * nixos/k3s: add to test list
79 lines
2.2 KiB
Nix
79 lines
2.2 KiB
Nix
import ./make-test-python.nix ({ pkgs, ... }:
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let
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# A suitable k3s pause image, also used for the test pod
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pauseImage = pkgs.dockerTools.buildImage {
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name = "test.local/pause";
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tag = "local";
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contents = with pkgs; [ tini coreutils busybox ];
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config.Entrypoint = [ "/bin/tini" "--" "/bin/sleep" "inf" ];
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};
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testPodYaml = pkgs.writeText "test.yml" ''
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# Don't use the default service account because there's a race where it may
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# not be created yet; make our own instead.
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apiVersion: v1
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kind: ServiceAccount
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metadata:
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name: test
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---
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apiVersion: v1
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kind: Pod
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metadata:
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name: test
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spec:
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serviceAccountName: test
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containers:
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- name: test
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image: test.local/pause:local
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imagePullPolicy: Never
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command: ["sh", "-c", "sleep inf"]
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'';
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in
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{
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name = "k3s";
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meta = with pkgs.stdenv.lib.maintainers; {
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maintainers = [ euank ];
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};
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nodes = {
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k3s =
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{ pkgs, ... }: {
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environment.systemPackages = [ pkgs.k3s pkgs.gzip ];
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# k3s uses enough resources the default vm fails.
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virtualisation.memorySize = pkgs.lib.mkDefault 1536;
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virtualisation.diskSize = pkgs.lib.mkDefault 4096;
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services.k3s.enable = true;
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services.k3s.role = "server";
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services.k3s.package = pkgs.k3s;
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# Slightly reduce resource usage
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services.k3s.extraFlags = "--no-deploy coredns,servicelb,traefik,local-storage,metrics-server --pause-image test.local/pause:local";
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users.users = {
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noprivs = {
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isNormalUser = true;
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description = "Can't access k3s by default";
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password = "*";
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};
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};
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};
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};
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testScript = ''
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start_all()
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k3s.wait_for_unit("k3s")
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k3s.succeed("k3s kubectl cluster-info")
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k3s.fail("sudo -u noprivs k3s kubectl cluster-info")
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# k3s.succeed("k3s check-config") # fails with the current nixos kernel config, uncomment once this passes
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k3s.succeed(
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"zcat ${pauseImage} | k3s ctr image import -"
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)
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k3s.succeed("k3s kubectl apply -f ${testPodYaml}")
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k3s.succeed("k3s kubectl wait --for 'condition=Ready' pod/test")
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'';
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})
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