1 files changed, 74 insertions, 0 deletions
diff --git a/nixpkgs/nixos/tests/k3s/single-node.nix b/nixpkgs/nixos/tests/k3s/single-node.nix
new file mode 100644
index 000000000000..27e1e455e641
--- /dev/null
+++ b/nixpkgs/nixos/tests/k3s/single-node.nix
@@ -0,0 +1,74 @@
+import ../make-test-python.nix ({ pkgs, ... }:
+  let
+    imageEnv = pkgs.buildEnv {
+      name = "k3s-pause-image-env";
+      paths = with pkgs; [ tini (hiPrio coreutils) busybox ];
+    };
+    pauseImage = pkgs.dockerTools.streamLayeredImage {
+      name = "test.local/pause";
+      tag = "local";
+      contents = imageEnv;
+      config.Entrypoint = [ "/bin/tini" "--" "/bin/sleep" "inf" ];
+    };
+    testPodYaml = pkgs.writeText "test.yml" ''
+      apiVersion: v1
+      kind: Pod
+      metadata:
+        name: test
+      spec:
+        containers:
+        - name: test
+          image: test.local/pause:local
+          imagePullPolicy: Never
+          command: ["sh", "-c", "sleep inf"]
+    '';
+  in
+  {
+    name = "k3s";
+    meta = with pkgs.lib.maintainers; {
+      maintainers = [ euank ];
+    };
+
+    nodes.machine = { pkgs, ... }: {
+      environment.systemPackages = with pkgs; [ k3s gzip ];
+
+      # k3s uses enough resources the default vm fails.
+      virtualisation.memorySize = 1536;
+      virtualisation.diskSize = 4096;
+
+      services.k3s.enable = true;
+      services.k3s.role = "server";
+      services.k3s.package = pkgs.k3s;
+      # Slightly reduce resource usage
+      services.k3s.extraFlags = "--no-deploy coredns,servicelb,traefik,local-storage,metrics-server --pause-image test.local/pause:local";
+
+      users.users = {
+        noprivs = {
+          isNormalUser = true;
+          description = "Can't access k3s by default";
+          password = "*";
+        };
+      };
+    };
+
+    testScript = ''
+      start_all()
+
+      machine.wait_for_unit("k3s")
+      machine.succeed("k3s kubectl cluster-info")
+      machine.fail("sudo -u noprivs k3s kubectl cluster-info")
+      machine.succeed("k3s check-config")
+
+      machine.succeed(
+          "${pauseImage} | k3s ctr image import -"
+      )
+
+      # Also wait for our service account to show up; it takes a sec
+      machine.wait_until_succeeds("k3s kubectl get serviceaccount default")
+      machine.succeed("k3s kubectl apply -f ${testPodYaml}")
+      machine.succeed("k3s kubectl wait --for 'condition=Ready' pod/test")
+      machine.succeed("k3s kubectl delete -f ${testPodYaml}")
+
+      machine.shutdown()
+    '';
+  })