enable k3s cluster

add simple kubenix script

cluster/README.md

@@ -0,0 +1,3 @@
+```
+nix --extra-experimental-features nix-command --extra-experimental-features flakes  run .#kubenix
+```

cluster/flake.lock

@@ -0,0 +1,99 @@
+{
+  "nodes": {
+    "flake-compat": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1673956053,
+        "narHash": "sha256-4gtG9iQuiKITOjNQQeQIpoIB6b16fm+504Ch3sNKLd8=",
+        "owner": "edolstra",
+        "repo": "flake-compat",
+        "rev": "35bb57c0c8d8b62bbfd284272c928ceb64ddbde9",
+        "type": "github"
+      },
+      "original": {
+        "owner": "edolstra",
+        "repo": "flake-compat",
+        "type": "github"
+      }
+    },
+    "kubenix": {
+      "inputs": {
+        "flake-compat": "flake-compat",
+        "nixpkgs": "nixpkgs",
+        "systems": "systems",
+        "treefmt": "treefmt"
+      },
+      "locked": {
+        "lastModified": 1700116223,
+        "narHash": "sha256-Pld/UXlBcIDnQMY0JkDzChJkbof/zEcRkaiXtzvArEE=",
+        "owner": "hall",
+        "repo": "kubenix",
+        "rev": "e4d036576436b9983216584a89388af3da995043",
+        "type": "github"
+      },
+      "original": {
+        "owner": "hall",
+        "repo": "kubenix",
+        "type": "github"
+      }
+    },
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1686488075,
+        "narHash": "sha256-2otSBt2hbeD+5yY25NF3RhWx7l5SDt1aeU3cJ/9My4M=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "9401a0c780b49faf6c28adf55764f230301d0dce",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixpkgs-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "kubenix": "kubenix"
+      }
+    },
+    "systems": {
+      "locked": {
+        "lastModified": 1681028828,
+        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
+        "owner": "nix-systems",
+        "repo": "default",
+        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
+        "type": "github"
+      },
+      "original": {
+        "id": "systems",
+        "type": "indirect"
+      }
+    },
+    "treefmt": {
+      "inputs": {
+        "nixpkgs": [
+          "kubenix",
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1688026376,
+        "narHash": "sha256-qJmkr9BWDpqblk4E9/rCsAEl39y2n4Ycw6KRopvpUcY=",
+        "owner": "numtide",
+        "repo": "treefmt-nix",
+        "rev": "df3f32b0cc253dfc7009b7317e8f0e7ccd70b1cf",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "treefmt-nix",
+        "type": "github"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}

cluster/flake.nix

@@ -0,0 +1,22 @@
+{
+  inputs.kubenix.url = "github:hall/kubenix";
+  outputs = { self, kubenix, ... }:
+    let
+      system = "x86_64-linux";
+    in {
+      kubenix = kubenix.packages.${system}.default.override {
+        module = {kubenix, ...}: {
+          imports = [kubenix.modules.k8s];
+          kubernetes = {
+            kubeconfig = "/etc/rancher/k3s/k3s.yaml";
+            version = "1.24";
+          };
+	  kubenix.project = "yeet";
+
+          kubernetes.resources.pods.web1.spec.containers.nginx.image = "nginx";
+          kubernetes.resources.pods.web2.spec.containers.nginx.image = "nginx";
+        };
+      };
+    };
+}
+

configuration.nix

@@ -109,6 +109,7 @@
     dig
     tree
     file
+    k3s
   ];
 
   networking = {
@@ -169,10 +170,11 @@
     };
   };
 
-  virtualisation.libvirtd.enable = true;
-
   hardware.cpu.intel.updateMicrocode =
     lib.mkDefault config.hardware.enableRedistributableFirmware;
 
   age.identityPaths = [ "/root/age_ed25519" ];
+
+  services.k3s.enable = true;
+  services.k3s.role = "server";
 }

flake.nix

@@ -5,17 +5,20 @@
     nixpkgs.url = "github:nixos/nixpkgs/nixos-23.05";
     nixpkgs-unstable.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
     deploy-rs.url = "github:serokell/deploy-rs";
+
     disko = {
       url = "github:nix-community/disko";
       inputs.nixpkgs.follows = "nixpkgs";
     };
+
     agenix = {
       url = "github:ryantm/agenix";
       inputs.nixpkgs.follows = "nixpkgs";
     };
   };
 
-  outputs = { self, nixpkgs, deploy-rs, disko, agenix, nixpkgs-unstable, ... }:
+  outputs =
+    { self, nixpkgs, deploy-rs, disko, agenix, nixpkgs-unstable, ... }:
     let
       system = "x86_64-linux";
       pkgs = nixpkgs.legacyPackages.${system};