feat: add provisioner support with incus and lxc

Introduced Provisioner enum type and refactored VM setup logic to support different provisioners like incus and lxc. Added bootstrap function for incus.

shuttles/setup-cluster.ts

@@ -2,7 +2,7 @@
 
 // Note: TypeScript errors related to Deno imports and namespace can be safely ignored
 // These are only relevant when running the script with the Deno runtime
-import { Command } from "https://deno.land/x/cliffy@v1.0.0-rc.4/command/mod.ts";
+import { Command, EnumType } from "https://deno.land/x/cliffy@v1.0.0-rc.4/command/mod.ts";
 import { delay } from "https://deno.land/std/async/mod.ts";
 import { exists } from "https://deno.land/std/fs/mod.ts";
 
@@ -12,6 +12,8 @@ const alpineConfig = ['--profile', 'cloud-init-alpine'];
 const archImage = "archlinux/current/cloud";
 const archConfig = ['--profile', 'cloud-init-arch'];
 
+const Provisioner = new EnumType(["incus", "lxc"])
+
 const getIp = (i: number) => `10.110.36.${109 + i}`;
 
 const image = archImage;
@@ -165,32 +167,7 @@ async function cleanup(vmNames: string[], shouldRemove = false): Promise<void> {
   log.success("Cleanup completed");
 }
 
-const setupCluster = async (numMasters: number, forceCleanup = false) => {
-  log.info(`Starting setup of k3s cluster with ${numMasters} master nodes`);
-
-  const createdVMs: string[] = [];
-
-  try {
-    // Get hostname and user
-    const {output: hostname} = await executeCommand(
-      ["hostnamectl", "hostname"],
-      "get hostname"
-    );
-
-    const {output: user} = await executeCommand(
-      ["whoami"],
-      "get current user"
-    );
-
-    const sshKeyPubFileName = `/home/${user}/.ssh/nl.fourlights.${hostname}.pub`;
-    const sshKeyPrivateFileName = `/home/${user}/.ssh/nl.fourlights.${hostname}`;
-
-    // Check if SSH keys exist
-    if (!await exists(sshKeyPubFileName) || !await exists(sshKeyPrivateFileName)) {
-      log.error(`Required SSH keys not found: ${sshKeyPubFileName} or ${sshKeyPrivateFileName}`);
-      throw new Error("SSH keys not found");
-    }
-
+const bootstrapIncus = async () => {
     // Step 1: Create Low-Resource Profile (if not exists)
     const {success: profileExists} = await executeCommand(
       ["incus", "profile", "show", "low-resource"],
@@ -220,14 +197,20 @@ const setupCluster = async (numMasters: number, forceCleanup = false) => {
     } else {
       log.skip("Low-resource profile already exists");
     }
+}
 
-    // Read SSH key
-    const sshKey = await Deno.readTextFile(sshKeyPubFileName);
-
-    // Step 3: Launch VMs (if not already running)
-    for (let i = 1; i <= numMasters; i++) {
-      const vmName = `k3s-master${i}`;
+const makeSureVMExists = async (method: "incus" | "lxc", idx: number, vmName: string, sshKey: string) => {
+  switch (method) {
+    case "incus":
+      return makeSureVMExistsIncus(idx, vmName, sshKey);
+    case "lxc":
+      return makeSureVMExistsLxc(idx, vmName, sshKey);
+    default:
+      throw new Error(`Unknown VM method: ${method}`);
+  }
+}
 
+const makeSureVMExistsIncus = async (idx: number, vmName: string, sshKey: string) => {
       const {success: vmExists, output: vmOutput} = await executeCommand(
         ["incus", "list", vmName, "--format", "csv"],
         `check if VM ${vmName} exists`,
@@ -242,7 +225,7 @@ const setupCluster = async (numMasters: number, forceCleanup = false) => {
         );
 
         await executeCommand(
-          ["incus", "config", 'device', 'add', vmName, 'eth0', 'nic', 'nictype=bridged', 'parent=incusbr0', `ipv4.address=${getIp(i)}`],
+          ["incus", "config", 'device', 'add', vmName, 'eth0', 'nic', 'nictype=bridged', 'parent=incusbr0', `ipv4.address=${getIp(idx)}`],
           `configure network for VM ${vmName}`
         );
 
@@ -251,9 +234,10 @@ const setupCluster = async (numMasters: number, forceCleanup = false) => {
           `start VM ${vmName}`
         );
 
-        createdVMs.push(vmName);
         log.success(`VM ${vmName} started`);
-      } else {
+        return true
+      }
+
       // Check if VM is running, if not, start it
       const isRunning = await isVmRunning(vmName);
       if (!isRunning) {
@@ -264,7 +248,52 @@ const setupCluster = async (numMasters: number, forceCleanup = false) => {
         );
       }
       log.skip(`VM ${vmName} already exists`);
+      return false
+}
+
+const makeSureVMExistsLxc = async (idx: number, vmName: string, sshKey: string) => {
+  throw new Error("Not implemented yet")
+  return false
+}
+
+const setupCluster = async (provisioner: Provisioner, numMasters: number, forceCleanup = false) => {
+  log.info(`Starting setup of k3s cluster with ${numMasters} master nodes`);
+
+  const createdVMs: string[] = [];
+
+  try {
+    // Get hostname and user
+    const {output: hostname} = await executeCommand(
+      ["hostnamectl", "hostname"],
+      "get hostname"
+    );
+
+    const {output: user} = await executeCommand(
+      ["whoami"],
+      "get current user"
+    );
+
+    const sshKeyPubFileName = `/home/${user}/.ssh/nl.fourlights.${hostname}.pub`;
+    const sshKeyPrivateFileName = `/home/${user}/.ssh/nl.fourlights.${hostname}`;
+
+    // Check if SSH keys exist
+    if (!await exists(sshKeyPubFileName) || !await exists(sshKeyPrivateFileName)) {
+      log.error(`Required SSH keys not found: ${sshKeyPubFileName} or ${sshKeyPrivateFileName}`);
+      throw new Error("SSH keys not found");
     }
+
+    // Bootstrap our provisioner
+    if (method === "incus") await bootstrapIncus();
+
+    // Read SSH key
+    const sshKey = await Deno.readTextFile(sshKeyPubFileName);
+
+    // Step 3: Launch VMs (if not already running)
+    for (let i = 1; i <= numMasters; i++) {
+      const vmName = `k3s-master${i}`;
+
+      const created = await makeSureVMExists(method, i, vmName, sshKey);
+      if (created) createdVMs.push(vmName);
     }
 
     // Step 4: Install k3sup (if not installed)
@@ -372,8 +401,10 @@ const setupCluster = async (numMasters: number, forceCleanup = false) => {
 await new Command()
   .name("setup-k3s-cluster")
   .version("0.1.0")
+  .type("provisioner", Provisioner)
   .description("Automate the setup of an HA k3s cluster using incus and k3sup")
+  .option("-p, --provisioner <provisioner:provisioner>", "Provisioner of VMs", {default: "incus"})
   .option("-m, --masters <numMasters:number>", "Number of master nodes", {default: 3})
   .option("-c, --cleanup", "Force cleanup of VMs if setup fails", {default: false})
-  .action(({masters, cleanup}) => setupCluster(masters, cleanup))
+  .action(({provisioner, masters, cleanup}) => setupCluster(provisioner, masters, cleanup))
   .parse(Deno.args);