make it work

vm.xml
ignorar imagenes de disco
2023-04-05 17:25:45 -03:00 · 2023-04-04 16:54:37 -03:00 · 2023-04-04 16:54:36 -03:00
6 changed files with 245 additions and 347 deletions
--- a/.gitignore
+++ b/.gitignore
@ -1,4 +1,7 @@
 artifacts
 node_modules
-index.js
-index.js.map
+*.ext4
+*.qcow2
+.env
+initramfs-virt
+vmlinuz-virt
--- a/index.js
+++ b/index.js
@ -0,0 +1,199 @@
+// @ts-check
+import { nanoid } from "nanoid";
+import { execFile as execFileCallback } from "node:child_process";
+import {
+  constants,
+  copyFile,
+  mkdir,
+  opendir,
+  readdir,
+  rm,
+  symlink,
+  writeFile,
+} from "node:fs/promises";
+import { tmpdir } from "node:os";
+import { basename, join } from "node:path";
+import { promisify } from "node:util";
+import * as dotenv from "dotenv";
+dotenv.config();
+
+const execFile = promisify(execFileCallback);
+
+// TODO: configurar runsc
+// TODO: cache de apk (robar de define-alpine-the-sequel)
+
+const currRootPath = await setupRootfsDir();
+await setupBasicApkEnvironment(currRootPath);
+const packages = ["alpine-base", "fish", "docker", "linux-virt"];
+await execFile("doas", [
+  "apk",
+  "--initdb",
+  "--clean-protected",
+  "--root",
+  currRootPath,
+  "add",
+  ...packages,
+]);
+await chroot(currRootPath, ["rc-update", "add", "networking", "sysinit"]);
+await chroot(currRootPath, ["rc-update", "add", "docker", "boot"]);
+await chroot(currRootPath, ["rc-update", "add", "acpid", "default"]);
+await chroot(currRootPath, ["rc-update", "add", "local", "default"]);
+
+await writeFile(
+  "interfaces",
+  `auto lo
+iface lo inet loopback
+  
+auto eth0
+iface eth0
+    use dhcp`,
+  { mode: 0o600 }
+);
+await execFile("doas", [
+  "mv",
+  "interfaces",
+  join(currRootPath, "/etc/network/interfaces"),
+]);
+await execFile("doas", [
+  "chown",
+  "0:0",
+  join(currRootPath, "/etc/network/interfaces"),
+]);
+
+const woodpeckerSecret = getConfig("WOODPECKER_SECRET");
+const woodpeckerServer = getConfig("WOODPECKER_SERVER");
+
+await writeFile(
+  "woodpecker.start",
+  `#!/bin/sh
+docker pull docker.io/woodpeckerci/woodpecker-agent:latest || exit $?
+exec docker run --detach --rm \
+	--name=woodpecker-agent \
+	-v /var/run/docker.sock:/var/run/docker.sock \
+	-e WOODPECKER_SERVER='${woodpeckerServer}' \
+	-e WOODPECKER_SECRET='${woodpeckerSecret}' \
+	-e WOODPECKER_MAX_PROCS=8 \
+	docker.io/woodpeckerci/woodpecker-agent:latest \
+	agent`,
+  { mode: 0o700 }
+);
+await execFile("doas", [
+  "mv",
+  "woodpecker.start",
+  join(currRootPath, "/etc/local.d/woodpecker.start"),
+]);
+await execFile("doas", [
+  "chown",
+  "0:0",
+  join(currRootPath, "/etc/local.d/woodpecker.start"),
+]);
+
+await chroot(currRootPath, ["rc-update", "add", "localmount", "boot"]);
+await writeFstab(currRootPath);
+
+// make VM disk image
+const ext4Path = "raw.ext4";
+await execFile("qemu-img", ["create", "-f", "raw", ext4Path, "50G"]);
+await execFile("mkfs.ext4", [ext4Path]);
+
+const mntdir = join(tmpdir(), "woodpecker-in-a-vm-" + nanoid());
+await mkdir(mntdir);
+await execFile("doas", ["mount", ext4Path, mntdir]);
+for (const path of await readdir(currRootPath))
+  await execFile("doas", ["cp", "-r", join(currRootPath, path), mntdir]);
+await execFile("doas", ["umount", mntdir]);
+await execFile("doas", [
+  "qemu-img",
+  "convert",
+  "-O",
+  "qcow2",
+  ext4Path,
+  "vm.qcow2",
+]);
+
+await copyFile(
+  join(currRootPath, "boot/vmlinuz-virt"),
+  "./vmlinuz-virt",
+  constants.COPYFILE_FICLONE
+);
+await copyFile(
+  join(currRootPath, "boot/initramfs-virt"),
+  "./initramfs-virt",
+  constants.COPYFILE_FICLONE
+);
+await execFile("doas", [
+  "chown",
+  "1000:1000",
+  "./vmlinuz-virt",
+  "./initramfs-virt",
+  "./vm.qcow2",
+]);
+
+async function setupRootfsDir() {
+  const artifactsPath = "./artifacts";
+  const currRootPath = join(artifactsPath, "rootfs" + nanoid());
+  await mkdir(currRootPath, { recursive: true });
+
+  {
+    const currentPath = join(artifactsPath, "current");
+    try {
+      await rm(currentPath);
+    } catch {}
+    await symlink(basename(currRootPath), currentPath);
+  }
+  return currRootPath;
+}
+
+/**
+ * @param {string} rootfs
+ */
+async function setupBasicApkEnvironment(rootfs) {
+  {
+    const apkKeysDir = join(rootfs, "/etc/apk/keys");
+    const keysSrcDir = "alpine/keys";
+    await mkdir(apkKeysDir, { recursive: true });
+    for await (const { name } of await opendir(keysSrcDir))
+      await copyFile(join(keysSrcDir, name), join(apkKeysDir, name));
+  }
+
+  await writeFile(
+    join(rootfs, "/etc/apk/repositories"),
+    [
+      // "https://dl-cdn.alpinelinux.org/alpine/v3.17/main",
+      // "https://dl-cdn.alpinelinux.org/alpine/v3.17/community",
+      "http://alpinelinux.c3sl.ufpr.br/v3.17/main",
+      "http://alpinelinux.c3sl.ufpr.br/v3.17/community",
+    ].join("\n")
+  );
+}
+
+/**
+ * @param {string} rootfs
+ */
+async function writeFstab(rootfs) {
+  const virtualDiskName = "/dev/vda";
+  await writeFile(
+    "fstab",
+    `${virtualDiskName}	/	ext4	rw,relatime,discard 0 1
+`
+  );
+  await execFile("doas", ["mv", "fstab", join(rootfs, "/etc/fstab")]);
+}
+
+/**
+ * Corre comando en chroot
+ * @param {string} rootfs
+ * @param {string[]} cmd
+ */
+async function chroot(rootfs, cmd) {
+  await execFile("doas", ["chroot", rootfs, ...cmd]);
+}
+
+/**
+ * @param {string} name
+ * @returns {string} la variable conseguida
+ */
+function getConfig(name) {
+  if (name in process.env) return process.env[name] || "";
+  else throw new Error(`Falta la variable ${name}`);
+}
--- a/index.ts
+++ b/index.ts
@ -1,96 +0,0 @@
-import { nanoid } from "nanoid";
-import { execFile as execFileCallback } from "node:child_process";
-import {
-  copyFile,
-  mkdir,
-  opendir,
-  readdir,
-  rm,
-  symlink,
-  writeFile,
-} from "node:fs/promises";
-import { tmpdir } from "node:os";
-import { basename, join } from "node:path";
-import { promisify } from "node:util";
-
-const execFile = promisify(execFileCallback);
-
-// TODO: configurar runsc
-// TODO: cache de apk (robar de define-alpine-the-sequel)
-
-const currRootPath = await setupRootfsDir();
-await setupBasicApkEnvironment(currRootPath);
-const packages = ["alpine-base", "fish", "docker", "linux-virt"];
-await execFile("doas", [
-  "apk",
-  "--initdb",
-  "--clean-protected",
-  "--root",
-  currRootPath,
-  "add",
-  ...packages,
-]);
-await chroot(currRootPath, ["rc-update", "add", "docker", "default"]);
-
-await chroot(currRootPath, ["rc-update", "add", "localmount", "boot"]);
-await writeFstab(currRootPath);
-
-// make VM disk image
-const ext4Path = "raw.ext4";
-await execFile("qemu-img", ["create", "-f", "raw", ext4Path, "50G"]);
-await execFile("mkfs.ext4", [ext4Path]);
-
-const mntdir = join(tmpdir(), "woodpecker-in-a-vm-" + nanoid());
-await mkdir(mntdir);
-await execFile("doas", ["mount", ext4Path, mntdir]);
-for (const path of await readdir(currRootPath))
-  await execFile("doas", ["cp", "-r", join(currRootPath, path), mntdir]);
-await execFile("doas", ["umount", mntdir]);
-await execFile("qemu-img", ["convert", "-O", "qcow2", ext4Path, "vm.qcow2"]);
-
-async function setupRootfsDir() {
-  const artifactsPath = "./artifacts";
-  const currRootPath = join(artifactsPath, "rootfs" + nanoid());
-  await mkdir(currRootPath, { recursive: true });
-
-  {
-    const currentPath = join(artifactsPath, "current");
-    try {
-      await rm(currentPath);
-    } catch {}
-    await symlink(basename(currRootPath), currentPath);
-  }
-  return currRootPath;
-}
-
-async function setupBasicApkEnvironment(rootfs: string) {
-  {
-    const apkKeysDir = join(rootfs, "/etc/apk/keys");
-    const keysSrcDir = "alpine/keys";
-    await mkdir(apkKeysDir, { recursive: true });
-    for await (const { name } of await opendir(keysSrcDir))
-      await copyFile(join(keysSrcDir, name), join(apkKeysDir, name));
-  }
-
-  await writeFile(
-    join(rootfs, "/etc/apk/repositories"),
-    [
-      "https://dl-cdn.alpinelinux.org/alpine/v3.17/main",
-      "https://dl-cdn.alpinelinux.org/alpine/v3.17/community",
-    ].join("\n")
-  );
-}
-
-async function writeFstab(rootfs: string) {
-  const virtualDiskName = "/dev/vda";
-  await writeFile(
-    "fstab",
-    `${virtualDiskName}	/	ext4	rw,relatime,discard 0 1
-`
-  );
-  await execFile("doas", ["mv", "fstab", join(rootfs, "/etc/fstab")]);
-}
-
-async function chroot(rootfs: string, cmd: string[]) {
-  await execFile("doas", ["chroot", rootfs, ...cmd]);
-}
--- a/package.json
+++ b/package.json
@ -1,14 +1,13 @@
 {
  "type": "module",
  "scripts": {
-    "run": "esbuild --log-level=warning --target=node18 --platform=node --sourcemap --outdir=. --format=esm --bundle index.ts && node --enable-source-maps index.js"
+    "run": "node index.js"
  },
  "devDependencies": {
-    "@types/node": "^18.15.5",
-    "esbuild": "^0.17.12",
-    "typescript": "^5.0.2"
+    "@types/node": "^18.15.5"
  },
  "dependencies": {
+    "dotenv": "^16.0.3",
    "nanoid": "^4.0.1"
  }
 }
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@ -1,261 +1,31 @@
-lockfileVersion: 5.4
-
-specifiers:
-  '@types/node': ^18.15.5
-  esbuild: ^0.17.12
-  nanoid: ^4.0.1
-  typescript: ^5.0.2
+lockfileVersion: '6.0'

 dependencies:
-  nanoid: 4.0.1
+  dotenv:
+    specifier: ^16.0.3
+    version: 16.0.3
+  nanoid:
+    specifier: ^4.0.1
+    version: 4.0.1

 devDependencies:
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-  esbuild: 0.17.12
-  typescript: 5.0.2
+  '@types/node':
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+    version: 18.15.5

 packages:

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-      '@esbuild/freebsd-arm64': 0.17.12
-      '@esbuild/freebsd-x64': 0.17.12
-      '@esbuild/linux-arm': 0.17.12
-      '@esbuild/linux-arm64': 0.17.12
-      '@esbuild/linux-ia32': 0.17.12
-      '@esbuild/linux-loong64': 0.17.12
-      '@esbuild/linux-mips64el': 0.17.12
-      '@esbuild/linux-ppc64': 0.17.12
-      '@esbuild/linux-riscv64': 0.17.12
-      '@esbuild/linux-s390x': 0.17.12
-      '@esbuild/linux-x64': 0.17.12
-      '@esbuild/netbsd-x64': 0.17.12
-      '@esbuild/openbsd-x64': 0.17.12
-      '@esbuild/sunos-x64': 0.17.12
-      '@esbuild/win32-arm64': 0.17.12
-      '@esbuild/win32-ia32': 0.17.12
-      '@esbuild/win32-x64': 0.17.12
-    dev: true
+    dev: false

-  /nanoid/4.0.1:
+  /nanoid@4.0.1:
    resolution: {integrity: sha512-udKGtCCUafD3nQtJg9wBhRP3KMbPglUsgV5JVsXhvyBs/oefqb4sqMEhKBBgqZncYowu58p1prsZQBYvAj/Gww==}
    engines: {node: ^14 || ^16 || >=18}
    hasBin: true
    dev: false
-
-  /typescript/5.0.2:
-    resolution: {integrity: sha512-wVORMBGO/FAs/++blGNeAVdbNKtIh1rbBL2EyQ1+J9lClJ93KiiKe8PmFIVdXhHcyv44SL9oglmfeSsndo0jRw==}
-    engines: {node: '>=12.20'}
-    hasBin: true
-    dev: true
--- a/readme.md
+++ b/readme.md
@ -4,3 +4,26 @@
 1. lo configuré para que borre en el disco real si se borra algo dentro de la vm 
 1. como woodpecker-agent no tiene state, puedo regenerar la vm con el script las veces que quiera 
 1. no tengo que exponer mi docker real al agent porque está en una vm con el suyo
+
+
+## compilar imágen
+
+```sh
+node index.js
+```
+
+copiar `initramfs-virt vmlinuz-virt vm.qcow2` al servidor a `/var/lib/libvirt/images`
+
+## definir vm
+
+```sh
+virsh shutdown woodpecker-in-a-vm
+virsh undefine woodpecker-in-a-vm
+virt-install --name woodpecker-in-a-vm \
+  --osinfo alpinelinux3.16 \
+  --memory 4096 --vcpus 4 \
+  --import \
+  --disk path=/var/lib/libvirt/images/vm.qcow2,format=qcow2 \
+  --boot kernel=/var/lib/libvirt/images/vmlinuz-virt,initrd=/var/lib/libvirt/images/initramfs-virt,kernel_args="console=/dev/ttyS0 quiet root=/dev/vda rw modules=ext4" \
+  --noautoconsole
+```
Author	SHA1	Message	Date
Nulo	eb0a9d937d	make it work	2023-04-05 17:25:45 -03:00
Nulo	c6cd179efd	vm.xml	2023-04-04 16:54:37 -03:00
Nulo	5c5be0420f	ignorar imagenes de disco	2023-04-04 16:54:36 -03:00