First VM box

LICENSE

@@ -1,6 +1,6 @@
 MIT License
 
-Copyright (c) <year> <copyright holders>
+Copyright (c) 2022 FollieHiyuki
 
 Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
 

Makefile

@@ -0,0 +1,15 @@
+all: alpine-qemu.pkr.hcl
+
+alpine-qemu.pkr.hcl:
+	@echo "==> Validating $@ ..."
+	@packer validate $@
+	@echo "==> Building VM box for $@ ..."
+	@packer build -on-error=abort $@
+
+format:
+	@packer fmt -diff -recursive .
+
+clean:
+	@find ./artifacts/* -prune -exec rm -rfv {} \;
+
+.PHONY: all alpine-qemu.pkr.hcl format clean

README.md

@@ -1,3 +1,11 @@
 # packer-templates
 
-Messing around with packer and vagrant
+This repository holds Packer's VM templates I use. Most (if not all) of them run [AlpineLinux](https://alpinelinux.org).
+
+## VM boxes
+
+- **[alpine-qemu.pkr.hcl](./alpine-qemu.pkr.hcl)**: libvirt-compatible VM on local machine running Alpine edge.
+
+## License
+
+MIT

alpine-qemu.pkr.hcl

@@ -0,0 +1,99 @@
+variable "headless" {
+  type    = bool
+  default = true
+}
+
+variable "iso_url" {
+  type    = string
+  default = "https://dl-cdn.alpinelinux.org/alpine/v3.16/releases/x86_64/alpine-standard-3.16.2-x86_64.iso"
+}
+
+variable "iso_checksum" {
+  type    = string
+  default = "sha512:b4dcc47b28390c20348d14643863ce41fb9ad55755a1ec00af0117c3dd09c9d03c2c722b005534abece67baa2a017bd78a65c18d2dccd525491d679fe13cd615"
+}
+
+variable "disk_size" {
+  type    = string
+  default = "20G"
+}
+
+variable "ram" {
+  type    = string
+  default = "2048M"
+}
+
+variable "cpus" {
+  type    = string
+  default = "2"
+}
+
+variable "rootfstype" {
+  type    = string
+  default = "btrfs"
+}
+
+variable "ssh_username" {
+  type    = string
+  default = "kawaii"
+}
+
+variable "ssh_password" {
+  type    = string
+  default = "kawaii"
+}
+
+source "qemu" "alpine-qemu" {
+  accelerator = "kvm"
+  boot_command = [
+    "root<enter>",
+    "ifconfig eth0 up && udhcpc -i eth0<enter><wait10s>",
+    "wget -qO answers http://{{.HTTPIP}}:{{.HTTPPort}}/answers/alpine-qemu<enter><wait5s>",
+    "echo 'USEROPTS=\"-a -u ${var.ssh_username}\"' >> answers<enter>",
+    "ERASE_DISKS=/dev/vda ROOTFS=${var.rootfstype} setup-alpine -ef answers<enter><wait10m>",
+    "reboot<enter><wait30s>",
+    "root<enter>",
+    "echo '${var.ssh_username}:${var.ssh_password}' | chpasswd<enter>",
+    "sed -i 's/^permit persist/permit nopass/' /etc/doas.d/doas.conf<enter>",
+    "apk add dropbear-scp<enter>",
+    "passwd -l root<enter>",
+    "reboot<enter>"
+  ]
+  boot_wait        = "30s"
+  disk_cache       = "none"
+  disk_compression = true
+  disk_discard     = "unmap"
+  disk_interface   = "virtio"
+  disk_size        = var.disk_size
+  format           = "qcow2"
+  headless         = var.headless
+  http_directory   = "."
+  iso_checksum     = var.iso_checksum
+  iso_url          = var.iso_url
+  net_device       = "virtio-net"
+  output_directory = "artifacts/qemu"
+  qemu_binary      = "/usr/bin/qemu-system-x86_64"
+  qemuargs = [
+    ["-m", "${var.ram}"],
+    ["-display", "none"],
+    ["-smp", "${var.cpus}"]
+  ]
+  shutdown_command = "doas /sbin/poweroff"
+  ssh_password     = var.ssh_password
+  ssh_username     = var.ssh_username
+  ssh_wait_timeout = "30m"
+  vm_name          = "packer-alpine-edge-qemu-x86_64"
+}
+
+build {
+  sources = ["source.qemu.alpine-qemu"]
+
+  provisioner "shell" {
+    execute_command = "doas sh {{.Path}}"
+    inline_shebang  = "/bin/sh -e"
+    inline = [
+      "apk add qemu-guest-agent",
+      "rc-update add qemu-guest-agent"
+    ]
+  }
+}

answers/alpine-qemu

@@ -0,0 +1,33 @@
+# Answer file for alpine-qemu.pkr.hcl template
+
+KEYMAPOPTS="us us"
+
+HOSTNAMEOPTS="alpine-qemu"
+
+DEVDOPTS="mdev"
+
+INTERFACESOPTS="auto lo
+iface lo inet loopback
+
+auto eth0
+iface eth0 inet dhcp
+    hostname alpine-qemu
+"
+
+DNSOPTS=""
+
+TIMEZONEOPTS="UTC"
+
+PROXYOPTS="none"
+
+APKREPOSOPTS="https://download.nus.edu.sg/mirror/alpine/edge/main
+https://download.nus.edu.sg/mirror/alpine/edge/community
+https://download.nus.edu.sg/mirror/alpine/edge/testing
+"
+
+SSHDOPTS="dropbear"
+
+NTPOPTS="busybox"
+
+DISKOPTS="-s 0 -m sys /dev/vda"
+

artifacts/.gitignore

@@ -0,0 +1 @@
+*

update_iso_checksum.sh

@@ -0,0 +1,20 @@
+#!/bin/sh
+
+set -e
+
+if [ $# -ne 1 ]; then
+    echo "Required only 1 argument."
+    exit 1
+fi
+
+filename="$1"
+if [ ! -r "$filename" ]; then
+    echo "File $filename cannot be read."
+    exit 1
+fi
+
+iso_url=$(hcl2json "$filename" | jq -r '.variable.iso_url[].default')
+
+printf "Checking sha512sum of \033[1;34m%s\033[0m ...\n" "$iso_url"
+sha512_sum=$(wget -qO- "${iso_url}".sha512 | awk '{print $1}')
+sed -i -E "s|(default = \"sha512:).*\"|\\1$sha512_sum\"|g" "$filename" && echo "ISO checksum updated."