scripts to generate VM image

images/scripts/guestinit.sh

+#!/bin/sh
+cd /tmp
+tar xf /dev/sdb
+cd guest
+./run.sh

images/scripts/network.sh

+#!/bin/sh
+
+# Disable udev persistent net rules
+rm /etc/udev/rules.d/70-persistent-net.rules
+mkdir /etc/udev/rules.d/70-persistent-net.rules
+rm /lib/udev/rules.d/75-persistent-net-generator.rules
+rm -rf /dev/.udev/ /var/lib/dhcp3/*
+echo "pre-up sleep 2" >> /etc/network/interfaces
+
+# Disable DNS reverse lookup
+echo "UseDNS no" >> /etc/ssh/sshd_config

images/scripts/packages.sh

+DEV_PACKAGES="
+build-essential
+curl
+emacs24-nox
+htop
+nmon
+slurm
+tcpdump
+unzip
+"
+
+ESSENTIAL_PACKAGES="
+ntp
+nfs-common
+iperf
+netcat
+"
+
+if [[ $INSTALL_DEV_PACKAGES  =~ true || $INSTALL_DEV_PACKAGES =~ 1 ||
+        $INSTALL_DEV_PACKAGES =~ yes ]]; then
+  apt-get -y install $DEV_PACKAGES
+fi
+
+apt-get -y install $ESSENTIAL_PACKAGES

images/scripts/preseed.cfg

+choose-mirror-bin mirror/http/proxy string
+d-i debian-installer/framebuffer boolean false
+d-i debconf/frontend select noninteractive
+d-i base-installer/kernel/override-image string linux-server
+d-i clock-setup/utc boolean true
+d-i clock-setup/utc-auto boolean true
+d-i finish-install/reboot_in_progress note
+d-i grub-installer/only_debian boolean true
+d-i grub-installer/with_other_os boolean true
+d-i partman-auto/method string regular
+d-i partman/choose_partition select finish
+d-i partman/confirm boolean true
+d-i partman/confirm_nooverwrite boolean true
+d-i partman/confirm_write_new_label boolean true
+d-i pkgsel/include string openssh-server
+d-i pkgsel/install-language-support boolean false
+d-i pkgsel/update-policy select none
+d-i pkgsel/upgrade select full-upgrade
+d-i time/zone string UTC
+d-i user-setup/allow-password-weak boolean true
+d-i user-setup/encrypt-home boolean false
+tasksel tasksel/first multiselect standard, ubuntu-server

images/scripts/sshd.sh

+#!/bin/bash -eux
+
+echo "UseDNS no" >> /etc/ssh/sshd_config

images/scripts/update.sh

+#!/bin/bash -eux
+
+# Disable the release upgrader
+echo "==> Disabling the release upgrader"
+sed -i.bak 's/^Prompt=.*$/Prompt=never/' /etc/update-manager/release-upgrades
+
+echo "==> Checking version of Ubuntu"
+. /etc/lsb-release
+
+if [[ $DISTRIB_RELEASE == 16.04 || $DISTRIB_RELEASE == 18.04 ]]; then
+  echo "==> Disabling periodic apt upgrades"
+  echo 'APT::Periodic::Enable "0";' >> /etc/apt/apt.conf.d/10periodic
+fi
+
+echo "==> Updating list of repositories"
+# apt-get update does not actually perform updates, it just downloads and indexes the list of packages
+apt-get -y update
+
+if [[ $UPDATE  =~ true || $UPDATE =~ 1 || $UPDATE =~ yes ]]; then
+    echo "==> Performing dist-upgrade (all packages and kernel)"
+    apt-get -y dist-upgrade --force-yes
+    reboot
+    sleep 60
+fi

images/scripts/vagrant.sh

+#!/bin/bash
+
+date > /etc/vagrant_box_build_time
+
+SSH_USER=${SSH_USERNAME:-vagrant}
+SSH_PASS=${SSH_PASSWORD:-vagrant}
+SSH_USER_HOME=${SSH_USER_HOME:-/home/${SSH_USER}}
+VAGRANT_INSECURE_KEY="ssh-rsa AAAAB3NzaC1yc2EAAAABIwAAAQEA6NF8iallvQVp22WDkTkyrtvp9eWW6A8YVr+kz4TjGYe7gHzIw+niNltGEFHzD8+v1I2YJ6oXevct1YeS0o9HZyN1Q9qgCgzUFtdOKLv6IedplqoPkcmF0aYet2PkEDo3MlTBckFXPITAMzF8dJSIFo9D8HfdOV0IAdx4O7PtixWKn5y2hMNG0zQPyUecp4pzC6kivAIhyfHilFR61RGL+GPXQ2MWZWFYbAGjyiYJnAmCP3NOTd0jMZEnDkbUvxhMmBYSdETk1rRgm+R4LOzFUGaHqHDLKLX+FIPKcF96hrucXzcWyLbIbEgE98OHlnVYCzRdK8jlqm8tehUc9c9WhQ== vagrant insecure public key"
+
+# Packer passes boolean user variables through as '1', but this might change in
+# the future, so also check for 'true'.
+if [ "$INSTALL_VAGRANT_KEY" = "true" ] || [ "$INSTALL_VAGRANT_KEY" = "1" ]; then
+    # Create Vagrant user (if not already present)
+    if ! id -u $SSH_USER >/dev/null 2>&1; then
+        echo "==> Creating $SSH_USER user"
+        /usr/sbin/groupadd $SSH_USER
+        /usr/sbin/useradd $SSH_USER -g $SSH_USER -G sudo -d $SSH_USER_HOME --create-home
+        echo "${SSH_USER}:${SSH_PASS}" | chpasswd
+    fi
+
+    # Set up sudo
+    echo "==> Giving ${SSH_USER} sudo powers"
+    echo "${SSH_USER}        ALL=(ALL)       NOPASSWD: ALL" >> /etc/sudoers.d/vagrant
+    chmod 440 /etc/sudoers.d/vagrant
+
+    # Fix stdin not being a tty
+    if grep -q -E "^mesg n$" /root/.profile && sed -i "s/^mesg n$/tty -s \\&\\& mesg n/g" /root/.profile; then
+      echo "==> Fixed stdin not being a tty."
+    fi
+
+    echo "==> Installing vagrant key"
+    mkdir $SSH_USER_HOME/.ssh
+    chmod 700 $SSH_USER_HOME/.ssh
+    cd $SSH_USER_HOME/.ssh
+
+    # https://raw.githubusercontent.com/mitchellh/vagrant/master/keys/vagrant.pub
+    echo "${VAGRANT_INSECURE_KEY}" > $SSH_USER_HOME/.ssh/authorized_keys
+    chmod 600 $SSH_USER_HOME/.ssh/authorized_keys
+    chown -R $SSH_USER:$SSH_USER $SSH_USER_HOME/.ssh
+fi

images/ubuntu1804.json

+{
+  "_comment": "Build with `packer build ubuntu.json`",
+  "builders": [
+    {
+      "boot_command": [
+        "{{ user `boot_command_prefix` }}",
+        "/install/vmlinuz noapic ",
+        "file=/floppy/{{ user `preseed` }} ",
+        "debian-installer={{ user `locale` }} auto locale={{ user `locale` }} kbd-chooser/method=us ",
+        "hostname={{ user `hostname` }} ",
+        "fb=false debconf/frontend=noninteractive ",
+        "keyboard-configuration/modelcode=SKIP ",
+        "keyboard-configuration/layout=USA ",
+        "keyboard-configuration/variant=USA console-setup/ask_detect=false ",
+        "passwd/user-fullname={{ user `ssh_fullname` }} ",
+        "passwd/user-password={{ user `ssh_password` }} ",
+        "passwd/user-password-again={{ user `ssh_password` }} ",
+        "passwd/username={{ user `ssh_username` }} ",
+        "initrd=/install/initrd.gz -- <enter>"
+      ],
+      "disk_size": "{{ user `disk_size` }}",
+      "floppy_files": [
+        "scripts/{{ user `preseed` }}"
+      ],
+      "headless": "{{ user `headless` }}",
+      "http_directory": "http",
+      "iso_checksum": "{{ user `iso_checksum_type` }}:{{ user `iso_checksum` }}",
+      "iso_urls": [
+        "{{ user `iso_url` }}"
+      ],
+      "output_directory": "output-{{ user `vm_name` }}",
+      "qemuargs": [
+        [
+          "-m",
+          "{{ user `memory` }}"
+        ],
+        [
+          "-display",
+          "none"
+        ],
+        [
+          "-machine",
+          "accel=kvm"
+        ],
+        [
+          "-cpu",
+          "host"
+        ],
+        [
+          "-smp",
+          "cpus={{ user `cpus`}}"
+        ]
+      ],
+      "shutdown_command": "echo '{{ user `ssh_password` }}'|sudo -S shutdown -P now",
+      "ssh_password": "{{ user `ssh_password` }}",
+      "ssh_timeout": "10000s",
+      "ssh_username": "{{ user `ssh_username` }}",
+      "type": "qemu",
+      "vm_name": "{{ user `vm_name` }}"
+    }
+  ],
+  "provisioners": [
+    {
+      "environment_vars": [
+        "UPDATE={{user `update`}}",
+        "INSTALL_DEV_PACKAGES={{user `install_dev_packages`}}",
+        "INSTALL_VAGRANT_KEY={{user `install_vagrant_key`}}",
+        "SSH_USERNAME={{user `ssh_username`}}",
+        "SSH_PASSWORD={{user `ssh_password`}}",
+        "http_proxy={{user `http_proxy`}}",
+        "https_proxy={{user `https_proxy`}}",
+        "ftp_proxy={{user `ftp_proxy`}}",
+        "rsync_proxy={{user `rsync_proxy`}}",
+        "no_proxy={{user `no_proxy`}}"
+      ],
+      "execute_command": "echo '{{ user `ssh_password` }}' | {{.Vars}} sudo -E -S bash '{{.Path}}'",
+      "scripts": [
+        "scripts/vagrant.sh",
+        "scripts/sshd.sh",
+        "scripts/update.sh",
+        "scripts/packages.sh",
+        "scripts/cleanup.sh"
+      ],
+      "type": "shell"
+    },
+    {
+      "type": "file",
+      "source": "scripts/guestinit.sh",
+      "destination": "/home/ubuntu/guestinit.sh",
+      "direction": "upload"
+    }
+  ],
+  "variables": {
+    "boot_command_prefix": "<esc><esc><enter><wait>",
+    "cleanup_pause": "",
+    "cpus": "4",
+    "custom_script": ".",
+    "desktop": "false",
+    "disk_size": "10000",
+    "ftp_proxy": "{{env `ftp_proxy`}}",
+    "headless": "",
+    "hostname": "vagrant",
+    "http_proxy": "{{env `http_proxy`}}",
+    "https_proxy": "{{env `https_proxy`}}",
+    "install_dev_packages": "false",
+    "install_vagrant_key": "true",
+    "iso_checksum": "e2ecdace33c939527cbc9e8d23576381c493b071107207d2040af72595f8990b",
+    "iso_checksum_type": "sha256",
+    "iso_name": "ubuntu-18.04.4-server-amd64.iso",
+    "iso_url": "http://cdimage.ubuntu.com/ubuntu/releases/18.04/release/ubuntu-18.04.4-server-amd64.iso",
+    "locale": "en_US",
+    "memory": "4096",
+    "no_proxy": "{{env `no_proxy`}}",
+    "preseed": "preseed.cfg",
+    "rsync_proxy": "{{env `rsync_proxy`}}",
+    "ssh_fullname": "vagrant",
+    "ssh_password": "ubuntu",
+    "ssh_username": "ubuntu",
+    "update": "false",
+    "vagrantfile_template": "",
+    "version": "0.1.0",
+    "vm_name": "ubuntu1804"
+  }
+}
+