Add more Firecracker microVM scripts

firecracker/get_rootfs.bash

@@ -1,92 +0,0 @@
-#!/bin/bash
-# This script downloads the latest Linux kernel and rootfs images from Firecracker CI, patches the rootfs with an SSH key, and creates an ext4 filesystem image.
-
-required_commands=(
-    uname
-    curl
-    basename
-    grep
-    sort
-    tail
-    wget
-    unsquashfs
-    ssh-keygen
-    sudo
-    chown
-    truncate
-    mkfs.ext4
-    e2fsck
-)
-
-missing_commands=()
-for cmd in "${required_commands[@]}"; do
-    if ! command -v "$cmd" >/dev/null 2>&1; then
-        missing_commands+=("$cmd")
-    fi
-done
-
-if [ ${#missing_commands[@]} -ne 0 ]; then
-    echo "ERROR: Missing required program(s): ${missing_commands[*]}" >&2
-    echo "Install missing dependencies and rerun." >&2
-    exit 1
-fi
-
-ARCH="$(uname -m)"
-release_url="https://github.com/firecracker-microvm/firecracker/releases"
-latest_version=$(basename "$(curl -fsSLI -o /dev/null -w "%{url_effective}" "${release_url}/latest")")
-CI_VERSION=${latest_version%.*}
-latest_kernel_key=$(curl "http://spec.ccfc.min.s3.amazonaws.com/?prefix=firecracker-ci/$CI_VERSION/$ARCH/vmlinux-&list-type=2" \
-    | grep -oP "(?<=<Key>)(firecracker-ci/$CI_VERSION/$ARCH/vmlinux-[0-9]+\.[0-9]+\.[0-9]{1,3})(?=</Key>)" \
-    | sort -V | tail -1)
-
-# Download a linux kernel binary
-wget "https://s3.amazonaws.com/spec.ccfc.min/${latest_kernel_key}"
-
-latest_ubuntu_key=$(curl "http://spec.ccfc.min.s3.amazonaws.com/?prefix=firecracker-ci/$CI_VERSION/$ARCH/ubuntu-&list-type=2" \
-    | grep -oP "(?<=<Key>)(firecracker-ci/$CI_VERSION/$ARCH/ubuntu-[0-9]+\.[0-9]+\.squashfs)(?=</Key>)" \
-    | sort -V | tail -1)
-ubuntu_version=$(basename "$latest_ubuntu_key" .squashfs | grep -oE '[0-9]+\.[0-9]+')
-
-# Download a rootfs from Firecracker CI
-wget -O "ubuntu-${ubuntu_version}.squashfs.upstream" "https://s3.amazonaws.com/spec.ccfc.min/$latest_ubuntu_key"
-
-# The rootfs in our CI doesn't contain SSH keys to connect to the VM
-# For the purpose of this demo, let's create one and patch it in the rootfs
-sudo unsquashfs -f "ubuntu-${ubuntu_version}.squashfs.upstream"
-ssh-keygen -f id_rsa -N ""
-sudo cp -v id_rsa.pub squashfs-root/root/.ssh/authorized_keys
-mv -v id_rsa "./ubuntu-${ubuntu_version}.id_rsa"
-# create ext4 filesystem image
-sudo chown -R root:root squashfs-root
-truncate -s 1G "ubuntu-${ubuntu_version}.ext4"
-sudo mkfs.ext4 -d squashfs-root -F "ubuntu-${ubuntu_version}.ext4"
-
-# Verify everything was correctly set up and print versions
-echo
-echo "The following files were downloaded and set up:"
-kernel_files=(./vmlinux-*)
-if [ -e "${kernel_files[0]}" ]; then
-    last_kernel_index=$((${#kernel_files[@]} - 1))
-    KERNEL="${kernel_files[$last_kernel_index]}"
-    echo "Kernel: $KERNEL"
-else
-    echo "ERROR: Kernel image does not exist"
-fi
-
-rootfs_files=(./*.ext4)
-if [ -e "${rootfs_files[0]}" ]; then
-    last_rootfs_index=$((${#rootfs_files[@]} - 1))
-    ROOTFS="${rootfs_files[$last_rootfs_index]}"
-    e2fsck -fn "$ROOTFS" &>/dev/null && echo "Rootfs: $ROOTFS" || echo "ERROR: $ROOTFS is not a valid ext4 fs"
-else
-    echo "ERROR: Rootfs image does not exist"
-fi
-
-key_files=(./*.id_rsa)
-if [ -e "${key_files[0]}" ]; then
-    last_key_index=$((${#key_files[@]} - 1))
-    KEY_NAME="${key_files[$last_key_index]}"
-    echo "SSH Key: $KEY_NAME"
-else
-    echo "ERROR: SSH key does not exist"
-fi