mirror of
https://github.com/vagrant-libvirt/vagrant-libvirt.git
synced 2025-02-25 18:55:27 -06:00
c12b0de254
If planning to repackage a machine that is brought up with vagrant and modified, it is necessary to avoid the default ssh replacement that normally takes place to ensure the subsequent box that is halted and packaged can be accessed by vagrant using the default ssh key subsequently. Add some small documentation notes to help users be aware to this so that they know to set `config.ssh.insert_key = false` when using vagrant to build a box. Fixes: #1116
140 lines
3.2 KiB
Bash
Executable File
140 lines
3.2 KiB
Bash
Executable File
#!/usr/bin/env bash
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#set -xu
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error() {
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local msg="${1}"
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echo "==> ERROR: ${msg}"
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exit 1
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}
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usage() {
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echo "Usage: ${0} IMAGE [BOX] [Vagrantfile.add]"
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echo
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echo "Package a qcow2 image into a vagrant-libvirt reusable box"
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echo ""
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echo "If packaging from a Vagrant machine ensure 'config.ssh.insert_key = false' was "
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echo "set in the original Vagrantfile to avoid removal of the default ssh key, "
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echo "otherwise vagrant will not be able to connect to machines created from this box"
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}
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# Print the image's backing file
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backing(){
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local img=${1}
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qemu-img info "$img" | grep 'backing file:' | cut -d ':' -f2
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}
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# Rebase the image
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rebase(){
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local img=${1}
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qemu-img rebase -p -b "" "$img"
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[[ "$?" -ne 0 ]] && error "Error during rebase"
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}
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# Is absolute path
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isabspath(){
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local path=${1}
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[[ "$path" =~ ^/.* ]]
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}
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if [ -z "$1" ] || [ "$1" = "-h" ] || [ "$1" = "--help" ]; then
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usage
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exit 1
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fi
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IMG=$(readlink -e "$1")
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[[ "$?" -ne 0 ]] && error "'$1': No such image"
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IMG_DIR=$(dirname "$IMG")
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IMG_BASENAME=$(basename "$IMG")
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BOX=${2:-}
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# If no box name is supplied infer one from image name
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if [[ -z "$BOX" ]]; then
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BOX_NAME=${IMG_BASENAME%.*}
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BOX=$BOX_NAME.box
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else
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BOX_NAME=$(basename "${BOX%.*}")
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fi
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[[ -f "$BOX" ]] && error "'$BOX': Already exists"
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CWD=$(pwd)
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TMP_DIR="$CWD/_tmp_package"
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TMP_IMG="$TMP_DIR/box.img"
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mkdir -p "$TMP_DIR"
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[[ ! -r "$IMG" ]] && error "'$IMG': Permission denied"
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if [ -n "$3" ] && [ -r "$3" ]; then
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VAGRANTFILE_ADD="$(cat $3)"
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fi
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# We move / copy (when the image has master) the image to the tempdir
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# ensure that it's moved back / removed again
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if [[ -n $(backing "$IMG") ]]; then
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echo "==> Image has backing image, copying image and rebasing ..."
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trap "rm -rf $TMP_DIR" EXIT
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cp "$IMG" "$TMP_IMG"
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rebase "$TMP_IMG"
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else
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if fuser -s "$IMG"; then
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error "Image '$IMG_BASENAME' is used by another process"
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fi
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# move the image to get a speed-up and use less space on disk
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trap 'mv "$TMP_IMG" "$IMG"; rm -rf "$TMP_DIR"' EXIT
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mv "$IMG" "$TMP_IMG"
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fi
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cd "$TMP_DIR"
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#Using the awk int function here to truncate the virtual image size to an
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#integer since the fog-libvirt library does not seem to properly handle
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#floating point.
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IMG_SIZE=$(qemu-img info --output=json "$TMP_IMG" | awk '/virtual-size/{s=int($2)/(1024^3); print (s == int(s)) ? s : int(s)+1 }')
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echo "{$IMG_SIZE}"
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cat > metadata.json <<EOF
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{
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"provider": "libvirt",
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"format": "qcow2",
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"virtual_size": ${IMG_SIZE}
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}
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EOF
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cat > Vagrantfile <<EOF
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Vagrant.configure("2") do |config|
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config.vm.provider :libvirt do |libvirt|
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libvirt.driver = "kvm"
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libvirt.host = ""
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libvirt.connect_via_ssh = false
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libvirt.storage_pool_name = "default"
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end
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${VAGRANTFILE_ADD:-}
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end
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EOF
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echo "==> Creating box, tarring and gzipping"
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if type pigz >/dev/null 2>/dev/null; then
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GZ="pigz"
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else
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GZ="gzip"
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fi
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tar cv -S --totals ./metadata.json ./Vagrantfile ./box.img | $GZ -c > "$BOX"
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# if box is in tmpdir move it to CWD before removing tmpdir
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if ! isabspath "$BOX"; then
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mv "$BOX" "$CWD"
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fi
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echo "==> ${BOX} created"
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echo "==> You can now add the box:"
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echo "==> 'vagrant box add ${BOX} --name ${BOX_NAME}'"
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