LXC: tooling box - add boilerplate to containers (e8cf2250) · Commits · e / infra / spot

utils/lxc.sh

+80 −29

Original line number	Diff line number	Diff line
		@@ -27,12 +27,18 @@ TEST_IMAGES=(
		#"$LINUXCONTAINERS_ORG_NAME:fedora/31" "fedora31"
		)

		ubu1804_boilerplate="
		export DEBIAN_FRONTEND=noninteractive
		apt-get install -y git curl wget
		"
		ubu1904_boilerplate="$ubu1804_boilerplate"

		REMOTE_IMAGES=()
		LOCAL_IMAGES=()

		for ((i=0; i<${#TEST_IMAGES[@]}; i+=2)); do
		REMOTE_IMAGES=("${REMOTE_IMAGES[@]}" "${TEST_IMAGES[i]}")
		LOCAL_IMAGES=("${LOCAL_IMAGES[@]}" "${TEST_IMAGES[i+1]}")
		LOCAL_IMAGES=("${LOCAL_IMAGES[@]}" "${HOST_PREFIX}-${TEST_IMAGES[i+1]}")
		done

		HOST_USER="${SUDO_USER:-$USER}"
		@@ -72,9 +78,26 @@ EOF
		[ ! -z "${1+x}" ] && err_msg "$1"
		}

		lxd_info() {

		cat <<EOF

		LXD is needed, to install run::

		snap install lxd
		lxc init --auto

		EOF
		}

		main() {

		required_commands lxc \|\| exit
		local exit_val

		if ! required_commands lxc; then
		lxd_info
		exit 42
		fi

		local _usage="unknown or missing $1 command $2"

		@@ -118,8 +141,13 @@ main() {
		sudo_or_exit
		shift
		for i in "${LOCAL_IMAGES[@]}"; do
		info_msg "lxc exec ${_BBlue}${HOST_PREFIX}-${i}${_creset} -- ${_BGreen}${*}${_creset}"
		lxc exec "${HOST_PREFIX}-${i}" -- "$@"
		info_msg "call ${_BBlue}${i}${_creset} -- ${_BGreen}${*}${_creset}"
		wait_key 3
		lxc exec "${i}" -- "$@"
		exit_val=$?
		if [ $exit_val -ne 0 ]; then
		err_msg "$exit_val ${_BBlue}${i}${_creset} -- ${_BGreen}${*}${_creset}"
		fi
		done
		;;
		*)
		@@ -129,10 +157,18 @@ main() {

		build_instances() {
		rst_title "Build LXC instances"

		rst_title "copy images" section
		echo
		lxc_copy_images_localy
		#lxc image list local: && wait_key
		lxc image list local: && wait_key
		echo
		rst_title "build containers" section
		echo
		lxc_init_containers
		lxc_config_containers
		lxc_boilerplate_containers
		echo
		lxc list "$HOST_PREFIX"
		}

		@@ -142,7 +178,8 @@ delete_instances() {
		if ask_yn "Do you really want to delete all images"; then
		lxc_delete_containers
		fi
		# lxc list "$HOST_PREFIX"
		echo
		lxc list "$HOST_PREFIX"
		# lxc image list local: && wait_key
		}

		@@ -150,14 +187,13 @@ delete_instances() {
		# ------

		lxc_copy_images_localy() {
		echo
		for ((i=0; i<${#TEST_IMAGES[@]}; i+=2)); do
		if lxc image info "local:${TEST_IMAGES[i+1]}" &>/dev/null; then
		info_msg "image ${TEST_IMAGES[i]} already copied --> ${TEST_IMAGES[i+1]}"
		else
		info_msg "copy image locally ${TEST_IMAGES[i]} --> ${TEST_IMAGES[i+1]}"
		lxc image copy "${TEST_IMAGES[i]}" local: \
		--alias "${TEST_IMAGES[i+1]}" prefix_stdout
		--alias "${TEST_IMAGES[i+1]}" \| prefix_stdout
		fi
		done
		}
		@@ -175,53 +211,68 @@ lxc_delete_images_localy() {
		# ---------

		lxc_cmd() {
		echo
		for i in "${LOCAL_IMAGES[@]}"; do
		info_msg "lxc $* $HOST_PREFIX-$i"
		lxc "$@" "$HOST_PREFIX-$i"
		info_msg "lxc $* $i"
		lxc "$@" "$i"
		done
		}

		lxc_init_containers() {
		echo
		for i in "${LOCAL_IMAGES[@]}"; do
		if lxc info "$HOST_PREFIX-$i" &>/dev/null; then
		info_msg "conatiner '$HOST_PREFIX-$i' already exists"
		if lxc info "$i" &>/dev/null; then
		info_msg "conatiner '$i' already exists"
		else
		info_msg "create conatiner instance: $HOST_PREFIX-$i"
		lxc init "local:$i" "$HOST_PREFIX-$i"
		info_msg "create conatiner instance: $i"
		lxc init "local:$i" "$i"
		fi
		done
		}

		lxc_config_containers() {
		echo
		for i in "${LOCAL_IMAGES[@]}"; do
		info_msg "configure container: ${_BBlue}${i}${_creset}"

		info_msg "map uid/gid from host to conatiner: $HOST_PREFIX-$i"
		info_msg "map uid/gid from host to container"
		# https://lxd.readthedocs.io/en/latest/userns-idmap/#custom-idmaps
		echo -e -n "uid $HOST_USER_ID 1000\\ngid $HOST_GROUP_ID 1000"\
		\| lxc config set "$HOST_PREFIX-$i" raw.idmap -
		\| lxc config set "$i" raw.idmap -

		info_msg "share ${REPO_ROOT} (repo_share) from HOST into container: $HOST_PREFIX-$i"
		info_msg "share ${REPO_ROOT} (repo_share) from HOST into container"
		# https://lxd.readthedocs.io/en/latest/instances/#type-disk
		lxc config device add "$HOST_PREFIX-$i" repo_share disk \
		lxc config device add "$i" repo_share disk \
		source="${REPO_ROOT}" \
		path="/share/$(basename "${REPO_ROOT}")"
		path="/share/$(basename "${REPO_ROOT}")" &>/dev/null
		# lxc config show "$i" && wait_key
		done
		}

		# lxc config show "$HOST_PREFIX-$i" && wait_key
		lxc_boilerplate_containers() {
		local shortname
		local boilerplate_script
		for ((i=0; i<${#TEST_IMAGES[@]}; i+=2)); do
		shortname="${TEST_IMAGES[i+1]}"
		info_msg "install boilerplate: ${_BBlue}${HOST_PREFIX}-${shortname}${_creset}"
		lxc start -q "${HOST_PREFIX}-${shortname}" &>/dev/null
		boilerplate_script="${shortname}_boilerplate"
		boilerplate_script="${!boilerplate_script}"
		if [[ ! -z "${boilerplate_script}" ]]; then
		echo "$boilerplate_script" \
		\| lxc exec "${HOST_PREFIX}-${shortname}" -- bash \
		\| prefix_stdout " ${HOST_PREFIX}-${shortname} \| "
		else
		warn_msg "no boilerplate for instance '$i'"
		fi
		done
		}

		lxc_delete_containers() {
		echo
		for i in "${LOCAL_IMAGES[@]}"; do
		if lxc info "$HOST_PREFIX-$i" &>/dev/null; then
		info_msg "stop & delete instance '$HOST_PREFIX-$i'"
		lxc stop "$HOST_PREFIX-$i" &>/dev/null
		lxc delete "$HOST_PREFIX-$i" \| prefix_stdout
		if lxc info "$i" &>/dev/null; then
		info_msg "stop & delete instance '$i'"
		lxc stop "$i" &>/dev/null
		lxc delete "$i" \| prefix_stdout
		else
		warn_msg "instance '$HOST_PREFIX-$i' does not exist / can't delete :o"
		warn_msg "instance '$i' does not exist / can't delete :o"
		fi
		done
		}