LXC: tooling box - add boilerplate to containers
Signed-off-by: Markus Heiser <markus.heiser@darmarit.de>
This commit is contained in:
Markus Heiser
parent
0b2b325552
commit
e8cf225046
109
utils/lxc.sh
109
utils/lxc.sh
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@ -27,12 +27,18 @@ TEST_IMAGES=(
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#"$LINUXCONTAINERS_ORG_NAME:fedora/31" "fedora31"
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)
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ubu1804_boilerplate="
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export DEBIAN_FRONTEND=noninteractive
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apt-get install -y git curl wget
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"
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ubu1904_boilerplate="$ubu1804_boilerplate"
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REMOTE_IMAGES=()
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LOCAL_IMAGES=()
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for ((i=0; i<${#TEST_IMAGES[@]}; i+=2)); do
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REMOTE_IMAGES=("${REMOTE_IMAGES[@]}" "${TEST_IMAGES[i]}")
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LOCAL_IMAGES=("${LOCAL_IMAGES[@]}" "${TEST_IMAGES[i+1]}")
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LOCAL_IMAGES=("${LOCAL_IMAGES[@]}" "${HOST_PREFIX}-${TEST_IMAGES[i+1]}")
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done
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HOST_USER="${SUDO_USER:-$USER}"
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@ -72,9 +78,26 @@ EOF
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[ ! -z "${1+x}" ] && err_msg "$1"
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}
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lxd_info() {
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cat <<EOF
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LXD is needed, to install run::
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snap install lxd
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lxc init --auto
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EOF
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}
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main() {
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required_commands lxc || exit
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local exit_val
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if ! required_commands lxc; then
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lxd_info
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exit 42
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fi
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local _usage="unknown or missing $1 command $2"
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@ -118,8 +141,13 @@ main() {
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sudo_or_exit
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shift
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for i in "${LOCAL_IMAGES[@]}"; do
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info_msg "lxc exec ${_BBlue}${HOST_PREFIX}-${i}${_creset} -- ${_BGreen}${*}${_creset}"
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lxc exec "${HOST_PREFIX}-${i}" -- "$@"
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info_msg "call ${_BBlue}${i}${_creset} -- ${_BGreen}${*}${_creset}"
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wait_key 3
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lxc exec "${i}" -- "$@"
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exit_val=$?
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if [ $exit_val -ne 0 ]; then
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err_msg "$exit_val ${_BBlue}${i}${_creset} -- ${_BGreen}${*}${_creset}"
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fi
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done
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;;
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*)
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@ -129,10 +157,18 @@ main() {
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build_instances() {
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rst_title "Build LXC instances"
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rst_title "copy images" section
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echo
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lxc_copy_images_localy
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#lxc image list local: && wait_key
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lxc image list local: && wait_key
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echo
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rst_title "build containers" section
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echo
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lxc_init_containers
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lxc_config_containers
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lxc_boilerplate_containers
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echo
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lxc list "$HOST_PREFIX"
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}
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@ -142,7 +178,8 @@ delete_instances() {
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if ask_yn "Do you really want to delete all images"; then
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lxc_delete_containers
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fi
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# lxc list "$HOST_PREFIX"
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echo
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lxc list "$HOST_PREFIX"
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# lxc image list local: && wait_key
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}
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@ -150,14 +187,13 @@ delete_instances() {
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# ------
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lxc_copy_images_localy() {
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echo
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for ((i=0; i<${#TEST_IMAGES[@]}; i+=2)); do
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if lxc image info "local:${TEST_IMAGES[i+1]}" &>/dev/null; then
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info_msg "image ${TEST_IMAGES[i]} already copied --> ${TEST_IMAGES[i+1]}"
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else
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info_msg "copy image locally ${TEST_IMAGES[i]} --> ${TEST_IMAGES[i+1]}"
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lxc image copy "${TEST_IMAGES[i]}" local: \
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--alias "${TEST_IMAGES[i+1]}" prefix_stdout
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--alias "${TEST_IMAGES[i+1]}" | prefix_stdout
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fi
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done
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}
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@ -175,53 +211,68 @@ lxc_delete_images_localy() {
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# ---------
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lxc_cmd() {
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echo
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for i in "${LOCAL_IMAGES[@]}"; do
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info_msg "lxc $* $HOST_PREFIX-$i"
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lxc "$@" "$HOST_PREFIX-$i"
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info_msg "lxc $* $i"
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lxc "$@" "$i"
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done
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}
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lxc_init_containers() {
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echo
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for i in "${LOCAL_IMAGES[@]}"; do
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if lxc info "$HOST_PREFIX-$i" &>/dev/null; then
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info_msg "conatiner '$HOST_PREFIX-$i' already exists"
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if lxc info "$i" &>/dev/null; then
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info_msg "conatiner '$i' already exists"
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else
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info_msg "create conatiner instance: $HOST_PREFIX-$i"
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lxc init "local:$i" "$HOST_PREFIX-$i"
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info_msg "create conatiner instance: $i"
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lxc init "local:$i" "$i"
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fi
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done
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}
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lxc_config_containers() {
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echo
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for i in "${LOCAL_IMAGES[@]}"; do
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info_msg "configure container: ${_BBlue}${i}${_creset}"
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info_msg "map uid/gid from host to conatiner: $HOST_PREFIX-$i"
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info_msg "map uid/gid from host to container"
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# https://lxd.readthedocs.io/en/latest/userns-idmap/#custom-idmaps
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echo -e -n "uid $HOST_USER_ID 1000\\ngid $HOST_GROUP_ID 1000"\
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| lxc config set "$HOST_PREFIX-$i" raw.idmap -
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| lxc config set "$i" raw.idmap -
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info_msg "share ${REPO_ROOT} (repo_share) from HOST into container: $HOST_PREFIX-$i"
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info_msg "share ${REPO_ROOT} (repo_share) from HOST into container"
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# https://lxd.readthedocs.io/en/latest/instances/#type-disk
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lxc config device add "$HOST_PREFIX-$i" repo_share disk \
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lxc config device add "$i" repo_share disk \
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source="${REPO_ROOT}" \
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path="/share/$(basename "${REPO_ROOT}")"
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path="/share/$(basename "${REPO_ROOT}")" &>/dev/null
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# lxc config show "$i" && wait_key
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done
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}
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# lxc config show "$HOST_PREFIX-$i" && wait_key
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lxc_boilerplate_containers() {
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local shortname
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local boilerplate_script
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for ((i=0; i<${#TEST_IMAGES[@]}; i+=2)); do
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shortname="${TEST_IMAGES[i+1]}"
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info_msg "install boilerplate: ${_BBlue}${HOST_PREFIX}-${shortname}${_creset}"
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lxc start -q "${HOST_PREFIX}-${shortname}" &>/dev/null
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boilerplate_script="${shortname}_boilerplate"
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boilerplate_script="${!boilerplate_script}"
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if [[ ! -z "${boilerplate_script}" ]]; then
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echo "$boilerplate_script" \
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| lxc exec "${HOST_PREFIX}-${shortname}" -- bash \
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| prefix_stdout " ${HOST_PREFIX}-${shortname} | "
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else
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warn_msg "no boilerplate for instance '$i'"
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fi
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done
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}
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lxc_delete_containers() {
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echo
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for i in "${LOCAL_IMAGES[@]}"; do
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if lxc info "$HOST_PREFIX-$i" &>/dev/null; then
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info_msg "stop & delete instance '$HOST_PREFIX-$i'"
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lxc stop "$HOST_PREFIX-$i" &>/dev/null
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lxc delete "$HOST_PREFIX-$i" | prefix_stdout
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if lxc info "$i" &>/dev/null; then
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info_msg "stop & delete instance '$i'"
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lxc stop "$i" &>/dev/null
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lxc delete "$i" | prefix_stdout
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else
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warn_msg "instance '$HOST_PREFIX-$i' does not exist / can't delete :o"
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warn_msg "instance '$i' does not exist / can't delete :o"
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fi
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done
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}
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