forked from zaclys/searxng
LXC: tooling box - add HOST shares and commandline to containers (WIP)
Signed-off-by: Markus Heiser <markus.heiser@darmarit.de>
This commit is contained in:
parent
e6bf2038c3
commit
0b2b325552
152
utils/lxc.sh
152
utils/lxc.sh
@ -9,6 +9,9 @@ source_dot_config
|
||||
# ----------------------------------------------------------------------------
|
||||
# config
|
||||
# ----------------------------------------------------------------------------
|
||||
#
|
||||
# read also:
|
||||
# - https://lxd.readthedocs.io/en/latest/
|
||||
|
||||
# name of https://images.linuxcontainers.org
|
||||
LINUXCONTAINERS_ORG_NAME="${LINUXCONTAINERS_ORG_NAME:-images}"
|
||||
@ -17,10 +20,11 @@ HOST_PREFIX="${HOST_PREFIX:-searx}"
|
||||
TEST_IMAGES=(
|
||||
"$LINUXCONTAINERS_ORG_NAME:ubuntu/18.04" "ubu1804"
|
||||
"$LINUXCONTAINERS_ORG_NAME:ubuntu/19.04" "ubu1904"
|
||||
"$LINUXCONTAINERS_ORG_NAME:archlinux" "archlinux"
|
||||
|
||||
# TODO: installation of searx & filtron not yet implemented ..
|
||||
#
|
||||
#"$LINUXCONTAINERS_ORG_NAME:archlinux" "archlinux"
|
||||
#"$LINUXCONTAINERS_ORG_NAME:fedora/31" "fedora31"
|
||||
#"ubuntu-minimal:18.04" "ubu1804"
|
||||
#"ubuntu-minimal:19.10" "ubu1910"
|
||||
)
|
||||
|
||||
REMOTE_IMAGES=()
|
||||
@ -31,6 +35,10 @@ for ((i=0; i<${#TEST_IMAGES[@]}; i+=2)); do
|
||||
LOCAL_IMAGES=("${LOCAL_IMAGES[@]}" "${TEST_IMAGES[i+1]}")
|
||||
done
|
||||
|
||||
HOST_USER="${SUDO_USER:-$USER}"
|
||||
HOST_USER_ID=$(id -u "${HOST_USER}")
|
||||
HOST_GROUP_ID=$(id -g "${HOST_USER}")
|
||||
|
||||
# ----------------------------------------------------------------------------
|
||||
usage() {
|
||||
# ----------------------------------------------------------------------------
|
||||
@ -39,13 +47,25 @@ usage() {
|
||||
|
||||
usage::
|
||||
|
||||
$(basename "$0") build [hosts]
|
||||
$(basename "$0") delete [hosts]
|
||||
$(basename "$0") build [containers]
|
||||
$(basename "$0") delete [containers|subordinate]
|
||||
$(basename "$0") [start|stop] [containers]
|
||||
$(basename "$0") inspect [info|config]
|
||||
$(basename "$0") cmd ...
|
||||
|
||||
build / delete
|
||||
build and/or delete all LXC hosts
|
||||
:containers: build and delete all LXC containers
|
||||
add / delete
|
||||
:subordinate: lxd permission to map ${HOST_USER}'s user/group id through
|
||||
start/stop
|
||||
:containers: start/stop of all containers
|
||||
inspect
|
||||
:info: show info of all containers
|
||||
:config: show config of all containers
|
||||
cmd ...
|
||||
run commandline ... in all containers
|
||||
|
||||
all LXC hosts:
|
||||
all LXC containers:
|
||||
${LOCAL_IMAGES[@]}
|
||||
|
||||
EOF
|
||||
@ -53,7 +73,6 @@ EOF
|
||||
}
|
||||
|
||||
main() {
|
||||
rst_title "LXC tooling box" part
|
||||
|
||||
required_commands lxc || exit
|
||||
|
||||
@ -66,15 +85,43 @@ main() {
|
||||
build)
|
||||
sudo_or_exit
|
||||
case $2 in
|
||||
hosts) build_instances ;;
|
||||
containers) build_instances ;;
|
||||
*) usage "$_usage"; exit 42;;
|
||||
esac ;;
|
||||
delete)
|
||||
sudo_or_exit
|
||||
case $2 in
|
||||
hosts) delete_instances ;;
|
||||
containers) delete_instances ;;
|
||||
subordinate) echo; del_subordinate_ids ;;
|
||||
*) usage "$_usage"; exit 42;;
|
||||
esac ;;
|
||||
add)
|
||||
sudo_or_exit
|
||||
case $2 in
|
||||
subordinate) echo; add_subordinate_ids ;;
|
||||
*) usage "$_usage"; exit 42;;
|
||||
esac ;;
|
||||
start|stop)
|
||||
sudo_or_exit
|
||||
case $2 in
|
||||
containers) lxc_cmd "$1" ;;
|
||||
*) usage "$_usage"; exit 42;;
|
||||
esac ;;
|
||||
inspect)
|
||||
sudo_or_exit
|
||||
case $2 in
|
||||
config) lxc_cmd config show;;
|
||||
info) lxc_cmd info;;
|
||||
*) usage "$_usage"; exit 42;;
|
||||
esac ;;
|
||||
cmd)
|
||||
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}-${i}" -- "$@"
|
||||
done
|
||||
;;
|
||||
*)
|
||||
usage "unknown or missing command $1"; exit 42;;
|
||||
esac
|
||||
@ -83,19 +130,25 @@ main() {
|
||||
build_instances() {
|
||||
rst_title "Build LXC instances"
|
||||
lxc_copy_images_localy
|
||||
#lxc image list local: && wait_key
|
||||
lxc_init_containers
|
||||
|
||||
err_msg "WIP / sorry, not implemented yet :o"
|
||||
lxc_config_containers
|
||||
lxc list "$HOST_PREFIX"
|
||||
}
|
||||
|
||||
delete_instances() {
|
||||
rst_title "Delete LXC instances"
|
||||
echo -en "\\nLXC hosts(s)::\\n\\n ${LOCAL_IMAGES[*]}\\n" | $FMT
|
||||
echo -en "\\nLXC containers(s)::\\n\\n ${LOCAL_IMAGES[*]}\\n" | $FMT
|
||||
if ask_yn "Do you really want to delete all images"; then
|
||||
lxc_delete_containers
|
||||
fi
|
||||
# lxc list "$HOST_PREFIX"
|
||||
# lxc image list local: && wait_key
|
||||
}
|
||||
|
||||
# images
|
||||
# ------
|
||||
|
||||
lxc_copy_images_localy() {
|
||||
echo
|
||||
for ((i=0; i<${#TEST_IMAGES[@]}; i+=2)); do
|
||||
@ -107,7 +160,6 @@ lxc_copy_images_localy() {
|
||||
--alias "${TEST_IMAGES[i+1]}" prefix_stdout
|
||||
fi
|
||||
done
|
||||
#lxc image list local:
|
||||
}
|
||||
|
||||
lxc_delete_images_localy() {
|
||||
@ -119,6 +171,17 @@ lxc_delete_images_localy() {
|
||||
#lxc image list local:
|
||||
}
|
||||
|
||||
# container
|
||||
# ---------
|
||||
|
||||
lxc_cmd() {
|
||||
echo
|
||||
for i in "${LOCAL_IMAGES[@]}"; do
|
||||
info_msg "lxc $* $HOST_PREFIX-$i"
|
||||
lxc "$@" "$HOST_PREFIX-$i"
|
||||
done
|
||||
}
|
||||
|
||||
lxc_init_containers() {
|
||||
echo
|
||||
for i in "${LOCAL_IMAGES[@]}"; do
|
||||
@ -129,7 +192,25 @@ lxc_init_containers() {
|
||||
lxc init "local:$i" "$HOST_PREFIX-$i"
|
||||
fi
|
||||
done
|
||||
#lxc list "$HOST_PREFIX"
|
||||
}
|
||||
|
||||
lxc_config_containers() {
|
||||
echo
|
||||
for i in "${LOCAL_IMAGES[@]}"; do
|
||||
|
||||
info_msg "map uid/gid from host to conatiner: $HOST_PREFIX-$i"
|
||||
# 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 -
|
||||
|
||||
info_msg "share ${REPO_ROOT} (repo_share) from HOST into container: $HOST_PREFIX-$i"
|
||||
# https://lxd.readthedocs.io/en/latest/instances/#type-disk
|
||||
lxc config device add "$HOST_PREFIX-$i" repo_share disk \
|
||||
source="${REPO_ROOT}" \
|
||||
path="/share/$(basename "${REPO_ROOT}")"
|
||||
|
||||
# lxc config show "$HOST_PREFIX-$i" && wait_key
|
||||
done
|
||||
}
|
||||
|
||||
lxc_delete_containers() {
|
||||
@ -143,7 +224,46 @@ lxc_delete_containers() {
|
||||
warn_msg "instance '$HOST_PREFIX-$i' does not exist / can't delete :o"
|
||||
fi
|
||||
done
|
||||
#lxc list "$HOST_PREFIX"
|
||||
}
|
||||
|
||||
# subordinates
|
||||
# ------------
|
||||
#
|
||||
# see man: subgid(5), subuid(5), https://lxd.readthedocs.io/en/latest/userns-idmap
|
||||
#
|
||||
# E.g. in the HOST you have uid=1001(user) and/or gid=1001(user) ::
|
||||
#
|
||||
# root:1001:1
|
||||
#
|
||||
# in the CONTAINER::
|
||||
#
|
||||
# config:
|
||||
# raw.idmap: |
|
||||
# uid 1001 1000
|
||||
# gid 1001 1000
|
||||
|
||||
add_subordinate_ids() {
|
||||
if grep "root:${HOST_USER_ID}:1" /etc/subuid -qs; then
|
||||
info_msg "lxd already has permission to map ${HOST_USER_ID}'s user/group id through"
|
||||
else
|
||||
info_msg "add lxd permission to map ${HOST_USER_ID}'s user/group id through"
|
||||
usermod --add-subuids "${HOST_USER_ID}-${HOST_USER_ID}" \
|
||||
--add-subgids "${HOST_GROUP_ID}-${HOST_GROUP_ID}" root
|
||||
fi
|
||||
}
|
||||
|
||||
del_subordinate_ids() {
|
||||
local out
|
||||
if grep "root:${HOST_USER_ID}:1" /etc/subuid -qs; then
|
||||
# TODO: root user is always in use by process 1, how can we remove subordinates?
|
||||
info_msg "remove lxd permission to map ${HOST_USER_ID}'s user/group id through"
|
||||
out=$(usermod --del-subuids "${HOST_USER_ID}-${HOST_USER_ID}" --del-subgids "${HOST_GROUP_ID}-${HOST_GROUP_ID}" root 2>&1)
|
||||
if [ ! -z $? ]; then
|
||||
err_msg "$out"
|
||||
fi
|
||||
else
|
||||
info_msg "lxd does not have permission to map ${HOST_USER_ID}'s user/group id through"
|
||||
fi
|
||||
}
|
||||
|
||||
|
||||
|
Loading…
Reference in New Issue
Block a user