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utils/lxc.sh: support build of selected containers

Browse source 
$ sudo -H ./utils/lxc.sh build  <name>
  $ sudo -H ./utils/lxc.sh show   [images|suite|info|config [<name>]]

Signed-off-by: Markus Heiser <markus.heiser@darmarit.de>
This commit is contained in:
Markus Heiser 2020-04-03 17:08:42 +02:00
parent f32b4fcedd
commit af988dbf71
4 changed files with 195 additions and 87 deletions
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18
docs/utils/lxc.sh.rst
View file

@ -33,14 +33,17 @@ once::
$ lxd init --auto
To make use of the containers from the *searx suite*, you have to build the
:ref:`LXC suite containers <lxc.sh help>` initial. But be warned, this might
take some time::
:ref:`LXC suite containers <lxc.sh help>` initial. But be warned, **this might
take some time**::
$ sudo -H ./utils/lxc.sh build
A cup of coffee later, your LXC suite is build up and you can run whatever task
you want / in a selected or even in all :ref:`LXC suite containers <lxc.sh
help>`.
help>`. If you do not want to build all containers, **you can build just
one**::
$ sudo -H ./utils/lxc.sh build searx-ubu1804
*Good to know ...*
@ -50,9 +53,12 @@ compare output of::
$ sudo -H ./utils/lxc.sh cmd -- ls -la Makefile
...
[searx-ubu2004] -rw-r--r-- 1 root root 7603 Mar 30 11:54 Makefile
[searx-fedora31] -rw-r--r-- 1 root root 7603 Mar 30 11:54 Makefile
[searx-archlinux] -rw-r--r-- 1 root root 7603 Mar 30 11:54 Makefile
In the containers, you can run what ever you want, e.g. to start a bash use::
$ sudo -H ./utils/lxc.sh cmd searx-ubu1804 bash
INFO: [searx-ubu1804] bash
root@searx-ubu1804:/share/searx#
If there comes the time you want to **get rid off all** the containers and
**clean up local images** just type::

31
utils/lib.sh
View file

@ -1118,6 +1118,37 @@ lxc_install_base_packages() {
pkg_install "${LXC_BASE_PACKAGES}"
}
lxc_image_copy() {
# usage: lxc_copy_image <remote image> <local image>
#
# lxc_copy_image "images:ubuntu/19.10" "ubu1910"
if lxc_image_exists "local:${LXC_SUITE[i+1]}"; then
info_msg "image ${LXC_SUITE[i]} already copied --> ${LXC_SUITE[i+1]}"
else
info_msg "copy image locally ${LXC_SUITE[i]} --> ${LXC_SUITE[i+1]}"
lxc image copy "${LXC_SUITE[i]}" local: \
--alias "${LXC_SUITE[i+1]}" | prefix_stdout
fi
}
lxc_init_container() {
# usage: lxc_init_container <image name> <container name>
local image_name="$1"
local container_name="$2"
if lxc info "${container_name}" &>/dev/null; then
info_msg "container '${container_name}' already exists"
else
info_msg "create container instance: ${container_name}"
lxc init "local:${image_name}" "${container_name}"
fi
}
lxc_exists(){
# usage: lxc_exists <name> || echo "container <name> does not exists"

3
utils/lxc-searx.env
View file

@ -15,6 +15,9 @@ lxc_set_suite_env() {
export LINUXCONTAINERS_ORG_NAME="${LINUXCONTAINERS_ORG_NAME:-images}"
export LXC_HOST_PREFIX="${LXC_HOST_PREFIX:-searx}"
export LXC_SUITE=(
# to disable containers, comment out lines ..
# end of standard support see https://wiki.ubuntu.com/Releases
"$LINUXCONTAINERS_ORG_NAME:ubuntu/16.04" "ubu1604" # April 2021
"$LINUXCONTAINERS_ORG_NAME:ubuntu/18.04" "ubu1804" # April 2023

200
utils/lxc.sh
View file

@ -76,16 +76,17 @@ usage() {
usage::
$_cmd build [containers]
$_cmd build [containers|<name>]
$_cmd copy [images]
$_cmd remove [containers|<name>|images]
$_cmd [start|stop] [containers|<name>]
$_cmd show [info|config|suite|images]
$_cmd show [images|suite|info|config [<name>]]
$_cmd cmd [--|<name>] '...'
$_cmd install [suite|base]
build
:containers: build, launch and 'install basic' packages on 'containers'
:containers: build, launch all containers and 'install base' packages
:<name>: build, launch container <name> and 'install base' packages
copy:
:images: copy remote images of the suite into local storage
remove
@ -93,10 +94,10 @@ remove
:images: delete local images of the suite
start/stop
:containers: start/stop all 'containers' from the suite
:<name>: start/stop conatiner <name> from suite
:<name>: start/stop container <name> from suite
show
:info: show info of all the containers from LXC suite
:config: show config of all the containers from the LXC suite
:info: show info of all (or <name>) containers from LXC suite
:config: show config of all (or <name>) containers from the LXC suite
:suite: show services of all the containers from the LXC suite
:images: show information of local images
cmd
@ -162,7 +163,8 @@ main() {
build)
sudo_or_exit
case $2 in
''|containers) build_instances ;;
${LXC_HOST_PREFIX}-*) build_container "$2" ;;
''|containers) build_all_containers ;;
*) usage "$_usage"; exit 42;;
esac
;;
@ -175,11 +177,11 @@ main() {
remove)
sudo_or_exit
case $2 in
''|containers) remove_instances ;;
''|containers) remove_containers ;;
images) lxc_delete_images_localy ;;
${LXC_HOST_PREFIX}-*)
! lxc_exists "$2" && usage_containers "unknown container: $2" && exit 42
if ask_yn "Do you really want to delete conatiner $2"; then
if ask_yn "Do you really want to delete container $2"; then
lxc_delete_container "$2"
fi
;;
@ -201,20 +203,42 @@ main() {
show)
sudo_or_exit
case $2 in
suite) show_suite ;;
suite)
case $3 in
${LXC_HOST_PREFIX}-*)
lxc exec -t "$3" -- "${LXC_REPO_ROOT}/utils/lxc.sh" __show suite \
| prefix_stdout "[${_BBlue}$3${_creset}] "
;;
*) show_suite;;
esac
;;
images) show_images ;;
config)
case $3 in
${LXC_HOST_PREFIX}-*)
lxc config show "$3" | prefix_stdout "[${_BBlue}${3}${_creset}] "
;;
*)
rst_title "container configurations"
echo
lxc list "$LXC_HOST_PREFIX-"
echo
lxc_cmd config show
;;
esac
;;
info)
case $3 in
${LXC_HOST_PREFIX}-*)
lxc info "$3" | prefix_stdout "[${_BBlue}${3}${_creset}] "
;;
*)
rst_title "container info"
echo
lxc_cmd info
;;
esac
;;
*) usage "$_usage"; exit 42;;
esac
;;
@ -265,28 +289,69 @@ main() {
}
build_instances() {
rst_title "Build LXC instances"
build_all_containers() {
rst_title "Build all LXC containers of suite"
usage_containers
lxc_copy_images_localy
echo
rst_title "build containers" section
echo
lxc_init_containers
lxc_config_containers
lxc_boilerplate_containers
lxc_init_all_containers
lxc_config_all_containers
lxc_boilerplate_all_containers
rst_title "install LXC base packages" section
echo
lxc_exec "${LXC_REPO_ROOT}/utils/lxc.sh" __install base
echo
lxc list "$LXC_HOST_PREFIX"
}
remove_instances() {
rst_title "Remove LXC instances"
build_container() {
rst_title "Build container $1"
local remote_image
local container
local image
local boilerplate_script
for ((i=0; i<${#LXC_SUITE[@]}; i+=2)); do
if [ "${LXC_HOST_PREFIX}-${LXC_SUITE[i+1]}" = "$1" ]; then
remote_image="${LXC_SUITE[i]}"
container="${LXC_HOST_PREFIX}-${LXC_SUITE[i+1]}"
image="${LXC_SUITE[i+1]}"
boilerplate_script="${image}_boilerplate"
boilerplate_script="${!boilerplate_script}"
break
fi
done
echo
if [ -z "$container" ]; then
err_msg "container $1 unknown"
usage_containers
return 42
fi
lxc_image_copy "${remote_image}" "${image}"
rst_title "init container" section
lxc_init_container "${image}" "${container}"
rst_title "configure container" section
lxc_config_container "${container}"
rst_title "run LXC boilerplate scripts" section
lxc_install_boilerplate "${container}" "$boilerplate_script"
echo
rst_title "install LXC base packages" section
lxc_exec_cmd "${container}" "${LXC_REPO_ROOT}/utils/lxc.sh" __install base \
| prefix_stdout "[${_BBlue}${container}${_creset}] "
echo
lxc list "$container"
}
remove_containers() {
rst_title "Remove all LXC containers of suite"
rst_para "existing containers matching ${_BGreen}$LXC_HOST_PREFIX-*${_creset}"
echo
lxc list "$LXC_HOST_PREFIX-"
echo -en "\\n${_BRed}LXC containers to delete::${_creset}\\n\\n ${CONTAINERS[*]}\\n" | $FMT
if ask_yn "Do you really want to delete these conatiners"; then
if ask_yn "Do you really want to delete these containers"; then
for i in "${CONTAINERS[@]}"; do
lxc_delete_container "$i"
done
@ -302,13 +367,7 @@ lxc_copy_images_localy() {
rst_title "copy images" section
echo
for ((i=0; i<${#LXC_SUITE[@]}; i+=2)); do
if lxc_image_exists "local:${LXC_SUITE[i+1]}"; then
info_msg "image ${LXC_SUITE[i]} already copied --> ${LXC_SUITE[i+1]}"
else
info_msg "copy image locally ${LXC_SUITE[i]} --> ${LXC_SUITE[i+1]}"
lxc image copy "${LXC_SUITE[i]}" local: \
--alias "${LXC_SUITE[i+1]}" | prefix_stdout
fi
lxc_image_copy "${LXC_SUITE[i]}" "${LXC_SUITE[i+1]}"
done
# lxc image list local: && wait_key
}
@ -408,61 +467,74 @@ lxc_exec() {
done
}
lxc_init_containers() {
lxc_init_all_containers() {
rst_title "init all containers" section
local image_name
local container_name
for ((i=0; i<${#LXC_SUITE[@]}; i+=2)); do
lxc_init_container "${LXC_SUITE[i+1]}" "${LXC_HOST_PREFIX}-${image_name}"
done
}
lxc_config_all_containers() {
rst_title "configure all containers" section
for i in "${CONTAINERS[@]}"; do
lxc_config_container "${i}"
done
}
lxc_config_container() {
info_msg "[${_BBlue}$1${_creset}] configure container ..."
info_msg "[${_BBlue}$1${_creset}] map uid/gid from host to container"
# https://lxd.readthedocs.io/en/latest/userns-idmap/#custom-idmaps
echo -e -n "uid $HOST_USER_ID 0\\ngid $HOST_GROUP_ID 0"\
| lxc config set "$1" raw.idmap -
info_msg "[${_BBlue}$1${_creset}] share ${REPO_ROOT} (repo_share) from HOST into container"
# https://lxd.readthedocs.io/en/latest/instances/#type-disk
lxc config device add "$1" repo_share disk \
source="${REPO_ROOT}" \
path="${LXC_REPO_ROOT}" &>/dev/null
# lxc config show "$1" && wait_key
}
lxc_boilerplate_all_containers() {
rst_title "run LXC boilerplate scripts" section
local boilerplate_script
local image_name
for ((i=0; i<${#LXC_SUITE[@]}; i+=2)); do
image_name="${LXC_SUITE[i+1]}"
container_name="${LXC_HOST_PREFIX}-${image_name}"
boilerplate_script="${image_name}_boilerplate"
boilerplate_script="${!boilerplate_script}"
if lxc info "${container_name}" &>/dev/null; then
info_msg "container '${container_name}' already exists"
else
info_msg "create conatiner instance: ${container_name}"
lxc init "local:${image_name}" "${container_name}"
lxc_install_boilerplate "${LXC_HOST_PREFIX}-${image_name}" "$boilerplate_script"
if [[ -z "${boilerplate_script}" ]]; then
err_msg "[${_BBlue}${container_name}${_creset}] no boilerplate for image '${image_name}'"
fi
done
}
lxc_config_containers() {
for i in "${CONTAINERS[@]}"; do
info_msg "[${_BBlue}${i}${_creset}] configure container ..."
lxc_install_boilerplate() {
info_msg "[${_BBlue}${i}${_creset}] map uid/gid from host to container"
# https://lxd.readthedocs.io/en/latest/userns-idmap/#custom-idmaps
echo -e -n "uid $HOST_USER_ID 0\\ngid $HOST_GROUP_ID 0"\
| lxc config set "$i" raw.idmap -
# usage: lxc_install_boilerplate <container-name> <string: shell commands ..>
#
# usage: lxc_install_boilerplate searx-archlinux "${archlinux_boilerplate}"
info_msg "[${_BBlue}${i}${_creset}] share ${REPO_ROOT} (repo_share) from HOST into container"
# https://lxd.readthedocs.io/en/latest/instances/#type-disk
lxc config device add "$i" repo_share disk \
source="${REPO_ROOT}" \
path="${LXC_REPO_ROOT}" &>/dev/null
# lxc config show "$i" && wait_key
done
}
lxc_boilerplate_containers() {
local image_name
local container_name
local boilerplate_script
for ((i=0; i<${#LXC_SUITE[@]}; i+=2)); do
image_name="${LXC_SUITE[i+1]}"
container_name="${LXC_HOST_PREFIX}-${image_name}"
boilerplate_script="${image_name}_boilerplate"
boilerplate_script="${!boilerplate_script}"
local container_name="$1"
local boilerplate_script="$2"
info_msg "[${_BBlue}${container_name}${_creset}] init .."
if lxc start -q "${container_name}" &>/dev/null; then
sleep 5 # guest needs some time to come up and get an IP
fi
lxc_init_container "${container_name}"
info_msg "[${_BBlue}${container_name}${_creset}] install /.lxcenv.mk .."
cat <<EOF | lxc exec "${container_name}" -- bash | prefix_stdout "[${_BBlue}${container_name}${_creset}] "
rm -f "/.lxcenv.mk"
@ -470,7 +542,7 @@ ln -s "${LXC_REPO_ROOT}/utils/makefile.lxc" "/.lxcenv.mk"
ls -l "/.lxcenv.mk"
EOF
info_msg "[${_BBlue}${container_name}${_creset}] install boilerplate .."
info_msg "[${_BBlue}${container_name}${_creset}] run LXC boilerplate scripts .."
if lxc start -q "${container_name}" &>/dev/null; then
sleep 5 # guest needs some time to come up and get an IP
fi
@ -478,11 +550,7 @@ EOF
echo "${boilerplate_script}" \
| lxc exec "${container_name}" -- bash \
| prefix_stdout "[${_BBlue}${container_name}${_creset}] "
else
err_msg "[${_BBlue}${container_name}${_creset}] no boilerplate for image '${image_name}'"
fi
done
}