[FORGEJO] sync lxc-helpers 8a6034cb09215b8634eb43608c35923517506e49
This commit is contained in:
Earl Warren
parent
2069b04779
commit
9ede3e638c
2 changed files with 447 additions and 0 deletions
311
pkg/runner/lxc-helpers-lib.sh
Executable file
311
pkg/runner/lxc-helpers-lib.sh
Executable file
|
|
@ -0,0 +1,311 @@
|
|||
#!/bin/bash
|
||||
# SPDX-License-Identifier: MIT
|
||||
|
||||
export DEBIAN_FRONTEND=noninteractive
|
||||
|
||||
LXC_SELF_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
|
||||
LXC_BIN=/usr/local/bin
|
||||
|
||||
: ${LXC_SUDO:=}
|
||||
: ${LXC_CONTAINER_RELEASE:=bookworm}
|
||||
: ${LXC_HOME:=/home}
|
||||
: ${LXC_VERBOSE:=false}
|
||||
|
||||
source /etc/os-release
|
||||
|
||||
function lxc_release() {
|
||||
echo $VERSION_CODENAME
|
||||
}
|
||||
|
||||
function lxc_template_release() {
|
||||
echo lxc-helpers-$LXC_CONTAINER_RELEASE
|
||||
}
|
||||
|
||||
function lxc_root() {
|
||||
local name="$1"
|
||||
|
||||
echo /var/lib/lxc/$name/rootfs
|
||||
}
|
||||
|
||||
function lxc_config() {
|
||||
local name="$1"
|
||||
|
||||
echo /var/lib/lxc/$name/config
|
||||
}
|
||||
|
||||
function lxc_container_run() {
|
||||
local name="$1"
|
||||
shift
|
||||
|
||||
$LXC_SUDO lxc-attach --clear-env --name $name -- "$@"
|
||||
}
|
||||
|
||||
function lxc_container_run_script_as() {
|
||||
local name="$1"
|
||||
local user="$2"
|
||||
local script="$3"
|
||||
|
||||
$LXC_SUDO chmod +x $(lxc_root $name)$script
|
||||
$LXC_SUDO lxc-attach --name $name -- sudo --user $user $script
|
||||
}
|
||||
|
||||
function lxc_container_run_script() {
|
||||
local name="$1"
|
||||
local script="$2"
|
||||
|
||||
$LXC_SUDO chmod +x $(lxc_root $name)$script
|
||||
lxc_container_run $name $script
|
||||
}
|
||||
|
||||
function lxc_container_inside() {
|
||||
local name="$1"
|
||||
shift
|
||||
|
||||
lxc_container_run $name $LXC_BIN/lxc-helpers.sh "$@"
|
||||
}
|
||||
|
||||
function lxc_container_user_install() {
|
||||
local name="$1"
|
||||
local user_id="$2"
|
||||
local user="$3"
|
||||
|
||||
if test "$user" = root ; then
|
||||
return
|
||||
fi
|
||||
|
||||
local root=$(lxc_root $name)
|
||||
|
||||
if ! $LXC_SUDO grep --quiet "^$user " $root/etc/sudoers ; then
|
||||
$LXC_SUDO tee $root/usr/local/bin/lxc-helpers-create-user.sh > /dev/null <<EOF
|
||||
#!/bin/bash
|
||||
set -ex
|
||||
|
||||
mkdir -p $LXC_HOME
|
||||
useradd --base-dir $LXC_HOME --create-home --shell /bin/bash --uid $user_id $user
|
||||
for group in docker kvm libvirt ; do
|
||||
if grep --quiet \$group /etc/group ; then adduser $user \$group ; fi
|
||||
done
|
||||
echo "$user ALL=(ALL) NOPASSWD:ALL" >> /etc/sudoers
|
||||
sudo --user $user ssh-keygen -b 2048 -N '' -f $LXC_HOME/$user/.ssh/id_rsa
|
||||
EOF
|
||||
lxc_container_run_script $name /usr/local/bin/lxc-helpers-create-user.sh
|
||||
fi
|
||||
}
|
||||
|
||||
function lxc_maybe_sudo() {
|
||||
if test $(id -u) != 0 ; then
|
||||
LXC_SUDO=sudo
|
||||
fi
|
||||
}
|
||||
|
||||
function lxc_prepare_environment() {
|
||||
lxc_maybe_sudo
|
||||
if ! $(which lxc-create > /dev/null) ; then
|
||||
$LXC_SUDO apt-get install -y -qq make git libvirt0 libpam-cgfs bridge-utils uidmap dnsmasq-base dnsmasq dnsmasq-utils qemu-user-static
|
||||
fi
|
||||
}
|
||||
|
||||
function lxc_container_configure() {
|
||||
local name="$1"
|
||||
|
||||
$LXC_SUDO tee -a $(lxc_config $name) > /dev/null <<'EOF'
|
||||
security.nesting = true
|
||||
lxc.cap.drop =
|
||||
lxc.apparmor.profile = unconfined
|
||||
#
|
||||
# /dev/net (docker won't work without /dev/net/tun)
|
||||
#
|
||||
lxc.cgroup2.devices.allow = c 10:200 rwm
|
||||
lxc.mount.entry = /dev/net dev/net none bind,create=dir 0 0
|
||||
#
|
||||
# /dev/kvm (libvirt / kvm won't work without /dev/kvm)
|
||||
#
|
||||
lxc.cgroup2.devices.allow = c 10:232 rwm
|
||||
lxc.mount.entry = /dev/kvm dev/kvm none bind,create=file 0 0
|
||||
#
|
||||
# /dev/loop
|
||||
#
|
||||
lxc.cgroup2.devices.allow = c 10:237 rwm
|
||||
lxc.cgroup2.devices.allow = b 7:* rwm
|
||||
lxc.mount.entry = /dev/loop-control dev/loop-control none bind,create=file 0 0
|
||||
#
|
||||
# /dev/mapper
|
||||
#
|
||||
lxc.cgroup2.devices.allow = c 10:236 rwm
|
||||
lxc.mount.entry = /dev/mapper dev/mapper none bind,create=dir 0 0
|
||||
#
|
||||
# /dev/fuse
|
||||
#
|
||||
lxc.cgroup2.devices.allow = b 10:229 rwm
|
||||
lxc.mount.entry = /dev/fuse dev/fuse none bind,create=file 0 0
|
||||
EOF
|
||||
|
||||
|
||||
#
|
||||
# Wait for the network to come up
|
||||
#
|
||||
local wait_networking=$(lxc_root $name)/usr/local/bin/lxc-helpers-wait-networking.sh
|
||||
$LXC_SUDO tee $wait_networking > /dev/null <<'EOF'
|
||||
#!/bin/sh -e
|
||||
for d in $(seq 60); do
|
||||
getent hosts wikipedia.org > /dev/null && break
|
||||
sleep 1
|
||||
done
|
||||
getent hosts wikipedia.org > /dev/null || getent hosts wikipedia.org
|
||||
EOF
|
||||
$LXC_SUDO chmod +x $wait_networking
|
||||
}
|
||||
|
||||
function lxc_container_create() {
|
||||
local name="$1"
|
||||
|
||||
lxc_prepare_environment
|
||||
lxc_build_template $(lxc_template_release) "$name"
|
||||
}
|
||||
|
||||
function lxc_container_mount() {
|
||||
local name="$1"
|
||||
local dir="$2"
|
||||
|
||||
local config=$(lxc_config $name)
|
||||
|
||||
if ! $LXC_SUDO grep --quiet "lxc.mount.entry = $dir" $config ; then
|
||||
local relative_dir=${dir##/}
|
||||
$LXC_SUDO tee -a $config > /dev/null <<< "lxc.mount.entry = $dir $relative_dir none bind,create=dir 0 0"
|
||||
fi
|
||||
}
|
||||
|
||||
|
||||
function lxc_container_start() {
|
||||
local name="$1"
|
||||
|
||||
if lxc_running $name ; then
|
||||
return
|
||||
fi
|
||||
|
||||
local logs
|
||||
if $LXC_VERBOSE; then
|
||||
logs="--logfile=/dev/tty"
|
||||
fi
|
||||
|
||||
$LXC_SUDO lxc-start $logs $name
|
||||
$LXC_SUDO lxc-wait --name $name --state RUNNING
|
||||
lxc_container_run $name /usr/local/bin/lxc-helpers-wait-networking.sh
|
||||
}
|
||||
|
||||
function lxc_container_stop() {
|
||||
local name="$1"
|
||||
|
||||
$LXC_SUDO lxc-ls -1 --running --filter="^$name" | while read container ; do
|
||||
$LXC_SUDO lxc-stop --kill --name="$container"
|
||||
done
|
||||
}
|
||||
|
||||
function lxc_container_destroy() {
|
||||
local name="$1"
|
||||
local root="$2"
|
||||
|
||||
if lxc_exists "$name" ; then
|
||||
lxc_container_stop $name $root
|
||||
$LXC_SUDO lxc-destroy --force --name="$name"
|
||||
fi
|
||||
}
|
||||
|
||||
function lxc_exists() {
|
||||
local name="$1"
|
||||
|
||||
test "$($LXC_SUDO lxc-ls --filter=^$name\$)"
|
||||
}
|
||||
|
||||
function lxc_running() {
|
||||
local name="$1"
|
||||
|
||||
test "$($LXC_SUDO lxc-ls --running --filter=^$name\$)"
|
||||
}
|
||||
|
||||
function lxc_build_template_release() {
|
||||
local name="$(lxc_template_release)"
|
||||
|
||||
if lxc_exists $name ; then
|
||||
return
|
||||
fi
|
||||
|
||||
local root=$(lxc_root $name)
|
||||
local packages="sudo,git,python3"
|
||||
$LXC_SUDO lxc-create --name $name --template debian -- --release=$LXC_CONTAINER_RELEASE --packages="$packages"
|
||||
$LXC_SUDO cp -a $LXC_SELF_DIR/lxc-helpers*.sh $root/$LXC_BIN
|
||||
lxc_container_configure $name
|
||||
}
|
||||
|
||||
function lxc_build_template() {
|
||||
local name="$1"
|
||||
local newname="$2"
|
||||
|
||||
if lxc_exists $newname ; then
|
||||
return
|
||||
fi
|
||||
|
||||
if test "$name" = "$(lxc_template_release)" ; then
|
||||
lxc_build_template_release
|
||||
fi
|
||||
|
||||
if ! $LXC_SUDO lxc-copy --name=$name --newname=$newname ; then
|
||||
echo lxc-copy --name=$name --newname=$newname failed
|
||||
return 1
|
||||
fi
|
||||
}
|
||||
|
||||
function lxc_apt_install() {
|
||||
local name="$1"
|
||||
shift
|
||||
|
||||
lxc_container_inside $name lxc_apt_install_inside "$@"
|
||||
}
|
||||
|
||||
function lxc_apt_install_inside() {
|
||||
DEBIAN_FRONTEND=noninteractive apt-get install -y -qq "$@"
|
||||
}
|
||||
|
||||
function lxc_install_lxc() {
|
||||
local name="$1"
|
||||
local prefix="$2"
|
||||
|
||||
lxc_container_inside $name lxc_install_lxc_inside $prefix
|
||||
}
|
||||
|
||||
function lxc_install_lxc_inside() {
|
||||
local prefix="$1"
|
||||
|
||||
local packages="make git libvirt0 libpam-cgfs bridge-utils uidmap dnsmasq-base dnsmasq dnsmasq-utils qemu-user-static lxc-templates debootstrap"
|
||||
if test "$(lxc_release)" = bookworm ; then
|
||||
packages="$packages distro-info"
|
||||
fi
|
||||
|
||||
lxc_apt_install_inside $packages
|
||||
|
||||
if ! systemctl is-active --quiet lxc-net; then
|
||||
systemctl disable --now dnsmasq
|
||||
apt-get install -y -qq lxc
|
||||
systemctl stop lxc-net
|
||||
sed -i -e '/ConditionVirtualization/d' $root/usr/lib/systemd/system/lxc-net.service
|
||||
systemctl daemon-reload
|
||||
cat >> /etc/default/lxc-net <<EOF
|
||||
LXC_ADDR="$prefix.1"
|
||||
LXC_NETMASK="255.255.255.0"
|
||||
LXC_NETWORK="$prefix.0/24"
|
||||
LXC_DHCP_RANGE="$prefix.2,$prefix.254"
|
||||
LXC_DHCP_MAX="253"
|
||||
EOF
|
||||
systemctl start lxc-net
|
||||
fi
|
||||
}
|
||||
|
||||
function lxc_install_docker() {
|
||||
local name="$1"
|
||||
|
||||
lxc_container_inside $name lxc_install_docker_inside
|
||||
}
|
||||
|
||||
function lxc_install_docker_inside() {
|
||||
lxc_apt_install_inside docker.io docker-compose
|
||||
}
|
||||
136
pkg/runner/lxc-helpers.sh
Executable file
136
pkg/runner/lxc-helpers.sh
Executable file
|
|
@ -0,0 +1,136 @@
|
|||
#!/usr/bin/env bash
|
||||
# SPDX-License-Identifier: MIT
|
||||
|
||||
set -e
|
||||
|
||||
source $(dirname $0)/lxc-helpers-lib.sh
|
||||
|
||||
function verbose() {
|
||||
set -x
|
||||
PS4='${BASH_SOURCE[0]}:$LINENO: ${FUNCNAME[0]}: '
|
||||
LXC_VERBOSE=true
|
||||
}
|
||||
|
||||
function help() {
|
||||
cat <<'EOF'
|
||||
lxc-helpers.sh - LXC container management helpers
|
||||
|
||||
SYNOPSIS
|
||||
|
||||
lxc-helpers.sh [-v|--verbose] [-h|--help]
|
||||
[-o|--os {bookworm|bullseye} (default bookworm)]
|
||||
command [arguments]
|
||||
|
||||
DESCRIPTION
|
||||
|
||||
A thin shell based layer on top of LXC to create, populate, run and
|
||||
destroy LXC containers. A container is created from a copy of an
|
||||
existing container.
|
||||
|
||||
CREATE AND DESTROY
|
||||
|
||||
lxc_prepare_environment
|
||||
|
||||
Install LXC dependencies.
|
||||
|
||||
lxc_container_create `name`
|
||||
|
||||
Create the `name` container.
|
||||
|
||||
lxc_container_mount `name` `path`
|
||||
|
||||
Configure `name` container to bind mount `path` so that it is
|
||||
also accessible at `path` from within the container.
|
||||
|
||||
lxc_container_start `name`
|
||||
|
||||
Start the `name` container.
|
||||
|
||||
lxc_container_stop `name`
|
||||
|
||||
Stop the `name` container.
|
||||
|
||||
lxc_container_destroy `name`
|
||||
|
||||
Call lxc_container_stop `name` and destroy the container.
|
||||
|
||||
lxc_template_release
|
||||
|
||||
Echo the name of the container for the Operating System
|
||||
specified with `--os`.
|
||||
|
||||
lxc_build_template `existing_container` `new_container`
|
||||
|
||||
Copy `existing_container` into `new_container`. If
|
||||
`existing_container` is equal to $(lxc-helpers.sh lxc_template_release) it
|
||||
will be created on demand.
|
||||
|
||||
ACTIONS IN THE CONTAINER
|
||||
|
||||
For some command lxc_something `name` that can be called from outside the container
|
||||
there is an equivalent function lxc_something_inside that can be called from inside
|
||||
the container.
|
||||
|
||||
lxc_install_lxc `name` `prefix`
|
||||
lxc_install_lxc_inside `prefix`
|
||||
|
||||
Install LXC in the `name` container to allow the creation of
|
||||
named containers. `prefix` is a class C IP prefix from which
|
||||
containers will obtain their IP (for instance 10.40.50).
|
||||
|
||||
lxc_container_run `name` command [options...]
|
||||
|
||||
Run the `command` within the `name` container.
|
||||
|
||||
lxc_container_run_script `name` `path`
|
||||
lxc_container_run_script_as `name` `user` `path`
|
||||
|
||||
Run the script found at `path` within the `name` container. The
|
||||
environment is cleared before running the script. The first form
|
||||
will run as root, the second form will impersonate `user`.
|
||||
|
||||
lxc_container_user_install `name` `user_id` `user` [`homedir` default `/home`]
|
||||
|
||||
Create the `user` with `user_id` in the `name` container with a
|
||||
HOME at `/homedir/user`. Passwordless sudo permissions are
|
||||
granted to `user`. It is made a member of the groups docker, kvm
|
||||
and libvirt if they exist already. A SSH key is created.
|
||||
|
||||
Example: lxc_container_user_install mycontainer $(id -u) $USER
|
||||
|
||||
EOF
|
||||
}
|
||||
|
||||
function main() {
|
||||
local options=$(getopt -o hvo --long help,verbose,os: -- "$@")
|
||||
[ $? -eq 0 ] || {
|
||||
echo "Incorrect options provided"
|
||||
exit 1
|
||||
}
|
||||
eval set -- "$options"
|
||||
while true; do
|
||||
case "$1" in
|
||||
-v | --verbose)
|
||||
verbose
|
||||
;;
|
||||
-h | --help)
|
||||
help
|
||||
;;
|
||||
-o | --os)
|
||||
LXC_CONTAINER_RELEASE=$2
|
||||
shift
|
||||
;;
|
||||
--)
|
||||
shift
|
||||
break
|
||||
;;
|
||||
esac
|
||||
shift
|
||||
done
|
||||
|
||||
lxc_maybe_sudo
|
||||
|
||||
"$@"
|
||||
}
|
||||
|
||||
main "$@"
|
||||
Loading…
Reference in a new issue