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195 lines
6.7 KiB
195 lines
6.7 KiB
#!/bin/bash
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function check_container_missing() {
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if container_exists "$CONTAINER"; then
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echoerr "$CONTAINER already created!"
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exit 1
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fi
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}
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function usage() {
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echo 'USAGE with options:'
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echo -e "\t\tlxc-miaou-create <CONTAINER_NAME> -o sameuser[,nesting,ssh]"
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}
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function check() {
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check_container_missing || return 1
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return 0
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}
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function set_options() {
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declare -a options=("$@")
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length=${#options[@]}
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if [[ "$length" -ne 0 ]]; then
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if [[ "$length" -ne 2 ]]; then
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echoerr "unrecognized options: $@" && usage && exit 30
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else
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prefix="${options[0]}"
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option="${options[1]}"
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if [[ "$prefix" == '-o' ]]; then
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IFS=',' read -r -a options <<<"$option"
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for i in ${options[@]}; do
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case "$i" in
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sameuser) OPTION_SAMEUSER=true ;;
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nesting) OPTION_NESTING=true ;;
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ssh) OPTION_SSH=true ;;
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*) echoerr "unrecognized options: $@" && usage && exit 32 ;;
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esac
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done
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# echo "OPTION_SAMEUSER=$OPTION_SAMEUSER, OPTION_NESTING=$OPTION_NESTING, OPTION_SSH=$OPTION_SSH"
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else
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echoerr "unrecognized options prefix: $prefix" && usage && exit 31
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fi
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fi
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shift
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fi
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}
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function create() {
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local PREFIX="miaou:create"
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if [[ "$OPTION_SAMEUSER" == true ]]; then
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miaou_user=$(whoami)
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fi
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echo -n "creating new container <$CONTAINER> based on image <$CONTAINER_RELEASE>... "
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bridge_gw=$(lxc network get lxdbr0 ipv4.address | cut -d'/' -f1)
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packages=(git file bc bash-completion)
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[[ "$OPTION_SSH" == true ]] && packages+=(openssh-server)
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packages_string=$(join ', ' "${packages[@]}")
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timezone=$(cat /etc/timezone)
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debian_repo=$(grep ^deb /etc/apt/sources.list | head -n1 | cut -d '/' -f3)
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user_data="$(
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cat <<EOF
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#cloud-config
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timezone: '$timezone'
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apt:
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preserve_sources_list: false
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conf: |
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Acquire::Retries "60";
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DPkg::Lock::Timeout "60";
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primary:
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- arches: [default]
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uri: http://$debian_repo/debian
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security:
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- arches: [default]
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uri: http://$debian_repo/debian-security
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sources_list: |
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# generated by miaou
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deb \$PRIMARY \$RELEASE main
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deb \$PRIMARY \$RELEASE-updates main
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deb \$SECURITY \$RELEASE-security main
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package_update: true
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package_upgrade: true
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package_reboot_if_required: true
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packages: [ $packages_string ]
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write_files:
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- path: /etc/sudoers.d/10-add_TOOLBOX_to_secure_path
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content: >
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Defaults secure_path="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/TOOLBOX"
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runcmd:
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- [ systemctl, mask, systemd-hostnamed.service ]
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- [ systemctl, disable, e2scrub_reap.service ]
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- [ systemctl, disable, systemd-resolved.service, --now ]
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- [ systemctl, reset-failed ]
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- [ rm, /etc/resolv.conf]
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- [ rm, /etc/sudoers.d/90-cloud-init-users]
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- "echo nameserver $bridge_gw > /etc/resolv.conf"
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final_message: "Container from datasource \$datasource is finally up, after \$UPTIME seconds"
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EOF
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)"
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lxc init local:debian/$CONTAINER_RELEASE/cloud "$CONTAINER" --config user.user-data="$user_data" -q
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# allow directory `SHARED` to be read-write mounted
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lxc config set "$CONTAINER" raw.idmap "both $(id -u) 0" -q
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mkdir -p "$HOME/LXD/SHARED/$CONTAINER"
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lxc config device add "$CONTAINER" SHARED disk source="$HOME/LXD/SHARED/$CONTAINER" path=/mnt/SHARED -q
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lxc config device add "$CONTAINER" TOOLBOX disk source=/TOOLBOX path=/TOOLBOX readonly=true -q
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lxc config device add "$CONTAINER" MIAOU_BASH disk source=$(realpath /opt/miaou-bash) path=/opt/miaou-bash readonly=true -q
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# environment variables
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lxc config set "$CONTAINER" environment.PATH /usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/opt/miaou-bash/tools:/TOOLBOX -q
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lxc config set "$CONTAINER" environment.container lxc -q
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if [[ "$OPTION_NESTING" == true ]]; then
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lxc config set "$CONTAINER" security.nesting true -q
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lxc config device add "$CONTAINER" miaou disk source=/opt/miaou path=/opt/miaou readonly=true -q
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fi
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lxc start "$CONTAINER" -q
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# initializing miaou-bash
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lxc exec "$CONTAINER" -- /opt/miaou-bash/init.sh
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# default configuration files (btm,)
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lxc exec "$CONTAINER" -- mkdir -p /root/.config/bottom
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lxc file push "$MIAOU_BASEDIR/templates/bottom/bottom.toml" "$CONTAINER/root/.config/bottom/bottom.toml" -q
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# purge cloud-init after success
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attempt=0
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max_attempt=10
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delay=0.2
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while ! lxc exec "$CONTAINER" -- bash -c 'systemd-run -q -p After=cloud-final.service -p Type=oneshot --no-block bash -c "\
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cloud-init status --wait &&\
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cp /var/lib/cloud/data/status.json /root/cloud-status.json &&\
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systemctl stop cloud-{config,final,init-local,init}.service &&\
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systemctl disable cloud-{config,final,init-local,init}.service &&\
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systemctl stop cloud-config.target cloud-init.target &&\
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apt-get purge -y cloud-init &&\
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rm -rf /var/lib/cloud && \
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userdel -rf debian \
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" 2>/dev/null '; do
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attempt=$((attempt++))
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if [[ $attempt -gt $max_attempt ]]; then
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echoerr "systemd unavailable after $(bc <<<"$max_attempt * $delay") seconds"
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exit 1
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else
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sleep $delay
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fi
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done
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if [[ "$OPTION_SAMEUSER" == true ]]; then
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if ! lxc exec "$CONTAINER" -- grep "$miaou_user" /etc/passwd; then
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lxc exec "$CONTAINER" -- useradd -ms /bin/bash -G sudo "$miaou_user"
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fi
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if ! lxc exec "$CONTAINER" -- passwd -S "$miaou_user" | cut -d ' ' -f2 | grep -q ^P; then
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shadow_passwd=$(load_yaml_from_expanded credential.shadow)
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shadow_remainder=$(lxc exec "$CONTAINER" -- bash -c "grep $miaou_user /etc/shadow | cut -d':' -f3-")
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lxc exec "$CONTAINER" -- /opt/miaou-bash/tools/append_or_replace "^$miaou_user:.*:" "$miaou_user:$shadow_passwd:$shadow_remainder" /etc/shadow >/dev/null
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fi
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fi
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if [[ "$OPTION_SSH" == true && "$OPTION_SAMEUSER" == true ]]; then
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#FIXME: can be fatser due to openssh-server already installed from cloud-init
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lxc-miaou-enable-ssh "$CONTAINER" >/dev/null
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fi
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PREFIX="" echoinfo OK
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echo "hint: \`lxc login $CONTAINER [--env user=<USER>]\`"
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[[ "$OPTION_SAMEUSER" == true ]] && echo "hint: \`lxc sameuser $CONTAINER\`"
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true
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}
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## MAIN
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. "$MIAOU_BASEDIR/lib/init.sh"
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OPTION_SAMEUSER=false
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OPTION_NESTING=false
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OPTION_SSH=false
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PREFIX="miaou"
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arg1_required "$@" || (usage && exit 1)
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readonly CONTAINER=$1
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readonly CONTAINER_RELEASE="bookworm"
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shift
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set_options "$@"
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readonly FULL_OPTIONS="$@"
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check
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create
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