Current File : //snap/lxd/current/commands/daemon.activate
#!/bin/sh
set -eu
# Re-exec outside of apparmor confinement
if [ -d /sys/kernel/security/apparmor ] && [ "$(cat /proc/self/attr/current 2>/dev/null)" != "unconfined" ]; then
if ! aa-exec --help >/dev/null 2>&1; then
echo "The LXD snap was unable to run aa-exec, this usually indicates a LXD sideload." >&2
echo "When sideloading, make sure to manually connect all interfaces." >&2
exit 0
fi
exec aa-exec -p unconfined -- "$0" "$@" || true
fi
# shellcheck disable=SC2155
export SNAP_CURRENT="$(realpath "${SNAP}/..")/current"
# shellcheck disable=SC2155
export ARCH="$(basename "$(readlink -f "${SNAP_CURRENT}"/lib/*-linux-gnu*/)")"
export LD_LIBRARY_PATH="${LD_LIBRARY_PATH:-}:${SNAP_CURRENT}/lib:${SNAP_CURRENT}/lib/${ARCH}:${SNAP_CURRENT}/lib/${ARCH}/ceph"
export PATH="${PATH}:${SNAP_CURRENT}/bin"
export LXD_DIR="${LXD_DIR:-"${SNAP_COMMON}/lxd/"}"
echo "=> Starting LXD activation"
# Load our configuration
if [ ! -e "${SNAP_COMMON}/config" ]; then
echo "==> Creating missing snap configuration"
"${SNAP_CURRENT}/meta/hooks/configure"
fi
echo "==> Loading snap configuration"
# shellcheck disable=SC1091
. "${SNAP_COMMON}/config"
daemon_group="${daemon_group:-"lxd"}"
daemon_user_group="${daemon_user_group:-"lxd"}"
# Detect missing socket activation support
echo "==> Checking for socket activation support"
if ! nsenter -t 1 -m systemctl is-active -q snap."${SNAP_INSTANCE_NAME}".daemon.unix.socket; then
sleep 3s
if ! nsenter -t 1 -m systemctl is-active -q snap."${SNAP_INSTANCE_NAME}".daemon.unix.socket; then
echo "===> System doesn't support socket activation, starting LXD now"
nsenter -t 1 -m systemctl start snap."${SNAP_INSTANCE_NAME}".daemon
exit 0
fi
fi
# Start LXD if running as an appliance
SNAP_MODEL="$(nsenter -t 1 -m snap model --assertion | grep "^model: " | cut -d' ' -f2)"
if echo "${SNAP_MODEL}" | grep -q "^lxd-core"; then
echo "==> LXD appliance detected, starting LXD"
nsenter -t 1 -m systemctl start snap."${SNAP_INSTANCE_NAME}".daemon --no-block
exit 0
fi
# Setup the "lxd" user
if ! getent passwd lxd >/dev/null 2>&1; then
echo "==> Creating \"lxd\" user"
if grep -q "^passwd.*extrausers" /var/lib/snapd/hostfs/etc/nsswitch.conf; then
nsenter -t 1 -m useradd --system -M -N --home "${SNAP_COMMON}/lxd" --shell /bin/false --extrausers lxd || true
else
nsenter -t 1 -m useradd --system -M -N --home "${SNAP_COMMON}/lxd" --shell /bin/false lxd || true
fi
fi
# Setup the "lxd" group
if [ "${daemon_group}" = "lxd" ] && ! getent group lxd >/dev/null 2>&1; then
echo "==> Creating \"lxd\" group"
if grep -q "^group.*extrausers" /var/lib/snapd/hostfs/etc/nsswitch.conf; then
nsenter -t 1 -m groupadd --system --extrausers lxd || true
else
nsenter -t 1 -m groupadd --system lxd || true
fi
fi
# Set socket ownership
if getent group "${daemon_group}" >/dev/null 2>&1; then
if [ -e "${SNAP_COMMON}/lxd/unix.socket" ]; then
echo "==> Setting LXD socket ownership"
chgrp "${daemon_group}" "${SNAP_COMMON}/lxd/unix.socket"
fi
fi
if getent group "${daemon_user_group}" >/dev/null 2>&1; then
if [ -e "${SNAP_COMMON}/lxd-user/unix.socket" ]; then
echo "==> Setting LXD user socket ownership"
chgrp "${daemon_user_group}" "${SNAP_COMMON}/lxd-user/unix.socket"
fi
fi
# Check if LXD ever started
if [ ! -e "${SNAP_COMMON}/lxd/database" ]; then
echo "==> LXD never started on this system, no need to start it now"
exit 0
fi
# Check if LXD should start
LXD="lxd"
if [ -x "${SNAP_COMMON}/lxd.debug" ]; then
LXD="${SNAP_COMMON}/lxd.debug"
echo "==> WARNING: Using a custom debug LXD binary!"
fi
echo "==> Checking if LXD needs to be activated"
if ! "${LXD}" activateifneeded; then
echo "====> Activation check failed, forcing activation"
nsenter -t 1 -m systemctl start snap."${SNAP_INSTANCE_NAME}".daemon
fi
exit 0
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