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65c8e4c651
Dockerd logs only to stdout/stderr [1], which is lost with
--background. The upstream SysV init script [2] logs to a file by
passing --no-close to start-stop-daemon and redirecting the output,
but that option is not supported by Busybox' start-stop-daemon.
The wrapper script added with this commit captures the output of
dockerd (or whatever other command it is given) and forwards each line
to syslog.
[1] https://github.com/moby/moby/discussions/48260
[2] 50c3d19179/contrib/init/sysvinit-debian/docker
Signed-off-by: Fiona Klute (WIWA) <fiona.klute@gmx.de>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
73 lines
1.5 KiB
Bash
73 lines
1.5 KiB
Bash
#!/bin/sh
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DAEMON="dockerd"
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PIDFILE="/var/run/$DAEMON.pid"
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DOCKERD_ARGS=""
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# shellcheck source=/dev/null
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[ -r "/etc/default/$DAEMON" ] && . "/etc/default/$DAEMON"
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start() {
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printf 'Starting %s: ' "$DAEMON"
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# Dockerd logs only to stdout/stderr, which is lost with
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# --background. The wrapper script runs the given command
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# (after "--", including dockerd) and forwards stdout/stderr
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# to syslog.
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# shellcheck disable=SC2086 # we need word splitting for DOCKERD_ARGS
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start-stop-daemon --start --background --pidfile "$PIDFILE" \
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--exec /usr/libexec/dockerd-syslog-wrapper.sh \
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-- "/usr/bin/$DAEMON" --pidfile "$PIDFILE" $DOCKERD_ARGS
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status=$?
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if [ "$status" -eq 0 ]; then
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echo "OK"
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else
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echo "FAIL"
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fi
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return "$status"
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}
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stop() {
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printf 'Stopping %s: ' "$DAEMON"
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start-stop-daemon --stop --pidfile "$PIDFILE" --exec "/usr/bin/$DAEMON"
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status=$?
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if [ "$status" -eq 0 ]; then
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echo "OK"
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else
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echo "FAIL"
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return "$status"
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fi
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while start-stop-daemon --stop --test --quiet --pidfile "$PIDFILE" \
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--exec "/usr/bin/$DAEMON"; do
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sleep 0.1
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done
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rm -f "$PIDFILE"
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return "$status"
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}
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restart() {
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stop
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start
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}
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reload() {
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printf "Reloading %s config: " "$DAEMON"
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start-stop-daemon --stop --signal HUP -q --pidfile "$PIDFILE" \
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--exec "/usr/bin/$DAEMON"
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status=$?
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if [ "$status" -eq 0 ]; then
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echo "OK"
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else
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echo "FAIL"
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fi
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return "$status"
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}
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case "$1" in
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start|stop|restart|reload)
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"$1";;
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*)
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echo "Usage: $0 {start|stop|restart|reload}"
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exit 1
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esac
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