ekovacs commented on a change in pull request #4182: NIFI-7318 Allow 'docker
stop' to gracefully shutdown
URL: https://github.com/apache/nifi/pull/4182#discussion_r404322732
##########
File path: nifi-docker/dockerhub/sh/start.sh
##########
@@ -79,11 +79,12 @@ case ${AUTH} in
esac
# Continuously provide logs so that 'docker logs' can produce them
-tail -F "${NIFI_HOME}/logs/nifi-app.log" &
"${NIFI_HOME}/bin/nifi.sh" run &
nifi_pid="$!"
+tail -F --pid=${nifi_pid} "${NIFI_HOME}/logs/nifi-app.log" &
-trap "echo Received trapped signal, beginning shutdown...;" KILL TERM HUP INT
EXIT;
+trap 'echo Received trapped signal, beginning shutdown...;./bin/nifi.sh
stop;exit 0;' KILL TERM HUP INT;
Review comment:
I know it is not added in this change, but let's remove `KILL` SIGNAL_SPEC,
as trap cannot / nothing can catch sigkill.
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