On 10/1/15 7:17 AM, Rostislav Svoboda wrote:
> Right this is my concern. The behavior is different as the bash
> scripts don't exit. They wait for the process to end. Maybe it's
> correct to be different, I don't know.
If you send signal 10 (kill -l 10 returns USR1) AS got restarted thanks while loop -
https://github.com/wildfly/wildfly-core/blob/master/core-feature-pack/src...
and it doesn't matter if you execute it normally or with LAUNCH_JBOSS_IN_BACKGROUND
don't know what the real use case is to get it restarted
I'm not certain if you were asking ^^^ in general or just in the context
of these init scripts. The answer in general is this is what allows the
:shutdown(restart=true) management operation to work; the restart=true
causes the process to exit with exit code 10. This relies on the launch
script understanding this exit code and starting a new process.
wildfly-init-redhat.sh and wildfly-init-debian.sh do restart by
stop&&start
restart)
$0 stop
$0 start
EAP 6.4.3 RPM init.d script does stop&&start too
restart|reload)
stop
sleep 3
start
RETVAL=$?
;;
There is some magic in the .sh scripts with number 128 and it's related wait command
/ bash / signals
http://tldp.org/LDP/Bash-Beginners-Guide/html/sect_12_02.html#sect_12_02_02
http://veithen.github.io/2014/11/16/sigterm-propagation.html
>
> Yeah, it looks like that LAUNCH_IN_BACKGROUND behavior is pretty much
> implemented
> to satisfy the init.d script we have and is not really useful if you run it
> directly.
it is used in:
https://github.com/wildfly/wildfly-core/blob/master/core-feature-pack/src...
https://github.com/wildfly/wildfly-core/blob/master/core-feature-pack/src...
read kpid < $JBOSS_PIDFILE in stop function
> If that is really so, I am not a fan of having that in standalone.sh
> directly...
>
domain.sh has the same mechanism LAUNCH_JBOSS_IN_BACKGROUND + JBOSS_PIDFILE
If it's removed from both files something will have to be added to the init/systemd
scripts.
Cheers.
Rostislav
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Brian Stansberry
Senior Principal Software Engineer
JBoss by Red Hat