Re: Bug in AMQ 5.16.3 Linux start script?

[Jean-Baptiste Onofré <jb...@nanthrax.net>]

Hi,

FYI, I created

https://issues.apache.org/jira/browse/AMQ-8425

related to that and I will fix for 5.16.4.

Regards
JB

On 11/11/2021 17:43, J P wrote:
> Isn't there a bug in the ActiveMQ-5.16.3 Linux start-script?
> 
> bin/activemq, line 485 reads:
> 
>         local RET="`ps -o "pid,args" | grep "^\s*$activemq_pid\s.*java"`"
> 
> The problem is (from ps man page):
> 
> "By default, ps selects all processes with the same effective user
> ID (euid=EUID) as the current user and associated with the same
> terminal as the invoker."
> 
> Thus, the script essentially will ONLY find a running process
> that has been started by the SAME LOGIN-SESSION.
> 
> I would say, that is rarely (if ever) the case in real-world scenarios.
> 
> For example, you login to your app-server and start ActiveMQ, then logout.
> At a later point, you login again (new session) and try to stop ActiveMQ.
> But unexpectedly, nothing happens :(
> 
> The fix was simple, in the line above, add the '-e' flag:
> 
>         local RET="`ps -eo "pid,args" | grep "^\s*$activemq_pid\s.*java"`"
> 
> ps -e means it will list ALL processes on the host.
> Then it works as expected.
>