Run a application daemon with SID that I assign?

[sillyVM]

Is there a way to run a process with static SID that I can assign? say I want a daemon run as SID#0083, is it possible?

 

[sillyVM]

I can't delete the post, but I am trying to ask how to run it with a certain PID (process ID) not SID. Sorry for the confusing topic.

 

[thedaver]

I don't believe you can force a PID.
You can, however, use the daemon routines in perl, bash, etc. to have the application itself find whether it has a related, open PID before it takes an action like opening another instance of itself. Very common function. Check your scripts in /etc/init.d for bash examples.

What purpose had you intended for a specific PID? Perhaps you could ask THAT question?

D.E.R. Management - IT Project Management Consulting

http://www.dermanagement.com/

 

[sillyVM]

What about the pidfile=$(PIDFILE=/var/run/httpd.pid), Doesn't that specify a PID for the process httpd?

No particular purpose, I guess it will make our application easier to identify. Say we have two daemons both uses JAVA, only distinction is different PID, and we want to kill one but not the other, it will be better if we run it with specific PID.

 

[thedaver]

Yes, the file specifies the pid number that is assigned by the kernel.

Have you tried using "ps

http://wwwwwwwwaux"

to see the parameters being used for each job to see if you can differentiate them?

D.E.R. Management - IT Project Management Consulting

http://www.dermanagement.com/

 

[BoldyBald]

hi sillyVM,

try a "echo $PPID" and then consult the bash manual.
There are shell tricks to create files just like the httpd.pid file.

Good luck,

Ted