Re: [EXTERNAL] Re: starting IOC with systemd

["Hu, Yong via Tech-talk" <tech-talk@aps.anl.gov>]

Hi Greg,

I know the instructions in systemd-softioc seem too long (too long; didn't read). I will try to simplify ‘README’ as much as possible.

There is one sentence you probably did not pay enough attention: “CHDIR/EXEC: if you do not have st.cmd in /epics/iocs/example1, you have to set CHDIR and EXEC accordingly. See config.example for reference.”. So you just need to add one more variable “CHDIR=/epics/iocs/myIOCname/iocBoot/iocmyIOCname”.

Cheers,
Yong

From: Tech-talk <tech-talk-bounces@aps.anl.gov> on behalf of Leblanc, Gregory via Tech-talk <tech-talk@aps.anl.gov>
Date: Tuesday, June 27, 2023 at 5:25 PM
To: EPICS Tech Talk <tech-talk@aps.anl.gov>
Subject: RE: [EXTERNAL] Re: starting IOC with systemd

This looks slick, but I don’t quite understand how to set it up.  I ran through the instructions, got procServ installed (still not in EPEL for Centos 9), got system-softioc installed, created /epics/iocs and made the config file, and then got confused.  It says that st.cmd should be in that directory, but st.cmd as generated (I think by makeBaseApp.pl) contains a lot of relative paths.  Does that mean that my whole IOC should have been created in /epics/iocs/myIOCname?  If I do that, my st.cmd will wind up in /epics/iocs/myIOCname/iocBoot/iocmyIOCname/.  That doesn’t match with the default path that shows up in the output of ‘manage-iocs report’, which makes me feel like I’ve missed some steps. 

 

I also found that procServ won’t work with the python that ships with Centos 9 Stream, unless I pulled the change from commit 3330d41 (which apparently landed 6 weeks after the last tarball was made in 2019). 

     Greg

 

--

Gregory Leblanc

Accelerator Engineer

Edwards Accelerator Lab - Ohio University

123 University Terrace

Athens, OH 45701 USA

leblanc@ohio.edu

M: (401) 52-OUAL1 or (401) 526-8251

 

 

From: Tech-talk <tech-talk-bounces@aps.anl.gov> On Behalf Of Sinclair, John via Tech-talk
Sent: Tuesday, June 20, 2023 6:10 PM
To: EPICS Tech Talk <tech-talk@aps.anl.gov>; Ralph Lange <ralph.lange@gmx.de>
Subject: Re: [EXTERNAL] Re: starting IOC with systemd

 

See https://github.com/NSLS-II/systemd-softioc.git . Works beautifully.

 

John Sinclair

ORNL

 

---

From: Tech-talk <tech-talk-bounces@aps.anl.gov> on behalf of Ralph Lange via Tech-talk <tech-talk@aps.anl.gov>
Sent: Tuesday, June 20, 2023 10:44 AM
To: EPICS Tech Talk <tech-talk@aps.anl.gov>
Subject: [EXTERNAL] Re: starting IOC with systemd

 

Hi Dave,

 

On Tue, 20 Jun 2023 at 16:26, David A. Slimmer via Tech-talk <tech-talk@aps.anl.gov> wrote:

I’m trying to setup a pi node so that it starts my IOC at boot time using systemd. [...]

 

Many facilities use procServ to run IOCs, which also provides access to the IOC console.

procServ is known to be handling systemd starting nicely.

 

Cheers,
~Ralph