Experimental Physics and
Industrial Control System

Michael Davidsaver via Tech-talk <tech-talk at aps.anl.gov> · Tue, 3 Aug 2021 10:34:38 -0700

On 8/3/21 10:22 AM, Kasemir, Kay wrote:
>  
>> > I am using manage-procs to deploy and manage IOC’s using systemd. ..network drive over nfs at boot that contains the built IOC binaries
> 
>> I think that "After=network.target remote-fs.target" should be enough to ensure ordering.  You could try adding
>> "Requires=network.target remote-fs.target".
> 
> I think we had similar issues with network mounts not being up in time for the IOCs to start when we had just this in the IOC systemd files:
> 
> Requires=autofs.service
> 
> The following belt-and-suspenders approach fixed the problem, though I'm not sure exactly why:
> 
> Requires=autofs.service

I would be reluctant to blindly add this as I think it would make manage-procs
unusable by default for installations w/o autofs.  If a Requires= turns out to
be necessary, manage-procs would probably have to detect this somehow.

This is actually redundant to "BindsTo=autofs.service".

> After=autofs.service

This seems reasonable, and would hopefully be sufficient by itself.

> Wants=autofs.service

This should probably be ok, but would need some testing.  I would expect that
if autofs is installed, that it is installed and should be running.

> BindsTo=autofs.service

cf. https://www.freedesktop.org/software/systemd/man/systemd.unit.html#Wants=

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System