RE: Multiple IOCs on a remote server

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

Depending what your linux OS is,  I ran into issues with the script on ubuntu 18.04 and had to make a few adjustments to get it working.

 

Adam

 

From: Tech-talk <tech-talk-bounces@aps.anl.gov> On Behalf Of Han Lee via Tech-talk
Sent: Tuesday, December 21, 2021 12:08 AM
To: Abdalla Ahmad <Abdalla.Ahmad@sesame.org.jo>
Cc: tech-talk@aps.anl.gov
Subject: Re: Multiple IOCs on a remote server

 

The following repo may help you

 

https://github.com/jeonghanlee/epics_NIOCs

 

 

HTH,

Han

 

On Mon, Dec 20, 2021 at 23:44 Abdalla Ahmad via Tech-talk <tech-talk@aps.anl.gov> wrote:

I think you need to setup UDP broadcasting on the host, see this article: https://wiki-ext.aps.anl.gov/epics/index.php/How_to_Make_Channel_Access_Reach_Multiple_Soft_IOCs_on_a_Linux_Host

P.S.: For some reason, I had to manually set the "$addr" and "$bcast" variables, they were not working for me.

Best Regards,
Abdalla.

-----Original Message-----
From: Tech-talk [mailto:tech-talk-bounces@aps.anl.gov] On Behalf Of Randall Cayford via Tech-talk
Sent: Tuesday, December 21, 2021 9:34 AM
To: Gofron, Kazimierz via Tech-talk <tech-talk@aps.anl.gov>
Subject: Multiple IOCs on a remote server

I’ve run into a problem I don’t understand.  I’m running 2 IOCs on a machine in a different subnet.   I can access the PVs by adding the remote machine’s IP address to my CA_ADDRESS_LIST.  However I can only access the PVs from one of the IOCs - the IOC that I start second.  Whichever IOC I start second. PVs from both are accessible from machines on the same subnet at the same time but only one set of PVs is accessible remotely.  If I restart the first IOC then it becomes the accessible one and the other becomes inaccessible.

I’ve tried setting up a cagateway on the remote machine and the behavior is the same.   Is there some trick to running multiple IOCs on a machine without which only one will respond to remote requests?

Randall
LBNL

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Jeong Han Lee, Dr.rer.nat

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