PVA and Docker on Mac

[Juan F. Esteban Müller via Tech-talk <tech-talk at aps.anl.gov>]

Hello all,

 

I am trying to run a PVA client on Docker, but when I run the image on macOS I can’t connect to any IOC, while from Linux it works fine. There are some differences in how the Docker network interface works on Linux and macOS, but I couldn’t find a way to solve this issue.

The issue is limited to PV Access, CA works fine.

 

In case someone wants to reproduce the issue, I am attaching a db file and a Dockerfile and these are the steps:

1. Run the IOC on the host machine: $ softIocPVA -d count.db
2. Build the Docker image: $ docker build -t pvatest .
3. Run the Docker image: $ docker run pvatest

 

On Linux you’ll get something like this:

$ docker run pvatest

../iocinf.cpp: Parsing 'EPICS_CA_ADDR_LIST'

      Bad internet address or host name: 'host.docker.internal'

counter                        89

counter 2022-07-27 09:05:26.714  89 

 

While on macOS this:

% docker run pvatest

counter                        90

counter Timeout

 

The first line from the output is the caget command, the second one is pvget.

 

Best regards,

Juan

Attachment: count.db
Description: count.db

Attachment: Dockerfile
Description: Dockerfile