I keep getting error about Selenuim Server not being active

[lullabot]

I keep getting error about Selenuim Server not being active

[juampynr]

Hi @isbkch! Which CI provider are you using?

Containers are usually connected together via ports. That is why port 4444 is used.

[isbkch]

I'm using circleCI

[juampynr]

That's weird. I can only suggest that you restart the job with SSH so you can jump into the environment and debug what's going on.

[deviantintegral]

To answer your question, CircleCI does some magic and makes all exposed ports available on localhost for all containers in a job. So the apache container can access selenium on localhost:4444, and selenium can access apache back on localhost:80.

The only thing I can think of is perhaps a race condition where the selenium server container is slow to start up, but I've never seen that happen in practice.