emqx-docker
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Can't get this to work on OpenShift
I'm trying to build this image and make it work on OpenShift, however the problem is that OpenShift runs containers with a special user id (like 100010000) and the user is in root group.
The problem can be locally reproduced with the following command:
docker run --rm -ti --name emqttd -e EMQ_WAIT_TIME=1000 -p 18083:18083 -p 1883:1883 -u 10001000:0 emqttd:latest
I made some changes to the start.sh to solve some problems (Mostly from this guide: OpenShift Guidelines) but seems like emqttd fails to start and there's not even a single log message. All I get is "waiting emqttd" and then it timeouts.
However, if I shell into this container, then I can succesfully run emqttd start and looks like it starts. However, the container still timeouts.
Quite stuck right now.
If anybody is interested in the solution:
Follow this guide: OpenShift Guidelines
Also, more importantly have the following in your Dockerfile:
ENV HOME /opt/emqttd
Looks like Erlang cookie can't be created if $HOME is not available and it fails silently.
Hi,
I am also trying to deploy this image on Openshift but I cant seem to make I work. Could you paste your final Dockerfile here? At least the parts directly related to Openshift.
Thank you so much for your help.
@pablopani2002 You can clone the project to check the Dockerfile and start.sh
@emqplus Hi, I already have the Dockerfile, but it does not work for Openshift. I keep geeting an error:
Node '[email protected]' not responding to pings.
['2018-02-22T07:30:38Z']:waiting emqttd
['2018-02-22T07:30:38Z']:timeout error
It has to do with Openshift not being able to run on root. I have tried with the guidelines @ertanden proposed, but it still gives the same error. Thanks so much for your help
Hi, the error I get is that the directory /opt/emqttd/etc is empty, and the container logs shows continuously:
cat: can't open '/opt/emqttd/etc/emq.conf': No such file or directory
cat: can't open '/opt/emqttd/etc/plugins/*': No such file or directory
