add readme to docker hub page about redpanda

[emaxerrno]

@0x5d ^^ we should add that to the readme of the docker.

@bithavoc thanks for testing this! indeed. /opt/redpanda/data is the data path there.

[loopingrage]

Hey there. I tried using the docker image but can't seem to connect. I see a message in the log related to a missing License Key. Hopefully this will be addressed in the README you're working on since I couldn't find anything else on it online. Also, it would be great if there was a way to run with redpanda.developer_mode: true.

[dotnwat]

hey @loopingrage could you file a separate issue for the connection problem you are facing with some details? i believe the missing license key message is ok, but the connection issue may need to be addressed.

[0x5d]

Working on it: https://hub.docker.com/repository/docker/vectorized/redpanda

[dotnwat]

@0x5d that link requires a login

[bithavoc]

Is there a reason why the docker hub page requires a login to see the image?

[emaxerrno]

@bithavoc no reason. that should be public. probably a setting we forgot to turn on.

[emaxerrno]

@bithavoc - https://hub.docker.com/r/vectorized/redpanda
@loopingrage - also developer_mode:true is now the default too. So probably on Tuesday or so it will start w/ dev mode true. see #215

[emaxerrno]

Working on it: https://hub.docker.com/repository/docker/vectorized/redpanda

this is the edit version. The read version is https://hub.docker.com/r/vectorized/redpanda

[bithavoc]

@senior7515 I checked the rpk source code looking for the data directory to persist the data from the docker image, it'd be great to have this info in the readme of the Dockerhub image.

https://github.com/vectorizedio/redpanda/blob/24d3eaebf5b4d1f421ec00ccf1587243ad6e72ea/src/go/rpk/pkg/cli/cmd/container/common/common.go#L245

In case anyone wonders, it seems to be /opt/redpanda/data for data and /etc/redpanda for config.

[emaxerrno]

we added docs on the dockerhub. though @0x5d should we mention the following config as the most common one there?

rpk:
  overprovisioned: true
  additional_start_flags:
  - --smp=1
  - --memory=2G
  - --default-log-level=info

[0x5d]

I think that config file isn't needed. You can just run docker run -tiP vectorized/redpanda:latest start --smp 1 --memory 2G. I have an open draft PR for the dockerhub docs, I will get to update it as soon as I'm done with the rpk tests.

[bithavoc]

@senior7515 FYI Dockerhub still doesn't refresh, no mention of the data directory there https://hub.docker.com/r/vectorized/redpanda

[bithavoc]

I think that config file isn't needed. You can just run docker run -tiP vectorized/redpanda:latest start --smp 1 --memory 2G. I have an open draft PR for the dockerhub docs, I will get to update it as soon as I'm done with the rpk tests.

Sorry I missed this, I guess the PR hasn't been merged yet.