Using external ZooKeeper instance (in OS other than Linux)

[ivangreene]

If wanting to connect to a local ZooKeeper on 2181 outside of the docker container, we cannot use network: host mode. Here is how I was able to get around this, remove net=host mode and open 9000 on the host machine:

docker run \
  -d -p 9000:9000 \
  --name zoonavigator \
  --restart unless-stopped \
  elkozmon/zoonavigator:latest

And use the connection string docker.for.mac.host.internal:2181 (varies by operating system, see this answer: https://stackoverflow.com/a/43541732/7983959

Wanted to share here in case others experience this issue, it was not straightforward to determine the issue

[elkozmon]

Thanks for sharing this, I will probably link this issue in the docs too.

[solarmosaic-kflorence]

This configuration worked for me when deploying to local Kubernetes with docker stack deploy:

  zookeeper1:
    image: bitnami/zookeeper:latest
    hostname: zookeeper1
    ports:
      - "2181:2181"
    environment:
      ALLOW_ANONYMOUS_LOGIN: "yes"
    volumes:
      - zookeeper1-data:/bitnami/zookeeper
  zoonavigator:
    image: elkozmon/zoonavigator:0.7.1
    ports:
      - "8000:8000"
    environment:
      HTTP_PORT: 8000
      AUTO_CONNECT_CONNECTION_STRING: zookeeper1:2181

volumes:
  zookeeper1-data:

[wolfch-elsevier]

docker.for.mac.host.internal

I read this DNS string is deprecated and is now just host.docker.internal https://forums.docker.com/t/understanding-the-docker-for-mac-localhost-behavior/41921/4

[csaltos]

Or just run it outside Docker with this script ->

wget https://www.dropbox.com/s/zaea4o5cdqlsrk0/zoonavigator-0.1.0.tar.bz2?dl=1 -O zoonavigator-0.1.0.tar.bz2
tar xjf zoonavigator-0.1.0.tar.bz2
zoonavigator-0.1.0/bin/zoonavigator-play \
    '-Dplay.http.secret.key=9z34aAn7k?6Z?iarawMxILR1CTF:G2gf:92lmtabG@5142AB:R5W11l2:N:::Cy@' \
    -Dplay.server.http.port=9001

NOTE: if you want to update to a new version, just follow the build steps at https://zoonavigator.elkozmon.com/en/latest/development.html NOTE2: obviously for security reasons change the secret key to a new random you want

[csaltos]

By the way, thanks for ZooNavigator, it's a great tool !! ;) :) ... and please don't forget to sponsor the author at -> https://www.paypal.me/elkozmon