Container can't use the azk DNS

[ReeSilva]

When I try to connect a dependent container to the container that it depends, it can't using the net.host, it fails. If I try with the IP of container it works, and also works with the IP of host.

Reproduce: a. Clone the azkdemo project b. Follow the steps to connect with Redis c. Try restart

Output

Info a. Fedora 23 b. Not using VirtualBox c.

/**
 * Documentation: http://docs.azk.io/Azkfile.js
 */
// Adds the systems that shape your system
systems({
  azkdemo: {
    // Dependent systems
    depends: ["redis"],
    // More images:  http://images.azk.io
    image: {"docker": "azukiapp/node"},
    // Steps to execute before running instances
    provision: [
      "npm install",
    ],
    workdir: "/azk/#{manifest.dir}",
    shell: "/bin/bash",
    command: ["npm", "start"],
    wait: 20,
    mounts: {
      '/azk/#{manifest.dir}': sync("."),
      '/azk/#{manifest.dir}/node_modules': persistent("./node_modules"),
    },
    scalable: {"default": 1},
    http: {
      domains: [ "#{system.name}.#{azk.default_domain}" ]
    },
    ports: {
      // exports global variables
      http: "3000/tcp",
    },
    envs: {
      // Make sure that the PORT value is the same as the one
      // in ports/http below, and that it's also the same
      // if you're setting it in a .env file
      NODE_ENV: "dev",
      PORT: "3000",
    },
  },
  redis: {
    image: {docker: "redis"},
    export_envs: {
      "DATABASE_URL": "redis://#{net.host}:#{net.port[6379]}",
    },
  },
});

[ReeSilva]

Hey guys, nothing about it?

[gullitmiranda]

hi @ReeSilva. this can be a problem with the dns resolver or redis connection.

• redis connection: are you using the env DATABASE_URL in your application?
• dns resolver: run this command:

$ azk agent start
$ dig dev.azk.io

[ReeSilva]

@gullitmiranda Hey guy, thanks for ur answer. Yeah, I'm using the DATABASE_URL, the application that I use to describe the error was the azkdemo application. When I dig both from host and other containers the result is the same. But, when I telnet the port of the redis container (in that run, 32770), it fails on container but works on host (as you can see on the image above)

[gullitmiranda]

so the problem is in dns-resolver. you could send this message in the chat (https://gitter.im/azukiapp/azk) so that we can have an more quickly interaction?

[ReeSilva]

Sure, I'll do that