moby / moby/swarmkit

Define schema for mapping service resources into DNS

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Description

While there has been discussion in https://github.com/docker/docker/pull/24973 and
https://github.com/docker/swarmkit/issues/192, the adoption of a clear schema for mapping service resources into the DNS space is unclear.

The following presents a schema for mapping cluster-level FQDNs from various components:

Resource Component Structure Examples
Cluster <cluster> <cluster> local, cluster0
Namespace <namespace> <namespace>.<cluster> production.cluster0, development.local, system
Node <node> <node>.<cluster> node0.local
Job <job> <job>.<namespace>.<cluster> job0.production.cluster0
Slot <slot> <slot id>.<job>.<namespace>.<cluster> 1.job0.production.cluster0
Task <task> <task id>.<slot id>.<job>.<namespace>.<cluster> abcdef.1.job0.production.cluster0

@mavenugo @mrjana @aluzzardi

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by reading the linked Docker pull request and SwarmKit issue, then review this issue's discussion and proposed resource hierarchy. There are no files, tests, or entry points named in the payload. Done means reaching agreement on a clear DNS schema for the listed cluster, namespace, node, job, slot, and task resources.

Written by the indexing model from the issue text.

Assessment

Domain
distributed-systems, networking
Issue type
Feature
Difficulty
5/5
Estimated time
Over a week
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
22/100

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