[MESOS-2709] Design Master discovery functionality for HTTP-only clients

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.23.0
• Component/s: java api
• Target Version/s: 0.23.0
• Epic Link: Scheduler API v1
• Sprint: Mesosphere Sprint 10, Mesosphere Sprint 11
• Story Points: 3
• Assignee: Marco Massenzio
• Reporter: Marco Massenzio
• Created: 08/May/15 18:51
• Updated: 02/Jul/15 07:21
• Resolved: 03/Jun/15 19:04

Description

When building clients that do not bind to libmesos and only use the HTTP API (via "pure" language bindings - eg, Java-only) there is no simple way to discover the Master's IP address to connect to.

Rather than relying on 'out-of-band' configuration mechanisms, we would like to enable the ability of interrogating the ZooKeeper ensemble to discover the Master's IP address (and, possibly, other information) to which the HTTP API requests can be addressed to.

Issue Links

• blocks: MESOS-2340 Add ability to decode JSON serialized MasterInfo from ZK
• blocks: MESOS-2298 Provide a Java library for master detection
• blocks: MESOS-2912 Provide a Python library for master detection