llnl / llnl/merlin

Worker Watchdog for Monitoring Worker Health

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enhancement Merlin 2.0
Dominant language
Python
Stars
151
Forks
30
PR merge metrics
No merged PRs in 30d

Description

There needs to be a worker watchdog process that will start automatically when the merlin run-workers command is given. This watchdog will monitor the health of workers and restart them if they are dead/stalled when necessary. Can likely use Ryan Lee's work from #489 to influence the work here. The changes from #529 will be helpful for this as well.

After speaking with Luc and Ryan Lee we decided this would be better as a watchdog process rather than baked into the monitor so that users get it automatically when launching workers.

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 at the entry point for the merlin run-workers command and review the work in issues #489 and #529. Determine how workers are launched and monitored, then define completion as an automatically started watchdog that detects dead or stalled workers and restarts them when necessary.

Written by the indexing model from the issue text.

Assessment

Tech stack
python
Domain
backend, distributed-systems
Issue type
Feature
Difficulty
5/5
Estimated time
Over a week
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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