How do I get a list of worker/process IDs inside a strongloop cluster?

Question

It looks like each process in a Strongloop cluster is considered a worker, and therefore if you use a tool like node-scheduler that schedules jobs and you have multiple workers, the job is executed multiple times.

Ideally I'd be able to do something like:

var cluster = require('cluster');
if (cluster.isMaster) {
 // execute code
}

Since this doesn't seem to be possible, I wonder if there is a way to get a list of all worker or process IDs from inside the node app so that I can do this same sort of thing with one worker? This will need to be something dynamic, as cluster.worker.id does not appear to be a reliable way to do this since the worker IDs are unpredictable.

Ideas?

Answer 1

1. “strongloop cluster”不属于它，它是一个节点集群：https://nodejs.org/dist/latest-v6.x/docs/api/cluster.html

2. 不存在这样的API，它对你没有帮助，你需要实现某种共识算法来选择其中一个（动态，工人可以死掉，更换/重新启动）一组工人作为“单身人士”

3. 将系统编写为微服务，如果需要单例任务运行器，将其作为服务，并以1的簇大小运行它。

4. 这不是一个集群问题，它无法扩展问题，不是吗？群集进行内部扩展，您可以将其限制为一个用于调度服务....但是当您将跨多个VM（多个Heroku dyno，多个docker容器等）进行扩展时，这仍将分崩离析...这将是定时节点计划作业的来源？