cluster.setupMaster([settings])

• settings <Object> 参见 cluster.settings。

setupMaster 用于更改默认的 'fork' 行为。 调用后，设置将出现在 cluster.settings 中。

任何设置更改只会影响未来对 .fork() 的调用，而不会影响已经运行的工作进程。

唯一不能通过 .setupMaster() 设置的工作进程属性是传给 .fork() 的 env。

上述默认值仅适用于第一次调用；以后调用的默认值是调用 cluster.setupMaster() 时的当前值。

const cluster = require('cluster');
cluster.setupMaster({
  exec: 'worker.js',
  args: ['--use', 'https'],
  silent: true
});
cluster.fork(); // https 工作进程
cluster.setupMaster({
  exec: 'worker.js',
  args: ['--use', 'http']
});
cluster.fork(); // http 工作进程

这只能从主进程调用。

• settings <Object> See cluster.settings.

setupMaster is used to change the default 'fork' behavior. Once called, the settings will be present in cluster.settings.

Any settings changes only affect future calls to .fork() and have no effect on workers that are already running.

The only attribute of a worker that cannot be set via .setupMaster() is the env passed to .fork().

The defaults above apply to the first call only; the defaults for later calls are the current values at the time of cluster.setupMaster() is called.

const cluster = require('cluster');
cluster.setupMaster({
  exec: 'worker.js',
  args: ['--use', 'https'],
  silent: true
});
cluster.fork(); // https worker
cluster.setupMaster({
  exec: 'worker.js',
  args: ['--use', 'http']
});
cluster.fork(); // http worker

This can only be called from the master process.