cluster.setupPrimary([settings])

• settings <Object> 参见 cluster.settings。

  ¥settings <Object> See cluster.settings.

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

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

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。

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

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

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

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

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

import cluster from 'node:cluster';

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

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

这只能从主进程调用。

¥This can only be called from the primary process.