事件：'setup'

🌐 Event: 'setup'

• settings <Object>

每次调用 .setupPrimary() 时都会触发。

🌐 Emitted every time .setupPrimary() is called.

settings 对象是调用 .setupPrimary() 时的 cluster.settings 对象，仅供参考，因为在一个时钟周期内可以多次调用 .setupPrimary()。

🌐 The settings object is the cluster.settings object at the time .setupPrimary() was called and is advisory only, since multiple calls to .setupPrimary() can be made in a single tick.

如果准确性很重要，请使用 cluster.settings。

🌐 If accuracy is important, use cluster.settings.