以编程方式从 Eureka Server 中删除已注册的实例

Question

有没有办法在不使用 REST 操作的情况下从 Eureka Server 中删除已注册的实例？包含所有应用程序的数据结构是什么？

（很明显，我想删除他们在Eureka Server中编写代码）。

Answer 1

您需要的功能可通过 InstanceRegistry, which is itself just an extension of the Netflix Eureka classes (PeerAwareInstanceRegistryImpl, and AbstractInstanceRegistry).

具体来说，AbstractInstanceRegistry#cancel(String,String,boolean) 方法应该从注册表中删除应用程序。

此方法的 Javadoc 指出：

/**
 * Cancels the registration of an instance.
 *
 * <p>
 * This is normally invoked by a client when it shuts down informing the
 * server to remove the instance from traffic.
 * </p>
 *
 * @param appName the application name of the application.
 * @param id the unique identifier of the instance.
 * @param isReplication true if this is a replication event from other nodes, false
 *                      otherwise.
 * @return true if the instance was removed from the {@link AbstractInstanceRegistry} successfully, false otherwise.
 */

这就是您从 Eureka 服务器本身实现这一目标的方式。