Spring Cloud Gray 采坑记录

实例状态问题

若实例添加为灰度实例，并且Gray Status为CLOSE，Instance Status为DOWN，那么会报：

java.lang.RuntimeException: com.netflix.client.ClientException: Load balancer does not have available server for client

解决方法：将实例的Instance Status为UP，注意状态生效的时长为1min

若需要支持DOWN状态也能正常转发，则gray-server需要配置

gray:
  server:
    instance:
      normalInstanceStatus: STARTING,UP,DOWN

• 正常的实例状态，默认为STARTING, UP
• 实例状态分别是STARTING, UP, OUT_OF_SERVICE, DOWN, UNKNOWN

参考：https://github.com/SpringCloud/spring-cloud-gray/blob/master/doc/guide/gray-server-properties.md