EMERGENCY! EUREKA MAY BE INCORRECTLY CLAIMING INSTANCES ARE UP WHEN THEY'RE NOT. RENEWALS ARE LESSER THAN THRESHOLD AND HENCE THE INSTANCES ARE NOT BEING EXPIRED JUST TO BE SAFE.

上面报错的问题，其实是个提示，当部署一台eureka时，假如该eureka故障了，就会出现单点故障问题，因此提示我们部署多台eureka就可以实现高可用