1.eureka.instance.instance-id中，会添加instance的信息，之前使用方式为

${spring.application.name}:${spring.cloud.client.ipAddress}:${spring.application.instance_id:${server.port}}

 其中，在eureka中展示IP使用的是属性spring.cloud.client.ipAddress，但是升级到最新版之后，会出现一下错误：

Failed to bind properties under 'eureka.instance.instance-id' 

通过在源码org.springframework.cloud.netflix.eureka.EurekaClientAutoConfiguration中查看知道已经改为了ip-address

    public EurekaInstanceConfigBean eurekaInstanceConfigBean(InetUtils inetUtils, ManagementMetadataProvider managementMetadataProvider) {
        String hostname = this.getProperty("eureka.instance.hostname");
        boolean preferIpAddress = Boolean.parseBoolean(this.getProperty("eureka.instance.prefer-ip-address"));
        String ipAddress = this.getProperty("eureka.instance.ip-address");
        boolean isSecurePortEnabled = Boolean.parseBoolean(this.getProperty("eureka.instance.secure-port-enabled"));
        String serverContextPath = this.env.getProperty("server.context-path", "/");
        int serverPort = Integer.valueOf(this.env.getProperty("server.port", this.env.getProperty("port", "8080")));
        Integer managementPort = (Integer)this.env.getProperty("management.server.port", Integer.class);
        String managementContextPath = this.env.getProperty("management.server.servlet.context-path");
        Integer jmxPort = (Integer)this.env.getProperty("com.sun.management.jmxremote.port", Integer.class);

所以这里就需要改为：spring.cloud.client.ip-address

2.出现如下错误：

Error starting Tomcat context. Exception: org.springframework.beans.factory.BeanCreationException. Message: 
Error creating bean with name 'servletEndpointRegistrar' defined in class path resource [org/springframework/boot/actuate/autoconfigure/endpoint/web/ServletEndpointManagementContextConfiguration.class]: 
Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: 
Failed to instantiate [org.springframework.boot.actuate.endpoint.web.ServletEndpointRegistrar]: 
Factory method 'servletEndpointRegistrar' threw exception; 
nested exception is org.springframework.beans.factory.BeanCreationException: 
Error creating bean with name 'healthEndpoint' defined in class path resource [org/springframework/boot/actuate/autoconfigure/health/HealthEndpointConfiguration.class]: 
Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: 
Failed to instantiate [org.springframework.boot.actuate.health.HealthEndpoint]: 
Factory method 'healthEndpoint' threw exception; 
nested exception is org.springframework.beans.factory.BeanCreationException: 
Error creating bean with name 'org.springframework.boot.actuate.autoconfigure.jdbc.DataSourceHealthIndicatorAutoConfiguration': Bean instantiation via constructor failed; 
nested exception is org.springframework.beans.BeanInstantiationException: 
Failed to instantiate [org.springframework.boot.actuate.autoconfigure.jdbc.DataSourceHealthIndicatorAutoConfiguration$$EnhancerBySpringCGLIB$$de74d880]: 
Constructor threw exception; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'dataSource': 
Post-processing of FactoryBean's singleton object failed; 
nested exception is org.springframework.beans.factory.BeanCreationException: 
Error creating bean with name 'scopedTarget.dataSource' defined in class path resource [org/springframework/boot/autoconfigure/jdbc/DataSourceConfiguration$Hikari.class]: 
Initialization of bean failed; nested exception is org.springframework.beans.factory.BeanCreationException: 
Error creating bean with name 'org.springframework.boot.autoconfigure.jdbc.DataSourceInitializerInvoker': 
Invocation of init method failed; nested exception is org.springframework.beans.factory.BeanCreationException: 
Error creating bean with name 'dataSource': 
Post-processing of FactoryBean's singleton object failed; nested exception is org.springframework.beans.factory.BeanCurrentlyInCreationException: 
Error creating bean with name 'scopedTarget.dataSource': 
Requested bean is currently in creation: Is there an unresolvable circular reference?

The dependencies of some of the beans in the application context form a cycle:

   servletEndpointRegistrar defined in class path resource [org/springframework/boot/actuate/autoconfigure/endpoint/web/ServletEndpointManagementContextConfiguration.class]
      ↓
   healthEndpoint defined in class path resource [org/springframework/boot/actuate/autoconfigure/health/HealthEndpointConfiguration.class]
      ↓
   org.springframework.boot.actuate.autoconfigure.jdbc.DataSourceHealthIndicatorAutoConfiguration
┌─────┐
|  dataSource
↑     ↓
|  scopedTarget.dataSource defined in class path resource [org/springframework/boot/autoconfigure/jdbc/DataSourceConfiguration$Hikari.class]
↑     ↓
|  org.springframework.boot.autoconfigure.jdbc.DataSourceInitializerInvoker
└─────┘

 这里只需要在application.yml中添加如下代码即可：

spring:
  cloud:
    refresh:
      refreshable: none