SpringBoot health monitoring

Actuator Step 1 using the checking and monitoring

1.1 Add coordinates Actuator in the pom file

	<dependency>
          <groupId>org.springframework.boot</groupId>
          <artifactId>spring-boot-starter-actuator</artifactId>
          <version>2.1.6.RELEASE</version>
    </dependency>

1.2 In the global configuration file settings to turn off security restrictions

# 在1.5.x版本中通过management.security.enabled=false来暴露所有端点
management.security.enabled=false
# 在2.x 的springboot中的properties文件格式
management.endpoints.web.exposure.include=*
# 在2.x的springboot版本中的yml格式
# 2.0 yml格式
management:
 endpoints:
  web:
   exposure:
    include: refresh

But spring boot2.0later actuatorin securitythe error A global security auto-configuration is now provided, obsolescence problems, mainly:

• The reason given: In spring boot2.0a future release, actuatorof securitycertain methods has expired, there has been change, but if you do not mind to continue to use it all right (. eclispeWill not prompt, but ideayou will be prompted)

springbootAfter a successful start, directly 127.0.0.1:8080/+以下请求URIto

ID	description	The need for authentication
actuator	Provide a "discovery page" as the other endpoint. Requirements Spring HATEOASin classpaththe path	need
auditevents	Display the current audit events in the application of information	need
autoconfig	Display configuration information and automatically displays all automatically configures the candidates and why they "are not" applied	need
beans	For a complete list of all the applications show a Spring bean	need
configprops	Display all configuration information	need
dump	dump all thread	need
env	Display all environment variables	need
flyway	Shows any Flyway database migrations that have been applied	need
health	Display application health information	Do not need
info	Display information	Do not need
loggers	loggers configure the display and modification application	need
liquibase	Liquibase already display any database application migration	need
metrics	Displays the current "index" Application of information	need
mappings	Show all @RequestMapping the url finishing list.	need
shutdown	Close the application (not enabled by default)	need
trace	View tracking information (default to the last HTTP request 100)	need

2 Use visual monitoring reports Spring Boot Admin

2.1 build server

2.1.1 coordinate the introduction admin

The server is actually a SpringBootproject, the introduction of coordinates admin

<dependency>
<groupId>de.codecentric</groupId>
<artifactId>spring-boot-admin-starter-server</artifactId>
<version>1.5.7</version>
</dependency>

2.1.2 modify the startup class, adding @EnableAdminServer

@SpringBootApplication
@EnableAdminServer
public class SpringbootServerApplication {
	public static void main(String[] args) {
		SpringApplication.run(SpringbootServerApplication.class,args);
	}
}

2.2 build client

In fact, 客户端what we need to monitor the project.

2.2.1 modify the client's file to add dependencies pom

<dependency>
	<groupId>de.codecentric</groupId>
	<artifactId>spring-boot-admin-starter-client</artifactId>
	<!-- 此处的版本号和springboot版本号一致，或者比springboot版本更低也可以 -->
	<version>RELEASE</version>
</dependency>

2.2.2 modify the client's profile application.properteis

2.2.2.1 turn off security restrictions

# 当springboot是1.5.x时使用这个关闭安全限制如下
 management.security.enabled=false
# 当springboot是2.X时，就使用如下
management.endpoints.web.exposure.include=*
# 当springboot是2.X时，使用的yml格式：
management:
 endpoints:
  web:
   exposure:
 # 此处的星号是特殊字符，必须用引号引起来
    include: “*”

2.2.2.2 registration services to springbootadmin

#  http://localhost:9090 表示是 Spring Boot Admin 服务单的 IP 地址以及端口号
spring.boot.admin.client.url=http://localhost:9090

2.2.2.3 let springboot admin ip access by host name

# 必须在客户端配置 boot.admin.client.instance.service-url属性，
# 让Spring Boot Admin服务端可以通过网络获取客户端的数据（否则默认会通过主机名去获取）
spring.boot.admin.client.instance.service-url=127.0.0.1:9090
# prefer-ip是否使用注册的ip地址来取代上述各个url中hostname的值,默认值是false
spring.boot.admin.client.instance.prefer-ip=true

2.3 monitoring information to explain

Error message:
Calling [asyncError()] is not valid for a request with Async state [MUST_DISPATCH]This is no effect, saying that the built-in tomcatproblems, the spring-boot-admin-starternext lower version, 2.1.2和2.1.3may not make applicationthe page refresh out, this time to reduce 2.1.0it