SpringCloud Hoxton SR8, a set of systems the next day, not to say proficient, at least their own complete build

Access using the unified gateway

Introduction to the

Routing is an integral part of the microservices architecture. For example, / might be mapped to your Web application, / API/Users is mapped to user services, and/API/shop is mapped to shop services. Zuul is a JVM-based router and server-side load balancer provided by Netflix. Here is how to use Zuul. GateWay’s in Alibaba.

Netflix uses Zuul for the following purposes:

authentication
insights
Pressure test
Grayscale release test
Dynamic routing
Service migration
lightening
security
Static response processing
Active/Active traffic management

Creating a Routing Gateway

The pom. XML configuration file is as follows


      
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <parent>
        <groupId>com.wujie</groupId>
        <artifactId>hello-spring-cloud-dependencies</artifactId>
        <version>0.0.1 - the SNAPSHOT</version>
        <relativePath>../pom.xml</relativePath>
    </parent>
    <groupId>com.wujie</groupId>
    <artifactId>hello-spring-cloud-zuul</artifactId>
    <version>0.0.1 - the SNAPSHOT</version>
    <name>hello-spring-cloud-zuul</name>
    <description>Creating a Routing Gateway</description>



    <dependencies>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-zuul</artifactId>
            <version>2.2.5. RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
            <version>2.2.5. RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
            <exclusions>
                <exclusion>
                    <groupId>org.junit.vintage</groupId>
                    <artifactId>junit-vintage-engine</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
    </dependencies>




    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.8.1</version>
                <configuration>
                    <source>1.8</source>
                    <target>1.8</target>
                    <encoding>UTF-8</encoding>
                </configuration>
            </plugin>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <version>2.3.0. RELEASE</version>
                <configuration>
                    <mainClass>com.wujie.hello.spring.cloud.zuul.HelloSpringCloudZuulApplication</mainClass>
                </configuration>
                <executions>
                    <execution>
                        <id>repackage</id>
                        <goals>
                            <goal>repackage</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>
        </plugins>
    </build>

</project>
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application.yml

spring:
  application:
    name: hello-spring-cloud-zuul


server:
  port: 8766
eureka:
  client:
    serviceUrl:
      defaultZone: http://localhost:8761/eureka/
zuul:
  routes:
    ribbon:
      path: /ribbon/**
      serviceId: HELLO-SPRING-CLOUD-WEB-ADMIN-RIBBON
      stripPrefix: true
    fegin:
      path: /fegin/**
      serviceId: HELLO-SPRING-CLOUD-WEB-ADMIN-FEGIN
      stripPrefix: true
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Annotate @enableZuulProxy on the startup class and start it

@SpringBootApplication
@EnableZuulProxy
public class HelloSpringCloudZuulApplication {

    public static void main(String[] args) { SpringApplication.run(HelloSpringCloudZuulApplication.class, args); }}Copy the code

Separate access: Changes have been made to fegin and the Ribbon and admin return simplifications to display ports so that we can clearly see the forwarding success

http://localhost:8766/ribbon/hi?message=helloCloud

http://localhost:8766/fegin/hi?message=helloCloud

Callback when configuring gateway routing fails

When fusing a given route in Zuul, you can provide a fallback response by creating a bean of type FallbackProvider. In this bean, you need to specify the route ID for the fallback and provide the ClientHttpResponse as the fallback return. The following example shows a relatively simple FallbackProvider implementation:

@Component
public class WebAdminRoutesFallbackProvider implements FallbackProvider {
    @Override
    public String getRoute(a) {
        // ServiceId. Return "*" or return null if rollback is required for all calls
// return "HELLO-SPRING-CLOUD-WEB-ADMIN-FEGIN";
        return null;
    }

    @Override
    public ClientHttpResponse fallbackResponse(String route, final Throwable cause) {
        if (cause instanceof HystrixTimeoutException) {
            return response(HttpStatus.GATEWAY_TIMEOUT);
        } else {
            returnresponse(HttpStatus.INTERNAL_SERVER_ERROR); }}private ClientHttpResponse response(final HttpStatus status) {
        return new ClientHttpResponse() {
            /** * The gateway failed to make a request to the API service, but the consumer client made a successful request to the gateway@return
             * @throws IOException
             */
            @Override
            public HttpStatus getStatusCode(a) throws IOException {
                return status;
            }

            @Override
            public int getRawStatusCode(a) throws IOException {
                return status.value();
            }

            @Override
            public String getStatusText(a) throws IOException {
                return status.getReasonPhrase();
            }

            @Override
            public void close(a) {}@Override
            public InputStream getBody(a) throws IOException {
                ObjectMapper objectMapper = new ObjectMapper();
                Map<String, Object> map = new HashMap<>();
                map.put("status".200);
                map.put("message"."Unable to connect. Please check your network.");
                return new ByteArrayInputStream(objectMapper.writeValueAsString(map).getBytes("UTF-8"));
            }

            @Override
            public HttpHeaders getHeaders(a) {
                HttpHeaders headers = new HttpHeaders();
                // Same as the content encoding in getBody
                headers.setContentType(MediaType.APPLICATION_JSON);
                returnheaders; }}; }}Copy the code

If you want to provide a default fallback for all routes, you can create a Bean of type FallbackProvider and have the getRoute method return * or NULL.

You can define a gateway route filter

@Component
public class LoginFilter extends ZuulFilter {
    private static final Logger logger = LoggerFactory.getLogger(LoginFilter.class);
    Pre: before the route * 2. Routing: before the route * 3. Post: after the route * 4. Error: sends error calls *@return* /
    @Override
    public String filterType(a) {
        return "pre";
    }
    /** * Configure the filtering order *@return* /
    @Override
    public int filterOrder(a) {
        return 0;
    }
    /** * Whether the configuration requires filtering: true/ yes, false/ no *@return* /
    @Override
    public boolean shouldFilter(a) {
        return true;
    }
    /** * The business code for the filter *@return
     * @throws ZuulException
     */
    @Override
    public Object run(a) throws ZuulException {
        RequestContext context = RequestContext.getCurrentContext();
        HttpServletRequest request = context.getRequest();
        String auth = request.getHeader("auth");
        logger.info("{} > > > {}", request.getMethod(), request.getRequestURL().toString());
        if(! StringUtils.isNotBlank(auth)) { logger.warn("Permission authentication failed");
            context.setSendZuulResponse(false);
            context.setResponseStatusCode(401);
            context.getResponse().setCharacterEncoding("UTF-8");
            context.getResponse().setContentType("text/html; cahrset=UTF-8");
            try {
                context.getResponse().getWriter().write("Permission authentication failed");
            } catch (IOException e) {
            }
        } else {
            logger.info("OK");
        }
        return null; }}Copy the code

Note: when the Chinese prompt is returned, it needs to be added
context.getResponse().setCharacterEncoding("UTF-8"); context.getResponse().setContentType("text/html; cahrset=UTF-8");Copy the code
Otherwise, Chinese garbled characters will appear

With the customization done, we restart the project

First visit without header information: http://localhost:8766/ribbon/hi? Message =helloCloud prompts permission authentication failure

The second add header information visit: http://localhost:8766/ribbon/hi? Message =helloCloud returns the correct result information

Configuration center

Introduction to the

Spring Cloud Config provides server-side and client-side support for externalized configuration in distributed systems. With Config Server, you can manage the external properties of applications in all environments from a central location. The concepts on the client and server are exactly the same as the Spring Environment and PropertySource abstractions, so they are well suited to Spring applications, but can be used with any application running in any language. As applications move through the entire deployment pipeline from developer to tester to production, you can manage the configuration between these environments and ensure that applications have everything they need to migrate. The default implementation of the server storage back uses Git, so it can easily support configuring tagged versions of the environment and managing content through various tools to access it. It is easy to add an alternative implementation and plug it into a Spring configuration.

Create a configuration center server

The pom. XML configuration file is as follows


      
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <parent>
        <groupId>com.wujie</groupId>
        <artifactId>hello-spring-cloud-dependencies</artifactId>
        <version>0.0.1 - the SNAPSHOT</version>
        <relativePath>../pom.xml</relativePath>
    </parent>
    <groupId>com.wujie</groupId>
    <artifactId>hello-spring-cloud-config</artifactId>
    <version>0.0.1 - the SNAPSHOT</version>
    <name>hello-spring-cloud-config</name>
    <description>Create a profile center</description>
    <dependencies>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-config-server</artifactId>
            <version>2.2.5. RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
            <version>2.2.5. RELEASE</version>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
            <exclusions>
                <exclusion>
                    <groupId>org.junit.vintage</groupId>
                    <artifactId>junit-vintage-engine</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.8.1</version>
                <configuration>
                    <source>1.8</source>
                    <target>1.8</target>
                    <encoding>UTF-8</encoding>
                </configuration>
            </plugin>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <version>2.3.0. RELEASE</version>
                <configuration>
                    <mainClass>com.wujie.hello.spring.cloud.config.HelloSpringCloudConfigApplication</mainClass>
                </configuration>
                <executions>
                    <execution>
                        <id>repackage</id>
                        <goals>
                            <goal>repackage</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>
        </plugins>
    </build>

</project>
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application.yml

spring:
  application:
    name: hello-spring-cloud-config
  cloud:
    config:
      server:
        git:
          uri: https://gitee.com/wujiele/respo.git
          search-paths:  reps
          username:
          password:


server:
  port: 8888
eureka:
  client:
    serviceUrl:
      defaultZone: http://localhost:8761/eureka/
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The configuration description is as follows:

spring.cloud.config.label: Configures branches of the repository
spring.cloud.config.server.git.uriGit repository: GitHub, GitLab, code cloud…
spring.cloud.config.server.git.search-paths: Configuration repository path (directory where configuration files are stored)
spring.cloud.config.server.git.username: Account used to access the Git repository
spring.cloud.config.server.git.password: Password to access the Git repository

Matters needing attention:

If WE use GitLab as a warehouse,git.uriYou need to add it at the end.git, GitHub does not

Enable the configuration center service by annotating @enableconFigServer on the startup class

@SpringBootApplication
@EnableConfigServer
public class HelloSpringCloudConfigApplication {

    public static void main(String[] args) { SpringApplication.run(HelloSpringCloudConfigApplication.class, args); }}Copy the code

Start the project visit: http://localhost:8888/config-client/dev/master the following figure:

Attached: HTTP request address and resource file mapping

http://ip:port/{application}/{profile}[/{label}]
http://ip:port/{application}-{profile}.yml
http://ip:port/{label}/{application}-{profile}.yml
http://ip:port/{application}-{profile}.properties
http://ip:port/{label}/{application}-{profile}.properties

Create a configuration center client

The pom. XML configuration file is as follows


      
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <parent>
        <groupId>com.wujie</groupId>
        <artifactId>hello-spring-cloud-dependencies</artifactId>
        <version>0.0.1 - the SNAPSHOT</version>
        <relativePath>../pom.xml</relativePath>
    </parent>
    <groupId>com.wujie</groupId>
    <artifactId>hello-spring-cloud-config-client</artifactId>
    <version>0.0.1 - the SNAPSHOT</version>
    <name>hello-spring-cloud-config-client</name>
    <description>Create a profile client</description>
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-config</artifactId>
            <version>2.2.5. RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
            <version>2.2.5. RELEASE</version>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
            <exclusions>
                <exclusion>
                    <groupId>org.junit.vintage</groupId>
                    <artifactId>junit-vintage-engine</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.8.1</version>
                <configuration>
                    <source>1.8</source>
                    <target>1.8</target>
                    <encoding>UTF-8</encoding>
                </configuration>
            </plugin>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <version>2.3.0. RELEASE</version>
                <configuration>
                    <mainClass>com.wujie.hello.spring.cloud.config.client.HelloSpringCloudConfigClientApplication</mainClass>
                </configuration>
                <executions>
                    <execution>
                        <id>repackage</id>
                        <goals>
                            <goal>repackage</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>
        </plugins>
    </build>

</project>
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application.yml

spring:
  application:
    name: hello-spring-cloud-config-client
  cloud:
    config:
      uri: http://localhost:8888
      name: config-client
      label: master
      profile: dev

server:
  port: 8889

eureka:
  client:
    serviceUrl:
      defaultZone: http://localhost:8761/eureka/
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The configuration description is as follows:

Spring.cloud.config. uri: indicates the url of the configuration service center
Spring.cloud.config. name: prefix of the configuration file name
Spring. Cloud. Config. Label: configuration branch warehouse
```
spring.cloud.config.profile
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```
: Environment identifier of the configuration file
- Dev: indicates the development environment
- Test: indicates the test environment
- Prod: indicates the production environment

Note: The default port for the server is 8888. If the default port is changed, the client project cannot configure spring.cloud.config.uri in application.yml or application.properties. Yml or bootstrap.properties must be configured because the configuration file starting with bootstrap will be loaded and configured first

Create the TestController test class

@RestController
public class TestController {
    @Value("${wujie}")
    private String name;

    @RequestMapping(value = "/hi", method = RequestMethod.GET)
    public String hi(a) {
        returnname; }}Copy the code

Add the @enableDiscoveryClient annotation to the startup class to start the service

After the startup is complete, you will see that our port number is different from the one in the configuration file, because I reconfigured the port number remotely

Use the new port number to access http://localhost:7010/hi

If the value is the same as the remote configuration, the configuration is successful.

Service link tracing

Introduction to the

Spring Cloud Sleuth implements a distributed tracing solution for Spring Cloud.

Spring Cloud Sleuth implements a distributed tracking solution for Spring Cloud.

The term

Spring Cloud Sleuth borrows Dapper’s terminology.

Spring Cloud Sleuth borrowed Dapper’s terminology.

Span: The basic unit of work. For example, sending an RPC is a new span, as is sending a response to an RPC. Spans are identified by a unique 64-bit ID for the span and another 64-bit ID for the trace the span is a part of. Spans also have other data, such as descriptions, timestamped events, key-value annotations (tags), the ID of the span that caused them, and process IDs (normally IP addresses).

Span: The basic unit of work. For example, sending an RPC is the new span, just like sending a response to an RPC. The span is identified by the span’s unique 64-bit ID and another 64-bit ID of the trace to which the span belongs. The span also has other data, such as descriptions, time-stamped events, key-value annotations (labels), the span ID and process ID (usually IP address) that caused the span

Trace: A set of spans forming a tree-like structure. For example, if you run a distributed big-data store, a trace might be formed by a PUT request.

**Trace:** A set of spans that form a tree structure. For example, if you are running a distributed big data store, the trace may be formed by PUT requests.

Annotation: Used to record the existence of an event in time. With Brave instrumentation, we no longer need to set special events for Zipkin to understand who the client and server are, where the request started, and where it ended. For learning purposes, however, we mark these events to highlight what kind of an action took place.

cs: Client Sent. The client has made a request. This annotation indicates the start of the span.
sr: Server Received: The server side got the request and started processing it. Subtracting the cs timestamp from this timestamp reveals the network latency.
ss: Server Sent. Annotated upon completion of request processing (when the response got sent back to the client). Subtracting the sr timestamp from this timestamp reveals the time needed by the server side to process the request.
cr: Client Received. Signifies the end of the span. The client has successfully received the response from the server side. Subtracting the cs timestamp from this timestamp reveals the whole time needed by the client to receive the response from the server.

**Annotation:** Used to record the presence of events in a timely manner. With the Brave tool, we no longer need to set special events for Zipkin to know who the client and server are, where the request starts, and where it ends. However, for learning purposes, we flag these events to highlight what kind of action occurred.

Cs: sent by the client. The client made a request. This comment indicates the beginning of the span.
Sr: Received server: The server side receives the request and begins processing it. Subtracting the CS timestamp from this timestamp reveals the network delay.
Ss: The server has sent the packet. Annotations are added when the request processing is complete (when the response is sent back to the client). Subtracting the SR timestamp from this timestamp shows how long it took the server side to process the request.
Cr: Customer received. Indicates the end of the span. The client has successfully received the response from the server. Subtracting the CS timestamp from this timestamp shows the total time required for the client to receive the response from the server.

Zipkin profile

ZipKin is an open source distributed tracking system, open sourced by Twitter, that collects timed data from services to address latency issues in microservices architecture, including data collection, storage, lookup, and presentation. Its theoretical model comes from The Google Dapper paper.

Each service reports timing data to ZipKin, and ZipKin generates a dependency graph through ZipKin UI based on the invocation relationship, showing how many tracking requests pass through each service. The system allows developers to easily collect and analyze data through a Web front end, such as the processing time of each service request. Easy monitoring of bottlenecks in the system.

Graphically annotate Span and Trace using Zipkin annotations in one system:

! [Zipkin annotation process] (wujiele. Gitee. IO/image/Zipki… Annotation process. PNG)

Create the ZipKin server

Zipkin runs in three ways: Java, Docker, and source code compilation. Here I directly use the Java way, interested in you can go to the official website to check other ways:

After SpringBoot 2.0, you do not need to build Zipkin-Server by yourself. Instead, you directly use the compiled JAR package provided by the official, and run the following command to download and start Zipkin-Server at the terminal:

curl -sSL https://zipkin.io/quickstart.sh | bash -s
java -jar zipkin.jar
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After running with the Java command, you can visit http://localhost:9411 to view the interface

Add dependencies to the project you want to track, and add configurations to the configuration file

<dependency>
    <groupId>org.springframework.cloud</groupId>
    <artifactId>spring-cloud-starter-zipkin</artifactId>
    <version>2.2.5. RELEASE</version>
</dependency>
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zipkin:
  base-url: http://localhost:9411
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Then restart the project, test the interface you wrote earlier, and you can view it in Zipkin

This indicates that zipkin configuration is successful.

The monitoring system

Introduction to the

As the development cycle progresses, the project grows larger and more services are shelled out, making the microservices a complex system. It becomes a challenge to collect metrics such as health, number of sessions, number of concurrent sessions, service resources, and latency for each microservice system. Spring Boot Admin emerged at the historic moment, it formally developed a powerful monitoring and management system based on these requirements.

Spring Boot Admin provides the following features for registered applications:

Show health status
Show details, like
- JVM & memory metrics
- micrometer.io metrics
- Datasource metrics
- Cache metrics
Show build-info number
Follow and download logfile
View jvm system- & environment-properties
View Spring Boot Configuration Properties
Support for Spring Cloud’s postable /env- &/refresh-endpoint
Easy loglevel management
Interact with JMX-beans
View thread dump
View http-traces
View auditevents
View http-endpoints
View scheduled tasks
View and delete active sessions (using spring-session)
View Flyway / Liquibase database migrations
Download heapdump
Notification on status change (via e-mail, Slack, Hipchat, …)
Event journal of status changes (non persistent)

Spring Boot Admin provides the following capabilities for registered applications:

Show health
Displays detailed information, for example
- JVM and memory metrics
- Micrometer. IO indicators
- Data source index
- Cache indicators
Display the build information number
Watch and download log files
View JVM system and environment properties
View Spring Boot configuration properties
Support for Spring Cloud publishable/env-&/ refresh-endpoint
Easy log level management
Interact with JMX – beans
Viewing thread garbage
Viewing HTTP Traces
View audit events
Viewing HTTP endpoints
Viewing scheduled Tasks
View and Delete active sessions (using spring-Session)
Check out the Flyway/Liquibase database migration
Download heap memory
Notification of status changes (via email, Slack, Hipchat, etc.)
Event logs of state changes (non-persistent)

Spring Boot Admin consists of two roles, one is the Spring Boot Admin Server, one is the Spring Boot Admin Client. This chapter will guide you to implement the Spring Boot Admin setup.

Spring Boot Admin server

The pom. XML configuration file is as follows


      
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <parent>
        <groupId>com.wujie</groupId>
        <artifactId>hello-spring-cloud-dependencies</artifactId>
        <version>0.0.1 - the SNAPSHOT</version>
        <relativePath>../pom.xml</relativePath>
    </parent>
    <groupId>com.wujie</groupId>
    <artifactId>hello-spring-cloud-admin</artifactId>
    <version>0.0.1 - the SNAPSHOT</version>
    <name>hello-spring-cloud-admin</name>
    <description>SpringBootAdmin server</description>



    <dependencies>
        <dependency>
            <groupId>de.codecentric</groupId>
            <artifactId>spring-boot-admin-starter-server</artifactId>
            <version>2.3.0</version>
        </dependency>
        <! -- Spring Cloud Begin -->
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-zipkin</artifactId>
            <version>2.2.5. RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-eureka-server</artifactId>
            <version>2.2.5. RELEASE</version>
        </dependency>
        <! -- Spring Cloud End -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
            <exclusions>
                <exclusion>
                    <groupId>org.junit.vintage</groupId>
                    <artifactId>junit-vintage-engine</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.8.1</version>
                <configuration>
                    <source>1.8</source>
                    <target>1.8</target>
                    <encoding>UTF-8</encoding>
                </configuration>
            </plugin>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <version>2.3.0. RELEASE</version>
                <configuration>
                    <mainClass>com.wujie.hello.spring.cloud.admin.HelloSpringCloudAdminApplication</mainClass>
                </configuration>
                <executions>
                    <execution>
                        <id>repackage</id>
                        <goals>
                            <goal>repackage</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>
        </plugins>
    </build>

</project>
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application.yml

spring:
  application:
    name: hello-spring-cloud-admin
  zipkin:
    base-url: http://localhost:9411
server:
  port: 8767
eureka:
  client:
    serviceUrl:
      defaultZone: http://localhost:8761/eureka/
Copy the code

Annotate the @enableadMinServer on the startup class and start

@SpringBootApplication
@EnableAdminServer
public class HelloSpringCloudAdminApplication {

    public static void main(String[] args) { SpringApplication.run(HelloSpringCloudAdminApplication.class, args); }}Copy the code

Visit http://localhost:8767 and you can see the picture

SpringBootAdmin client

The pom. XML configuration file is as follows


      
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <parent>
        <groupId>com.wujie</groupId>
        <artifactId>hello-spring-cloud-dependencies</artifactId>
        <version>0.0.1 - the SNAPSHOT</version>
        <relativePath>../pom.xml</relativePath>
    </parent>
    <groupId>com.wujie</groupId>
    <artifactId>hello-spring-cloud-admin-client</artifactId>
    <version>0.0.1 - the SNAPSHOT</version>
    <name>hello-spring-cloud-admin-client</name>
    <description>Spring Boot Admin client</description>


    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>de.codecentric</groupId>
            <artifactId>spring-boot-admin-starter-client</artifactId>
            <version>2.3.0</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
            <version>2.2.5. RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-zipkin</artifactId>
            <version>2.2.5. RELEASE</version>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
            <exclusions>
                <exclusion>
                    <groupId>org.junit.vintage</groupId>
                    <artifactId>junit-vintage-engine</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.8.1</version>
                <configuration>
                    <source>1.8</source>
                    <target>1.8</target>
                    <encoding>UTF-8</encoding>
                </configuration>
            </plugin>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <version>2.3.0. RELEASE</version>
                <configuration>
                    <mainClass>com.wujie.hello.spring.cloud.admin.client.HelloSpringCloudAdminClientApplication
                    </mainClass>
                </configuration>
                <executions>
                    <execution>
                        <id>repackage</id>
                        <goals>
                            <goal>repackage</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>
        </plugins>
    </build>

</project>
Copy the code

application.yml

spring:
  application:
    name: hello-spring-cloud-admin-client
  boot:
    admin:
      client:
        url: http://localhost:8767
  zipkin:
    base-url: http://localhost:9411

server:
  port: 8768

eureka:
  client:
    serviceUrl:
      defaultZone: http://localhost:8761/eureka/
management:
  endpoints:
    web:
      exposure:
        include: The '*'
  endpoint:
    health:
      show-details: ALWAYS
Copy the code

Note:

management: endpoints: web: exposure: include: ‘*’ endpoint: health: show-details: ALWAYS

This is configured on the client to display information. A lot of the Internet is put on the server, the result of access to no information like this picture

This is what it looks like if it’s configured correctly

At this point, the configuration is successful.

tips

Whether for micro service or some other technology, we can only hold a modest attitude to learn, explore knowledge to get what you want, also don’t be afraid of English literature, whether in baidu or Google up search is always secondary third even N hand data, the official is the latest first-hand information, There are even various versions, but most of them are In English. At this time, we cannot be afraid to learn. There are so many online translation software that we first try to read and then use translation software to translate. The advantage of doing this is that we can further improve our English level, and we can remember the document at least three times (try to translate by ourselves first, use translation software to translate, and take notes), and also deepen our understanding of this technology.

The ancients said that reviewing the old and knowing the new can be a teacher

mo4tech.com (Moment For Technology) is a global community with thousands techies from across the global hang out!Passionate technologists, be it gadget freaks, tech enthusiasts, coders, technopreneurs, or CIOs, you would find them all here.

SpringCloud Hoxton SR8, a set of systems the next day, not to say proficient, at least their own complete build

Access using the unified gateway

Introduction to the

Creating a Routing Gateway

The pom. XML configuration file is as follows

application.yml

Callback when configuring gateway routing fails

You can define a gateway route filter

Configuration center

Introduction to the

Create a configuration center server

The pom. XML configuration file is as follows

application.yml

Attached: HTTP request address and resource file mapping

Create a configuration center client

The pom. XML configuration file is as follows

application.yml

Create the TestController test class

Service link tracing

Introduction to the

The term

Zipkin profile

Create the ZipKin server

The monitoring system

Introduction to the

Spring Boot Admin server

The pom. XML configuration file is as follows

application.yml

SpringBootAdmin client

The pom. XML configuration file is as follows

application.yml

tips

The resources

SpringCloud Hoxton SR8, a set of systems the next day, not to say proficient, at least their own complete build

Access using the unified gateway

Introduction to the

Creating a Routing Gateway

The pom. XML configuration file is as follows

application.yml

Callback when configuring gateway routing fails

You can define a gateway route filter

Configuration center

Introduction to the

Create a configuration center server

The pom. XML configuration file is as follows

application.yml

Attached: HTTP request address and resource file mapping

Create a configuration center client

The pom. XML configuration file is as follows

application.yml

Create the TestController test class

Service link tracing

Introduction to the

The term

Zipkin profile

Create the ZipKin server

The monitoring system

Introduction to the

Spring Boot Admin server

The pom. XML configuration file is as follows

application.yml

SpringBootAdmin client

The pom. XML configuration file is as follows

application.yml

tips

The resources

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