spring-cloud-k8s fegin
2020-07-25 本文已影响0人
与诗小睡
服务提供者: pom.xml
<?xml version="1.0" encoding="UTF-8"?>
<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>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.3.2.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.example.demo</groupId>
<artifactId>provider</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>provider</name>
<description>Demo project for Spring Boot</description>
<properties>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<scope>runtime</scope>
<optional>true</optional>
</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.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
<plugin>
<groupId>io.fabric8</groupId>
<artifactId>fabric8-maven-plugin</artifactId>
<version>4.0.0</version>
<executions>
<execution>
<goals>
<goal>resource</goal>
<goal>build</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
</build>
</project>
提供者启动类:
package com.example.demo.provider;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
@SpringBootApplication
public class ProviderApplication {
public static void main(String[] args) {
SpringApplication.run(ProviderApplication.class, args);
}
}
提供者控制器:
package com.example.demo.provider;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
@RestController
@RequestMapping
public class DemoController {
@GetMapping("hello")
public String hello() {
return "hello k8s";
}
}
消费方接口:
package com.example.demo.consuner;
import org.springframework.cloud.openfeign.FeignClient;
import org.springframework.web.bind.annotation.RequestMapping;
@FeignClient(name = "http://provider:8080")
public interface DemoInterface {
@RequestMapping("/hello")
String services();
}
消费方控制器
package com.example.demo.consuner;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.cloud.client.discovery.DiscoveryClient;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
@RestController
@RequestMapping
public class DemoController {
@Autowired
private DiscoveryClient dc;
@Autowired
private DemoInterface di;
@GetMapping("services")
public String getServices() {
return dc.getServices().toString();
}
@GetMapping("api")
public String getApi() {
return di.services();
}
}
消费方启动类:
package com.example.demo.consuner;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
import org.springframework.cloud.openfeign.EnableFeignClients;
@SpringBootApplication
@EnableDiscoveryClient
@EnableFeignClients
public class ConsunerApplication {
public static void main(String[] args) {
SpringApplication.run(ConsunerApplication.class, args);
}
}
消费方法pom,xml
<?xml version="1.0" encoding="UTF-8"?>
<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>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.3.3.BUILD-SNAPSHOT</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.example.demo</groupId>
<artifactId>consuner</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>consuner</name>
<description>Demo project for Spring Boot</description>
<properties>
<java.version>1.8</java.version>
</properties>
<dependencies>
<!-- https://mvnrepository.com/artifact/org.springframework.cloud/spring-cloud-starter-kubernetes -->
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-kubernetes</artifactId>
<version>1.1.4.RELEASE</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.springframework.cloud/spring-cloud-starter-kubernetes-ribbon -->
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-kubernetes-ribbon</artifactId>
<version>1.1.4.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-commons</artifactId>
<version>2.2.3.RELEASE</version>
</dependency>
<dependency>
<artifactId>spring-cloud-starter-netflix-hystrix</artifactId>
<groupId>org.springframework.cloud</groupId>
<version>2.2.3.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-openfeign</artifactId>
<version>2.2.3.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<scope>runtime</scope>
<optional>true</optional>
</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>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>Hoxton.BUILD-SNAPSHOT</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
<configuration>
<excludeDevtools>false</excludeDevtools>
</configuration>
</plugin>
<plugin>
<groupId>io.fabric8</groupId>
<artifactId>fabric8-maven-plugin</artifactId>
<version>4.0.0</version>
<executions>
<execution>
<goals>
<goal>resource</goal>
<goal>build</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
</build>
<repositories>
<repository>
<id>spring-milestones</id>
<name>Spring Milestones</name>
<url>https://repo.spring.io/milestone</url>
</repository>
<repository>
<id>spring-snapshots</id>
<name>Spring Snapshots</name>
<url>https://repo.spring.io/snapshot</url>
<snapshots>
<enabled>true</enabled>
</snapshots>
</repository>
</repositories>
<pluginRepositories>
<pluginRepository>
<id>spring-milestones</id>
<name>Spring Milestones</name>
<url>https://repo.spring.io/milestone</url>
</pluginRepository>
<pluginRepository>
<id>spring-snapshots</id>
<name>Spring Snapshots</name>
<url>https://repo.spring.io/snapshot</url>
<snapshots>
<enabled>true</enabled>
</snapshots>
</pluginRepository>
</pluginRepositories>
</project>
一键部署k8s应用采用fabric8-maven-plugin插件
提示:
由于k8s的RBAC权限的控制关系,要想实现请求成功,还需要配置角色绑定,此处为图方便,绑定在default命名空间中的default sa上
默认的sa:
kubectl get sa -o yaml
apiVersion: v1
items:
- apiVersion: v1
kind: ServiceAccount
metadata:
creationTimestamp: "2020-06-26T09:20:24Z"
name: default
namespace: default
resourceVersion: "401"
selfLink: /api/v1/namespaces/default/serviceaccounts/default
uid: 430be5ca-d724-4e75-82c3-b6039984d3eb
secrets:
- name: default-token-hxg7p
kind: List
metadata:
resourceVersion: ""
selfLink: ""
[root@master ~]#
role:
[root@slave ~]# kubectl get Role -o yaml
apiVersion: v1
items:
- apiVersion: rbac.authorization.k8s.io/v1
kind: Role
metadata:
annotations:
kubectl.kubernetes.io/last-applied-configuration: |
{"apiVersion":"rbac.authorization.k8s.io/v1","kind":"Role","metadata":{"annotations":{},"creationTimestamp":null,"name":"defaultRole","namespace":"default"},"rules":[{"apiGroups":[""],"resources":["services"],"verbs":["get","list","watch"]}]}
creationTimestamp: "2020-07-25T06:59:21Z"
name: defaultRole
namespace: default
resourceVersion: "219646"
selfLink: /apis/rbac.authorization.k8s.io/v1/namespaces/default/roles/defaultRole
uid: d23a5d72-f61a-4434-9f60-d111dfc03b5a
rules:
- apiGroups:
- ""
resources:
- services
- pods
- endpoints
verbs:
- get
- list
- watch
kind: List
metadata:
resourceVersion: ""
selfLink: ""
[root@slave ~]#
rolebinding:
[root@slave ~]# kubectl get rolebinding -o yaml
apiVersion: v1
items:
- apiVersion: rbac.authorization.k8s.io/v1
kind: RoleBinding
metadata:
annotations:
kubectl.kubernetes.io/last-applied-configuration: |
{"apiVersion":"rbac.authorization.k8s.io/v1","kind":"RoleBinding","metadata":{"annotations":{},"creationTimestamp":null,"name":"defaultRoleBinding","namespace":"default"},"roleRef":{"apiGroup":"rbac.authorization.k8s.io","kind":"Role","name":"defaultRole"},"subjects":[{"kind":"ServiceAccount","name":"default","namespace":"default"}]}
creationTimestamp: "2020-07-25T06:57:25Z"
name: defaultRoleBinding
namespace: default
resourceVersion: "212552"
selfLink: /apis/rbac.authorization.k8s.io/v1/namespaces/default/rolebindings/defaultRoleBinding
uid: 26d3af0c-e780-41ed-9c15-4b7acc33fca6
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: Role
name: defaultRole
subjects:
- kind: ServiceAccount
name: default
namespace: default
kind: List
metadata:
resourceVersion: ""
selfLink: ""
[root@slave ~]#
