docker-compose部署eureka服務(wù)端、客戶端的案例代碼
使用場景
使用docker-compose方式部署eureka的服務(wù)端和客戶端,并使用容器ip進(jìn)行通信。
原理是使用docker-compose默認(rèn)在一個(gè)網(wǎng)絡(luò)下,并提供dns下的通過service通信的功能。
該方法也可以用于其它形式的容器內(nèi)部服務(wù)調(diào)用的功能實(shí)現(xiàn)。
服務(wù)端主要代碼
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>2.7.9</version> <relativePath/> <!-- lookup parent from repository --> </parent> <groupId>com.liuyang.sc</groupId> <artifactId>eurekaserver</artifactId> <version>0.0.1-SNAPSHOT</version> <name>eurekaserver</name> <description>Demo project for Spring Boot</description> <properties> <java.version>1.8</java.version> <spring-cloud.version>2021.0.6</spring-cloud.version> </properties> <dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-starter-netflix-eureka-server</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> <scope>test</scope> </dependency> </dependencies> <dependencyManagement> <dependencies> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-dependencies</artifactId> <version>${spring-cloud.version}</version> <type>pom</type> <scope>import</scope> </dependency> </dependencies> </dependencyManagement> <build> <plugins> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> </plugin> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-resources-plugin</artifactId> <version>2.4.3</version> </plugin> </plugins> </build> </project>
application.yml
spring: application: name: eureka-server server: port: 29108 #服務(wù)注冊中心端口號 eureka: instance: hostname: 127.0.0.1 #服務(wù)注冊中心IP地址 client: registerWithEureka: false #是否向服務(wù)注冊中心注冊自己 fetchRegistry: false #是否檢索服務(wù) serviceUrl: #服務(wù)注冊中心的配置內(nèi)容,指定服務(wù)注冊中心的位置 defaultZone: http://${eureka.instance.hostname}:${server.port}/eureka/
main.java
package com.liuyang.sc.eurekaserver; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; import org.springframework.cloud.client.discovery.EnableDiscoveryClient; @EnableEurekaServer @SpringBootApplication public class EurekaserverApplication { public static void main(String[] args) { SpringApplication.run(EurekaserverApplication.class, args); } }
客戶端主要代碼
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>2.7.9</version> <relativePath/> <!-- lookup parent from repository --> </parent> <groupId>com.sc</groupId> <artifactId>gateway-project</artifactId> <version>0.0.1-SNAPSHOT</version> <name>gateway-project</name> <description>Demo project for Spring Boot</description> <properties> <java.version>1.8</java.version> <spring-cloud.version>2021.0.6</spring-cloud.version> </properties> <dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-webflux</artifactId> </dependency> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-starter-gateway</artifactId> </dependency> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> <scope>test</scope> </dependency> <dependency> <groupId>io.projectreactor</groupId> <artifactId>reactor-test</artifactId> <scope>test</scope> </dependency> </dependencies> <dependencyManagement> <dependencies> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-dependencies</artifactId> <version>${spring-cloud.version}</version> <type>pom</type> <scope>import</scope> </dependency> </dependencies> </dependencyManagement> <build> <plugins> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> </plugin> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-resources-plugin</artifactId> <version>2.4.3</version> </plugin> </plugins> </build> </project>
application.yml
spring: application: name: gateway cloud: gateway: discovery: locator: enabled: true server: port: 29107 eureka: client: service-url: defaultZone: http://eurekaserver:29108/eureka/ #此處的eurakaserver為docker-compose.yml中eureka-server工程的容器定義 instance: prefer-ip-address: true # 使用IP注冊,避免容器id:port調(diào)用報(bào)錯(cuò)
main.java
package com.sc.gatewayproject; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; import org.springframework.cloud.client.discovery.EnableDiscoveryClient; import org.springframework.cloud.netflix.eureka.EnableEurekaClient; @EnableEurekaClient @EnableDiscoveryClient @SpringBootApplication public class GatewayProjectApplication { public static void main(String[] args) { SpringApplication.run(GatewayProjectApplication.class, args); } }
粗陋的DockerFile
eurekaserver
FROM java:openjdk-8u111-jdk COPY eurekaserver-0.0.1-SNAPSHOT.jar app.jar EXPOSE 29108 ENTRYPOINT ["java","-Xmx128m","-jar","app.jar"]
gateway
FROM java:openjdk-8u111-jdk COPY gateway-project-0.0.1-SNAPSHOT.jar app.jar EXPOSE 29107 ENTRYPOINT ["java","-Xmx128m","-jar","app.jar"]
docker-compose.yml
version: '2' services: eurekaserver: # 注意此處的名稱需要添加到eureka客戶端的defaultZone中,相當(dāng)于docker內(nèi)的主機(jī)名 #container_name: eureka_server image: maojindaobike/eurekaserver:230315 ports: - "29108:29108" gateway: #container_name: gateway image: maojindaobike/gateway:230316_v5 ports: - "29107:29107" depends_on: - eurekaserver
啟動(dòng)
docker-compose up -d
擴(kuò)容
擴(kuò)容時(shí),需要顯式端口映射,避免端口沖突
docker-compose.yml
version: '3' services: eurekaserver: #container_name: eureka_server image: maojindaobike/eurekaserver:230315 ports: - "29108:29108" gateway: #container_name: gateway image: maojindaobike/gateway:230316_v5 ports: - "29107" depends_on: - eurekaserver
docker-compose up -d docker-compose up -d --scale gateway=3
docker-compse ps
root@dockerserver:~/springcloud-dockerpose# docker-compose ps /snap/docker/2746/lib/python3.6/site-packages/paramiko/transport.py:32: CryptographyDeprecationWarning: Python 3.6 is no longer supported by the Python core team. Therefore, support for it is deprecated in cryptography. The next release of cryptography (40.0) will be the last to support Python 3.6. from cryptography.hazmat.backends import default_backend Name Command State Ports ------------------------------------------------------------------------------------------------------------------------- springcloud-dockerpose_eurekaserver_1 java -Xmx128m -jar app.jar Up 0.0.0.0:29108->29108/tcp,:::29108->29108/tcp springcloud-dockerpose_gateway_1 java -Xmx128m -jar app.jar Up 0.0.0.0:49154->29107/tcp,:::49154->29107/tcp springcloud-dockerpose_gateway_2 java -Xmx128m -jar app.jar Up 0.0.0.0:49156->29107/tcp,:::49156->29107/tcp springcloud-dockerpose_gateway_3 java -Xmx128m -jar app.jar Up 0.0.0.0:49155->29107/tcp,:::49155->29107/tcp
到此這篇關(guān)于docker-compose部署eureka服務(wù)端、客戶端的文章就介紹到這了,更多相關(guān)docker compose部署eureka內(nèi)容請搜索腳本之家以前的文章或繼續(xù)瀏覽下面的相關(guān)文章希望大家以后多多支持腳本之家!
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