部署 Dubbo 应用到 Docker 环境

部署 Dubbo 应用到 Docker 示例

总体目标

  • 部署 Docker
  • 部署 Zookeeper
  • 部署 Dubbo-admin + Zookeeper
  • 部署 Producer + Zookeeper 与 Consumer + Zookeeper

基本流程与工作原理

img

详细步骤

zookeeper

下载项目到本地 

wget https://dlcdn.apache.org/zookeeper/zookeeper-x.x.x/apache-zookeeper-x.x.x-bin.tar.gz

apache-zookeeper-x.x.x.tar.gz 为未编译版本, 自 3.5.5 版本以后，已编译的 jar 包后缀 -bin ，请使用 apache-zookeeper-x.x.x-bin.tar.gz

解压项目到本地 

tar zxvf apache-zookeeper-x.x.x-bin.tar.gz -C /usr/local/ && cd /usr/local

移动项目修改为 zookeeper 并切换至 zookeeper 

mv apache-zookeeper-x.x.x-bin zookeeper && cd zookeeper

创建目录并切换此目录导入内容 

mkdir -p /usr/local/docker/zookeeper/data && cd /usr/local/docker/zookeeper/data && echo 1 > myid

拉取 zookeeper 

docker pull zookeeper

运行 zookeeper 

docker run -p 2181:2181 -p 2888:2888 -p 3888:3888 -v /usr/local/docker/zookeeper/data:/data/ --name zookeeper --restart always -d zookeeper

测试 zookeeper 

docker run -it --rm --link zookeeper:zookeeper zookeeper zkCli.sh -server zookeeper

dubbo-admin

下载项目到本地 

git clone https://github.com/apache/dubbo-admin.git && cd dubbo-admin

配置 

# dubbo-admin-server/src/main/resources/application.properties
server.port=38080
dubbo.protocol.port=30880
dubbo.application.qos-port=32222
admin.registry.address=zookeeper://<docker-zookeeper-ip>:2181
admin.config-center=zookeeper://<docker-zookeeper-ip>:2181
admin.metadata-report.address=zookeeper://<docker-zookeeper-ip>:2181
admin.root.user.name=root
admin.root.user.password=root

docker run -it --rm -v /the/host/path/containing/properties:/config -p 38080:38080 apache/dubbo-admin

将 /the/host/path/containing/properties 替换为宿主机上包含 application.properties 文件的实际路径（必须是一个有效目录的绝对路径）。

进入服务 

http://<IP>:38080
img
dubbo
下载项目到本地
git clone https://github.com/apache/dubbo-samples.git && cd dubbo-samples/1-basic/dubbo-samples-spring-boot

修改 Provider 的 zookeeper 地址
# dubbo-samples-spring-boot-provider/src/main/resources/application.yml
dubbo:
  application:
    name: dubbo-springboot-demo-provider
  protocol:
    name: dubbo
    port: -1
  registry:
    id: zk-registry
    address: zookeeper://<docker-zookeeper-ip>:2181
  config-center:
    address: zookeeper://<docker-zookeeper-ip>:2181
  metadata-report:
    address: zookeeper://<docker-zookeeper-ip>:2181

修改 Consumer 的 zookeeper 地址
# dubbo-samples-spring-boot-consumer/src/main/resources/application.yml
dubbo:
  application:
    name: dubbo-springboot-demo-consumer
  protocol:
    name: dubbo
    port: -1
  registry:
    id: zk-registry
    address: zookeeper://<docker-zookeeper-ip>:2181
  config-center:
    address: zookeeper://<docker-zookeeper-ip>:2181
  metadata-report:
    address: zookeeper://<docker-zookeeper-ip>:2181

切换到服务示例
cd && cd dubbo-samples/1-basic/dubbo-samples-spring-boot

打包编译
mvn clean package

[INFO] ------------------------------------------------------------------------
[INFO] Reactor Summary:
[INFO]
[INFO] Dubbo Samples Spring Boot 1.0-SNAPSHOT ............. SUCCESS [  8.147 s]
[INFO] dubbo-samples-spring-boot-interface ................ SUCCESS [ 51.524 s]
[INFO] dubbo-samples-spring-boot-provider ................. SUCCESS [02:27 min]
[INFO] dubbo-samples-spring-boot-consumer 1.0-SNAPSHOT .... SUCCESS [  0.284 s]
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 03:49 min
[INFO] Finished at: 2023-01-16T09:34:39-05:00
[INFO] ------------------------------------------------------------------------

Producer
切换至目标服务
cd dubbo-samples-spring-boot-provider/target

构建镜像
cat <<EOF > Dockerfile
FROM openjdk:8-jdk-alpine
ADD dubbo-samples-spring-boot-provider-1.0-SNAPSHOT.jar /app.jar
ENTRYPOINT ["java", "-Djava.security.egd=file:/dev/urandom", "-jar", "/app.jar"]

编译镜像
docker build --no-cache -t dubbo-springboot-provider:alpine .

运行服务
docker run --name provider -d dubbo-springboot-provider:alpine

Consumer
切换至目标服务
cd dubbo-samples-spring-boot-consumer/target

构建镜像
cat <<EOF > Dockerfile
FROM openjdk:8-jdk-alpine
ADD dubbo-samples-spring-boot-consumer-1.0-SNAPSHOT.jar /app.jar
ENTRYPOINT ["java", "-Djava.security.egd=file:/dev/urandom", "-jar", "/app.jar"]

编译镜像
docker build --no-cache -t dubbo-springboot-consumer:alpine .

运行服务
docker run --name consumer -d dubbo-springboot-consumer:alpine