部署 Dubbo 应用到 Kubernetes + Docker 环境

部署 Dubbo 应用到 Kubernetes + Docker 示例

总体目标

Kubernetes
Zookeeper
Dubbo-admin + Zookeeper
Producer + Zookeeper 与 Consumer + Zookeeper

基本流程与工作原理

详细步骤

创建命名空间

kubectl create ns dubbo-demo

zookeeper

获取图表

helm repo add bitnami https://charts.bitnami.com/bitnami

安装 zookeeper

helm install zookeeper bitnami/zookeeper --set persistence.enabled=false -n dubbo-demo

查看 zookeeper

kubectl get pods -n dubbo-demo

dubbo-admin

克隆项目到本地

git clone https://github.com/apache/dubbo-admin.git && cd /dubbo-admin/deploy/k8s

创建服务

kubectl apply -f ./ -n dubbo-demo

启动服务

kubectl --namespace dubbo-demo port-forward service/dubbo-admin 38080:38080

登录页面

服务查询

dubbo

克隆项目到本地

git clone https://github.com/apache/dubbo-samples.git && 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] ------------------------------------------------------------------------

配置

### 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://zookeeper:2181
  config-center:
    address: zookeeper://zookeeper:2181
  metadata-report:
    address: zookeeper://zookeeper:2181

配置

### 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://zookeeper:2181
  config-center:
    address: zookeeper://zookeeper:2181
  metadata-report:
    address: zookeeper://zookeeper: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

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"]
EOF

编译镜像

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

导入服务

cat <<EOF > provider.yaml
apiVersion: v1
kind: Pod
metadata:
  name: dubbo-springboot-provider
  namespace: dubbo-demo
spec:
  containers:
  - name: provider
    image: dubbo-springboot-provider:alpine
EOF

创建服务

kubectl create -f provider.yaml

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"]
EOF

编译服务

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

导入服务

cat <<EOF > consumer.yaml
apiVersion: v1
kind: Pod
metadata:
  name: dubbo-springboot-consumer
  namespace: dubbo-demo
spec:
  containers:
  - name: consumer
    image: dubbo-springboot-consumer:alpine
EOF

创建服务