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Dubbo in Docker Example

Dubbo running in Docker, packaged as a springboot application.

Services

This demo consistes three services:

  • a zookeper instance
  • a service producer
  • a service consumer

The service producer exposes a Greeting service through RPC, service consumer access the producer.

Zookeeper

Run a docker image.

Service Producer

Code in service-producer. API defined in service-api.

Build docker image:

cd service-producer
mvn package
docker build -t producer .

Service Consumer

Code in service-consumer.

Build docker image:

cd service-consumer
mvn package
docker build -t consumer .

Run

Use docker-compose command to run it.

cd docker
docker-compose up -d

Verify that all works:

$curl http://localhost:8899/
Greetings from Dubbo Docker

Run it on Alibaba Cloud

Use docker/docker-compose-acs.yml to deploy this application to Aliyun Container Service (Alibaba Cloud) swarm cluster.

2017.11.30 Update: Add compose v3 sample yml file: docker/docker-compose-v3.yml

Deploy the application to Kubernetes

2018.8.17 Update:

You can user helm to install this sample in a Kubernetes cluster.

$ cd docker
$ helm install -n dubbo-sample dubbo-sample

Check helm status

$ helm list
NAME          REVISION	UPDATED                 	STATUS  	CHART                  	NAMESPACE
dubbo-sample  1       	Fri Aug 17 07:27:00 2018	DEPLOYED	dubbo-sample-0.0.1     	default

Check kubernetes and service status:

$ kubectl get po,svc
NAME                                              READY     STATUS    RESTARTS   AGE
pod/consumer-749bf8484d-js6wf                     1/1       Running   0          7m
pod/producer-b4f76b6c7-b8jhg                      1/1       Running   0          7m
pod/zookeeper-8455f4fdc9-ht9ms                    1/1       Running   0          7m

NAME                              TYPE        CLUSTER-IP      EXTERNAL-IP   PORT(S)    AGE
service/consumer                  ClusterIP   172.19.10.188   <none>        8899/TCP   7m
service/kubernetes                ClusterIP   172.19.0.1      <none>        443/TCP    45d
service/zookeeper                 ClusterIP   172.19.10.253   <none>        2181/TCP   7m

Expose consumer a public IP, or add ingress to it, Visit consumer via browser, you will see the greetings.

Greetings from Dubbo Docker

This sample tested on Aliyun Container Service for Kubernetes.