Install of ServiceCenter

Service-Center

ServiceCenter is a service registry. The service provider can register its own instance information to the ServiceCenter for the service consumer to discover and use.

Run with release package

1. Download the latest release package of Service-Center
   This example uses apache-servicecomb-service-center-2.1.0-linux-amd64.tar.gz
2. Start service-center

   # Decompression the package
   $ tar -zxvf  apache-servicecomb-service-center-2.1.0-linux-amd64.tar.gz
      
   # Start the service of servicecenter
   $ cd apache-servicecomb-service-center-2.1.0-linux-amd64/
   $ ./start-service-center.sh
   

3. View service status

   # View process status
   $ ps -ef | grep service-center
   root     27048     1  2 14:38 pts/2    00:00:00 ./service-center
   root     27164 22742  0 14:38 pts/2    00:00:00 grep --color=auto service-center
      
   # View the listening port
   $ netstat -apn | grep :30100
   tcp        0      0 127.0.0.1:30100         0.0.0.0:*               LISTEN      27048/service-cente
      
   # Call the interface with the curl command
   $ curl http://127.0.0.1:30100
   {"_links":{"pb:latest-pact-versions":{"href":"http://127.0.0.1:30100/pacts/latest","title":"Latest pact versions"},"pb:latest-provider-pacts":{"href":"http://127.0.0.1:30100/pacts/provider/{provider}/latest","title":"Latest pacts by provider","templated":true},"pb:latest-provider-pacts-with-tag":{"href":"http://127.0.0.1:30100/pacts/provider/{provider}/latest/{tag}","title":"Latest pacts by provider with a specified tag","templated":true},"pb:pacticipants":{"href":"http://127.0.0.1:30100/participants","title":"Pacticipants"},"pb:publish-pact":{"href":"http://127.0.0.1:30100/pacts/provider/{provider}/consumer/{consumer}/version/{consumerApplicationVersion}","title":"Publish a pact","templated":true},"pb:webhooks":{"href":"http://127.0.0.1:30100/webhooks","title":"Webhooks"},"self":{"href":"http://127.0.0.1:30100/","title":"Index"}},"curies":[{"href":"http://127.0.0.1:30100/doc/{rel}","name":"pb"}]}
      
   # If the above content is returned, the startup was successful.
   

4. Start the website of frontend and view the status

   $ ./start-frontend.sh
   $ ps -ef | grep frontend   
   root      1875 32096  0 17:43 pts/6    00:00:00 grep --color=auto frontend
   root      3020     1  0 Nov05 ?        00:00:23 ./frontend
      
   # View the listening port
   $ netstat -apn | grep :30103
   tcp        0      0 127.0.0.1:30103     0.0.0.0:*               LISTEN      3020/frontend
   

5. Open the website page “http://127.0.0.1:30103” with a browser, and view instances of the service center in website.（The result is success if like this）
   
   Warning
   • If the frontend service is started not locally, it cannot be accessed through http://127.0.0.1:30103; you need to modify the “frontend_host_ip” in the configuration file as the host IP ，and open the website to accessed http://{ip}:30103
   • If Service-Center needs to provide external services, you need to modify “httpaddr”, and external applications use http://{ip}:30100 for access. Like this：
     

Run with docker

1. Download and run docker image

   # Download the docker image
   $ docker pull servicecomb/service-center
   # Start docker container
   $ docker run -d -p 30100:30100 servicecomb/service-center
   

2. View container status and listening port

   $ docker ps | grep service-center
   0733021cd96d        servicecomb/service-center        "/opt/service-cent..."   3 minutes ago       Up 3 minutes        0.0.0.0:30100->30100/tcp        gallant_varahamihira 
   

Deployment with Kubernetes

1. Configuring the deployment of kubernetes

      
   $ cat <<EOF >> ./service-center.yaml
   apiVersion: v1
   kind: Service
   metadata:
     name: servicecenter
     namespace: svccomb-system
     labels:
       app: servicecenter
   spec:
     ports:
     - port: 30100
       name: http
     selector:
       app: servicecenter
   ---
   apiVersion: extensions/v1beta1
   kind: Deployment
   metadata:
     name: servicecenter
     namespace: svccomb-system
   spec:
     replicas: 1
     template:
       metadata:
         labels:
           app: servicecenter
           version: v1
       spec:
         containers:
         - name: servicecenter
           image: servicecomb/service-center:latest
           imagePullPolicy: IfNotPresent
           ports:
           - containerPort: 30100
   EOF
   

2. Deployment

   # create namespace "svccomb-system"
   $ kubectl create namespace svccomb-system
      
   # deploy service-center
   $ kubectl apply -f service-center.yaml
   

3. View Pod status and Service port

   # View Pod status
   $ kubectl -n svccomb-system get pod
   NAME                             READY   STATUS    RESTARTS   AGE
   servicecenter-7d964b7644-h6f4s   1/1     Running   0          72s
      
   # View the the listening port of service
   $ kubectl -n svccomb-system get service
   NAME            TYPE        CLUSTER-IP       EXTERNAL-IP   PORT(S)     AGE
   servicecenter   ClusterIP   10.104.241.163   <none>        30100/TCP   118s
      
   $ curl http://10.104.241.163:30100
   ...