CloudOps Orchestration Service:Deploy an application to a group of ECS instances

Solution architecture

Application Management, Object Storage Service (OSS), and ECS work together to enable automated application deployment.

The core workflow is as follows:

1. Define the application and resources: Create an application and an application group in Application Management, and then import the target ECS instances into the group.

2. Prepare the deployment: Upload the application's JAR package to a bucket in OSS. Then, create a deployment for the application that contains the JAR package information and deployment scripts.

3. Execute the deployment: Use Application Management to publish the specified deployment to the target application group. Application Management uses automated tasks to download the deployment and start the application.

Procedure

1. Create an application and import your Elastic Compute Service (ECS) instances.

   1. If you do not have an ECS instance, go to the ECS console - Custom Launch page to create a Linux ECS instance.

      The following example scripts are for these images. If you use a different image, you must modify the scripts accordingly.

   2. Go to the ECS console - Application management page and click Create from Existing Resources to create an application and an application group, and import the ECS instance into the application group.

2. Create an OSS deployment.

   1. Download the official sample JAR package and upload it to OSS.

   2. Go to the ECS console - Application management page. On the My Applications tab, click the name of your target application.

   3. On the application details page, select the Deployment tab, and then click Create Deployment.

   4. On the Create Deployment page, set Deployment Type to OSS File. Configure the parameters, and then click OK.

      • OSS file information: Specify the OSS bucket and the file path of the JAR package.

        If the ECS instance and the OSS bucket are in the same region, you can select internal network download to increase the download speed.

      • Working directory: Set the execution directory for the start and stop scripts. The OSS file is automatically downloaded to this directory. Example: /root/deploy.

      • Application start script:

        Alibaba Cloud Linux

        start_application() {
          set -e
          yum install -y maven-3.5.4
          java -jar ./sample-spring-1.0-SNAPSHOT.jar &
        }
        
        start_application

        Ubuntu

        start_application() {
          set -e
          apt update
          apt install -y maven
          java -jar ./sample-spring-1.0-SNAPSHOT.jar &
        }
        
        start_application

      • Application stop script:

        ### Stop the application (if any)
        stop_application() {
          PID=$(ps -ef | grep "sample-spring-1.0-SNAPSHOT.jar" | grep -v "grep" | awk '{print $2}')
          if [ -n "$PID" ]; then
            kill -9 $PID
          fi
        }
        
        stop_application

3. Go back to the deployment list, find the deployment that you created, and click Deploy. Select the target group and click OK to start the deployment.

4. Verify the result.

   1. Navigate to the details page of the target instance. Click Connect and select Workbench. Follow the on-screen prompts to access the terminal.

   2. Run the curl http://localhost:8080/hello command. A response of Alibaba Spring Sample! indicates a successful deployment.