Convert an ECS application to a Kubernetes application-Enterprise Distributed Application Service(EDAS)-阿里云帮助中心

If your business needs grow, you may require your Elastic Compute Service (ECS) application to support single-machine multi-instance or high-density deployments. You may also want to manage your application with Kubernetes (K8s) tools, such as Kubectl, or use other K8s features. In the Enterprise Distributed Application Service (EDAS) console, you can use an ECS application as a template to create a K8s application with the same properties. The original ECS application is retained. This topic describes how to convert an ECS application to a K8s application.

Prerequisites

An ECS application has been created. For more information, see Create and deploy an application in an ECS cluster.

Procedure

EDAS console Log on to the . In the left-side navigation pane, choose Application Management > Applications. In the top navigation bar, select a region. In the upper part of the page, select a microservice namespace. In the upper-left corner of the Applications page, click Create Application.

On the Basic Information tab, configure Cluster Type and Application Source Type, and then click Next.

Parameter	Description
Cluster Type	Select Kubernetes Cluster.
Deployment Type	Select No state (Deployment) or Stateful (StatefulSet) as needed. For more information, see: Create a Kubernetes application using a deployment Create a stateful StatefulSet application
Application Source Type	Select ECS Application. From the Select ECS-based Application list, select an existing ECS application.

On the Application Configuration tab, set Application Name and click Next. On the Advanced Settings tab, click Next.

Feature Name	Compatibility	Description
WAR/JAR package URL	Support	Automatically parsed.
Application type	Support	Automatically parsed.
Tomcat configuration	Support	Automatically parsed.
Health check	Support	Automatically parsed as the liveness probe for the Kubernetes application.
JVM parameters	Support	Automatically parsed.
Instance type	Support	The specifications of the first ECS application instance are automatically parsed.
Number of instances	Support	Automatically parses the number of instances of an ECS application.
Mount script	No	Kubernetes applications provide PreStop and PostStart configurations. For more information, see Configure application lifecycle hooks and probes.
Load balancing	No	Manually configure this after the Kubernetes application is created. For more information, see Add a Server Load Balancer (SLB) instance.
Log configuration	No	Manually configure this after the Kubernetes application is created. For more information, see Configure log collection.

After you configure the advanced settings, click Create Application. In the Creation Completed step, click Create Application.
In the Confirm Application Change Precheck dialog box, click Start Precheck.
1. After the data in the dialog box is refreshed, confirm the precheck items and results and click Continue.
2. (Optional) If you modify the preceding precheck items, click Check Again.
The application requires several minutes to be deployed. During the process, you can view the change records to track the deployment progress of the application on the Change List page. After you deploy the application, go to the Application Overview page to view the running status of pods. If the pods are in the running state, the application is deployed. You can click the running status of pods to view the Deployments, pods, and advanced configurations of the application instances.