:Create an application from an orchestration template

Log on to the ACK console.

Authorize the cluster to manage orchestration templates.

1. On the Clusters page, find the cluster that you want to manage and click the name of the cluster or click Details in the Actions column. The details page of the cluster appears.

2. On the Cluster Information page, click the Cluster Resources tab.

3. On the Cluster Resources tab, click KubernetesWorkerRole-**** to the right of Worker RAM Role.

   

4. On the KubernetesWorkerRole-**** page, click the Permissions tab and then click the policy name of k8sWorkerRolePolicy-****.

5. On the policy details page, click the Policy Document tab and click Modify Policy Document.

6. In the Modify Policy Document panel, add the following code block and click OK.

   {
       "Action": [
           "cs:CreateTemplate",
           "cs:DescribeTemplates",
           "cs:DescribeTemplateAttribute",
           "cs:UpdateTemplate",
           "cs:DeleteTemplate"
       ],
       "Resource": [
           "*"
       ],
       "Effect": "Allow"
   }

In the upper-left corner of the ACK console, click the icon to the left of the cluster name.

In the left-side navigation pane of the ACK console, choose Multi-cluster > Application Center.

On the Application Center page, click Create Application.

On the Source wizard page, set the parameters.

1. In the Install appcenter section, select the cluster where you want to install appcenter and click Install.

   Note

   This step is required only when you use Application Center to create applications for the first time.

2. In the Source section, click YAML Template.

3. Click Next.

On the Application Configurations wizard page, set the parameters.

1. Set Name and Description.

2. Specify a template for the application. You can select an existing template or create a template. In this topic, a template is created.

   1. Click the Create Template tab and then click Create with YAML in the upper-right corner of the tab.

   2. Copy the following code into the Create panel and click OK.

      apiVersion: apps/v1
      kind: Deployment
      metadata:
        name: demo
        labels:
          app: demo
      spec:
        minReadySeconds: 5
        revisionHistoryLimit: 5
        progressDeadlineSeconds: 60
        strategy:
          rollingUpdate:
            maxUnavailable: 1
          type: RollingUpdate
        selector:
          matchLabels:
            app: demo
        template:
          metadata:
            annotations:
              prometheus.io/scrape: "true"
              prometheus.io/port: "9797"
            labels:
              app: demo
          spec:
            containers:
            - name: demo
              image: registry.cn-hangzhou.aliyuncs.com/acs/rollouts-demo:red
              imagePullPolicy: IfNotPresent
              ports:
              - name: http
                containerPort: 8080
                protocol: TCP
              readinessProbe:
                tcpSocket:
                  port: 8080
                initialDelaySeconds: 5
                timeoutSeconds: 5
              resources:
                limits:
                  cpu: 2000m
                  memory: 512Mi
                requests:
                  cpu: 100m
                  memory: 64Mi
      ---
      apiVersion: v1
      kind: Service
      metadata:
        name: demo-svc
      spec:
        selector:
          app: demo
        ports:
          - protocol: TCP
            port: 80
            targetPort: 8080
      ---
      apiVersion: networking.k8s.io/v1
      kind: Ingress
      metadata:
        name: demo
        labels:
          app: demo
      spec:
        rules:
          - host: app.demo.example.com
            http:
              paths:
              - path: /
                pathType: Prefix
                backend:
                  service:
                    name: demo-svc
                    port:
                      number: 80

3. Click Next.

On the Release Configurations wizard page, set the parameters.

1. In the Release Configurations section, select the release type. Full Release and Canary Release are supported.

   Note

   If this is the initial release of the application, you can select only Full Release. You can select Full Release or Canary Release when you update the application.

2. In the Select Cluster section, click Add to the left side of the cluster that you want to select. The added cluster appears in the Cluster section. Then, select the namespace where you want to deploy the new application version in the Cluster section.

   Note

   If you want to select a cluster that does not have Internet access, you must associate an elastic IP address (EIP) with the cluster API server to enable Internet access. For more information, see Control public access to the API server of a cluster.

3. Click Release Now.

4. In the Confirm Release message, click OK.

   In the Release Log step, you can view the deployment progress.

In the Release Log step, click Complete.

1. Log on to the ACK console.

2. In the left-side navigation pane of the ACK console, click Clusters.

3. On the Clusters page, find the cluster that you want to manage and click the name of the cluster or click Details in the Actions column. The details page of the cluster appears.

4. In the left-side navigation pane of the details page, choose Network > Ingresses.

5. On the Ingresses page, check the endpoint of the Ingress created for the demo application.

Add the following content to the hosts file:

<Endpoint> app.demo.example.com 

Enter app.demo.example.com in the address bar of your browser and press Enter.