Alibaba Cloud Service Mesh：Use Knative on ASM to deploy a serverless application

For an ASM instance whose version is earlier than 1.18.2.104

1. Deploy the Knative Serving component in the ACK or ACK Serverless cluster. Select Kourier for the Gateway parameter.

   • For more information about how to deploy Knative in an ACK cluster, see Deploy Knative.

   • For more information about how to deploy Knative in an ACK Serverless cluster, see Install Knative.

     Important

     After the Knative Serving component is installed, click the Components tab. In the Add-on Component section, uninstall the Kourier component.

2. Log on to the ASM console. In the left-side navigation pane, choose Service Mesh > Mesh Management.

3. On the Mesh Management page, click the name of the ASM instance. In the left-side navigation pane, choose Ecosystem > Knative on ASM.

4. On the Knative on ASM page, click Enable Knative on ASM.

For an ASM instance with a version ranging from 1.18.2.104 to 1.21.6.83

1. Log on to the ASM console. In the left-side navigation pane, choose Service Mesh > Mesh Management.

2. On the Mesh Management page, click the name of the ASM instance. In the left-side navigation pane, choose Ecosystem > Knative on ASM.

3. On the Knative on ASM page, select a Knative version based on your business requirements and click Enable Knative on ASM.

4. Deploy Knative in the ACK or ACK Serverless cluster. Select ASM for the Gateway parameter.

   • For more information about how to deploy Knative in an ACK cluster, see Deploy Knative.

   • For more information about how to deploy Knative in an ACK Serverless cluster, see Install Knative.

For an ASM instance whose version is 1.21.6.84 or later

1. Log on to the ACK console. In the left-side navigation pane, click Clusters.

2. On the Clusters page, click the name of the cluster that you want to manage. Then, choose Applications > Knative in the left-side navigation pane.

3. On the Components tab of the Knative page, click Deploy Knative. In the Gateway section, click the ASM tab and then click Deploy.

   After Knative is installed, you can use ASM in Knative.

   Note

   After a message appears indicating that Knative is installed, make sure that the ingress gateway is created and running properly before you proceed to deploy a Knative Service.

Method 1: Deploy a Knative Service in the ACK console

1. Log on to the ACK console. In the left-side navigation pane, click Clusters.

2. On the Clusters page, find the cluster that you want to manage and click its name. In the left-side pane, choose Applications > Knative.

3. On the Knative page, click the Services tab. In the upper-right corner, click Create Service, set the required parameters, and then click Create.

   For more information about parameters, see Use Knative to deploy serverless applications.

   Parameter	Description	Example
   Namespace	Select the namespace to which the Service belongs.	default
   Service Name	Enter a name for the Service.	helloworld-go
   Image Name	To select an image, click Select Image. In the Select Image dialog box, select an image and click OK. You can specify an image in a private registry. The image address must be in the domainname/namespace/imagename:tag format.	registry.cn-hangzhou.aliyuncs.com/knative-sample/helloworld-go
   Image Version	To select an image version, click Select Image Version. In the Image Version dialog box, select an image version and click OK.	73fbdd56
   Access Protocol	HTTP and gRPC are supported.	HTTP
   Container Port	Specify the container port that you want to expose. The port number must be in the range of 1 to 65535.	8080
   Environment Variables	Click Advanced. In the Environment Variables section, click Add to set environment variables in key-value pairs.	Type: Select Custom. Variable Key: Set it to TARGET. Value/ValueFrom: Set it to Knative.

Method 2: Deploy a Knative Service by using a YAML configuration file

1. Save the following content as a file named helloworld-go.yaml.

   apiVersion: serving.knative.dev/v1
   kind: Service
   metadata:
     name: helloworld-go
     annotations:
       knative.k8s.alibabacloud/tls: "false"
   spec:
     template:
       spec:
         containers:
           - image: registry.cn-hangzhou.aliyuncs.com/acs/helloworld-go:160e4dc8
             ports:
               - containerPort: 8080
             env:
               - name: TARGET
                 value: "Knative"

2. Use kubectl to connect to the ACK cluster. Run the following command to create a Knative Service. Wait until the Knative Service is created.

   kubectl apply -f helloworld-go.yaml

3. Run the following command to view the list of Knative Services:

   kubectl get ksvc

   The system displays information similar to the following output:

   NAME            URL                                        LATESTCREATED         LATESTREADY           READY   REASON
   helloworld-go   http://helloworld-go.default.example.com   helloworld-go-00001   helloworld-go-00001   True

Method 3: Use a template to create a Knative Service

1. Log on to the ACK console. In the left-side navigation pane, click Clusters.

2. On the Clusters page, click the name of the cluster that you want to manage. Then, choose Applications > Knative in the left-side navigation pane.

3. On the Services tab of the Knative page, select default from the Namespace drop-down list, click Create from Template, copy the following YAML content to the code editor, and then click Create to create a Service named helloworld-go.

   apiVersion: serving.knative.dev/v1
   kind: Service
   metadata:
     name: helloworld-go
   spec:
     template:
       spec:
         containers:
         - image: registry.cn-hangzhou.aliyuncs.com/knative-sample/helloworld-go:73 fbdd56 # Replace {REGION-ID} with the region where your cluster resides. 
           env:
           - name: TARGET
             value: "Knative"

Method 1: Query the gateway address in the ACK console

1. Log on to the ACK console. In the left-side navigation pane, click Clusters.

2. On the Clusters page, find the cluster that you want to manage and click its name. In the left-side pane, choose Applications > Knative.

3. Click the Services tab. In the list of Services, click the name of the Knative Service for which you want to query the gateway address to view the details of the Knative Service. In the Basic Information section, you can view and obtain information about Gateway and Default Domain.

Method 2: Query the gateway address in the ASM console

1. Log on to the ASM console. In the left-side navigation pane, choose Service Mesh > Mesh Management.

2. On the Mesh Management page, click the name of the desired ASM instance. In the left-side navigation pane, choose ASM Gateways > Ingress Gateway.

3. In the Service address section on the Ingress Gateway page, view and record the gateway address.