Alibaba Cloud Service Mesh:Use Mesh Topology to view the topology of an application

Step 1: Enable Mesh Topology

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 that you want to manage. In the left-side navigation pane, choose Observability Management Center > Mesh Topology. In the Enable ASM Mesh Topology section, perform operations based on the version of your ASM instance.

   • If the version of your ASM instance is earlier than V1.18.2.112, click To enable.

   • If the version of your ASM instance is V1.18.2.112 or later, select either of the following deployment modes. For more information about the differences between the two modes and how to configure the managed mode, see Enable Mesh Topology in managed mode.

     • Click In-Kubernetes-cluster Mode, enter the HTTP API URL of the Prometheus instance used by ASM Mesh Topology, and then click To enable.

     • Click Managed Mode and then click To enable. In the dialog box that appears, configure the required parameters and click OK.

Step 2: Access Mesh Topology by using a CLB instance

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 that you want to manage. In the left-side navigation pane, choose Observability Management Center > Mesh Topology.

3. In the Access section, perform one of the following operations based on the version of your ASM instance:

   • If the version of your ASM instance is earlier than V1.17.2.19, turn on the switch next to Automatically Create an Internet-facing CLB Instance to Access ASM Mesh Topology. In the message that appears, click OK.

   • If the version of your ASM instance is V1.17.2.19 or later, turn on Create a CLB Instance to Access ASM Mesh Topology. In the dialog box that appears, configure the required parameters and click OK.

   After Mesh Topology access is enabled, the ASM instance will enter the update state for a short period.Service Mesh

4. Check whether the ASM instance update is complete.Service Mesh

   1. In the left-side navigation pane, choose ASM Instance > Base Information.

   2. In the Basic Information section, check the Status of the ASM instance.Service Mesh

      If the Status is Updating, the ASM instance update is in progress. If the Status is Running, the update is complete.

5. In the left-side navigation pane, choose Observability Management Center > Mesh Topology. On the Mesh Topology page, click Copy token and open in new window in the Access section.

6. On the logon page of Mesh Topology, paste the token and click Login to open the Mesh Topology console.

Step 3: View the topology of an application

1. In the address bar of your browser, enter http://{IP address of the ingress gateway}/productpage to access the Bookinfo application.

   For more information about how to obtain the IP address of the ingress gateway, see "Step 3: Query the gateway address" in Use Knative on ASM to deploy a serverless application.

2. In the Mesh Topology console, select default from the Namespace drop-down list and select Workload graph from the Versioned App graph drop-down list to view the call relationships between workloads and traffic flows.

   Note

   You can also select default from the Namespace drop-down list, and select App graph, Service graph, or Versioned App graph from the Versioned App graph drop-down list to view the call relationships between applications, services, and application versions and the traffic flows.

   

   Click reviews-v2 in the topology. You can view details such as the running status, inbound traffic, and outbound traffic of the workload on the right side of the page.

   

References

• If you find that some requests experience high response latency, you can use access logs to locate the cause of high latency. For more information, see Locate the cause of high response latency by using access logs in ASM.

• If you want to obtain the lowest service call latency, you can use the zone aware routing feature to allow a client to call a destination service deployed in the same zone first. For more information, see Verify the zone aware routing feature on the topology of an ASM instance.

• If you want to monitor the traffic topologies of multiple clusters, you can use the Mesh Topology feature in managed mode. In managed mode, you need to deploy only one Mesh Topology service for the entire ASM instance. This reduces the configuration workload. For more information, see Enable Mesh Topology in managed mode.

• You can perform diagnostics on ASM instances, such as data plane version checks, service port checks, and service association checks, to detect potential issues in a timely manner. For more information, see Diagnose ASM instances.