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You can view your application’s topology, health and metrics in the Kiali console. If your service is having issues, the Kiali console offers ways to visualize the data flow through your service. You can view insights about the mesh components at different levels, including abstract applications, services, and workloads. It also provides an interactive graph view of your namespace in real time.

Before you begin

You can observe the data flow through your application if you have an application installed. If you don’t have your own application installed, you can see how observability works in Red Hat OpenShift Service Mesh by installing the Bookinfo sample application.

Viewing service mesh data

The Kiali operator works with the telemetry data gathered in Red Hat OpenShift Service Mesh to provide graphs and real-time network diagrams of the applications, services, and workloads in your namespace.

To access the Kiali console you must have Red Hat OpenShift Service Mesh installed and projects configured for the service mesh.

Procedure
  1. Use the perspective switcher to switch to the Administrator perspective.

  2. Click HomeProjects.

  3. Click the name of your project. For example, click bookinfo.

  4. In the Launcher section, click Kiali.

  5. Log in to the Kiali console with the same user name and password that you use to access the OpenShift Container Platform console.

When you first log in to the Kiali Console, you see the Overview page which displays all the namespaces in your service mesh that you have permission to view.

If you are validating the console installation, there might not be any data to display.

Working with data in the Kiali console

From the Graph menu in the Kiali console, you can use the following graphs and viewing tools to gain deeper insights about data that travels through your service mesh. These tools can help you identify problems with services or workloads.

There are several graphs to choose from:

  • The App graph shows an aggregate workload for all applications that are labeled the same.

  • The Versioned App graph shows a node for each version of an application. All versions of an application are grouped together.

  • The Workload graph shows a node for each workload in your service mesh. This graph does not require you to use the application and version labels. If your application does not use version labels, use this the graph.

  • The Service graph shows a node for each service in your mesh but excludes all applications and workloads from the graph. It provides a high level view and aggregates all traffic for defined services.

To view a summary of metrics, select any node or edge in the graph to display its metric details in the summary details panel.

Namespace graphs

The namespace graph is a map of the services, deployments, and workflows in your namespace and arrows that show how data flows through them.

Prerequisites
  • Install the Bookinfo sample application.

Procedure
  1. Send traffic to the mesh by entering the following command several times.

    $ curl "http://$GATEWAY_URL/productpage"

    This command simulates a user visiting the productpage microservice of the application.

  2. In the main navigation, click Graph to view a namespace graph.

  3. Select bookinfo from the Namespace menu.