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1.17.3. Viewing service mesh data in the Kiali console

The Kiali Graph offers a powerful visualization of your mesh traffic. The topology combines real-time request traffic with your Istio configuration information to present immediate insight into the behavior of your service mesh, letting you quickly pinpoint issues. Multiple Graph Types let you visualize traffic as a high-level service topology, a low-level workload topology, or as an application-level topology.

There are several graphs to choose from:

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

Graph nodes are decorated with a variety of information, pointing out various route routing options like virtual services and service entries, as well as special configuration like fault-injection and circuit breakers. It can identify mTLS issues, latency issues, error traffic and more. The Graph is highly configurable, can show traffic animation, and has powerful Find and Hide abilities.

Click the Legend button to view information about the shapes, colors, arrows, and badges displayed in the graph.

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

1.17.3.1. Changing graph layouts in Kiali
링크 복사

The layout for the Kiali graph can render differently depending on your application architecture and the data to display. For example, the number of graph nodes and their interactions can determine how the Kiali graph is rendered. Because it is not possible to create a single layout that renders nicely for every situation, Kiali offers a choice of several different layouts.

Prerequisites

  • If you do not have your own application installed, install the Bookinfo sample application. Then generate traffic for the Bookinfo application by entering the following command several times. 

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

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

Procedure

  1. Launch the Kiali console.
  2. Click Log In With OpenShift.
  3. In Kiali console, click Graph to view a namespace graph.
  4. From the Namespace menu, select your application namespace, for example, bookinfo.

  5. To choose a different graph layout, do either or both of the following:

    • Select different graph data groupings from the menu at the top of the graph.

      • App graph
      • Service graph
      • Versioned App graph (default)
      • Workload graph

    • Select a different graph layout from the Legend at the bottom of the graph.

      • Layout default dagre
      • Layout 1 cose-bilkent
      • Layout 2 cola
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