Monitoring with Istio

With Istio, you gain monitoring of the traffic between microservices by default. You can use the Istio Dashboard for monitoring your microservices in real time.

Istio is integrated out-of-the-box with Prometheus time series database and monitoring system. Prometheus collects various traffic-related metrics and provides for them.

See below several examples of Prometheus Istio-related queries.

1. Access the Prometheus UI at http://my-istio-logs-database.io. (The URL should be in your /etc/hosts file, you set it ).

   Prometheus Query UI

2. Run the following example queries in the Expression input box. Push the Execute button to see query results in the Console tab. The queries use tutorial as the name of the application’s namespace, substitute it with the name of your namespace. For best results, run the real-time traffic simulator described in the previous steps when querying data.

   1. Get all the requests in your namespace:

   3. Rate of requests over the past 5 minutes to all instances of the reviews microservice:

The queries above use the metric, which is a standard Istio metric. You can observe other metrics, in particular, the ones of Envoy ( is the sidecar proxy of Istio). You can see the collected metrics in the insert metric at cursor drop-down menu.

Congratulations on completing the tutorial!

These tasks are a great place for beginners to further evaluate Istio’s features using this demo installation:

• Fault injection
• Visualizing metrics
• Visualizing your mesh

• Deployment best practices

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