Introduction to performance monitoring using Prometheus and Grafana

In this chapter, we will reuse the deployment of Prometheus and Grafana that we created in Chapter 18, Using a Service Mesh to Improve Observability and Management, in the Deploying Istio in the Kubernetes cluster section. Also in that chapter, in the Introducing the runtime components in Istio section, we were briefly introduced to Prometheus, a popular open source database for time series such as performance metrics. We were also introduced to Grafana as an open source tool for visualizing performance metrics. Istio's console for observability, Kiali, is integrated with Grafana. A user can navigate from a service of interest in Kiali to its corresponding performance metrics in Grafana. Kiali can also render some performance-related graphs without the use of Grafana. In this chapter, we will...