Book Image

Bootstrapping Service Mesh Implementations with Istio

By : Anand Rai
4 (1)
Book Image

Bootstrapping Service Mesh Implementations with Istio

4 (1)
By: Anand Rai

Overview of this book

Istio is a game-changer in managing connectivity and operational efficiency of microservices, but implementing and using it in applications can be challenging. This book will help you overcome these challenges and gain insights into Istio's features and functionality layer by layer with the help of easy-to-follow examples. It will let you focus on implementing and deploying Istio on the cloud and in production environments instead of dealing with the complexity of demo apps.  You'll learn the installation, architecture, and components of Istio Service Mesh, perform multi-cluster installation, and integrate legacy workloads deployed on virtual machines. As you advance, you'll understand how to secure microservices from threats, perform multi-cluster deployments on Kubernetes, use load balancing, monitor application traffic, implement service discovery and management, and much more. You’ll also explore other Service Mesh technologies such as Linkerd, Consul, Kuma, and Gloo Mesh. In addition to observing and operating Istio using Kiali, Prometheus, Grafana and Jaeger, you'll perform zero-trust security and reliable communication between distributed applications. After reading this book, you'll be equipped with the practical knowledge and skills needed to use and operate Istio effectively.
Table of Contents (19 chapters)
Part 1: The Fundamentals
Part 2: Istio in Practice
Part 3: Scaling, Extending,and Optimizing

Inspecting and analyzing the Istio configuration

When debugging the Istio data plane, it is useful to check whether there is any configuration mismatch between the Istio control plane and the data plane. When working with multi-cluster mesh, it is a good idea to first check the connectivity between the control plane and data plane; if your Pod supports curl, then you can use the following command to check the connectivity between the two:

$ kubectl exec -it curl -c curl -n chapter11 -- curl  istiod.istio-system.svc.cluster.local:15014/version

To inspect the configuration, the first checkpoint can be to use the istioctl proxy-status command to find the synchronization state of the cluster, listener, routes, and endpoints configuration between istiod and istio-proxy.

You can use the following command to check the configuration status of the whole cluster:

% istioctl proxy-status
NAME    &...