Difficulty: Introduction
Estimated Time: 25 minutes

Networking layers have traditionally been a burden on engineering organization to get networking right. Networking layers such as meshes look as clusters as a whole and attempt to add networking controls. An efficient mesh is one that can be declared with infrastructure-as-code (IaC).

Istio is a specific networking mesh you can add to your cloud native cluster. It's tuned for ease of use with Kubernetes, and can be used for meshing other services outside of Kubernetes. Use Istio for declarative control over of these networking architecture x-ilities:

  • Connectability
  • Securability
  • Controllability
  • Observability

Istio (in the Greek alphabet, ιστίο) is Greek for the noun “sail,” and is pronounced "iss-teeh-oh.".

At a high level, Istio helps reduce the complexity of these deployments, and eases the strain on your development teams. It is a completely open source service mesh that layers transparently onto existing distributed applications. It is also a platform, including APIs that let it integrate into any logging platform, or telemetry or policy system. Istio’s diverse feature set lets you successfully, and efficiently, run a distributed microservice architecture, and provides a uniform way to secure, connect, and monitor microservices.

This scenario has been adapted Istio' Getting Started guide.

In the following steps you will learn:

  • how to install Istio on Kubernetes following its recommended best practices,
  • how to install Istio's Bookinfo as a Hello World for Istio.
  • how to start manipulating Istio declarations to control your network close to the application plane.

In this scenario you experienced some important Istio features, but there are a small selection of how it helps you with

  • Connectability
  • Securability
  • Controllability
  • Observability

Lessons Learned

With these steps you have learned:

  • ✔ how to install Istio on Kubernetes following its recommended best practices,
  • ✔ how to install Istio's Bookinfo as a Hello World for Istio,
  • ✔ how to start manipulating Istio declarations to control your network close to the application plane.

Look for more Katacodas to explore other Istio features as they arrive.

References


For a deeper understanding of these topics and more join
Jonathan Johnson
at various conferences, symposiums, workshops, and meetups.

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Istio Getting Started

Step 1 of 10

Kubernetes Cluster

For this scenario, Katacoda has just started a fresh Kubernetes cluster for you. Verify it's ready for your use.

kubectl version --short && \ kubectl get componentstatus && \ kubectl get nodes && \ kubectl cluster-info

The Helm package manager used for installing applications on Kubernetes is also available.

helm version --short

Kubernetes Dashboard

You can administer your cluster with the kubectl CLI tool or use the visual Kubernetes Dashboard. Use this script to access the protected Dashboard.

token.sh