README.md

Exercise 5 - Installing Istio

Download Istio

1. Either download Istio directly from https://github.com/istio/istio/releases or get the latest version using curl:

   curl -L https://git.io/getLatestIstio | sh -
   

2. Extract the installation files.

3. Add the istioctl client to your PATH. For example, run the following command on a MacOS or Linux system:

   Remember to change the [version] to the current value

   export PATH=$PWD/istio-[version]/bin:$PATH
   

Install Istio on the Kubernetes cluster

1. Change the directory to the Istio file location.

   cd [path_to_istio-version]
   

2. Install Istio on the Kubernetes cluster.

   kubectl apply -f install/kubernetes/istio-demo-auth.yaml
   

View the Istio deployments

Istio is deployed in a separate Kubernetes namespace istio-system You can watch the state of Istio and other services and pods using the watch flag (-w) when listing Kubernetes resources. For example, in two separate terminal windows run:

kubectl get pods -w --all-namespaces

kubectl get services -w --all-namespaces

What just happened

Congratulations! You have installed Istio into the Kubernetes cluster. A lot has been installed:

• Istio Controllers and related RBAC rules
• Istio Custom Resource Definitions
• Prometheus and Grafana for Monitoring
• Jeager for Distributed Tracing
• Istio Sidecar Injector (we'll take a look next next section)

Continue to Exercise 6 - Creating a service mesh with Istio Proxy