Install Istio

In this lab you will install Istio.

Download Istio

1. Run the following command from your home directory:

   curl -L https://istio.io/downloadIstio | ISTIO_VERSION={{istio.version}} sh -
   

2. Navigate into the directory created by the above command.

   cd istio-{{istio.version}}
   

Add istioctl to your PATH

The istioctl CLI is located in the bin/ subdirectory.

Note

Cloud Shell only preserves files located inside your home directory across sessions.

This means that if you install a binary to a PATH such as /usr/local/bin, after your session times out that file will no longer be there!

As a workaround, you will add ${HOME}/bin to your PATH and place the binary there.

1. Create a bin subdirectory in your home directory:

   mkdir ~/bin
   

2. Copy the CLI to that subdirectory:

   cp ./bin/istioctl ~/bin
   

3. Add your home bin subdirectory to your PATH

   cat << EOF >> ~/.bashrc
   
   export PATH="~/bin:\$PATH"
   
   EOF
   

   And then:

   source ~/.bashrc
   

Verify istioctl is installed with:

istioctl version

With the CLI installed, proceed to install Istio to Kubernetes.

Install Istio

1. Istio can be installed directly with the CLI:

   istioctl install
   

2. When prompted, enter y to proceed to install Istio.

Take a moment to learn more about Istio installation profiles.

Verify that Istio is installed

1. List Kubernetes namespaces and note the new namespace istio-system.

   kubectl get ns
   

2. Verify that the istiod controller pod is running in that namespace.

   kubectl get pod -n istio-system
   

3. Re-run istioctl version. The output should include a control plane version, indicating that Istio is indeed present in the cluster.

Next

With Istio installed, we are ready to deploy an application to the mesh.