Istio

Istio Setup

Istio is a power traffic mesh management tool. It also provides an ingress gateway for the Kubernetes cluster.

Installation

Operator Setup

• The following setup can be done from the client machine. This installs Istio Operator, Istio Service Mesh, Istio Ingressgateway components.

• From kubernetes/istio directory, run;

  istioctl operator init
  kubectl apply -f istio-operator.yaml

  • Wait for istiod and ingressgateway pods to start.

• Or, for Rancher cluster, run:

  kubectl apply -f istio-ef-spdy-upgrade.yaml

Namespace Setup

(Skip this section for Rancher cluster)

Set up an Istio gateway on each namespace for a domain. This assumes that the namespace (and relevant Rancher project) are already created (you may use the Rancher console to create a namespace or via command line kubectl)

• Edit and run this to define the variables:

  export NS=dev
  export WILDCARD_HOSTNAME='*.dev.your.org'

• From kubernetes/istio directory, run the following:

  envsubst < istio-gateway.yaml | kubectl apply -f -