Lab 9: Fault Injection

To test microservices for resiliency, Istio allows us to inject delays and errors between services.

Let’s start the Lab.

1. Let’s create a VirtualService that creates 50% of 501 errors when the details service is called.

   apiVersion: networking.istio.io/v1alpha3
   kind: VirtualService
   metadata:
     name: details
   spec:
     hosts:
     - details
     http:
     - fault:
         abort:
           httpStatus: 500
           percentage:
             value: 50
       route:
       - destination:
           host: details
           subset: v1
   ...
   

   ``

   Run the following:

   kubectl apply -f ~/training/istio/samples/bookinfo/networking/fault-injection-details-v1.yaml
        
   > virtualservice.networking.istio.io/details created
   > destinationrule.networking.istio.io/details created
      
   

   ``

2. In Kiali click on the productpage (orange) box and after a short while you should see 500 errors appearing. In the right side dtail panel you will see additional information about the problem in your communication between microservices.