Traffic management with Istio in Kubernetes - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to create a VirtualService that routes all traffic to the 'v1' version of the service.

Kubernetes

apiVersion: networking.istio.io/v1alpha3
kind: VirtualService
metadata:
  name: my-service
spec:
  hosts:
  - my-service
  http:
  - route:
    - destination:
        host: my-service
        subset: [1]

Drag options to blanks, or click blank then click option'

Av1

Bv2

Cv3

Dlatest

Attempts:

3 left

💡 Hint

Common Mistakes

Choosing a version that is not defined in the DestinationRule

Using 'latest' which is not a valid subset

The subset 'v1' directs traffic to version 1 of the service as defined in DestinationRule.

2fill in blank

medium

Complete the code to define a DestinationRule that sets the subset 'v2' with the label 'version: v2'.

Kubernetes

apiVersion: networking.istio.io/v1alpha3
kind: DestinationRule
metadata:
  name: my-service
spec:
  host: my-service
  subsets:
  - name: v2
    labels:
      [1]: v2

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Aapp

Bversion

Cenv

Dtier

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'app' or 'env' which are not used for version subsets

Leaving the label key empty

The label key 'version' is used to define subsets for traffic routing in Istio.

3fill in blank

hard

Fix the error in the VirtualService to split traffic 80% to 'v1' and 20% to 'v2'.

Kubernetes

apiVersion: networking.istio.io/v1alpha3
kind: VirtualService
metadata:
  name: my-service
spec:
  hosts:
  - my-service
  http:
  - route:
    - destination:
        host: my-service
        subset: v1
      weight: [1]
    - destination:
        host: my-service
        subset: v2
      weight: 20

Drag options to blanks, or click blank then click option'

A20

B50

C80

D100

Attempts:

3 left

💡 Hint

Common Mistakes

Setting weight to 20 which duplicates 'v2' weight

Setting weight to 100 which sends all traffic to 'v1'

The weight for 'v1' should be 80 to split traffic 80% to 'v1' and 20% to 'v2'.

4fill in blank

hard

Fill both blanks to create a Gateway that listens on port 80 for HTTP traffic.

Kubernetes

apiVersion: networking.istio.io/v1alpha3
kind: Gateway
metadata:
  name: my-gateway
spec:
  selector:
    istio: ingressgateway
  servers:
  - port:
      number: [1]
      name: http
      protocol: [2]
    hosts:
    - "*"

Drag options to blanks, or click blank then click option'

A80

B443

CHTTP

DHTTPS

Attempts:

3 left

💡 Hint

Common Mistakes

Using port 443 which is for HTTPS

Using protocol 'HTTPS' when port is 80

The Gateway listens on port 80 with protocol HTTP for incoming web traffic.

5fill in blank

hard

Fill all three blanks to create a VirtualService that uses the Gateway 'my-gateway' and routes traffic to subset 'v1' of 'my-service'.

Kubernetes

apiVersion: networking.istio.io/v1alpha3
kind: VirtualService
metadata:
  name: my-service
spec:
  hosts:
  - my-service
  gateways:
  - [1]
  http:
  - route:
    - destination:
        host: [2]
        subset: [3]

Drag options to blanks, or click blank then click option'

Amy-gateway

Bmy-service

Cv1

Ddefault

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'default' as subset which is not defined

Using wrong gateway or host names

The VirtualService uses the Gateway named 'my-gateway', routes to host 'my-service' and subset 'v1'.