Policy

Before Start

You should have NO virtualservice nor destinationrule (in tutorial namespace) kubectl get virtualservice kubectl get destinationrule if so run:

./scripts/clean.sh tutorial

Rate Limiting (Not working yet in 1.1)

The Rate Limiting rules take some time to be applied and reflected. Be patient here!

Here we will limit the number of concurrent requests into recommendation v2

Now apply the rate limit handler

kubectl create -f istiofiles/recommendation_rate_limit_handler.yml

Now setup the requestcount quota

kubectl create -f istiofiles/rate_limit_rule.yml

Throw some requests at customer:

./scripts/run.sh http://istio-ingressgateway-istio-system.$(minishift ip).nip.io/customer

You should see some 429 errors:

customer => preference => recommendation v2 from '2819441432-f4ls5': 108
customer => preference => recommendation v1 from '99634814-d2z2t': 1932
customer => preference => recommendation v2 from '2819441432-f4ls5': 109
customer => preference => recommendation v1 from '99634814-d2z2t': 1933
customer => 503 preference => 429 RESOURCE_EXHAUSTED:Quota is exhausted for: RequestCount
customer => preference => recommendation v1 from '99634814-d2z2t': 1934
customer => preference => recommendation v2 from '2819441432-f4ls5': 110
customer => preference => recommendation v1 from '99634814-d2z2t': 1935
customer => 503 preference => 429 RESOURCE_EXHAUSTED:Quota is exhausted for: RequestCount
customer => preference => recommendation v1 from '99634814-d2z2t': 1936
customer => preference => recommendation v2 from '2819441432-f4ls5': 111
customer => preference => recommendation v1 from '99634814-d2z2t': 1937
customer => 503 preference => 429 RESOURCE_EXHAUSTED:Quota is exhausted for: RequestCount
customer => preference => recommendation v1 from '99634814-d2z2t': 1938
customer => preference => recommendation v2 from '2819441432-f4ls5': 112

Clean up

kubectl delete -f istiofiles/rate_limit_rule.yml

kubectl delete -f istiofiles/recommendation_rate_limit_handler.yml

or you can run:

./scripts/clean.sh tutorial