How to reset the circuit breaker counters in istio v1.1.1?

Question

Is there anyone know how to reset the circuit breaker counters in istio v1.1.1? During performance testing(3 weeks ago), circuit breaker was triggered, there's thunder icon shown up in Kiali graph. After that, there's no traffic, the 'thunder' icon should disappear to my understanding.

Answer 1

I might not get it correctly, but to my understanding, there are 2 things.

1. First minor one, the thunder icon in Kiali that you shared is only an indicator that there is Circuit Breaker applied to that resource. It won't actually go away unless the Circuit Breaker is deregistered. But you can choose what to display or not:

Please check the Circuit Breaker specifications you have. From Kiali home, you can go to "Istio Config" and check the Circuit Breaker specifications. It can be inside the different "DestinationRule"(outlierDetection) or "DestinationPolicy"(CircuitBreaker)

2. For the main thing:

how to reset the circuit breaker counters in istio v1.1.1?

Maybe you would want to assess your situation first with available information from Kiali.

• From the Home page you can go -> Workloads ->
• You will get detail page and can check tabs "Info", "Traffic", "Logs" and so on. You can check inbound and outbound traffic. If there is simply no request coming in, then, maybe need to check from the client of the service why the requests have stopped.

I feel you don't to do this. But unless you are completely aware and have assessed there's an issue, you can check individual Envoy Proxy stats using Kubectl pointing to your Kubernetes cluster. Istio Envoy Statistics reference.

kubectl -n {YOUR NAMESPACE} -it {THE POD NAME YOU WANT TO TEST} -c istio-proxy  -- sh -c 'curl localhost:15000/stats'

if you really want to reset:

kubectl -n {YOUR NAMESPACE} -it {THE POD NAME YOU WANT TO TEST} -c istio-proxy  -- sh -c 'curl -XPOST localhost:15000/reset_counters'