<p>I am doing with k8s and Istio as service meshing. I wonder what if pod in a service A is not ready(Readiness is unhealthy), How Istio will treat this pod? Is there way i can config rule of load balance(Load balance at L3/L4 layer)?</p>

Blind
<p>You might want to check <a href="https://istio.io/latest/docs/ops/configuration/mesh/app-health-check/" rel="nofollow noreferrer">Health Checking of Istio Services</a> to check the health of your pods. As mentioned in the post, you would have to configure the containers with <a href="https://kubernetes.io/docs/tasks/configure-pod-container/configure-liveness-readiness-startup-probes/" rel="nofollow noreferrer">liveness probes</a> using kubectl before you can actually do health checking.</p>
