Runbook

Istio Traffic Routing Misconfiguration Incident

Overview

This incident type involves a misconfiguration in the Istio traffic routing. Istio is an open-source service mesh that provides a way to connect, manage, and secure microservices. A misconfiguration in the Istio traffic routing can cause issues with the routing of traffic between microservices, leading to service disruptions, outages, and performance degradation. The misconfiguration can occur due to human error, incorrect configuration settings, or misaligned policies. Identifying and resolving this incident requires analyzing the Istio configuration, identifying the misconfiguration, and taking corrective actions.

Parameters

Debug

Check if Istio is installed

Check if the Istio control plane is healthy

Check the configuration of the Istio ingress gateway

Check the Istio VirtualServices and DestinationRules

Check the Kubernetes Services and Endpoints

Check the Kubernetes Ingress resource, if used

Check the logs of the Istio sidecar containers

Repair

Check the Istio traffic routing configuration for any errors or inconsistencies. Verify that the routing rules are correctly defined and applied to the relevant services and workloads.

Update the traffic routing rules to correct any misconfigurations. This may involve modifying the routing rules, updating the service definitions, or changing the networking configuration.

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