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Istio Traffic Management Checklist: Routing, Retries, and Circuit Breaking

How to configure traffic management policies in Istio so your services can do canary releases, retry transient failures, and shed load when a downstream service goes bad. Covers VirtualService, DestinationRule, retries, timeouts, circuit breakers, and outlier detection.

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Service MeshIntermediate

Istio Traffic Management Checklist: Routing, Retries, and Circuit Breaking

How to configure traffic management policies in Istio so your services can do canary releases, retry transient failures, and shed load when a downstream service goes bad. Covers VirtualService, DestinationRule, retries, timeouts, circuit breakers, and outlier detection.

60-90 minutes
13 items
istioservice-meshtraffic-managementkubernetesresilience
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Install Istio with a profile that fits your cluster

Critical

Label namespaces for sidecar injection, never the whole cluster

Critical

Define DestinationRule subsets before any routing rules

Critical

Set an explicit timeout on every VirtualService route

Critical

Configure retries with retryOn, attempts, and perTryTimeout

Critical

Set connection pool limits as your circuit breaker

Critical

Enable outlier detection to evict bad pods automatically

Critical

Roll out new versions with weighted routing

Use header-based routing to test in prod safely

Mirror traffic to validate v2 without serving its responses

Inject faults to test that retries and breakers actually work

Run istioctl analyze before applying any config

Critical

Watch the right metrics so you know when policies fire

Critical