Xueersi Online School Tech Team
May 7, 2021 · Cloud Native
Smooth Upgrade Strategies for Cloud Native Services to Prevent 5xx Errors
This article explains why 5xx errors occur during service upgrades, describes the container and pod lifecycle in Kubernetes, and provides practical smooth‑upgrade techniques—including traffic routing, readiness probes, preStop scripts, and exec‑based entrypoints—to achieve lossless deployments for web and micro‑services.
5xx errorsPreStopReadiness Probe
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