istio upgrade가 필요한 경우, 아래와 같이 진행 가능하다. version 확인 ➜ ~ istioctl version client version: 1.17.1 control plane version: 1.14.1 data plane version: 1.14.1 (1 proxies) https://istio.io/latest/docs/setup/upgrade/in-place/ upgrade 사전 확인 ➜ ~ istioctl x precheck ✔ No issues found when checking the cluster. Istio is safe to install or upgrade! To get started, check out https://istio.io/latest/docs/setup/g..