#7133 Speed up sandbox envoy proxy startup by ~40s Pull request opened by pingsutw Summary • Add

wait-for-dns

init container to the envoy proxy deployment that blocks until CoreDNS is available, preventing a ~40s DNS resolution timeout during envoy cluster initialization • Add

dns_refresh_rate

(1s) and

dns_failure_refresh_rate

(1s base, 5s max) to all envoy upstream clusters for faster recovery • Tune readiness probe (

initialDelaySeconds: 1

,

periodSeconds: 3

) and liveness probe (

initialDelaySeconds: 30

,

periodSeconds: 5

) for faster detection Before: Envoy blocked ~40s on DNS resolution timeout → proxy pod ready at ~44s After: Envoy initializes in <1s after CoreDNS is up → proxy pod ready at ~30s Test plan •

make sandbox-run

starts successfully •

make sandbox-stop

stops cleanly • Verified envoy logs show instant cluster initialization (

cm init: all clusters initialized

within milliseconds of

starting main dispatch loop

) • All 7 pods reach Ready state •

main

• #6583 • Speed up sandbox envoy proxy startup by ~40s 👈 flyteorg/flyte