The snapshot-controller (1,059 restarts), the CNPG operator and Envoy
Gateway restart whenever a lease renewal takes more than 10 seconds,
which happens when heavy writes stall dqlite on the node's SSD. Raise
lease duration, renew deadline and retry period from 15s/10s/2s to
60s/40s/5s so they ride out stalls of up to ~40 seconds. With one
replica, or a standby, a slower takeover costs nothing here.
Ruben Hensen
858904384c