The deployment now carries a checksum/config annotation over the rendered
ConfigMap, so a changed routing table produces a new pod template and a
controlled rollout.
Without it a mapping change was inert but looked successful: the file is
mounted with subPath (kubelet never refreshes those in a running container)
and mc-router reads ROUTES_CONFIG only at startup. That combination caused the
minecraft-server stage-3 outage - the ConfigMap pointed at the renamed
services, the running router kept proxying to the old ones, and the pod stayed
Ready throughout.
Major bump: runtime behaviour changes. A mapping change now costs a router
restart (~4.5 s in k3d, so roughly 17-19 s in the real cluster) during which
clients cannot connect. That restart is what makes the change take effect at
all.
Refs #82.
jklein
e4b3c06674