The service manager ticked green. Alex held his breath.
kubectl get nodes – all three servers showed Ready . The agents reconnected. The microservices started responding. The dashboard lit up. k3s downgrade version
Then came the staging environment. Staging mirrored production—three server nodes, two agents, a PostgreSQL database for Rancher, and a dozen critical microservices. The service manager ticked green
The cluster was split-brained.
The upgrade script ran smoothly. curl -sfL https://get.k3s.io | sh -s - --channel=latest . The single-node development cluster in the ‘sandbox’ environment restarted in 47 seconds. Alex smiled, typed kubectl get nodes , and saw Ready . a PostgreSQL database for Rancher