mikkeloscar / kube-sigterm-test

Test graceful termination in Kubernetes

Tests were run using this deployment, service, and ingress.

Steps:

• Made sure two pods were running.
• Generated traffic

  $ ab -n 10000 -c 20 https://myhost.example.org/
  

• Deleted one of the pods with kubectl delete pod <pod-name>

When keep-alive connections are allowed after SIGTERM

Active keep-alive connections will stay active until termination. New connections are not established after the SIGTERM but requests are still incomming on the active connections.

keep_alive_enabled.log

When keep-alive connections are disabled after SIGTERM

keep-alive connections are closed and no new connections are established after the SIGTERM.

keep_alive_disabled_after_sigterm.log