Based on customer feedback, we’ve now disabled posting AWS Node Termination Handler (NTH) notifications to Slack by default. The NTH is responsible for reacting to node state changes, by properly draining a node for example when a Spot Instance interuption is received.
Initially we enabled informative notifications if such events occur, however these turn out to be quite noisy and not very helpful in general as they indicate expected behavior. Instead we’ve enabled NTH to emit Kubernetes Events, accessible through Grafana Loki when needed for debugging purposes.
These changes have already been rolled out everywhere, there’s no action from you to take. However if you’d like to enable these notifications again (you can choose the Slack channel), please contact us.