How to fix etcd quota exceeded, event limit reached, API server rejecting requests in Kubernetes

KubernetesADVANCEDCRITICAL

etcd database full with Kubernetes events. Fix by cleaning up old events, increasing quota, or using separate etcd for events.

What this error means

Kubernetes events can consume most of etcd storage, causing the cluster to reach quota and rejecting new writes.

1Check etcd usage

bash

kubectl exec -n kube-system etcd-<node> -- etcdctl endpoint status

2Clean up old events

bash

kubectl delete events --all -A

3Increase etcd quota

Add --quota-backend-bytes flag to etcd.

4Configure event TTL

Set --event-ttl=1h on API server.

Consider dedicated etcd instance for events.