Loki instances using memcached for caching may emit excessive warning or error logs when the configured`memcached_client` service port name does not match the actual Kubernetes service port. This does not cause a crash or failure, but it results in noisy logs and ineffective caching behavior.
A Kubernetes worker node has entered the **NotReady** state.
Pods that mount NFS volumes and set `securityContext.fsGroup` still have the directory owned by `root\:root`. The kubelet does not chown the share, so non\-root containers fail with \"Permission denied\".
CoreDNS deployment is unavailable or has no ready endpoints, indicating an imminent cluster\-wide DNS outage.