monitoring-quota requests.memory sat at 89% (18.2/20Gi), tripping the
ResourceQuota>80% WARN. Root cause was over-provisioned requests, not real
usage: loki requested 3Gi but its VPA upperBound is 364Mi and actual ~315Mi.
prometheus's 4Gi is legitimately required (2Gi tmpfs WAL shares the cgroup;
OOMs at 3Gi during WAL replay) so it stays; grafana's main container is
already 512Mi. Trimmed loki to 1Gi request (~3x its observed ceiling; 4Gi
Burstable limit preserves query-spike headroom) -> quota 78.8%, clears the
WARN. NOTE: alloy DaemonSet (562Mi/node) grows with node count, so revisit
(bump the 20Gi quota) as the cluster expands.
dd2a8e640f