Optimizing etcd on Slow Disks in Kubernetes
Optimizing etcd on Slow Disks in Kubernetes In Kubernetes, etcd is the central database that stores the entire cluster state. If etcd runs on slow disks, you might notice performance issues: API requests slow down, pods take longer to schedule, and sometimes the cluster feels “laggy.” Why etcd Struggles on Slow Disks etcd is very I/O-intensive. Each write goes to disk to guarantee consistency. On spinning HDDs or cheap cloud disks with poor IOPS, etcd can quickly become a bottleneck. ...