OpenShift Control Plane Sizing Guidelines (based on etcd size)
Updated -
Sizing Recommendations
The minimum requirement for control plane nodes is 4 vCPU and 16 GiB of RAM. This is generally sufficient for clusters with an etcd database size up to approximately 250 MiB and low load.
As the etcd database grows, or the load on the cluster increases, it is recommended to scale the control plane nodes proactively to maintain performance and stability.
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