Large Cluster Threshold

If the number of nodes in a cluster is greater than the value of this parameter, this is a large cluster.

The node controller also checks the percentage of unhealthy nodes (whose Ready status is Unknown or False) in the AZ to determine whether the current AZ is healthy.

1. If the AZ is healthy, the node controller evicts nodes based on node-eviction-rate.
2. If the AZ is unhealthy and the cluster is small (the number of nodes in the cluster has not exceeded the large cluster threshold), secondary-node-eviction-rate is implicitly reset to 0, and evictions are stopped.
3. If the AZ is unhealthy and the cluster is large (the number of nodes in the cluster exceeds the large cluster threshold), the eviction rate is reduced to secondary-node-eviction-rate.

Value Range

Integers greater than or equal to 1

Default Value

50

Modifiable

Yes

Scope

CCE standard and CCE Turbo clusters

Suggestions

Unless otherwise specified, keep the default settings.