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Flexible Engine template#

Add-on autoscaler specifications - Autoscaling CCE#

Note: Default values for autoscaler configuration are indicated between parentheses

Specifications :

  • Idle Time (min) (5) : X Time for which a node must remain idle before it is removed from the cluster.

  • Resource Usage (40) : X Resource usage (in percentage) that a node must reach before it can be removed from the cluster.

  • Scaledown Delay After Scaleup (5) : X (min) The time after scale-up that the scale-down evaluation will resume.

  • Scaledown Delay After Node Deletion (5) : X (min) The time after node deletion that the scale-down evaluation will resume.

  • Scaledown Delay After Failure (3) : X (min) The time after a scale-down failure that the scale-down evaluation will resume.

  • Max empty bulk delete (10) : X Maximum number of empty nodes that can be deleted at the same time.

  • Node Recheck Timeout (5) : X (min) The timeout before autoscaler checks again the node that could not be previously removed.

Node Pool#

A node pool is a group of nodes within a cluster that all have the same configuration.

In CCE, the nodes configured during cluster creation are grouped into the default node pool. The default node pool is named DefaultPool and cannot be edited, deleted, or migrated. In order to implement cluster autoscaling, a new Node Pool must be defined.

  • Name (-nodepool-autoscaler-) : X Name of the node pool.

  • Node (0) : X Number of node to be created after the creation of the node pool

  • Maximum Nodes (10) : X Maximum of node that could be deployed in this node pool.

  • Minimum Nodes (0) : X Minimum nodes running that will stay in the node pool, if 1 there will be always 1 node running in the node pool.

  • Priority (0) : X Should be only used if you have multiple node pool for one cluster and have some AZ deployment strategy for exemple.

  • Scale-In Cooling Interval (0 minutes) : X Time between two Scale-in operation.

  • AZ (Depends of the cluster if AZ1 or AZ2 or AZ3 or random) : X

  • Specifications flavor (can be different from other nodes)) : X

  • OS (can be different from other nodes) : X System Disk (40) : X Can't be < 40.

  • Data Disk (100) : X Can't be < 100.

  • Key pair : depends of the cluster