karpenter_build_instance_families

Description

The karpenter_build_instance_families parameter specifies which EC2 instance families Karpenter can use when provisioning build nodes.

Default Value

The default value is empty (falls back to karpenter_instance_families).

Setting the Parameter

$ convox rack params set karpenter_build_instance_families=c5,c6i -r rackName
Updating parameters... OK

Additional Information

• Validation: Comma-separated lowercase alphanumeric values. On a Rack with karpenter_enabled=true, convox rack params set at 3.25.3 or newer also rejects a list in which no family matches the build architecture, which comes from build_node_type and falls back to node_type. Setting karpenter_build_instance_families=c7g while build_node_type is an x86 type fails with karpenter_build_instance_families (c7g) has no family matching the build_node_type architecture (amd64); Karpenter could not provision any matching node.
• The build NodePool is only created when build_node_enabled=true.

See Also

• Karpenter for the full Karpenter configuration reference
• karpenter_instance_families
• karpenter_build_instance_sizes