Affinity Trait

Allows to constrain which nodes the integration pod(s) are eligible to be scheduled on, based on labels on the node, or with inter-pod affinity and anti-affinity, based on labels on pods that are already running on the nodes.

It’s disabled by default.

This trait is available in the following profiles: Kubernetes, Knative, OpenShift.

Configuration

Trait properties can be specified when running any integration with the CLI:

kamel run --trait affinity.[key]=[value] --trait affinity.[key2]=[value2] integration.groovy

The following configuration options are available:

Property	Type	Description
affinity.enabled	bool	Can be used to enable or disable a trait. All traits share this common property.
affinity.pod-affinity	bool	Always co-locates multiple replicas of the integration in the same node (default false).
affinity.pod-anti-affinity	bool	Never co-locates multiple replicas of the integration in the same node (default false).
affinity.node-affinity-labels	string	Defines a set of nodes the integration pod(s) are eligible to be scheduled on, based on labels on the node.
affinity.pod-affinity-labels	string	Defines a set of pods (namely those matching the label selector, relative to the given namespace) that the integration pod(s) should be co-located with.
affinity.pod-anti-affinity-labels	string	Defines a set of pods (namely those matching the label selector, relative to the given namespace) that the integration pod(s) should not be co-located with.

Property

Type

Description

affinity.enabled

bool

Can be used to enable or disable a trait. All traits share this common property.

affinity.pod-affinity

bool

Always co-locates multiple replicas of the integration in the same node (default false).

affinity.pod-anti-affinity

bool

Never co-locates multiple replicas of the integration in the same node (default false).

affinity.node-affinity-labels

string

Defines a set of nodes the integration pod(s) are eligible to be scheduled on, based on labels on the node.

affinity.pod-affinity-labels

string

Defines a set of pods (namely those matching the label selector, relative to the given namespace) that the integration pod(s) should be co-located with.

affinity.pod-anti-affinity-labels

string

Defines a set of pods (namely those matching the label selector, relative to the given namespace) that the integration pod(s) should not be co-located with.