Feature gates

Feature gates are a set of key=value pairs that describe Kubernetes features. You can turn these features on or off using the --feature-gates command line flag on each Kubernetes component.

Stuff you wanna know:

1. Each feature gate is designed for enabling/disabling a specific feature.
2. Each Kubernetes component lets you enable or disable a set of feature gates that are relevant to that component.
3. You can use the  -h flag to see a full set of feature gates for all components.
4. To set feature gates for a component, such as kubelet, use the --feature-gates flag assigned to a list of feature pairs.
5. A feature can be in Alpha, Beta or GA stage.

More stuff:

• Docs – Feature gates
• Feature stages
• Feature gates (Google Kubernetes Engine)
• Understanding feature gates (Red Hat OpenShift)