BEL provides external workload management for
Linkerd in the form of a
Kubernetes controller and a proxy harness daemon. The controller runs on the
cluster and allows for automated ExternalWorkload lifecycle and configuration
management. This is achieved with the use of an ExternalGroup resource which
defines a template for creating ExternalWorkload resources.
spec.template
Field
Description
metadata.annotation
Annotations that will be present on the created resource.
metadata.labels
Labels that will be present on the created resource.
ports
A list of ports that the workload exposes.
probes
A list of probes that the harness uses to determine and report the health of the workload (currently a max of 1 probe is supported).
spec.template.port
Field
Description
name
Optional name for the port. Each named port can be referred to by services.
port
The numeric port.
protocol.ports
Protocol exposed by the port. Must be UDP or TCP. Defaults to TCP.
spec.template.probe
Field
Description
failureThreshold
Amount of consecutive failures before probe reports a liveness failure (defaults to 3).
successThreshold
Minimum consecutive successes for a probe to be considered successful after it has failed (defaults to 1).
initialDelaySeconds
Initial delay before probe will be triggered (defaults to 0).
timeoutSeconds
Number of seconds after which a probe times out (defaults to 1).
