Workloads

A Workload contains information about which tasks should be performed during the preDeployment as well as the postDeployment phase of a deployment. In its state it keeps track of the currently active Workload Instances, which are responsible for doing those checks for a particular instance of a Deployment/StatefulSet/ReplicaSet (e.g. a Deployment of a certain version).

Keptn Workload Instance

A Workload Instance is responsible for executing the pre- and post deployment checks of a workload. In its state, it keeps track of the current status of all checks, as well as the overall state of the Pre Deployment phase, which can be used by the scheduler to tell that a pod can be allowed to be placed on a node. Workload Instances have a reference to the respective Deployment/StatefulSet/ReplicaSet, to check if it has reached the desired state. If it detects that the referenced object has reached its desired state (e.g. all pods of a deployment are up and running), it will be able to tell that a PostDeploymentCheck can be triggered.