podscale-controller

PodScale Controller

PodScale Controller manages PodScale resources lifecycle, dealing with their creation and deletion.

PodScale lifecyle

Once a new ServiceLevelAgreement is deployed into a namespace, the controller will try to find a set of Services compatible with the serviceSelector and will create a new PodScale for each Pod. The match is currently done by setting the MatchLabels field inside the Selector but a further analysis has to be done regarding the Selector strategy since the MatchExpressions will not be used.
After the PodScale creation, the controller will try to keep the set of PodScale up to date with Pod resources, handling changes in the number of replicas and Pod deletions. What is not covered at the moment is specified in this [issue] (https://github.com/lterrac/system-autoscaler/issues/2).
When the ServiceLevelAgreement is deleted from the namespace, all the PodScale resources generated from it will be also deleted, leaving the namespace as it was before introducing the Agreement.