CHPA

   

Declarative Cron-based Horizontal Pod Autoscaler for Kubernetes

Features

Trigger different HPAs with cron jobs

• CRD for Kubernetes called cronhpa or chpa. See yaml/ directory.
• Specify a conventional cron or a cron with seconds.
• Specify different CPU load, min replicas and max replicas to be applied to a named horizontal pod autoscaler.
• Deployment replicas is updated to min replicas in the CRD.
• All namespaces are searched for entries matching the CRD allowing multiple teams to make use of them.

Roadmap

Version 1

• Docs (running, deployment and production)
• Yaml for Kubernetes deployment
• HA: interim strategy involving redundant imperative approach
• HA: Integration with etcd to allow for HA deployment and locking when carrying out jobs
• Investigate different concurrency model for increased reliability in various failure cases

Version 2

• More options around how to kube conf - using in-cluster authentication, RBAC instead
• Investigate using selectors to pick HPAs - Kevin
• Investigate approaching as an Operator
• Investigate pointing to the official HPA API client struct
• Exclude namespaces