How Kubernetes Scheduler Works
A Kubernetes cluster runs pods on multiple machines. These pods may run a variety of workloads. The kind of apps run on these pods are also quite varied. It could be as simple as a webapp, or a comple …
| Talk Title | How Kubernetes Scheduler Works |
| Speakers | Himani Agrawal (Product Engineer, Gojek) |
| Conference | Open Source Summit + ELC Europe |
| Conf Tag | |
| Location | Lyon, France |
| Date | Oct 27-Nov 1, 2019 |
| URL | Talk Page |
| Slides | Talk Slides |
| Video | |
A Kubernetes cluster runs pods on multiple machines. These pods may run a variety of workloads. The kind of apps run on these pods are also quite varied. It could be as simple as a webapp, or a complex machine learning model. It is super important that the pods for such workloads run on the worker nodes best suited for it. This job is taken care of by the scheduler.The scheduler takes into account individual and collective resource requirements, quality of service requirements, hardware/software/policy constraints, affinity and anti-affinity specifications, data locality, inter-workload interference, deadlines, and so on. A scheduler significantly impacts availability, performance, and capacity of the cluster.In this talk Himani and Iqbal will dive deeper into the internals of a typical Kubernetes scheduler and discuss how it actually works. They will discuss how the scheduler looks at various available resources and narrows down on a machine on which a pod can be scheduled.
