Packed: PreferredDuringSchedulingIgnoredDuringExecution PodAffinity with a HostName topology#397
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markmandel merged 1 commit intoagones-dev:masterfrom Oct 25, 2018
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LGTM, just a small typo
docs/scheduling_autoscaling.md
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| #### Pod Scheduling Strategy | ||
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| Under the "Packed" strategy, Pods will be scheduled using the [`PodAffinity`](https://kubernetes.io/docs/concepts/configuration/assign-pod-node/#inter-pod-affinity-and-anti-affinity-beta-feature) | ||
| with a `preferredDuringSchedulingIgnoredDuringExecution` afiinity with [hostname](https://kubernetes.io/docs/concepts/configuration/assign-pod-node/#interlude-built-in-node-labels) |
…inity with a HostName topology. This does a pretty decent job of grouping together GameServer Pods. It does tend to distribute more widely when large groups of GameServer Pods get created, but it's worth experimenting with the first, before going the more risky route of a custom scheduler (in which we've already found some issues). We may also find as GameServers shut down at the end of sessions, they start to group together when they reschedule, as at lower load, the scheduler tends to do a better job of packing. Working towards agones-dev#368
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This does a pretty decent job of grouping together GameServer Pods. It does tend to distribute more widely when large groups of GameServer Pods get created, but it's worth experimenting with the first, before going the more risky route of a custom scheduler (in which we've already found some issues).
We may also find as GameServers shut down at the end of sessions, they start to group together when they reschedule, as at lower load, the scheduler tends to do a better job of packing.
Working towards #368