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feat: enable additional scheduling options for wasmCloud host pods #9

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merged 1 commit into from
Apr 1, 2024

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protochron
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Feature or Problem

This refactors the WasmCloudHostConfig CRD so that it has a single field (schedulingOptions) for configuring how the underlying Pods are scheduled in Kubernetes. This includes:

  • Relocating the daemonset option to this new field
  • Relocating the resources option to this new field
  • Adding a new pod_template_additions field that allows you to set any valid option in a PodSpec

Doing so allows cluster operators to do things like set node affinity and node selector rules, along with any other valid PodSpec option. The only thing that cannot be done is adding additional containers to the pod, since that is all handled by the controller. We could look at exposing that option if users want to be able to add additional sidecars.

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Tested locally in kind by setting daemonset: true and adding a node selector, both of which correctly changed the configuration of the underlying pods.

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github-actions bot commented Mar 31, 2024

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✅ No vulnerabilities or license issues or OpenSSF Scorecard issues found.

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@thomastaylor312 thomastaylor312 left a comment

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All nits, but we do need the fix in the example that @joonas called out

src/controller.rs Outdated Show resolved Hide resolved
src/controller.rs Outdated Show resolved Hide resolved
src/controller.rs Outdated Show resolved Hide resolved
This refactors the WasmCloudHostConfig CRD so that it has a single field
(`schedulingOptions`) for configuring how the underlying Pods are
scheduled in Kubernetes. This includes:
* Relocating the `daemonset` option to this new field
* Relocating the `resources` option to this new field
* Adding a new `pod_template_additions` field that allows you to set any
  valid option in a `PodSpec`

Doing so allows cluster operators to do things like set node affinity
and node selector rules, along with any other valid PodSpec option. The
only thing that cannot be done is adding additional containers to the
pod, since that is all handled by the controller. We could look at
exposing that option if users want to be able to add additional
sidecars.

Signed-off-by: Dan Norris <protochron@users.noreply.github.com>
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@thomastaylor312 all fixed. PTAL

@protochron protochron merged commit 58a9799 into main Apr 1, 2024
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@protochron protochron deleted the node_affinity branch April 1, 2024 18:33
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3 participants