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Did you also set the

System Managed Components Node Selector

? https://longhorn.io/docs/1.2.2/advanced-resources/deploy/node-selector/#setting-up-node-selector-after-longhorn-has-been-installed

Yes I did, but still not working. I am on the latest version (1.3.2). Our deployment is using

kubectl

, So I have been following the docs, the pages that seemed most relevant are this https://longhorn.io/docs/1.3.2/advanced-resources/deploy/taint-toleration/ and this https://longhorn.io/docs/1.3.2/advanced-resources/deploy/customizing-default-settings/#using-the-longhorn-deployment-yaml-file. I have setup on the ConfigMap the Node selector for system components, but still not able to get it working. I was initially thinking it was a memory/cpu allocation issue, but it is not.

You mean the related components (like attacher/provisioner/resizer rather than the plugin) do not apply the tolerations you set? To add the tolerations for this kind of System Managed Components (components that are dynamically deployed by longhorn manager after the installation), I would recommend to modify the setting mentioned in the doc rather than directly editing the ConfigMap

longhorn-default-setting

You are correct about the components giving me trouble. By the setting mentioned, do you mean the System Managed Components Node Selector setting on the Longhorn UI?