feat: allow setting the cluster DNS domain #3362
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We use cluster.local by default to speed up DNS resolution, but this doesn't work in clusters with a custom domain. The Prometheus remote write domain doesn't use the suffix because there isn't any way to modify it from values.yaml other than manually.
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swiatekm-sumo
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andrzej-stencel
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Oct 27, 2023
sumo-drosiek
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It's possible to change the domain from the default
cluster.localusing KOPS or Kubespray, or just kubeadm directly. In that case, our endpoints won't resolve correctly. There's reasons to use the fully qualified names whenever possible, so I'm adding a setting for the cluster DNS domain for users who actually set a custom one.There's no straightforward way to replace this for Prometheus remote write urls, so I've just removed the suffix completely. Given that Prometheus is slowly on the way out and not the default in v4, this should be fine.
See for reference on why we bother with this: #2502 kubernetes/kubernetes#56903 (comment)
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