feat: adding info about stateful set (#207) #333
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| :::info vCluster Control Plane | ||
| The vCluster `my-cluster-0` pod is also known as the vCluster control plane. | ||
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| A virtual cluster is deployed as a | ||
| [StatefulSet](https://kubernetes.io/docs/concepts/workloads/controllers/statefulset/), |
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I forgot the use case of when this happens, but there are a handful of options that change the control plane pods from a statefulset to a deployment.
@FabianKramm Can you clarify those use cases?
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Also related
When deploying vCluster in HA mode, I'm getting deployment and statefulset rather than 2 statefulsets. Is this a bug or we should adjust the docs (and vcluster.yaml) have stateful set for etcd and deployment for vCluster?
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The vcluster.yaml won't change (as I've already discussed that), but more that we should adjust the docs.
In default use case it deploys a statefulSet, but there are use cases when it becomes a deployment. @Piotr1215 Can you follow up with Fabian to understand when it's statefulset vs. deployment?
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Basically whenever no local persistent storage is needed the statefulset becomes a regular deployment. This is the case for external backing stores such as external etcd or external database or if persistence is disabled.
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Thank you @FabianKramm , adjusted the description.
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Signed-off-by: Piotr Zaniewski <piotr.zaniewski@loft.sh>
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Closes DOC-207
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