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cluster join: mention that storage config from cluster is inherited

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and what to do about it. It's a rather common topic in forum threads.

Suggested in the community forum:
https://forum.proxmox.com/threads/118492/post-513743

Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
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Fiona Ebner 2022-11-30 15:09:34 +01:00 committed by Thomas Lamprecht
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pvecm.adoc
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@ -172,11 +172,14 @@ infrastructure for bigger clusters.
Adding Nodes to the Cluster Adding Nodes to the Cluster
--------------------------- ---------------------------
CAUTION: A node that is about to be added to the cluster cannot hold any guests. CAUTION: All existing configuration in `/etc/pve` is overwritten when joining a
All existing configuration in `/etc/pve` is overwritten when joining a cluster, cluster. In particular, a joining node cannot hold any guests, since guest IDs
since guest IDs could otherwise conflict. As a workaround, you can create a could otherwise conflict, and the node will inherit the cluster's storage
backup of the guest (`vzdump`) and restore it under a different ID, after the configuration. To join a node with existing guest, as a workaround, you can
node has been added to the cluster. create a backup of each guest (using `vzdump`) and restore it under a different
ID after joining. If the node's storage layout differs, you will need to re-add
the node's storages, and adapt each storage's node restriction to reflect on
which nodes the storage is actually available.
Join Node to Cluster via GUI Join Node to Cluster via GUI
~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~