Update cheatsheets

pvecm

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+---
+syntax: markdown
+tags: [tldr, common]
+source: https://github.com/tldr-pages/tldr.git
+---
+# pvecm
+
+> Proxmox VE Cluster Manager.
+> More information: <https://pve.proxmox.com/pve-docs/pvecm.1.html>.
+
+- Add the current node to an existing cluster:
+
+`pvecm add {{hostname_or_ip}}`
+
+- Add a node to the cluster configuration (internal use):
+
+`pvecm addnode {{node}}`
+
+- Display the version of the cluster join API available on this node:
+
+`pvecm apiver`
+
+- Generate new cluster configuration:
+
+`pvecm create {{clustername}}`
+
+- Remove a node from the cluster configuration:
+
+`pvecm delnode {{node}}`
+
+- Display the local view of the cluster nodes:
+
+`pvecm nodes`
+
+- Display the local view of the cluster status:
+
+`pvecm status`