NAME
----
-pvecm - Proxmox VE Cluster Manager
+pvecm - {pve} Cluster Manager
SYNOPSYS
--------
The {PVE} cluster manager `pvecm` is a tool to create a group of
physical servers. Such a group is called a *cluster*. We use the
http://www.corosync.org[Corosync Cluster Engine] for reliable group
-communication, and such cluster can consists of up to 32 physical nodes
+communication, and such clusters can consist of up to 32 physical nodes
(probably more, dependent on network latency).
`pvecm` can be used to create a new cluster, join nodes to a cluster,
leave the cluster, get status information and do various other cluster
-related tasks. The Proxmox Cluster file system (pmxcfs) is used to
-transparently distribute the cluster configuration to all cluster
+related tasks. The **P**rox**m**o**x** **C**luster **F**ile **S**ystem (``pmxcfs'')
+is used to transparently distribute the cluster configuration to all cluster
nodes.
Grouping nodes into a cluster has the following advantages:
* Centralized, web based management
-* Multi-master clusters: Each node can do all management task
+* Multi-master clusters: each node can do all management task
* `pmxcfs`: database-driven file system for storing configuration files,
replicated in real-time on all nodes using `corosync`.
-* Easy migration of Virtual Machines and Containers between physical
+* Easy migration of virtual machines and containers between physical
hosts
* Fast deployment
For `IP-ADDRESS-CLUSTER` use the IP from an existing cluster node.
-CAUTION: A new node cannot hold any VMยดs, because you would get
+CAUTION: A new node cannot hold any VMs, because you would get
conflicts about identical VM IDs. Also, all existing configuration in
`/etc/pve` is overwritten when you join a new node to the cluster. To
workaround, use `vzdump` to backup and restore to a different VMID after
# pvecm nodes
-.List Nodes in a Cluster
+.List nodes in a cluster
----
hp2# pvecm nodes
If, for whatever reason, you want that this server joins the same
cluster again, you have to
-* reinstall pve on it from scratch
+* reinstall {pve} on it from scratch
* then join it, as explained in the previous section.
In case of network partitioning, state changes requires that a
majority of nodes are online. The cluster switches to read-only mode
-if it loose quorum.
+if it loses quorum.
NOTE: {pve} assigns a single vote to each node by default.