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followup #1850: pvecm: referencing all nodes in etc/hosts is not necessarry

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...for a cluster to work, as we can corosync can use multicast to
from the totem ring and we then can use that to communicate the other
nodes cluster IP.

Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
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Thomas Lamprecht 2018-11-13 13:25:08 +01:00
parent c15cdfba0d
commit 9a7396aa65
1 changed files with 11 additions and 4 deletions
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pvecm.adoc
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@ -92,20 +92,27 @@ Currently the cluster creation can either be done on the console (login via
`ssh`) or the API, which we have a GUI implementation for (__Datacenter -> `ssh`) or the API, which we have a GUI implementation for (__Datacenter ->
Cluster__). Cluster__).
While it's often common use to reference all other nodenames in `/etc/hosts`
with their IP this is not strictly necessary for a cluster, which normally uses
multicast, to work. It maybe useful as you then can connect from one node to
the other with SSH through the easier to remember node name.
[[pvecm_create_cluster]] [[pvecm_create_cluster]]
Create the Cluster Create the Cluster
------------------ ------------------
Login via `ssh` to the first {pve} node. Use a unique name for your cluster. Login via `ssh` to the first {pve} node. Use a unique name for your cluster.
This name cannot be changed later. The cluster name follows the same rules as node names. This name cannot be changed later. The cluster name follows the same rules as
node names.
---- ----
hp1# pvecm create CLUSTERNAME hp1# pvecm create CLUSTERNAME
---- ----
CAUTION: The cluster name is used to compute the default multicast CAUTION: The cluster name is used to compute the default multicast address.
address. Please use unique cluster names if you run more than one Please use unique cluster names if you run more than one cluster inside your
cluster inside your network. network. To avoid human confusion, it is also recommended to choose different
names even if clusters do not share the cluster network.
To check the state of your cluster use: To check the state of your cluster use: