[pve-devel] [PATCH docs] cluster: document multilple clusters in same network

Fabian Grünbichler f.gruenbichler at proxmox.com
Thu Jan 18 08:58:12 CET 2018


nice addition, this does get asked from time to time and is a useful
info to have especially when testing with virtual clusters.

small nits inline.

On Wed, Jan 17, 2018 at 03:54:58PM +0100, Thomas Lamprecht wrote:
> Signed-off-by: Thomas Lamprecht <t.lamprecht at proxmox.com>
> ---
>  pvecm.adoc | 13 +++++++++++++
>  1 file changed, 13 insertions(+)
> 
> diff --git a/pvecm.adoc b/pvecm.adoc
> index 36d18c2..63e220f 100644
> --- a/pvecm.adoc
> +++ b/pvecm.adoc
> @@ -104,6 +104,19 @@ To check the state of your cluster use:
>  
>   hp1# pvecm status
>  
> +Multiple Clusters In Same Network
> +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> +
> +You can create multiple clusters in the same physical or logical network. But,

s/You can/It is possible to

> +for this to work they all must have an unique cluster name, as its the
> +identifier of the clusters multicast group address. If this prerequisite is
> +fulfilled the different clusters won't interfere with each other.

Each cluster must have a unique name, which is used to generate the
cluster's multicast group address. As long as no duplicate cluster names
are configured in one network segement, the different..

> +
> +If multiple clusters operate in a single network it may be beneficial to setup
> +an IGMP querier and enable IGMP Snooping in said network. This may reduce the
> +load of the network significantly because multicast packages get only delivered

s/packages/packets/
s/get/are/

> +to endpoints of the respective member nodes.
> +
>  
>  Adding Nodes to the Cluster
>  ---------------------------
> -- 
> 2.11.0
> 
> 
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