Cluster and shared storage on the same network

[Silviu Dobre]

Hello,

Currently I have 3 nodes in a cluster with only 2 eth ports available (private net and public net).

I am running the cluster and shared storage on the private net. I am using freenas with nfs exports on the storage server.
I saw in the docs that this is a no-no and cluster network should be on separate network. This is not possible for me due to the 2 eth ports available on each node.


What are the implications of this and what should I worry about? Should I run the cluster on the public network.

Thank You

 

[wolfgang]

Hi,

the problem is that the cluster communication will not reliable and you have a flapping corosync.
In combination with HA you get fenced.

 

[Silviu Dobre]

Hi,

I am not using HA. I will see how this works over time.