different networks for VMs and storage

S

smbtech

New Member
Sep 24, 2014
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Hi,

I have configured a two-node cluster with DRBD shared local storage following the documentation in the wiki. I have also configured two separate networks, one for accessing the VMs over the LAN, and a 2nd network, for which I want DRBD communication and storage traffic to go. My question is, how does one make sure that this is indeed working. I have a feeling that when I migrate VMs between the two nodes, traffic is passing thru the VM network, and not thru the one I dedicated for storage.

Any insight would be highly appreciated!
thx.
/DL
 
hello

DRBD traffic (also live migration) will pass through the interface's ip that you have configured on drbd's resource file (e.g /etc/drbd.d/r0.res).
To be sure use iptraf utility at the same time that you do live migration.
Cluster traffic will pass through ip/nic that you have set on /etc/hosts file.
 
@acidrop: Thx much! r0.res, completely forgot to look there.... At least I can see that the config is correct, and that DRBD traffic should flow thru the "storage" network. I'll play with this tomorrow, and chk iptraf.
thx again!
/DL
 
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