Multicast with multi-NIC FOG server

[Sebastian Roth]

@benjamind said in Multicast with multi-NIC FOG server:

I have change the interface from ens18 to ens19 in FOG Configuration => FOG Settings => Multicast Settings but when i start a deployement task it still uses the “main” interface as i hace see it in the /opt/fog/log/multicast.log :

You need to restart the service to have it use the new setting: systemctl restart FOGMulticastManager

[EduardoTSeoane]

@benjamind @george1421

I’m using a master and nodes configuration with a lot of multihomed locations (140 as goal) with between 2 and 9 VLANS for node.

I solve this problem for my custom config with the procedure that i wrote on this link https://forums.fogproject.org/topic/13387/unable-to-change-multicast-nic/14 maybe it helps you.

It works for me, but i’m using a custom multihomed nodes installation with a beta customized location plugin to do all tasks locally on the VLAN.

I use custom modifications because if i try the next procedure i can get more than 350 locations/nodes.

Using that procedure as basis i think:

If you have a single multihomed master without nodes, maybe you can try to configure a StorageGroup for each VLAN, a StorageNode for each NIC and, using this data, a location for each VLAN and then configure pc’s on his VLAN location.

“TAKE A LOT OF CARE ON DISABLE REPLICATION!!!.”

If you need the Image replication service you can use a false user/password pair to avoid it or try to don’t assign images/snapins to that StorageGroups.

Reason to think that. MulticastManager also use management node ip to select the multicast iface. I think that I saw this on my experiments. Maybe @Sebastian-Roth can confirm it.

Try it at your own risk.

Plz wrote the test results.

[benjamind]

@george1421

I also have changed the storage node IP.

I used to deploy via multicast over VLANs but our new Cisco Merka routers can’t do this unless there are stacked. Mines are in two different places.

@Sebastian-Roth

I have restarted the service and reboot the server with no effects. FOG still uses ens18 for multicast.

@EduardoTSeoane

The link you have provided seems to be broken.

[EduardoTSeoane]

@benjamind https://forums.fogproject.org/topic/13387/unable-to-change-multicast-nic

[Sebastian Roth]

@EduardoTSeoane Ahhhhh, thanks for pointing this out! Funny I didn’t remember that one. Usually I do! Must have been a quite stressful part of the year back then.

[Sebastian Roth]

@benjamind Is there anything we can do for you? You might want to post the full output of the command ip a s here so we know which interfaces you have and maybe try and find a solution.

[benjamind]

Thank you @Sebastian-Roth,

I have deployed several FOG for each of my VLANs.

If i understand the link provided by @EduardoTSeoane , i have to change the Storage Node’s ip also ?

[Sebastian Roth]

@benjamind May I still ask you to post the full output of the command ip a s. I don’t like to do all the guesswork.

[EduardoTSeoane]

@benjamind It world for me bit i hace a little bit soecial case

[benjamind]

Hi @Sebastian-Roth and @EduardoTSeoane,

Thank you for your answers.

@Sebastian-Roth said in Multicast with multi-NIC FOG server:

@benjamind May I still ask you to post the full output of the command ip a s. I don’t like to do all the guesswork.

Sorry, but i have removed the virtual NIC to put the server directly in the subnet of the machines.