Will the cluster fail critically if one dual-link network is disabled?

[winwingmgm]

Technical Inquiry:
I would like to inquire about my server cluster consisting of 15 nodes. During the initial cluster setup, the cluster network was configured with dual networks—Link0 and Link1 (as shown in the diagram). We now need to perform maintenance on the LAN for Link1, which will require physically disconnecting Link1 on all servers, rendering it unavailable. However, Link0 will remain operational. Under these circumstances, will the entire server cluster experience any issues?

 

[winwingmgm]

The consulting module area selection is wrong. I don’t know how to delete it. I have changed it to "Proxmox Virtual Environment"

 

[SteveITS]

That’s the corosync network and it should use the additional link(s) if they are working.
https://pve.proxmox.com/pve-docs/chapter-pvecm.html#pvecm_redundancy

 

[UdoB]

Under these circumstances, will the entire server cluster experience any issues?

The point of having "two rings" is... it shouldn't.

Verify the actual status: https://forum.proxmox.com/threads/corosync-ha-cluster-wide-reboot.166596/#post-773195

PS: you only showed the shortened "192.168" twice - hopefully they are actually independent - both IP-Network and hardware wise.

Do you really believe posting non-routable, non-reachable RFC1918 addresses is a critical security violation?

 

[winwingmgm]

The point of having "two rings" is... it shouldn't.

Verify the actual status: https://forum.proxmox.com/threads/corosync-ha-cluster-wide-reboot.166596/#post-773195

PS: you only showed the shortened "192.168" twice - hopefully they are actually independent - both IP-Network and hardware wise.

Do you really believe posting non-routable, non-reachable RFC1918 addresses is a critical security violation?

My Link0 and Link1 are two physically isolated networks on different subnets. What command can I use to check whether my current Corosync is using Link0 or Link1?

 

[UdoB]

What command can I use to check whether my current Corosync is using Link0 or Link1?

Very good question

Unfortunately I haven't found an answer to this yet.