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Thanks for the reply. Yes, the problem persists after stop/start. I tried to run it multiple times and the results were similar. I run only 3 node cluster with 2 osds per host. Drives are Intel S4500. But I dont know if this is relevant to my problem.

Hi all, I'm facing a strange problem. I'm using latest Proxmox with Ceph storage backend (SSD only), 10Gbit network, KVM virtualization, CentOS in guest. When I create a fresh VM with 10 GB attached Ceph storage (cache disabled, virtio drivers), I'm getting roughly these speeds in fio...

Hi, When I try to enable built-in firewall, everything seems to be working, but then are randomly some connections to proxmox node dropped. (VM seems unaffected, but they do not have "centralized" firewall enabled) It does not depends on the number of firewall rules or mode (default DROP or...

Thank you for your replies, they helped me to resolve the problem. It was the switch. Apparently there is a function that links MAC address to the physical port and does not allow to move the MAC to different port. It is called port security and must be switched off for all Proxmox HN ports.

Yes, they are able to ping each other through vmbr0 (public IP addresses). Unfortunately, no. When i do a clean VM shutdown on HN2, migrate the VM on HN1 and power it on, network interfaces bridged to vmbr0 do not work. Connection through vmbr1 still works though. I have removed all custom...

No, I do not use any kind of hardware or software firewall at this moment. The whole proxmox installation is clean with no manual edit (except of the network interface renaming, which was useless :)).

I have vmbr0 (external) and vmbr1 (internal) interface on all cluster nodes. Names are exactly the same. Below I attached screen from hardware settings of VM. net0 and net1 are interfaces created for example on HN1. After I move the VM to HN2, net0 stops working (net1 still works fine). When I...

OK, I may misunderstood your first reply. I thought that you were saying that my network interfaces have to be exactly the same on all hosts in the cluster. Can you please try to explain your first reply?

I finally accomplished to rename the inferfaces. I have added these lines into the file /etc/udev/rules.d/70-persistent-net.rules: ACTION=="add", SUBSYSTEMS=="pci", SUBSYSTEM=="net",ATTR{address}=="ac:1f:6b:09:cb:58",NAME="net0" The key was to mention SUBSYSTEMS=="pci" because if that string...

OK, I tried to unify all interfaces names across the cluster. I tried to use two different approaches (described for example here: https://forum.proxmox.com/threads/no-70-persistent-net-rules-on-proxmox-5.38501/) 1) Making *.link file in /etc/sytemd/network/ 2) Making rules file in...

Thank you. You are right, physical interfaces on host nodes have different names (one server has 10G on board, the other one via PCIe). But the bridge is always vmbr0. How can I resolve this?

Hello, I'm experiencing a problem after migration of VM/CT (it happens on both) to another node in Proxmox cluster (they are on the same network, subnet and they have the exact setup). It does not depend on the type of migration (online/offline) either. The thing is that public network...