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Hi @mira ; Imagine the network is not stable, does proxmox reboots itself without writing any log ? or any indication?

Hi; according to zabbix link and its traffic is never down but according to corosync it sometimes flaps. but it has 3 links and it does not go under 2 active links, so it should not be a problem ? [KNET ] link: host: 5 link: 0 is down [KNET ] host: host: 5 has 2 active links [KNET ] rx...

Hi Mira; Thanks for the info it improved significantly, but still there are some issues. it was rebooting or VMs were stopping without reboot 5-10 times a day. Now it reboots once a day or less.

thanks Mira; we will try

VM config : agent: 1 balloon: 2048 boot: cdn bootdisk: scsi0 cores: 4 cpu: host memory: 6144 name: apache-pulsar-zk-s1-monitor net0: virtio=06:E5:33:B0:D0:68,bridge=vmbr1,firewall=1 numa: 0 onboot: 1 ostype: l26 scsi0: hdd_vm:vm-192-disk-0,discard=on,size=50G scsihw: virtio-scsi-pci smbios1...

they are all : QEMU emulator version 6.1.0 (pve-qemu-kvm_6.1.0) Copyright (c) 2003-2021 Fabrice Bellard and the QEMU Project developers Moreover : apt-cache policy pve-qemu-kvm pve-qemu-kvm: Installed: 6.1.0-3 Candidate: 6.1.0-3

Hi; I dont think your theory is correct : if it is about unstable network , why it was working fine with proxmox 6.4 ? I am also attaching QEMU logs of node1 and node7 (all nodes have similar logs) . P.S: all pveversions should be identical in our cluster. pveversion: proxmox-ve: 7.1-1...

Hi ; Is there a known bug with the latest QEMU/KVM ? or may be it only happens when it is upgraded from QEMU 5.2 -> QEMU 6.1 any ideas? reboots are less today but QEMU crashes all day long.

Dear Mira, There are two log files in the zipped file. cluster-s2 is the one that is rebooted at around 08:38. Would it be possible to focus on that log files? For the requested info please see below for node2 which is rebooted: pveversion: cluster-s2:~# pveversion -v proxmox-ve: 7.1-1...

Hi, Syslogs for rebooted node and the one another node (for the same time period) were attached as zip file. Time for the reboot is Thu Jan 27 08:38.

Hi, We are operating a PVE cluster consisting of 7 nodes. Last week cluster was upgraded from 6.4 to 7.1. After the upgrade, we are experiencing almost random reboots on nodes. Could you please help to solve the problem?