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I can confirm that after full host restart error has disappeared. Thanks!

Hi, Same problem here on two servers. It's happening on all guests, from 16.04 LTS to 20.04 LTS. I haven't restarted the hosts yet. This is the stack: proxmox-ve: 6.3-1 (running kernel: 5.4.44-2-pve) pve-manager: 6.3-3 (running version: 6.3-3/eee5f901) pve-kernel-5.4: 6.3-3...

With a second port, like that: # $OpenBSD: sshd_config,v 1.100 2016/08/15 12:32:04 naddy Exp $ # This is the sshd server system-wide configuration file. See # sshd_config(5) for more information. # This sshd was compiled with PATH=/usr/bin:/bin:/usr/sbin:/sbin # The strategy used for...

HI, I have a cluster with to machines on Proxmox 5.3-11 environment. I know that port 22 it's needed to internal cluster communication, but I want to prevent remote access to this port. I added a second SSH port to allow remote login and works well. I have configured the firewall on cluster...

You need to increment the ARP limits of your server. First step: The solution to the problem is to increase the threshold level for the network devices To check the present threshold level 1 cat /proc/sys/net/ipv4/neigh/default/gc_thresh1 It will give some value as 128 or 256 or 512. This...