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You can check dns resolve time with dig: dig google.com ; <<>> DiG 9.9.4-RedHat-9.9.4-61.el7 <<>> google.com ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 2866 ;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1 ;; OPT...

cat /sys/devices/system/clocksource/clocksource0/current_clocksource

There is no solution for this nginx + novnc issue. So, switching to HAProxy (if you need noVNC console) is a reasonable solution. Not hard to do it, you can find an example config here: https://pastebin.com/QLSNbr6e

Install wildcard certificate on your Proxmox nodes (letsencrpyt providing it now), and use HAProxy.

Honestly, i don't know. I always downlaod the latest virtio iso from fedora.

You can do this with Ceph also (but manually, not inside proxmox). https://ceph.com/geen-categorie/incremental-snapshots-with-rbd/

Disable NFS storage in Proxmox, umount it on nodes, modify ip address in /etc/pve/storage.cfg file and re enable it.

Hi, Are you store VM HDD images on NFS, or only backups, isos (so data what not opened)?

Ok, but did you tried to switch to root with sudo or su?

Create an iso with the content, and attach it. Or add an other NIC, but configure it as an e1000, because win have driver for that.

Swithc to root with sudo

Is windows installed the NIC? In Powershell Get-NetAdapter cmdlet will list it. Maybe you can try install spice-guest-tools, its install all virtio drivers.

I have DL160 G6, it have this NIC: 05:00.0 Ethernet controller: Intel Corporation 82576 Gigabit Network Connection (rev 01) 05:00.1 Ethernet controller: Intel Corporation 82576 Gigabit Network Connection (rev 01)

Basically yes. I don't think you can upgrade it directly to 5, because old cluster working on a different way what 4/5 using. And fresh install always better.

KVM is easy, basically you need to migrate HDD image (qcow2, raw, or whatever you using) and its config. But for OpenVZ, you need to convert it to LXC, with vzdump and restore.

Hi, Do you have OpenVZ or KVM vms?

What was wrong with piler? We using it without any issue, and when need to restore emails, its good. However, yes, we using only same basic features. All incoming and outgoing emails sent to piler server, and there is a retention policy, to automatically delete emails after 3 years. Thats all.

Yes, that part was clear, admin can review these information.

hello, Is the user receive back some notification when they email not sent out?

Hello, We using MailPiler for email archiving (we started using this ~5 years ago).