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Questions tagged [proxmox]

Proxmox Virtual Environment (PVE for short) is an Open Source Server Virtualization Platform, based on Debian, KVM and (LXC for v4 and above, OpenVZ for versions <4.0)

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45 views

Adding a second subnet IP to bridge breaks routing of previous subnet

I have a host machine with Proxmox installed on it, hosting several VMs. The host has a NIC and a bridge, and a subnet of 16 public IPs assigned to the bridge, so that each VM and the host itself gets ...
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28 views

How can I mount cephfs on proxmox 5.3?

I have added the pxmx-cephfs.secret (the admin keyring) to /etc/pve/priv/ceph/. Then I proceeded to add cephfs through gui with id pxmx-cephfs and the monitors. While it is added successfully ...
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1answer
54 views

Retaining Windows Server 2016 Licence when migrating VMs

So I'm trying to figure out how best to keep our active (legitimate) Windows Server 2016 Licence when migrating from ESXi to Proxmox. I have done a quick n dirty migration and it all seems to work ...
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22 views

How to increase Proxmox VM Shutdown timeout?

I've got several servers running Proxmox 4.4 (upgrading soon to the latest 5.x release). I've got a number of VMs that are slow to shutdown, and I'd like to increase the timeout used by Proxmox when ...
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14 views

Is it possible to use Proxmox VE inside a VM?

Is it possible to use Proxmox VE authentication from inside a VM? What I want to do is create users in the Proxmox VE realm via the Proxmox management web console, and those users should be able to ...
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45 views

Which type of failures I could face with ZFS over multiple RAID-0 drives?

I'm building Proxmox VE on Dell R820, as a Perc H710 card does not support path-through or JBOD modes. I've made a division to enable RAID-0 on 14x 1.0TB SAS drives for zfs storage and RAID-1 of 2x ...
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22 views

Proxmox Update Config DNS and SearchDomain

Firstly, I ask about Proxmox here cause I can not get an account on Proxmox Communication. The question is: Why does proxmox cannot update the DNS and SearchDomain for a container when a containner ...
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67 views

Proxmox: how to access a ZFS volume directly through guest?

That may sound like a strange use case, but is there a way to access a ZFS volume directly through an LXC container or a Qemu VM with Proxmox? I'd like to have incremental backups pushed to my guest ...
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466 views

Why am I missing /var/run/sshd after every boot?

I'm running a Ubuntu 16.04 container under Proxmox 5.2-11. After applying the latest round of patches1 I'm unable to login at the console or over ssh. I mounted the container root FS on the ...
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1answer
202 views

Connection refused when accessing container from local network through reverse proxy

I am running Proxmox VE on a root server. There are several virtual containers, on of them acts as a reverse proxy who does TLS termination. On the proxmox machine iptables handles port forwarding ...
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87 views

SNMP timeout/stuck mid way

I have a proxmox 5.2 machine (4.15.18-8-pve) and snmp installed with default config. when I do a snmpwalk it outputs some information but then hangs. Any future snmpwalk requests don't get any ...
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40 views

Proxmox LXC networking

We have 5 physical machines hosted at OVH. Each of them have Proxmox 5.2-10 installed Machines are inside of OVH vRack. we have separate LXC for database, separate LXC with loadbalancer and several ...
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1answer
194 views

TASK ERROR: command 'systemctl start pve-container@102' failed: exit code 1

I executed this command apt update && apt upgrade. After that, all container start except the ftp container. Launch this error: Job for pve-container@102.service failed because the control ...
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51 views

Why am I getting this error when trying to add a zfs pool to ProxMox? Am I using the wrong ID?

Am I using the wrong ID to get this error? There's no specifics about what ID or what format, anywhere I can find. Installed ProxMox VE 5.2 zpool create deadpool raidz2 /dev/sda /dev/sdb /dev/sdc /...
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45 views

Physical RedHat Enterprise Linux to Virtual (PROXMOX) using CloneZilla fails with error

I am trying to get rid of an old system that I would like to import into my virtual infrastructure. I am using PROXMOX VE 5.2 The source machine is a Lenovo server running a Red Hat Enterprise ...
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32 views

parted and fdisk not showing new size after expanding a RAID 1 volume (Proxmox/Debian)

Background: I need to extend a RAID 1 volume from a live Proxmox/Debian server that has a LSI SAS 2108 MegaRAID card, from 1TB to 2TB, I did this on a test environment albeit it was with a different ...
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1answer
68 views

Ansible fails at “Gathering hosts” presumably because SSH is slow to connect. Setting `UseDNS no` resolves the issue

I am having what appears to be a DNS related issue that I would appreciate some assistance resolving. I'm using Ansible to provision a Kubernetes cluster on my Proxmox server. The project works in ...
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55 views

Certain network request errors only inside VMs

I have Proxmox 5.2 installed on NUC for over a month and everything work fine. In the recent days, I decided to create a new workstation VM machine, and noticed something strange. Certain network ...
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53 views

Enable kernel module installed for different kernel version

A service is denying to start with error message Failed to find module 'ib_iser'. ib_iser.ko is present inside the directory /lib/modules/4.15.18-7-pve but is not present in the /lib/modules/4.15.11-...
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60 views

How to move a physical Ubuntu install -> image -> install proxmox VM on same machine and spin up that Ubuntu image on Proxmox?

So I have a physical server with Ubuntu 18 Server runnning on it. I want to use this hardware to run Proxmox now though. This server, however, is relatively important and too much work manually ...
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194 views

How can i recover deleted pve/data correctly

I accidentally deleted pve/data thin volume in proxmox. Very next second i realised this and i tried to recovering it as below lvremove /dev/pve/data ls -lrt /etc/lvm/archive head /etc/lvm/archive/...
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1answer
74 views

What does iostat show a different utilization for the 'dm' device?

I installed an M.2 drive into a Proxmox host this morning and monitored the disks with iostat -x 1. Why is iostat showing dm-7 is at 98% utilization, while the M.2 LVM PV (nvme0n1p1) shows only 6.8? ...
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457 views

Proxmox 5.2 Gemini Lake and IGD (graphics) pass through for Ubuntu 18

I’m trying to set up a fresh install of Proxmox 5.2 on Gemini Lake and I would like to configure a VM with IGD (graphics) passthrough for Ubuntu 18 Computer-based on ASRock J4105-ITX asrock.com/mb/...
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68 views

Is there a way to make VM snapshots in PROXMOX LVM storage

Acording to official docs https://pve.proxmox.com/wiki/Storage:_LVM the LVM storage option does not support VM snapshots. You need to setup Thin LVM for snapshots to work. My question is if there's a ...
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1answer
138 views

Frequent Proxmox server interruptions in Hetzner

Unfortunately, there is a problem with server access at hetzner datacenter for some time. When we connect to the server with a KVM, we find that the server has not crashed, as if the server's network ...
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1answer
161 views

How to allow vpn clients to access lan servers

I need some help understanding how to allow the vpn clients to access servers that are on the "intranet". I have one dedicated/physical server at ovh(if that matters) with 4 additional ips. The OS ...
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18 views

How add size at bootdisk on Proxmox LXC?

How add size at bootdisk on Proxmox LXC? I use pct resize 101 rootfs 20G, I can see new size when LXC is poweroff but when I poweron it, I see old size, and it's full. Thanks
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41 views

GRE Tunnel allowing access to internal IP

I need your help with iptables because i got stuck. Explainations: What I have ? Proxmox public IP: 91.121.83.XXX Proxmox VMs private IPs: 192.168.0.101 (192.168.0.0/24) Proxmox GRE tunnel IP: 192....
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2answers
316 views

RAID5 - ZFS vs LVM+mdadm on 3 SSDs for KVM/LXC server (proxmox)

I want to configure RAID for a KVM/LXC server (it's running proxmox as a hypervisor). This server is now running on 3 SSDs in this configuration: 10GB host root partition + Btrfs partition for some ...
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50 views

Tcpdump receives packets but they are not delivered to firewall

I am working with Proxmox, OpenVPN and Mikrotik Router. When I try to connect from OpenVPN client (192.168.10.13) to VM (192.168.1.19) hosted on Proxmox I don't get any response. Proxmox host (192....
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1answer
43 views

Adding a Proxmox 5.x node to 4.3 cluster

I am performing an upgrade on my cloud cluster. I have 5 nodes which are running currently on Proxmox Virtual Environment 4.3-12/6894c9d9 I need to upgrade them to newest 5.x version. The upgrade ...
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1answer
258 views

Proxmox doesn't recongnize increased swap space

So I tried to increase the swap LV from 8GB to 16GB, but Proxmox web panel doesn't seem to see the change. The LVM increased the space, but Proxmox haven't changed it's panel. Originally lvdisplay ...
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163 views

How to recover [unknown] disk from LVM2 on Proxmox

On my server, i have 5 disks. The disks are configured as follows: Raid 1 (Disk 1 + Disk 2) [320gb each] - Proxmox installed Raid 1 (Disk 3 + Disk 4) [1tb each] + HDD (Disk 5) [1tb] = totalizing 1....
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59 views

Move VM with custom kernel/initrd to Proxmox VE

I've got a KVM image running on CentOS that I'm trying to get running on a Proxmox (5.20) Hypervisor. The current VM (I think it may have been a p-v at some point) has the following options in the vm ...
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1answer
183 views

Disable thin provisioning (sparse files) in proxmox

I'm using Proxmox Virtual Environment to run few virtual machines. I use raw storage format and I need that the disk is fully pre allocated when created so it does not grow. The proxmox says that ...
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1answer
292 views

Proxmox LAN Routing

I am attempting to set up my first Proxmox hypervisor as a test server. I have managed to install Proxmox and set up some VMs however I can't get machines on my local LAN to connect to the Proxmox VMs....
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357 views

Entire proxmox Xen Node has grey question marks + database container gone

Firstly, i've recently taken on the management of a proxmox cluster which I have had no experience managing previously (i'm completely new to cluster management, but not too bad at linux). pve-...
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37 views

Public IP not resolving

I have a Debian/Proxmox sever running and trying to add a public IP which is not resolving and im trying to figure out if its a config issue or out IT network infrastructure (which we do not manage) ...
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54 views

Proxmox internet via NAT issue

This is the standard setup for NAT? So my VM's behind vmbr1 should be able to access internet via NAT. However there is an issue with my vm guests unable to connect to public ip addresses. Could ...
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314 views

Proxmox 5 containers are not able to ping outside

Im using a KS server, I've installed Proxmox 5.2 (the one preinstalled by OVH). The container is using Debian 8 The problem is that: From the container I can't ping anywhere, with: ping 8.8.8.8 I get ...
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29 views

Setting up a Proxmox device to allocate IPs to KVMs on isolated networks

I am a novice attempting to dive into low level networking and I'm not having any success. Documentation regarding BGP and level 3 / 2 switch routing is sparse and assumes you know a huge amount. I'...
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309 views

Poor disk performance on KVM guest

I have a server running Proxmox and some Linux VMs running on it. On the host, I get 200+ MB/s write to the disk On a VM, I only get around 50-60 MB/s Caching is disabled for all VMs. I'm using ...
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1answer
260 views

Proxmox 5.2 in OVH - second IP of the LXC containter not working

I have Proxmox 5.2 server in OVH. I have few LXC containers and everything work just fine except when I add a second IP to the container it doesn't work - inside in the container the interface exists ...
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1answer
271 views

How to eject CD/DVD of KVM-based VM with `qm set`?

I am using Proxmox VE 4.4 and I am puzzled how to eject a CD/DVD drive that is currently configured. Assume that the ID of the guest VM is set as the environment variable vmid. Currently the ...
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1answer
531 views

RAID 10 with SSDs on LSI 9260-8i has bad performance

I am trying to get a raid 10 running with LSI 9260-8i (IBM M5015) and 4 x Samsung 850 Pro 512GB SSDs. The problem is, that the resulting sequential write performance is really bad (< 100MB/s). ...
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29 views

IPTables DNAT from inside/Masquerading

i have the following setup: vmbr0 is my WAN with Public IP, vmbr1 my LAN with Private IP's. Now i do DNAT for certain ports on vmbr0 to an IP inside the LAN: -A PREROUTING -i vmbr0 -p tcp -m tcp --...
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431 views

How to restore Proxmox VMs on a new node?

After a reboot, my usual proxmox server won't boot. Unfortunately, I had no backup plan. :-( Here is the output of the error message : [ 81.006231] print_req_error: I/O error, dev nbd0, sector ...
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1answer
106 views

OpenVZ container with different subnet public IP (using venet)

I am using Proxmox 3.4 with OpenVZ and venet. In various servers, everything is working fine. But in a new dedicated server, I cant ping my only container. The public IP of the HN is 158.69.241.xxx ...
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1answer
97 views

When running apt-get dist-upgrade on a PVE host, (when) will this affect running guests?

So my question is on a Proxmox VE host (let's assume 5.1 in case it matters) when I run apt-get update && apt-get dist-upgrade and decide to go ahead with the installation of package updates, ...
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25 views

mounting hard drive that is passed to VM

I'm running proxmox and I was previously passing a hard drive (ext4 data drive) as iSCSI to a linux VM. Everything was good. Then I decided to pass the PCI SATA controller to the VM instead of just ...