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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Proxmox iSCSI Boot?

Does anyone know how to install Proxmox over iSCSI so that it can be booted over the network? My current solution is to use USB flash drives, but would like a different solution. Thanks!
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Can Proxmox cluster be configured with dedicated nodes at Internet

Is it possible to create a cluster of Proxmox hosts connected through Internet at geographically separate locations?
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SFP port in ubiquiti switch says RX Fault

guys, so I recently bought an SFP cable to hook up to my server and my switch (Ubiquiti), but today, when I tried to hook everything up in the unifi controller in the port, I was connecting the SFP, I ...
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Proxmox Active Directory AcceptSecurityContext Error

Overview I'm trying to get Proxmox to perform user authentication via LDAP with a Windows Server 2016 ADDS server. Proxmox is convinced that my credentials are incorrect. Environment Proxmox 6.3-1, ...
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One LVM for multiple nodes in cluster

We have a cluster with 3 nodes. On one node hard disks have been added and configured as LVM. The idea is to make this LVM also available on the other nodes. Therefore, the other nodes were added to ...
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Sequential write to zvol is much slower than to a dataset on the same zpool

While experimenting with Proxmox VE, we have encountered a strange performance problem: VM disks can be stored (among other options) as individual raw ZFS zvols, or as qcow2 files on a single common ...
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Problems with Debian VM - import ZFS pool state: UNAVAILABLE

I had created RAIDZ1 pool in Proxmox. I had created Ubuntu VM and passed the controller with disks to it. After little while I wanted to try Debian. I had removed the controller from Ubuntu VM without ...
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60 views

Multi site ceph + proxmox

We have 2 proxmox clusters in production. They contain Ceph cluster with cephfs is on it. The task is to sync files between sites. Site A is master and site B is for backup. On site A cephfs files are ...
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Poor proxmox pveperf performance on a mdadm raid 1

When running pveperf on a Debian + Proxmox PowerEdge R540 server that uses two hard drive in a raid 1 configuration (using mdadm), I get very low performances in the number of FSYNCS/SECOND: $ sudo ...
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171 views

Migrate VM Proxmox to Vmware

I have a VM on proxmox with a vmdk harddrive on a IDE controller (it's a Windows Server 2019 VM) I want to import the HD into a VM on Vsphere (ESXi 7). I just copy the vmdk into the VM folder of the ...
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Proxmox - how to improve low IO performance?

I am extremly surprised with the low IO performance of Proxmox 6.3.3 , which is in the following configuration and the result Image Proxmox 6.3.3 512 GB NVMe SSD Create new VM content windows server ...
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574 views

Proxmox kills VM when RAM usage grows

I don't know if this stackexchange site is the most suited to my question, please flag this for mods to move the question elsewhere if it isn't. Context & issue I installed Proxmox on a physical ...
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Proxmox | /etc/default/pveproxy file

I have a small problem. I was trying to disable access to the proxmox web panel for the ip address and enable it for my domain. As I saw on the proxmox website (https://pve.proxmox.com/pve-docs/...
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Ceph: is setting lower “size” parameter on a live pool possible?

I have a 5-node Proxmox cluster using Ceph as the primary VM storage backend. The Ceph pool is currently configured with a size of 5 (1 data replica per OSD per node) and a min_size of 1. Due to the ...
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Monitor ZFS shrink events

I am using ZFS with Proxmox (debian based). The system has enough free RAM but I am close to hitting the point where ARC shrinking could be trigered. I would like to monitor these events, or at least ...
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OVH+Proxmox: How to use packer to build Proxmox image with Fallover IP as DHCP?

I searched entire internet haven't see any solution for it yet. I have a OVH + Proxmox instance. Plan to automatic the launch VM process. I know I can try use cloud-init but since I use Packer + (...
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ZFS raidz3 on proxmox having IO issues

I'm running Proxmox 6.2-11 with 256GB ECC RAM and the following raidz3 pool: pool: rpool state: ONLINE scan: scrub repaired 0B in 0 days 15:25:14 with 0 errors on Sun Jan 10 15:49:29 2021 config: ...
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No outgoing pings

I had a problem with the server. The hardware had a problem and broken the system. The system administrators restarted the server in the rescue mode and it never booted again. Proxmox and the virtual ...
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VFIO - igpu passthrough on Intel 4770 to a qemu virtual machine (Proxmox)

I am running the latest Proxmox (6.3-3 at this time, fully updated) and attempting to passthrough the onboard GPU on my Core i7 4770 CPU to a Windows 10 VM. I have already enabled iommu on the system ...
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Alpine setup on virtual machine UEFI does not boot

I am trying to setup Alpine linux on a VM (Proxmox) to replicate the layout of physical hardware (raspberry pi). The real layout is a raspberry pi 3, installed as "data" mode (based on wiki) ...
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93 views

PROXMOX rendomly reboots

I have a Proxmox cluster with two physical servers, pve and pve2. They are identical Dell R710s with 96GB of memory and 1TB (RAID-10). For some reason which I have yet to identify, pve2 will power ...
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254 views

How to boot ZFS root filesystem after setting dnodesize = auto (making grub unable to read the disks)

I have a proxmox (v5.4 I think) installation on top of ZFS in a server with 6 disks. There are 2 pools: rpool in a mirror of two SSDs that has the proxmox root filesystem and some containers and zvols....
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proxmox zfs pool not importing

Today I restarted my proxmox server which has a zfs pool for my data. The zfs pool did not come back up after the restart and is not visible in the proxmox UI. When I try importing the pool manually I ...
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229 views

How to get OS version of proxmox server over command line (cli)?

How do I check what version of Proxmox my server is running? Wikipedia tells me that Proxmox runs on a modified version of Ubuntu LTS It is a Debian-based Linux distribution with a modified Ubuntu ...
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233 views

Proxmox Ceph - Got timeout on separate network

I've installed on 4 nodes a completly fresh OS with Proxmox. Every node has 2xNVMe und 1xHD, one NIC public, one NIC private. On the public network there is an additional wireguard interface running ...
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ZFS inside of virtual machine?

Are there any technical reasons why I shouldn't use ZFS file system inside a VM on a hypervisor on top of hardware RAID? schema.png
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Cache configuration for PostgreSQL/TimescaleDB VM on ZFS with proxmox

I have a proxmox cluster of a single node and I want to start a new VM with a PostgreSQL and TimescaleDB and after a lot of reading about how to tune ZFS volumes for this purpose I still have some ...
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243 views

Proxmox - Can't mount encrypted ZFS dataset - zfs mount fails sillently without an error

I have problems with mounting encrypted zfs dataset after boot. Pool is properly imported and visible in zpool status output. Then I manually load keys with: zfs load-key -a - still no issues. And ...
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108 views

IPv4 Forwarding (NAT) only works after toggling IPv4 forwarding to off then on

This literally makes no sense and I'm stumped about why this is happening, but hear me out. Currently I'm using Proxmox 6 (Debian) and I created a NAT so VMs/LXC containers can communicate between ...
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Sas HBA failing on most reboots but no failures while running

I recently treated myself to a new server. The case has 2 x sas backplanes with 4 x hot swap bays on each. I've been running proxmox for the month or so since I've put it together, initally using one ...
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Proxmox: Connect VMs in private networks

I want to install VMs with private IPs in my Proxmox Cluster and route traffic between them. Eg: VM1: 192.168.1.10/24 VM2: 192.168.2.10/24 I'm not sure how this is done. Do I need VLANs? How can I ...
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promox is blocked from fully booting by ifupdown2 start job

i have a promox server with ifupdown2 installed. recently when trying to reboot the entire server promox failed to get to console, it gets stuck on replication runner failing and the ifupdown2 service ...
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Missing creation time for LVM logical volume

One of our storage has an lvm volume group on which multiple logical volumes are not set the creating host name and time (LV Creation host, time attribute). These were created quite a long time ago, ...
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How to configure Network via Proxmox

I'm trying to create VMs with Proxmox since August. Everything seems okay except the Network-Configuration. I've tried Routed, Bridged, NAT, VLAN and Bond, but nothing has worked. I had 4 single IP-...
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Unidentified Network on Windows10 VM installed on Proxmox

Please help. I have been trying to make the windows10 VM on Proxmox have network connection but I get unidentified Network on the ethernet card. I have successfully installed the VirtIO Drivers(Redhat ...
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705 views

oVirt or Proxmox with Cloudstack

I am using a cloud infrastructure based on XenServer and orchestrated by Cloudstack for lab purposes, and I want to try another KVM hypervisor on the same cloud. Is it possible to use oVirt or Proxmox ...
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QEMU Ubuntu Server 20.04 Initramfs write error

I created a QEMU virtual machine intending to install Ubuntu Server 20.04. The host is a Proxmox 6.x Debian system. The virtual machine parameters are: 2 CPU cores, 1 socket 512 MB ram, ballooning ...
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Bridge interface with VLAN tagging

I need my Proxmox instance to accept traffic from another VLAN and I'm having trouble with setting the interface correctly. I have 1 NIC, I've configured a port on my switch as a trunk interface, now ...
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632 views

Cloud Init with Flatcar Linux — Configuration not applying when passing custom file?

I'm using Telmate's Terraform provider for Proxmox and trying to deploy Flatcar linux virtual machines using Cloud Init by passing files via cicustom. Based on their example, I have crafted the ...
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Debian Service Startup Problems

I have a web page service of repository of pdf and word files where the user looks at a list of files and downloads them, the server has characteristics of 250 gb of space and 8 gb of ram and debian 9 ...
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309 views

How to prevent stealing of (others) IP addresses on KVM/Proxmox based virtualisation hosts?

Let's assume the following configuration: a router that announces IP subnets and a few Proxmox-based KVM hosts. Each Proxmox-based virtualisation host runs multiple virtual servers managed by ...
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691 views

Windows10 Proxmox VM has no network connection after veeam bare metal restore

I just performed a Veeam bare-metal(Windows10 Pro) restore to Proxmox Virtual Machine. I managed to boot the virtual machine but it has no network connection. There are 4 other VMs that have an ...
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146 views

Proxmox - redirect all ports to a specific vm

I wanted to ask if it would be possible to access all ports of a virtual machine using a subdomain. As a small example: host: 10.0.2.1 VM1: 10.0.2.2 VM2: 10.0.2.3 As result: vm1.example.com:any -> ...
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IPTables & Fail2Ban giant log

Im using IPTables and Fail2Ban to stop some basic DDoS attacks. The tables are working ok, the fail2ban too. The problem its the log of iptables, its too big with a 10minutes attack (57mb log). ...
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Load Balance with proxmox and kubernetes with 3 physical server

We have 3 physical servers and We want to build a HA Kubernetes cluster on it. At the moment We use proxmox ve 6.2 and VM-s for Kubernetes. How can I provide load balancing between the three servers? ...
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485 views

How to make a Proxmox VM autostart with the qm command line tool?

How do I make a VM boot on startup using just the qm command line tool? I don't want to log in to the GUI, just to be able to set autoboot using SSH.
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Dell PowerEdge T-620 - Choosing Memory Modes in the BIOS

I'm trying to configure the Memory Mode, in the BIOS, of a Dell PowerEdge T620 with dual processors: Owner's Manual | Technical Guide The system has 384GB of DDR3 LRDIMM Memory and I'm able to choose ...
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vmalloc allocation failure when scaling LXC containers past 1350 on Proxmox 6.2

I have a server of the following spec: Dual AMD EPYC 7742, 1TB RAM, 8TB SWAP (Round-robin 8xNVME array), 144TB SSD Storage (72 drives over 10 zpools) uname -a Linux host 5.4.44-1-pve #1 SMP PVE 5.4.44-...
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585 views

Proxmox & Packer: VM quit/powerdown failed during a Packer build. Anyone have any ideas why?

I am trying to create a Proxmox VM template using Packer. However I am getting a Proxmox error saying Build 'proxmox' errored: Error converting VM to template, could not stop: VM quit/powerdown failed ...
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Adding more than 32 IPs on a Proxmox (v6) VM

I use Proxmox v6 and I want to add more than 32 IPs (network device) on a VM but via the interface it is not possible. Currently, I go through the Proxmox interface and I go to -> Hardware -> ...

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