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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27
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3answers
25k views

Windows 7 Setup hangs at “Starting Windows” using Proxmox 4.2

I am trying to install Windows 7 on Proxmox Virtual Environment version 4.2-4/2660193c, running on Debian Jessie. I have followed the instructions on this site. I uploaded a known-good Win7 ISO (that ...
19
votes
4answers
20k 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 ...
9
votes
4answers
7k views

Ganeti vs Proxmox [closed]

I'm system administrator in small software house. I'm going to virtualise our servers. The main reason for doing this is providing highest possible uptime, but probably it will also increase resources ...
9
votes
2answers
941 views

Why would a server lockup knock other servers off the network?

We have a couple dozen Proxmox servers (Proxmox runs on Debian), and about once a month, one of them will have a kernel panic and lock up. The worst part about these lock ups is that when it's a ...
7
votes
1answer
1k views

FIO Benchmarking - Inconsistent and Slower than Anticipated: Are my RAIDs Misconfigured?

TL;DR: I'm having some performance issues with my hypervisor storage. here are a bunch of test results from fio. Skip to the Results section to read about them and see my questions. Summary I ...
6
votes
3answers
63k views

How would I add a second physical hard drive to proxmox

I installed proxmox on a single 250GB hard drive and I would like to add a second identical hard drive to put more VM's on. I already tried once, and didn't get very far. I added it and formatted it ...
6
votes
2answers
314 views

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
5
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3answers
3k views

How to limit ZFS writes on NVME SSD in RAID1 to avoid rapid disk wear?

Currently I'm running Proxmox 5.3-7 on ZFS with few idling debian virtual machines. I'm using two SSDPE2MX450G7 NVME drives in RAID 1. After 245 days of running this setup the S.M.A.R.T values are ...
5
votes
1answer
10k views

Proxmox Nat Networking Issue

Definition I have installed Proxmox 3.2 and i am trying to configure a virtual machine as a communication server that handles all traffic and forwards them to the nodes with private ip. I ...
5
votes
2answers
437 views

Hot swapping physical disks passed through to a qemu VM

I have a virtual server running in qemu on proxmox. It has two physical disks attached to the host using a virtio: directive in 101.cfg as folllows virtio2: /dev/disk/by-id/ata-vol1,backup=0 ...
5
votes
1answer
5k views

Unable to make work both private and public ip network on openvz container in Proxmox

I'm using Proxmox 3, it is a fresh installation. For those who know, I'm using OVH Vrack 1.5 (along with a previous Vrack 1.0). My server has two interface eth0 and eth1, I succeeded to configure ...
5
votes
1answer
2k views

Enabling IPv6 with OpenVZ using Proxmox 2.2

I'm trying to enable IPv6 on my Debian nodes (OpenVZ) using venet; my host is under Proxmox 2.2 (kernel 2.6.32-16-pve), and it seems the routing fails. My host correctly pings all my nodes; all my ...
5
votes
3answers
7k views

Fresh Proxmox VE 2.1 installation with defaults can't be reached or pinged

I am using the lastest Proxmox VE 2.1. My server has two NICS with a uplink only connected into eth0. My Server is a co-located server utilizing public IPv4 IPs. It is not behind a firewall or any ...
4
votes
2answers
39k views

Proxmox - Uploading disk image

I've got a KVM Virtual Machine in my local PC, and I'd like to copy it to a Proxmox server. According to the docs, I just have to create a new VM on Proxmox and add the existing disk image to it, but ...
4
votes
1answer
12k views

proxmox install on ubuntu

I have a server running Ubuntu 14.04 and I want to install the latest version of Proxmox on it it seems that Proxmox can be installed only on Debian but since they both use apt, is there a way to ...
4
votes
1answer
229 views

How can I convert a iSCSI system disk from XenServer to another format

Perhaps this is quite a silly question. I installed a new VM on XenServer. It loads the full system from a iSCSI from a NAS. Now I am planning to migrate to Proxmox as XenServer falls short regarding ...
4
votes
1answer
33k views

network configuration (bridging) proxmox

I bought yesterday an proxmox license. All works fine only the network configuration is very complicated. My network configuration: 84.200.50.186 -> hostsystem ip 84.200.50.186 -> VM ip 255.255....
4
votes
2answers
26k views

How to migrate a VMWare vmdk to Proxmox 4.4 with local-lvm storage

Until recently I was using Proxmox 4.0 and this was my procedure for converting a VMWare VM to Proxmox Create a working VM. Uninstall VMWare Tools Mount the ProxMox Drivers ISO and copy the ...
4
votes
1answer
4k views

lxc-attach command with redirection

I'm setting up for a Proxmox 4 server a script that migrates OpenVZ dumps from a Proxmox 3.4. The scripts scp the backups, restores them and so on. At a time of the process, I'd like to wipe /etc/...
4
votes
1answer
688 views

SELinux on CentOS7-based LXC?

Is there any way to enable SELinux on LXC-based container using proxmox 4.2?
4
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2answers
3k views

Does Proxmox VE Support LVM as block storage for KVM guests?

Does Proxmox VE Support LVM as block storage for KVM guests to avoid the overhead of going through the filesystem layer on the host system ?
4
votes
1answer
681 views

Configuring nagios notification settings to be very frequent

I've set up a Proxmox VE Cluster with three nodes. Each nodes has a number of VMs running on it. I'm using the PVE Monitor Plugin to set up the hosts and services, which works fine. My issue is that ...
4
votes
3answers
19k views

proxmox KVM routed network with multiple public IPs

I have a dedicated hosting with hetzner. Additionally i have bought a 6IP subnet. My main IP is: 148.111.111.200 My main subnet is: 255.255.255.224 My additional IPs are 148.222.222.1 to 148.222.222....
4
votes
2answers
12k views

How to apply proxmox firewall rules to VMs?

This is my current scenario: I have a proxmox server in the cloud. I installed 2 VMs, that have different IPs (not on the same subnet as the main proxmox server — see THIS to understand why). On the ...
4
votes
1answer
1k views

Private network between two KVM VMs

I'm trying to connect two KVM hosts together with a transparent ethernet link. I'm using Proxmox VE as the host and have configured 2 KVM VEs with ethernet interfaces and joined them to a single ...
3
votes
1answer
12k views

How to shrink the disk of a LXC container on Proxmox 4?

I would like to shrink the main disk of a LXC container on a Proxmox VE 4.2, from 30GB to 20GB for instance. Shrinking seems not to be supported yet : $ pct resize <VMID> rootfs 20G unable to ...
3
votes
2answers
751 views

Debian Linux server locked - no clues in the logs?

I had a server lock up this morning. Here is a screen shot from the console: None of the messages from the screen shot mean anything to me. I have a feeling that the important stuff probably ...
3
votes
2answers
9k views

How to migrate a regular LXC container to a Proxmox LXC container?

How do you migrate a regular LXC container (from another or the same server) to a Proxmox LXC container, which can be accessed via the Proxmox web GUI? For example, I have a container created by ...
3
votes
2answers
13k views

Proxmox VE cluster not working

I have been using a Proxmox VE 2.0 cluster (2 servers) for months. Today, I had the "bright idea" to install a GUI on one of the servers. I used tasksel, and selected the graphical desktop ...
3
votes
3answers
9k views

Shell access for a KVM VM

I would like to access my KVM VM with a shell. I created it via proxmox 2.3, Ubuntu 12.04 is installed on it via an official template. I would like to find the same command as vzctl enter <VM_id&...
3
votes
1answer
1k views

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 ...
3
votes
1answer
14k views

Proxmox. ERROR: Backup of VM failed - CT is locked (backup)

I tried to create backup of the container (LXC) in my Proxmox and I get the error: INFO: starting new backup job: vzdump 206 --node my_server --mode snapshot --storage backups-stor --remove 0 --...
3
votes
1answer
13k views

Proxmox KVM fails to start

My new server is Fujitsu Primergy RX1330 M1 with Intel® Xeon® Processor E3-1220, running either Proxmox V4 or Proxmox V3.4 i have the following problem. When i create a new virtual machine, during ...
3
votes
3answers
4k 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-...
3
votes
1answer
1k views

“Microsoft Windows 10 Enterprise 2016 LTSB 10.0.14393 Version 1607” stuck at boot in qemu/kvm (proxmox)

I have played with different versions of windows 10 inside qemu/kvm (proxmox) and all of them works fine except: "Microsoft Windows 10 Enterprise 2016 LTSB 10.0.14393 Version 1607". I don't think that ...
3
votes
1answer
2k views

GFS2 over DRBD automount

I have 2 nodes Proxmox cluster. For KVM images I use DRBD device with GFS2 on it. Everything works fine except GFS2 automounting after server restart. I put in fstab: /dev/drbd0 /cluster/drbd0 gfs2 ...
3
votes
1answer
249 views

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-...
3
votes
1answer
6k 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 ...
3
votes
1answer
7k views

How do I migrate Proxmox VM to another computer in a cluster?

Original: I am running Proxmox 4.2 with a Debian 8 (Jessie) VM. I have DRBD running between two desktop computers in a cluster and I have a third node in the cluster which is a laptop not ...
3
votes
1answer
7k views

How to assign dedicated vCPUs to specific VM on Proxmox (KVM) or what system could do that?

I'm posting this here, because what I've found about the topic is either outdated, incomplete or not suitable for various reasons. I have wanted for a long time to learn how to map specific vCPUs to ...
3
votes
1answer
6k views

Poor Write Performance in VM inside Proxmox PVE 2.0

I am running a PVE 2.0 on a decent Hardware (2 SATA HDDs as RAID1, 12GB RAM, i7 CPU) but the I/O Performance is very poor inside the VM (Ubuntu 11.10 Server). The very same VM was copied to another ...
3
votes
0answers
135 views

Proxmox Centralized Management

At my workplace, we use a lot of Proxmox servers, on various locations (some are on premise, some are hosted by hosting companies). As we are currently managing about 20 proxmox hypervisors, we would ...
3
votes
1answer
872 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 ...
3
votes
0answers
50 views

Is there any downside to removing Sys.PowerMgmt from all Roles?

We use ProxMox (currently version 4.1-1) on a couple of servers here, and this morning I screwed up and shut down the entire system when I meant to shut down a VM. I'd like to avoid doing so in the ...
3
votes
1answer
4k views

Add a second disk image to a LXC container in Proxmox 4

My LXC containers in Proxmox 4 have a root filesystem stored on the host as a RAW disk image stored in : /var/lib/vz/images/<ct_id>/vm-<ct-id>-disk-1.raw This folder on the host computer ...
3
votes
0answers
1k views

IOTOP on LXC -> Netlink error

unfortunately I can not use iotop on proxmox-lxc-container and debian 8 template. This is the output: Traceback (most recent call last): File "/usr/sbin/iotop", line 17, in <module> main() ...
3
votes
1answer
4k views

Proxmox vps container connection problems

I have Proxmox on my node server which have ip:5.189.190.* and I created openvz container on an ip : 213.136.87.* and installed centos 6 on it The problem: Cann't connect to container ssh directly ...
3
votes
0answers
3k views

LVM DRBD Shared between nodes proxmox

Context : I have proxmox cluster with the volume group shared with drbd for the VM - KVM. I have a problem with drbd. Indeed, when a node disconnect, the associate link between the differents nodes ...
2
votes
3answers
148 views

How do I know if I run hw raid 1?

I created a hw raid 1 using efi. Server Dell PowerEdge T20 with Proxmox The raid controller is 00:1f.2 RAID bus controller: Intel Corporation SATA Controller [RAID mode] (rev 04) root@pve:~# lsblk ...
2
votes
2answers
3k views

how to drop_caches in OpenVZ centos6 container

I have tried sudo sh -c 'echo 3 > /proc/sys/vm/drop_caches' sudo echo 3 > /proc/sys/vm/drop_caches echo 3 > /proc/sys/vm/drop_caches echo 3 | sudo tee /proc/sys/vm/drop_caches and a ...

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