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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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I installed pve in VirtualBox for testing, and the network of the pve virtual machine is blocked

I installed pve in VirtualBox for testing, but now the virtual machine with PVE cannot be used, and I can't open the network card promiscuous mode in the virtual machine. Has anyone encountered it? ...
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How to deal with dynamic drive name when device mounting hard drives to LXC on Proxmox?

Question Setup On a Proxmox server I create an LXC container with: pct create 101 local:vztmpl/centos-8-default_20201210_amd64.tar.xz --features mknod=1,nesting=1,fuse=1 --ostype centos --storage=CTVM ...
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2 answers
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ZFS and SAN: issue with data scrubbing

Working as scientists in a corporate environment, we are provided with storage resources from a SAN within an Ubuntu 20.04 virtual machine (Proxmox). The SAN controller is passed directly to the VM (...
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Proxmox VE - problems in setting private network

I have recently bought a test dedicated server from to test proxmox. The installation went smoothly; however, I get stuck in the network configurations. My Use case- I want to create 8 LXC containers ...
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1 answer
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Why does drop_caches increase "available" memory

I encounter low memory issues on proxmox 7 nodes I'm managing. When reading about similar problems I was directed to linuxatemyram.com, after reading this page I started monitoring "available&...
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kvm / proxmox 5 - virtio_net slow network 5Mbit, sometimes 900Mbit in opposite or both direction

Environment: several PROXMOX 5 (KVM) servers (kernel: 4.15.18-30-pve) VMs running Debian 9, 10 and 11 (vitrio /qemu-guest-agent current version of the respective Debian version) network cards ...
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Storage for Millions of audio files with search accessibility (if possible) [closed]

I was looking for solution for this problem that I have with storing of 7tb worth of files , all of them are audio files these files are recordings of asterisk based server freepbx. At first what I ...
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2 answers
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How to get the email I entered on Proxmox VE setup in the shell?

When I login to my Proxmox VE7 host, I'd like to get the email that I entered when I set up Proxmox on installation. Is it possible? The idea is to automate certbot initialization non-interactively ...
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How do i get a internet connection to proxmox vm

I have installed proxmox VE 7.1-7 to a hetzner dedicated server and i am having problems with getting internet connection to virtual machines /etc/network/interfaces: auto lo iface lo inet loopback ...
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-1 votes
1 answer
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ProxMox Ubuntu 20.04 Server VM Stopped working - Fails to boot Libmount.so.1 - Invalid ELF [closed]

So I've had this VM running ProxMox for the last 18 months no issues. I build a new ProxMox Server, and migrated this VM to the new server. Now when it boots, I get the following screen: https://i....
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1 answer
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How can I split a zfs pool for storing VMs and Glusterfs separately on Proxmox?

I have a ProxmoxVE server which I created the following zpool on: root@thor:\~# zpool list NAME SIZE ALLOC FREE CKPOINT EXPANDSZ FRAG CAP DEDUP HEALTH ALTROOT Asgard 5.45T 816K ...
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GlusterFS : How to change the ip used by servers while in production?

I have a 4 nodes Proxmox cluster in which each member is connected to the network by a single Gigabit Ethernet socket. In this cluster, I have a GlusterFS with 3 volumes installed on the proxmox hosts ...
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How can I use iptables to forward port 15672 to the same port on a proxmox virtual machine?

I have a virtual machine that contains a service that listens on port 15672. The server that the VM is on is set up to use iptables to forward requests to the virtual machines. Here are the relevant ...
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1 answer
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Proxmox VM will not boot my ISO when using KVM

I've setup Proxmox on a vServer that is virtualized using Xen HVM (according to my Hoster) and want to start by creating a VM with pfSense within my vServer using KVM to route my all my traffic ...
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Cisco nexus VM does not booting as i expected

Host Specfication Hardware CPU: AMD Ryzen 7 1700X Memory: 32GB Motherboard: ASRock X470 Master SLI/ac Software OS: Proxmox VE 7.1 Kernel: Linux 5.13.19-4-pve #1 SMP PVE 5.13.19-9 VM bios: ovmf boot: ...
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Proxmox container moved to the wrong machine and now it is trapped there

I have a HA proxmox cluster with three nodes. I have replication between two nodes. Each of those two nodes have a ZFS pool that is used for replication. I have replication rules setup between those ...
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migrate vps from linode to proxmox img not booting

I would like to create a fallback instance of a VPS running on Linode to an on premise Proxmox. I downloaded a raw image of the server using ssh root@foo.com "dd if=/dev/sda | gzip -1 -" | ...
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Home Lab Routing Not Working [closed]

Just to give a quick backstory of my issue, I will try to explain it the best I can. I have set up a home server running Proxmox (I would have used ESXi, however 6.7 and 7 are not compatible with my ...
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I rollbacked a Proxomox VM and now I have no sudo access

Yesterday I took a snapshot of VM in Proxmox and today I rolled it back but the user has no sudo access anymore. I can login with the user and the user is still in the list of sudoers. How can I solve ...
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Recommended Proxmox configuration for a 3 nodes cluster with 2 nodes connected to a DAS?

I am aiming to get a 3 nodes proxmox cluster with 2 nodes connected to a DAS with this topology : Circuit The idea behind this configuration is to have an HA cluster and a HA storage. What I had in ...
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2 votes
1 answer
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why does "pkg_info -Q bash" on OpenBSD give me an "empty" result?

i installed a fresh OpenBSD server on a Linux - Proxmox server with kvm. I tried to to install bash but pkg_info returns "empty": root@openbsd:~# echo $PKG_PATH https://cdn.openbsd.org/pub/...
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Linux server ignoring packets from gateway

I have a Proxmox Linux server, which is able to send and receive packets to hosts on the local network, but will not process packets from the gateway. This causes internet traffic to fail, so I can't ...
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How much ram can I use with 2CPUs

I have a question about a new server that I want to buy. This server has 2CPUs and 32gb of ram in total. My question is: can I use all the 32gb of ram for proxmox, and therefore for the vm, or can I ...
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2 votes
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Using OVH VRack, 2 PVEs can't fully communicate

In OVH, I have 2 ProxMox servers, each one containing a Firewall and a few other hosts. I am trying to use OVH vRack for private communication between them, but it is not working. Here's a summary of ...
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Can't put correct date & time on LXC container with ubuntu

I'm tryig to put correct date and time, on Proxmox LXC container with ubuntu but I can't. There are some info of my server. ➜ ~ cat /etc/os-release NAME="Ubuntu" VERSION="20.04.1 LTS (...
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iptables loses source address when forwarding to an internal virtual machine (Proxmox)

I have a Proxmox hypervisor. This proxmox is running a VM with HAProxy load balancer. I am now trying to forward to this HAProxy via iptables port 80 and 443. Unfortunately the source address is lost ...
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Bridge wifi to vmbr

Here is my networking setup: The system is running Proxmox (Debian-based) so it has a bunch of VMs. The default bridge of the system is vmbr0, connected via ethernet to a network with the 192.168.86.0/...
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Proxmox public IP for VMs in OVH

I have a Proxmox setup in OVH I have purchased 8 IPs out of which 6 are useable So I want that my virtual machines are reachable from the internet. The Ip block I have purchased 53.87.160.116/29 Ip ...
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How many KVM make sense to run ? (Proxmox) [duplicate]

The company i work from are actually using a bunch of "commercial VPS" which actually, in my point of views, are really overpriced for what they have. Having some basic and limited knowledge ...
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zfs-import@pool.service fails to start at boot

I just installed proxmox(7.1-2), setup a zfs pool and added a NFS share. But on every boot the service zfs-import@asgard.service fails to start, but if I look in the /asgard directory everything seems ...
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How to configure DHCPv6 in Proxmox without bridge?

(crosspost: Network stack exchange) I have a setup with Proxmox connected via WiFi. Everything works for my needs and IPv4 connectivity too. Now, I want to see if it is possible to do some DHCPv6 ...
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Assigning hard disks directly from the pool vs syncing back to zfs/block host

What are the specific pros and cons, perhaps even conventions, of attaching a volume to a VM directly from a proxmox zfs pool VS mounting the volume through a file/block storage solution like TrueNAS (...
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1 vote
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Slow File Transfer Macbook to Synology/Proxmox Server using AFP

Noticed slow transfer speeds of ~35 MB/s when sending a single 5 GB file from my Macbook Pro to my NAS running on Xpenology/Synology in a Proxmox VM. The NAS is first mounted onto the Macbook Pro ...
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-1 votes
1 answer
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NUT slave powering off when master reboots

I have a homelab with the following setup: NAS (QNAP TS-453D) <─usb─ UPS (CyberPower VP1000ELCD) | ethernet └> Proxmox Server The NAS is the UPS master, configured to ...
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1 vote
1 answer
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Limiting ARC Size for the proposed system

I have a pool of 5 x enterprise 12Gps SSD that I use for internal storage for a proxmox server. This pool is used to stand up VMs and containers. The problem is that it is eating up a lot of my ...
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Windows 10 guest on Proxmox has limited network speed?

Thanks in advance for any insights you might be able to provide... this one has me stumped. I'm running proxmox on my server, and I've got multiple VM's on that server.. some running windows 7 some, ...
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UDP Broadcast not being masqueraded

I have a VM in Proxmox with an IP (192.168.1.10) coming from a bridge. I have masquerading on to enable it to communicate with my network: -A POSTROUTING -s 192.168.1.0/24 -o host_inteface -j ...
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In OVH, how to connect 2 VMs, each one in a ProxMoxServer, using vrack?

Each of both PVE has 1 VM for firewall and several other VMs, organized in subnetworks, addressed with RFC1918, according to the this diagram For better understanding, this is the networking ...
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nftables natting with source IP

I have a server in a datacenter which is a Proxmox server. On the server (one of many, they are in a Proxmox cluster) I am hosting various VM's. Services on the VM's are exposed through iptables (...
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2 votes
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Proxmox on Ceph performance & stability issues / Configuration doubts

We have just installed a cluster of 6 Proxmox servers, using 3 nodes as Ceph storage, and 3 nodes as compute nodes. We are experiencing strange and critical issues with the performances and stability ...
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configure dnsmasq to give out addresses in different ranges

I'd like to give unknown clients an ip address in one range and known clients in another (that is a static one). I tried quite a lot now and don't seem to get it working. All I get is an "no ...
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Can I restore a Vzdump tar archive to an LXD/LXC container

I have a number of "tar" files created from an old proxmox 6 server, using the vzdump tool. The person that originally created them has left the company, and the company has changed it's ...
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How to get qemu watchdog working in Freebsd 12.1 guest

I am running a couple of OpnSense (based on FreeBSD 12.1) routers in qemu virtual machines in Proxmox 6.4. Promox has its own non-libvert way of configuring VMs, but to add a watchdog device, one adds ...
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How to move a linux container to a remote server running proxmox 7.0?

I am currently in the process of migrating a server running several linux containers to a server managed by proxmox. In the past when i moved a linux container to a different host i just used the LXD ...
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apache2 vnc proxy to proxmox (with intermidiate php application)

he have a php application that has access to proxmox and display the vnc console by sharing the token. this is in a apache2 server. We try to proxying the vnc requests behind apache so the end user ...
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252 views

Proxmox ARP cache causing virtual machines MAC to change?

I am having an issue with Proxmox and ARP changing the MAC address of virtual machines. arp -a returns: ipxxx.ip-51-89-201.eu (51.89.201.xxx) at fe:ed:de:ad:be:ef [ether] on vmbr0 This virtual ...
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Unable to SSH into my proxmox hypervisor from a VM

to start, here is my infra in summary : I have a Proxmox server with an IP public, I created a vmbr1 bridge from Proxmox (192.168.0.1) and I use IP 192.168.0.108 for my VM. Here is the route : 192.168....
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deciding on docker architecture setup and performance

I will need to virtualize a jenkins software architecture and I don't know which architcture will be more efficient. I need : a jenkins server an opensuse server for c/c++ 64 bits compilation an ...
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2 votes
1 answer
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Spikes on softirqs RCU monitored with NetData on proxmox container

I have a server with the following characteristics: https://www.soyoustart.com/it/offerte/1801sysgame05.xml Processor Intel i7-4790K RAM 32GB DDR3 1333MHz Traffic Unlimited Anti-DDoS Included Disks ...
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Recovering a nested PV

On my Proxmox 6.4 host, I had an LVM Thin pool that was 250GB large. I created an Ubuntu VM (which used LVM for the root partition as well) on it, but accidentally oversubscribed it, so the PV inside ...
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