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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Hetzner 1 IP + Proxmox + OPNSense and NAT

I have a server in Hetzner with 1 public IP... Inside I have Proxmox installed, where I direct all traffic to a virtual machine with OPNSense. this is my /etc/network/interfaces source /etc/network/...
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Proxmox 8.0 reports "mce: [Hardware Error]: Machine check events logged"

I am running a proxmox 8.0 server with the specifications below. FYI, I updated this in proxmox 7.4. CPU: Ryzen9 5950X RAM: Samsung DDR4 64GB ECC-Unbuffered (32GB x 2) m/b: tuf b450m-pro gaming VGA: ...
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Wireguard DNS failure to resolve

It's always DNS... I'm trying to set up a WireGuard server in an LXC container running on Proxmox. The VPN works in that all the local IP addresses are accessible but I can't get DNS working despite ...
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Proxmox linux bridge has binded ip which not works 50% of time

I have default proxmox install on Vultr baremetal server It has bridge like this root@ed2:~# cat /etc/network/interfaces auto lo iface lo inet loopback iface enp1s0 inet manual auto vmbr0 iface ...
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Dedicated Server + Proxmox + OPNSense + IPv6 Support for VMs in LAN

I am struggling setting up a working IPv6 network for VMs connected at OPNsense LAN interface. The provider (Hetzner) has given me a /64 IPv6 network: 2a01:4f8::::/64 Somehow I am able to create a ...
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1 answer
5k views

How to resize Partitions on Proxmox?

Hey im Hosting Proxmox on a Small Hosting Provider and after i added more Space to my "sda" Proxmox refused to start and i wasnt able to go on the WebInterface. I still was able to go into ...
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Ansible playbook to create a new storage

I'm trying to create a new storage in my proxmox node with an Ansible playbook, but this ends up having no free space, all the space is used. I want to do this from the playbook and not from the ...
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HP Proliant ML110 G7 Won't Boot from USB

I have a problem, my HP Proliant ML110 G7 does not want to boot via USB, even though previously there was no problem when installing ubuntu, but now when I want to install proxmox, it seems that the ...
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1k views

How does the 'stop' mode in Proxmox' vzdump backup tool work?

So i'm currently using vzdump with the parameter --mode stop. In the description it says that the VM gets shut down before the actual backup starts and after the backup has been started the VM gets ...
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UFW is not filtering traffic routed through bridge

I am experiencing a case where UFW is not blocking packets coming from a VPN host, going through the VPN interface, then through a bridge and finally to a VM. I could configure another firewall on the ...
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Proxmox, iptables connection refused on port 443 from different nodes if forward to LoadBalancer

having some problems with port forwarding on dedicated machine running Proxmox. I have create an LXC-Container for LoadBalancing and forward all incomming request on port 80 and 443 to it. If I am ...
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Grub showing "attempt to read or write outside of disk 'hd0'" error when running in a proxmox VM

After installing a Debian 11 in a proxmox VM (with packer), grub would fail to boot into the newly created VM showing the error attempt to read or write outside of disk 'hd0'. When installing a VM ...
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Best Practices for Proxmox Backup Server(local or SAN)

I'm looking for some advice on optimizing my Proxmox Backup Server setup. Here's my current setup: I have three Proxmox hosts, each connected to a SAN via iSCSI with dual fiber switches. Additionally, ...
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1 answer
152 views

VM behind nat on Proxmox cannot reach port from internal network

The issue is that I am able to reach port 25 from outside (public internet) to the specific machine in the local network behind NAT, but cannot reach to port 25 on public machine e.g. hotmail-com.olc....
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pveproxy keep restarting cause my server to freeze on proxmox

The problem i have with this server is the hardware and the OS is running but after 2 days on 10/02/2023 it just crash already gain more times i could remember and it just freeze and doesn't run. i ...
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Hetzner 1 Public IP + Proxmox + OPNSense

I have the following problem, I have a dedicated server in Hetzner with 1 public IP, I must install a Proxmox, a virtual machine with OPNSense to use as a router... and the other virtual machines ...
1 vote
1 answer
390 views

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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Postfix/Dovecot relay or proxy?

I'm trying to figure it out how to reverse proxy based on condition email servers or how to deal with sending/receiving emails from different servers on only 1 public IP address? My current ...
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2 answers
5k views

Proxmox network setup - single IP multiple VMs

I'm setting up my first Proxmox on a dedicated server. The bare metal provider offered me a server where I've installed Proxmox and a single IP attached to a bridged interface. Here is the ...
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266 views

Zpool Import, one or more devices is currently unavailable

I know this is a pretty common question, but I haven't found a situation quite like mine. To cut it short, I had a ZFS pool on my home server on bare metal of proxmox, wanted to move it to an open ...
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Why is /etc/mtab a relative symlink

I've just spent a few hours trying to figure out why NFS exports were not working on a Proxmox (based on Debian) server. "Not working" in this case means that the mount command times out on ...
2 votes
3 answers
5k views

Erratic (terrible) Disk Performance I/O (Debian/Proxmox)

Summary I'm seeing dramatically fluctuating I/O performance on a ZFS SSD mirror in Proxmox VE 7 (Bullseye). I'm simply too much of a novice to be able to track it down on my own. Details This is VERY ...
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1 answer
5k 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 ...
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Extending LVM on virtualized ubuntu server

Ok, I hope I can explain this correctly. I am running ubuntu server on proxmox. Unbuntu is running my docker instance. My LVM i originally assigned it is full and I added more storage in proxmox ...
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229 views

Adding SAS/RAID controller disables network ports. Why?

I've built a NAS that has been running well for months. I recently decided to add a LSI MegaRAID SAS 9260CV-8i L3-25377-02B 8 Port 6GB/S SAS RAID Controller to it with a couple of additional 12TB HHDs ...
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176 views

Create internal private network for VMs

I have a linux server with some VMs (proxmox). Currently, they each have a public IP assigned from a rather small block, let's say 200.0.0.0/28, and I'm running out of address space for new VMs. This ...
3 votes
1 answer
6k 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 ...
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1 answer
5k views

"Authentication key already exists" error while adding computer to cluster proxmox

I had 2 computers running proxmox which were set up in a cluster called "cluster1". For simplicity the computers were named computer1 and computer2. computer1 was the primary, and computer2 was added ...
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df reports zfs used space as 128K, not the actual used space

I have a ZFS mirror pool in my Proxmox instance. I am trying to get it to mount to an LXC container read-only (preferably not giving full filesystem access) so I can have Homepage detect the used and ...
1 vote
1 answer
4k 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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Proxmox high RAM usage

I'm currently running a Proxmox PC with 16GB of RAM. This system hosts 2 VMs and 1 LXC. VM-1: This VM is allocated 6GB of RAM and runs Jellyfin along with other ARR projects. VM-2: This VM is ...
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How to force AD resync on ProxMox firewall version 5.2.1?

Does someone know how to force Active Directory resync on ProxMox firewall version 5.2.1 since the "pveum realm sync" command is not available yet on this outdated version? pve-manager/5.2-1/...
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Proxmox cannot route port from network bridge

I set up proxmox instance, all is working fine but i have a problem with port forwarding i have: server A with PUBLIC IP 1.2.3.4 and it's dedicated server (proxmox) server B (VM on server A) in bridge ...
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1 answer
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apache redirects to local IP on virtual machine

I'm having a problem with my apache setup. I'm using a Proxmox server with multiple virtual machines and only one public IP. Apache runs on the Proxmox host and forwards the requests to the virtual ...
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2 answers
3k views

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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294 views

ansible proxmox inventory plugin vault

Hope you're doing well. I got a very basic question about ansible inventory plugins , specifically the proxmox one : https://docs.ansible.com/ansible/latest/collections/community/general/...
5 votes
1 answer
25k 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 --...
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2 answers
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How can I add an additional working IP to a VM?

I have 2 websites working fine on the same IP (92.46.87.48). Is a ubuntu server on a VM. Now I need to assign one ip for every website. I edit the /etc/hosts fine, I just buy an additional IP and now ...
2 votes
1 answer
394 views

MariaDB regularly freezes every 1-2 days

I'm using MariaDB on Ubuntu 22.04 running on a Proxmox container (LXC). I have two instances for two different services, but since upgrading from 21.10 to 22.04 both instances completely freeze once ...
3 votes
1 answer
333 views

Proxmox: Good Idea to use LVM thin together with LVM-Caching

I want to migrate my bare metal Debian server into Proxmox. My existing server uses a 120GB SSD and a 8 TB HDD. The HDD is cached on SSD (20G), which improves (read) performance a lot. Here are all my ...
1 vote
1 answer
122 views

Duplicate LV names after cloning a disk with clonezilla

I have cloned my bare metal installation of Debian Bookworm on LVM to Proxmox VE. The cloning was done via Clonezilla (remote), disk to disk. The Disks were the same size but I'm unaware if I selected ...
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1 answer
933 views

How i can init kubeadm on containerd or cri-docker?

kubectl version --client `Client Version: v1.28.1 Customize Version: v5.0.4-0.20230601165947-6ce0bf390ce3` kubeadm version `kubeadm version: &version.Info{Major:"1", Minor:"28", GitVersion:"v1.28.1", ...
2 votes
3 answers
227 views

Lightweight HTTP to HTTPS redirect

We are running a Proxmox server, which I have configured using IPTables to redirect port 443 to the proxmox port 8006. What would be the lightest way to redirect anyone trying to access http://...
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167 views

Proxmox LXC Networking with public IP

I have a bare-metal Proxmox server running with two public IPs. The initial configuration has already been done, and the containers are running with a NAT and a private network. I currently have 2 ...
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Unprivileged LXC - Cannot set tx queue length

I've installed and configured OpenVPN server on unprivileged LXC. Everything works fine except for one problem/warning: Cannot set tx queue length on tun0: Operation not permitted (errno=1) My tun0 ...
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39 views

Move applications and DB to docker or vm

I have one server with one public IP. Apache2 is installed. Mariadb is installed. There are about 50 identical Java applications running on Tomcat on the server. The applications are running on some ...
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1 answer
307 views

can't login to virtual machine in proxmox due to special sign in password (alma linux)

Friends of the forum, I feel desperate trying to solve this problem. Yesterday I had to make a backup of a server that was hacked. This server is called primary. When I got hacked, I set up a new ...
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1 answer
544 views

How to set up OMSA on Dell T610 with Debian 12 based OS (Proxmox VE 8.0)

Dedicated server noobie here. I have a proxmox server on a new (to me) Dell T610. I have a couple of disks in a RAID array that I will expand soon, but for that I read that the Ctrl+R RAID BIOS is not ...
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1 answer
1k views

Proxmox error on vmbr0

I can't access to my pve due to networking error: error: vmbr0: bridge port enp5s1 does not exist interface file: networking status: Note: The second bridge work ok, the modem and external ip ...
2 votes
1 answer
2k views

Many segfaults, RAM failing?

I have a Proxmox installation that is unstable, both the host and LXC containers crash. I to find the fault I have tried swapping RAM, CPU and MB. I also did a fresh reinstall. But I'm still getting ...

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