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)
522
questions
0
votes
0
answers
17
views
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 ...
- 21
0
votes
0
answers
28
views
Proxmox as KVM guest can't run VMs [closed]
I installed Proxmox VE 8 as a KVM guest to try it out. I enabled nested virtualization and SVM shows up in the Proxmox shell. But I can't get any VMs to work in there, upon starting CPU and RAM usage ...
- 433
0
votes
0
answers
34
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 ...
- 1
1
vote
0
answers
27
views
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: ...
- 11
0
votes
1
answer
32
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 ...
- 103
2
votes
2
answers
59
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://...
- 23
0
votes
1
answer
61
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 ...
- 141
2
votes
1
answer
182
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 ...
1
vote
1
answer
75
views
proxmox image import creates an 50GB disk regardless of image size
If I import a disk image for vm 101 from a raw image, it will create an 50GB disk image:
# qm importdisk 101 disk.img local-zfs
importing disk '446-jenkinsmite.img' to VM 101 ...
transferred 0.0 B of ...
- 599
0
votes
0
answers
99
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", ...
1
vote
1
answer
79
views
Should I use proxmox for this use case?
So basically I need to host an web application front and back all PHP, and also a MySQL database with HA.
There will be 2 servers on different datacenters.
And I'm thinking if we should use Proxmox ...
- 145
0
votes
0
answers
34
views
LXC network routing issues
I have an LXC running Ubuntu 22.04 on Proxmox, which I'm trying to move to a new LXC running Debian 12.
Running the exact same LXC configuration somehow results in initial SSH connections to the ...
- 101
0
votes
0
answers
67
views
Docker service doesn't start on unprivileged lxc container on boot
I have proxmox with an Ubuntu lxc container where docker is installed and containers running. When I reboot my node, although the lxc container starts on boot, docker services start only when I login ...
0
votes
1
answer
114
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 ...
- 1
1
vote
0
answers
112
views
Routing 2 public IP ranges on 2 bridges
I've set up a new Proxmox 8 server, and I'm struggling to get my networking set up correctly. A normal bridge interface with a single IP range is easy enough, but I can't seem to get my 2 IP ranges to ...
- 2,040
1
vote
1
answer
92
views
Memory ballooning doesn't try to reclaim page cache
I have a host running Proxmox with some VMs on it. Due to some unpredictability with the memory usage of some applications, and wanting to give some VMs (like a DB) memory for the page cache when ...
- 13
5
votes
4
answers
335
views
Building a low-cost, high-availability cluster using Windows Failover Cluster or Proxmox
I need to build a high availability cluster (key functionality, SLA almost 24/7) for virtual machines (AD DC, FS, WSUS, Print server, one Oracle database, a few Linux (not important to business).
...
- 93
1
vote
0
answers
79
views
Linux bridge not forwarding traffic after changing bridge ports
Problem: after changing bridge-ports value of a network interface, all networking on that IP stops working. Base system is Proxmox VE 7.4, based on Debian Bullseye.
Background: I have a Proxmox VE ...
- 482
0
votes
0
answers
74
views
Cannot Access Proxmox GUI After Create Linux Bridge Network
Good Morning!
I have a baremetal server on equinix with gateway CIDR /31 (default) then I bought a new Gateway with CIDR /28 after that I connected to the server, but after installing proxmox and I ...
0
votes
1
answer
141
views
How often do you update Proxmox?
I installed Proxmox three months ago, and I have a question about how often I should run commands like apt-get update.
On Proxmox, according to forum members' rules, I installed only the default ...
- 113
0
votes
1
answer
127
views
What is the server hardening strategy when I use SSH tunneling?
I am using Proxmox with SSH tunneling. I have disabled all outside ports and connections, except for access via SSH tunneling.
In this way, what is my strategy for server hardening?
My setup:
...
- 1
0
votes
1
answer
201
views
Kernel panic initramfs: no cpio magic
Im trying to boot a proxmox that was abruptly rebooted due a power lost. When trying to boot it stops with a kernel panic. The error it shows is "Initramfs unpacking failed: no cpio magic".
...
- 13
0
votes
0
answers
63
views
Nothing but DHCP works after testing SR-IOV on Mellanox ConnectX-4 Lx
I was following the Proxmox guide for enabling PCIe passthrough and SR-IOV for my NIC, since I am running Vyos in a VM as a router. However, after undoing all the changes the NIC is not working ...
0
votes
0
answers
418
views
DHCP response not getting to VM when using a VLAN on Proxmox
I recently installed proxmox on my server, and now I'm trying to get networking in order.
The problem that I have, is that for a certain VLAN, the DHCP response from my DHCP server doesn't seem to end ...
- 101
0
votes
2
answers
961
views
Best practice to install proxmox (7 or newer) on server
i did a lot of research and i am still wondering, where to install os (proxmox). We have ProLiant DL560 gen8 and gen9.
My options:
micro SD card 32/64GB, not good because of lots of writings from
...
- 195
0
votes
0
answers
124
views
IP routing between two sites and allowing external access to both via Wireguard
I have two Proxmox notes, in two separate locations. They are connected via a Wireguard Tunnel between the two sites (A and B). This tunnels all traffic destined for the other site through the tunnel ...
0
votes
1
answer
102
views
Assign a VLAN directly to a physical interface
does anyone have an idea how to assign a VLAN ID to a physical interface under Linux?
More specifically I have a proxmox server on which Opnsense is virtualized. There are VLANs set up and on a ...
- 45
1
vote
0
answers
65
views
Where to put VLAN interface
I have a Proxmox VE 7.4 installed on a server (that's debian 11-based distro).
On this server I have 2 x 1 Gbps network interfaces. On top of them i have Linux bond (LACP mode, but probably ...
- 111
0
votes
0
answers
61
views
Proxmox: how to route traffic to CTs (VMs)
I have Promox server with 3 IPs (Main IP and 2 additional ones). Server has 3 CTs and I want to assign all 3 IPs to those CTs.
Assinging them directly to CTs/VMs didn't work (even gateway is not ...
1
vote
0
answers
152
views
Is it possible to bypass linux bridge device and assign linux vlan directly to bridge member on proxmox (Debian)?
I came up with the following situation. We have a Proxmox node with a 40gb Mellanox QSFP+ card connected to switch. The 40gb interface is added as a slave to vlan aware linux bridge. To that bridge ...
0
votes
0
answers
148
views
Mikrotik CHR with public ip behind a proxmox Eoip not work
i have this problem:
I have a ionos dedicated server i have installed a proxmox on it, i have an additional ip address for my routeros virtualized machine ionos delivered me this ip via vlan 1010:
...
0
votes
1
answer
291
views
Proxmox host cannot reach guest: TCP client retransmitting instead of sending ACK after SYN/ACK
Setup: server (HTTP server on 80) on 192.168.1.20, clients on 192.168.1.17, 192.168.1.18
Client 192.168.1.17 can connect to the server fine (Wireshark capture on the client side attached)
1 0.000000 ...
- 101
1
vote
2
answers
746
views
Proxmox VE Dedicated Server OVH - Config Issues In Network Setup With 1 Public IP
Problem: (No Internet & No DHCP)
I cannot seem to get my VM's to connect to the internet nor am I able to setup a DHCP server to automatically assign IPs to them.
Introduction/PSA for dupes: I've ...
- 121
0
votes
0
answers
105
views
Use squid to forward http(s) requests based on domainname
I have installed 5 LXC containers in Proxmox. Each container has a Apache2 webserver up and running inside, pointing to a registered domain.
So:
container1 points to example1.com and has a local ip ...
- 99
0
votes
0
answers
91
views
Understanding ulimits / process limits, or maybe something else. New processes stop opening (fork errors)
I'm a little bit lost and need some help understand what exactly is happening with my server.
So this is a Proxmox (Debian) server with several LXC containers running in it, and from time to time ...
- 1,001
1
vote
1
answer
178
views
Forward port to a VM via iptables from same bridge
I have running a proxmox server with two VMs which are connected to the bridge interface vmbr0:
Host: 10.10.10.1 (extern IP: 123.123.123.123)
VM1: 10.10.10.2
VM2: 10.10.10.3
On VM2 a load balancer ...
- 107
0
votes
1
answer
74
views
When connecting to my server through my domain, I get connection error. however, on a VPN it connects just fine [closed]
New poster here so unsure if this is the correct stack exchange.
But basically, I use NPM (Nginx Proxy Manager) to direct internet traffic to various VMs running on my hub server running proxmox.
...
0
votes
0
answers
82
views
Libreswan to Juniper. The tunnel is not going up
authentication-method pre-shared-keys
dh-group group14
authentication-algorithm sha1
encryption-algorithm aes-256-cbc
lifetime-seconds 28800
protocol esp
authentication-algorithm hmac-sha1-96
...
1
vote
1
answer
744
views
What is the best way to set up backup settings for Proxmox, not for a virtual machine?
At the moment, I'm only backing up my VMs,
but I want to also back up my Proxmox settings, important files and configurations,
so that if I need to set up a new machine/server, I can restore from this ...
- 113
0
votes
2
answers
2k
views
How to secure proxmox web ui?
How can I best secure Proxmox Web UI?
What I have done:
Added SSL
Added two-factor authentication
What I have planned:
Change default port 8006 to a random port, such as 3462
Add tunneling by SSH, ...
- 1
1
vote
1
answer
188
views
Proxmox in Hetzner with 1 IP i loss connection from outside to CT
I have a problem with my installation of proxmox... until yesterday everything was working correctly and today a website that I had hosted there has stopped working, the problem is the following:
I ...
- 121
0
votes
0
answers
37
views
Should I use a Squid on the host machine or a virtual machine?
I have a server from SoYouStart and 32 failover IPs.
I need these IPs for proxy (for scraping). Should I set up Squid on the host machine (Proxmox) or on a virtual machine like Ubuntu + Squid?
I read ...
- 1
0
votes
1
answer
136
views
proxmox - how to set recurring backup on nfs (external) disk?
I have added an NFS backup to my Proxmox setup. From the console, I am able to view and create folders and files on /mnt/pre/backup/.
However, when I select Datacenter > Backup > Add, I only see ...
- 1
0
votes
0
answers
141
views
proxmox / ovh ip failover and bridge
I have installed both Lubuntu Desktop and Ubuntu Server on Proxmox VMs. However, I don't have internet access on either of them.
I followed this tutorial, but I still don't have internet access: https:...
- 113
0
votes
0
answers
775
views
No Connection with Pivpn wireguard lxc Container on a proxmox host
Describe the issue
I can't connect to anything. Not the internet nor the local network
Expected behavior
I want if my device is connected to the wireguard vpn to surf the web and to access every ...
- 1
0
votes
0
answers
703
views
Proxmox Container - Temporary failure in name resolution
For my company i need to manage a proxmox machine hosted on OVH.
The proxmox contains some container and i've added a new one, it's a debian 10 container.
I then set the network parameters, assigning ...
- 101
2
votes
1
answer
349
views
Extremely slow MySQL writes in Ubuntu (ext4) guest on Promox 7.3-3 (ZFS) host
I'm trying out Proxmox 7.3-3 as a hypervisor and managed to install it using ZFS on my NVMe (Samsung_SSD_970_EVO_Plus_2TB_S6S2NS0T505403V)
I also installed a Ubuntu 22.04 VM and its filesystem is ext4
...
- 155
0
votes
1
answer
290
views
How to setup public ip for proxmox
I have an interesting question.
We have in company proxmox VE with public 46.xx.xx.xx/29 and private IP subnets. Proxmox hasn't got public ip and is connected on interaface vmbr0 to router with subnet ...
- 25
0
votes
0
answers
405
views
Proxmox on Hetzner, 2 IPs - 1 NIC - no subnet, routed configuration
i need help with my PROXMOX / VM network problems :S
that problem is similiarto but only similiar:
Proxmox Routed Network Configuration on Hetzner Server
i got no inet connection with my VM debian/11, ...
0
votes
1
answer
412
views
two network interfaces in LXC → Systemd is blocked for 5min (services dead)
I use proxmox to virtualize some LXCs. Recently I wanted to add a second interface on a Debian 11 LXC build of Turnkey ... but there is a weird problem with systemd. When I configure two static ...
- 45