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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

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What does iostat show a different utilization for the 'dm' device?

I installed an M.2 drive into a Proxmox host this morning and monitored the disks with iostat -x 1. Why is iostat showing dm-7 is at 98% utilization, while the M.2 LVM PV (nvme0n1p1) shows only 6.8? ...
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33 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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9 views

Is there a way to make VM snapshots in PROXMOX LVM storage

Acording to official docs https://pve.proxmox.com/wiki/Storage:_LVM the LVM storage option does not support VM snapshots. You need to setup Thin LVM for snapshots to work. My question is if there's a ...
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32 views

Frequent Proxmox server interruptions in Hetzner

Unfortunately, there is a problem with server access at hetzner datacenter for some time. When we connect to the server with a KVM, we find that the server has not crashed, as if the server's network ...
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23 views

How to allow vpn clients to access lan servers

I need some help understanding how to allow the vpn clients to access servers that are on the "intranet". I have one dedicated/physical server at ovh(if that matters) with 4 additional ips. The OS ...
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11 views

How add size at bootdisk on Proxmox LXC?

How add size at bootdisk on Proxmox LXC? I use pct resize 101 rootfs 20G, I can see new size when LXC is poweroff but when I poweron it, I see old size, and it's full. Thanks
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24 views

GRE Tunnel allowing access to internal IP

I need your help with iptables because i got stuck. Explainations: What I have ? Proxmox public IP: 91.121.83.XXX Proxmox VMs private IPs: 192.168.0.101 (192.168.0.0/24) Proxmox GRE tunnel IP: 192....
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47 views

RAID5 - ZFS vs LVM+mdadm on 3 SSDs for KVM/LXC server (proxmox)

I want to configure RAID for a KVM/LXC server (it's running proxmox as a hypervisor). This server is now running on 3 SSDs in this configuration: 10GB host root partition + Btrfs partition for some ...
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21 views

Tcpdump receives packets but they are not delivered to firewall

I am working with Proxmox, OpenVPN and Mikrotik Router. When I try to connect from OpenVPN client (192.168.10.13) to VM (192.168.1.19) hosted on Proxmox I don't get any response. Proxmox host (192....
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20 views

Adding a Proxmox 5.x node to 4.3 cluster

I am performing an upgrade on my cloud cluster. I have 5 nodes which are running currently on Proxmox Virtual Environment 4.3-12/6894c9d9 I need to upgrade them to newest 5.x version. The upgrade ...
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73 views

Proxmox doesn't recongnize increased swap space

So I tried to increase the swap LV from 8GB to 16GB, but Proxmox web panel doesn't seem to see the change. The LVM increased the space, but Proxmox haven't changed it's panel. Originally lvdisplay ...
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51 views

How to recover [unknown] disk from LVM2 on Proxmox

On my server, i have 5 disks. The disks are configured as follows: Raid 1 (Disk 1 + Disk 2) [320gb each] - Proxmox installed Raid 1 (Disk 3 + Disk 4) [1tb each] + HDD (Disk 5) [1tb] = totalizing 1....
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26 views

Move VM with custom kernel/initrd to Proxmox VE

I've got a KVM image running on CentOS that I'm trying to get running on a Proxmox (5.20) Hypervisor. The current VM (I think it may have been a p-v at some point) has the following options in the vm ...
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68 views

Disable thin provisioning (sparse files) in proxmox

I'm using Proxmox Virtual Environment to run few virtual machines. I use raw storage format and I need that the disk is fully pre allocated when created so it does not grow. The proxmox says that ...
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80 views

Proxmox LAN Routing

I am attempting to set up my first Proxmox hypervisor as a test server. I have managed to install Proxmox and set up some VMs however I can't get machines on my local LAN to connect to the Proxmox VMs....
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159 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-...
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36 views

Public IP not resolving

I have a Debian/Proxmox sever running and trying to add a public IP which is not resolving and im trying to figure out if its a config issue or out IT network infrastructure (which we do not manage) ...
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41 views

Proxmox internet via NAT issue

This is the standard setup for NAT? So my VM's behind vmbr1 should be able to access internet via NAT. However there is an issue with my vm guests unable to connect to public ip addresses. Could ...
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148 views

Proxmox 5 containers are not able to ping outside

Im using a KS server, I've installed Proxmox 5.2 (the one preinstalled by OVH). The container is using Debian 8 The problem is that: From the container I can't ping anywhere, with: ping 8.8.8.8 I get ...
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18 views

Setting up a Proxmox device to allocate IPs to KVMs on isolated networks

I am a novice attempting to dive into low level networking and I'm not having any success. Documentation regarding BGP and level 3 / 2 switch routing is sparse and assumes you know a huge amount. I'...
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164 views

Poor disk performance on KVM guest

I have a server running Proxmox and some Linux VMs running on it. On the host, I get 200+ MB/s write to the disk On a VM, I only get around 50-60 MB/s Caching is disabled for all VMs. I'm using ...
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161 views

Proxmox 5.2 in OVH - second IP of the LXC containter not working

I have Proxmox 5.2 server in OVH. I have few LXC containers and everything work just fine except when I add a second IP to the container it doesn't work - inside in the container the interface exists ...
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96 views

How to eject CD/DVD of KVM-based VM with `qm set`?

I am using Proxmox VE 4.4 and I am puzzled how to eject a CD/DVD drive that is currently configured. Assume that the ID of the guest VM is set as the environment variable vmid. Currently the ...
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296 views

RAID 10 with SSDs on LSI 9260-8i has bad performance

I am trying to get a raid 10 running with LSI 9260-8i (IBM M5015) and 4 x Samsung 850 Pro 512GB SSDs. The problem is, that the resulting sequential write performance is really bad (< 100MB/s). ...
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21 views

IPTables DNAT from inside/Masquerading

i have the following setup: vmbr0 is my WAN with Public IP, vmbr1 my LAN with Private IP's. Now i do DNAT for certain ports on vmbr0 to an IP inside the LAN: -A PREROUTING -i vmbr0 -p tcp -m tcp --...
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213 views

How to restore Proxmox VMs on a new node?

After a reboot, my usual proxmox server won't boot. Unfortunately, I had no backup plan. :-( Here is the output of the error message : [ 81.006231] print_req_error: I/O error, dev nbd0, sector ...
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66 views

OpenVZ container with different subnet public IP (using venet)

I am using Proxmox 3.4 with OpenVZ and venet. In various servers, everything is working fine. But in a new dedicated server, I cant ping my only container. The public IP of the HN is 158.69.241.xxx ...
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50 views

When running apt-get dist-upgrade on a PVE host, (when) will this affect running guests?

So my question is on a Proxmox VE host (let's assume 5.1 in case it matters) when I run apt-get update && apt-get dist-upgrade and decide to go ahead with the installation of package updates, ...
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24 views

mounting hard drive that is passed to VM

I'm running proxmox and I was previously passing a hard drive (ext4 data drive) as iSCSI to a linux VM. Everything was good. Then I decided to pass the PCI SATA controller to the VM instead of just ...
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59 views

Reading iostat utilization with ZFS zvols

I am having a hard time understanding the output of iostat -x with specific regards to ZFS zvols. I'm running Proxmox 4.4, fully updated and encountering some generally poor IO performance. While ...
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152 views

Virtual IP on a KVM virtualized PfSense

I encounter some difficulties to setup a virtual IP in a PfSense running on a KVM. My server is a Proxmox, running two VMs, a PfSense and a LAN webserver. Theres are two OVS Bridges, a WAN one and ...
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241 views

Proxmox v5 Email Gateway

I have a problem with the getting the following home network topology going, where the POP servers don't respond to outside requests, but they do internally eg on 10.0.2.20. port 25 - smtp - gets ...
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245 views

Proxmox: Unidentified network on each reboot for Windows hosts

Since about 1 year I always have the same error with Windows guests: on each reboot, Windows says the network is unidentified. So the network card is named "Ethernet 8" then "Ethernet 9" then "...
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80 views

CephFS needed if you only need block storage?

I'm looking into building a CEPH cluster as a storage solution for our proxmox cluster. It's unclear to me if I need to set up a metadata server too, because this is needed for CephFS but I think ...
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1answer
228 views

Proxmox switched IP now cant edit vm definitions

I have Proxmox VE 5.1-35. Switched the IP address and now I cant seem to modify any the VM definitions: I get an error about permissions: I'm not much of a linux permissions debugger so I'm a bit ...
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445 views

Can I remove a disk from a zpool raidz2?

Unfortunately I do not really understand zfs. I have a Proxmox 5 node with 5 300GB disk in raidz2. History: zpool create -f -o cachefile=none -o ashift=12 rpool raidz2 /dev/sda2 /dev/sdb2 /dev/sdc2 /...
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1answer
211 views

Linux OOM: Trying to understand memory statistics / mismatch with expected values

I am trying to understand why the OOM killer has reaped a process on a KVM virtual machine running with 1 gigabyte of memory. While I do already know that running Linux machines without swap is not ...
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554 views

Forwarding traffic with one ip proxmox

I have a hetzner dedicated server, and i've installed proxmox. I have only one ip and i need to forward traffic and ports to VMs. I've followed proxmox network tutorial with no success: can't access ...
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1answer
79 views

ProxmoxVE unable to login from Server native CLI

Something Odd just started happening with one of our development server Nodes. Suddenly I'm not able to login as "root" from the ProxmoxVE (5.0-30) from the native CLI. The funny thing is that we can ...
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1answer
187 views

Proxmox sets the same MAC to the bridge

I have three nodes in a Proxmox cluster under a Cisco Switch. When I sniff the traffic with an external PC I observe that when pinging from one node to the other the packets are duplicated. /etc/...
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3answers
94 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 ...
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38 views

ZFS on ramdrive optimal settings

After failing to configure ZFS for file creation and deletion without subsequent disk IO (Ramdisk like ZFS behavior), I'm creating ZFS over ramdrive. What to do with compression (but that part I ...
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1answer
232 views

forwarding proxmox vnc websocket with nginx

I installed nginx in order to be a lazy person and just go to proxmox.domain.com instead of proxmox.domain.com:8006, but now I can't access the VNC client when connected to the first address, although ...
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112 views

How to transfer a LXC container without stopping?

How i can migrate(copy) a LXC Proxmox container (from another server) to a Proxmox LXC container without stoping LXC? It's possible?
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692 views

install grub in a usb and boot proxmox from another drive

Good morning my friends! I'm tryng a solution before buy some new hardware. So this is my situation: I have some beautifull hp dl360p gen8 that comes with an p420i hardware raid controller. What ...
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354 views

No quorum in proxmox 3.4 cluster

Good day to everyone. I have three servers. Trying to get a cluster. Just write in cli on node1 (master) pvecm create prox-test and pvecm add "ip of the master node" on node2. But cluster doesnt work,...
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2answers
40 views

How to connect virtual machines from different proxmoxes?

I have cluster of 3 proxmoxes and I want to create shared network to connect virtual machines from different physical machines. Virtual machines should be able to see other machines from their network,...
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435 views

Proxmox on local network - No IP for the containers

I recently discovered the existence of Proxmox, and before putting that on a dedicated server, I wanted to test this at home. To do this, I put a pve 5 ISO on VirtualBox and assigned it an IP ...
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331 views

Proxmox Ceph OSD Fault

I am running Proxmox with 2 nodes and Ceph. Recently I had a drive die and replaced it. In the process of trying to initialize it as an OSD, all I get are fault errors: 2017-07-31 15:05:05.278499 ...
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1answer
836 views

LVM: Logical volumes mapped size much bigger than filesystem used disk space

In Proxmox we use LVM to create discs (logical volumes) for our VMs (LVM thin provisioning). Recently we found out our volume group is almost full even when all VM discs are almost empty. Problem ...