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On previous versions of proxmox the advice was not to use unicast in a cluster with more than 4 nodes: === Due to increased network traffic (compared to multicast) the number of supported nodes is limited, do not use it with more that 4 cluster nodes. source...

I have a running cluster (5.4-13) with 11 nodes and everything is up and running until I reboot one of the nodes. Attached is the corosync.conf and the pvecm status. Everything looks OK. However, when I reboot one of the nodes, I am losing quorum on a random other node once the rebooted node is...

Dear reader, We have 11 nodes in a cluster and each node has 1 vote. Currently we are in the process of migrating this cluster to another datacentre, so a shutdown of all nodes is necessary. How can I make sure that I will get quorate once I will start up the nodes in the new location? Is it...

I was playing with some settings and created a cluster doing: === root@prox1:~# pvecm create test-cluster-01 Corosync Cluster Engine Authentication key generator. Gathering 1024 bits for key from /dev/urandom. Writing corosync key to /etc/corosync/authkey. Writing corosync config to...

One of my existing nodes died, so I restored VM's on a different node using different vm-id's. If I check the status of my cluster with "pvecm nodes" and "pvecm status" everything seems to be ok. However, if I grep on the old node name (virt016) I still see the node listed in a file named...

We are having an issue when doing a ping to a kvm VM, it results in DUP! replies. We are investigating this issue but did not find a solution yet. The situation is as follows: 1) ping from server1 to proxmox-node (no dup messages) 2) ping from server1 to VM on proxmox-node (DUP! messages) To...

We are running proxmox on intel ssd's for over a year now. Although there is not very much disk activity, the wearout indicator is still 0%, even after using it for about a year now and I'm wondering if this is correct? Attached are two screenshots of what we see in the GUI of proxmox. Can...

I really would like to give ZFs a try on proxmox. Reading several topics / forums about ZFS there is one thing I have noticed a couple of times. They advice to NEVER put your main OS on a ZFS volume. If I choose ZFS during normal ISO-install, will proxmox/os be put on ZFS? And are there ways...

We run proxmox on Supermicro systems, using local storage, Intel SSD-disks in software RAID-10 + spare. I am aware of the fact that software-raid is not adviced, but we just love software raid :) We have done several tests and we have some problems with the so called "time to first byte" on...

We have had some issues with the cluster. Right now the cluster seems to be up and running again and all VM's are online. With pvecm status, I see all nodes are ok. === pvecm status Quorum information ------------------ Date: Fri May 12 20:35:01 2017 Quorum provider...

First of all I'd like to say: proxmox rocks :) We are using Seagate XF1230-1A0960 SSD-disks. Using the proxmox GUI I see that the wearout indicator status is N/A (see attached image). However when I check the SMART-status I see attribute 177 (Wear Leveling Count) and these have the following...

When removing a KVM VM using the GUI I noticed that the /var/lib/vz/images/vm-id does not get removed. So when removing VM with id 101, the directory /var/lib/vz/images/101 still exists although the contents of the directory is empty. It might not be a problem, I'm only describing what I see :-)...

We use KVM with virtio network and for each VM we like to know how much traffic a VM generates on i.e. a monthly basis. So actually we would like to receive a monthly report: 2014-10 ===== VM100 : 239 Gb VM101: 17 GB etc. Can this be done and/or implemented on proxmox-level (would be a great...

I know that the "proxmox advice" is to use a good hardware raid controller with a BBU. We prefer however a software raid-1 configuration. The latest Intel SSD disks (i.e. DC S3500 Series) comes with data protection in case of a power loss so a BBU is not really necessary anymore. Can anyone...

Dear proxmox, I like to test the cluster-configuration on a proxmox server. The guidelines listed at http://pve.proxmox.com/wiki/Proxmox_VE_Cluster are based on a 1.x installation (at least the screenshots). Is setting up a 2.x cluster done in the same way? In other words, can I use the manual...

Suppose we have 10 VM's within the proxmox environment and each VM is a 80GB image. When using the backup-option within proxmox set on a daily basis, will it copy 800 GB each day to a backupserver (if data within a VM is modified) or will it use some kind of blocklevel backup? Gijsbert

I've installed version 1.3 of proxmox ve in a local environment. After installing and creating a virtual machine, I click the "open VNC" link. Java is installed correctly on my client-machine. The text I see in the console-window: Network error: could not connect to server: 192.168.1.11:5900...