corosync

Hello, I am experiencing an issue with my cluster and would appreciate your advice. Problem description: I am constantly seeing Corosync-related messages (flapping/instability), even though there are no visible link issues. Linux does not report any port or link failures. Switch monitoring...

Hi! I am currently migrating several ESX-Cluster to PVE. We have two data centers spread across two buildings. An even number of nodes is spread across those two data centers. (e.g. 3 nodes in one and 3 in the other one) I installed a Q-Device in a third seperate room (and seperate builing on...

Greetings! We have a 3-node cluster that we're trying to add a new member to. The moment the new member joins there's a huge retransmit storm and cluster starts breaking up, eventually locking the pmxcfs filesystem and triggering watchdogs to reboot nodes. If i disable pve-cluster and corosync...

I want to set up a cluster with 5 nodes, however only three have two nics, the other nodes have only one. When I add an interface and the corresponding ring addresses to the three nodes in corosync.conf, the daemon throws the error Configuration is not valid: parse error in config: Not all...

Moin zusammen, heute Nacht habe ich in mein 2er Host Cluster geschaut und es war leider komplett rot, nichts ging mehr. Die beiden Hosts laufen nun erstmal mittels pvecm expected 1 wieder, das Cluster bekomme ich aber einfach nicht mehr ans laufen. Ich weiß, dass min. 3 Hosts empfohlen sind...

Hi all, I'm evaluating proxmox for use in an production environment. I’ve run into a recurring problem that highlights a design limitation in Proxmox VE’s cluster system (pmxcfs). When a node is removed from a cluster and later needs to re-join, the process consistently fails with errors...

Hi all, is it correct that by default Proxmox 9 in a 3 node cluster configuration with CEPH for VM migration use VMBR0 network? Current node network config does use a separate network for CEPH Cluster (10.10.10.x/24), CEPH Public (10.10.20.x/24), COROSYNC (172.16.1.x/24) and VMBR0...

Hello, I just updated my cluster to proxmox 9, and most nodes went well, except 2 of them that ended up in a very weird state. Those 2 nodes hung at "Setting up pve-cluster". And I have noticed that /etc/pve was locked (causing any process that tried to access it to lock in a "D" state) The...

Good afternoon, I recently added a third host to my cluster. Until now I had one host, and another standby, they do not share containers or VMs and High Availability does not interest me because it is a Home Lab and I make the relevant backups. To make it work for me I modified the corosync.conf...

I'm am not new to hypervisors, but I am new to Proxmox. I'm trying to build a proof of concept for my enterprise, and I'm attempting to follow best practices so not to hate myself down the road. I'm running into some advanced network configuration issues, and I am not finding clear directions...

Hello everyone. I have a 2-node PVE cluster and a PBS server that will be used for backing up the VMs running on the PVE Cluster. I wanted to add the PBS as a Qdevice in order to achieve 3 votes for quorum. As I was going through the setup of the Qdevice, I noticed that I could only specify...

Greetings Proxmoxians! I am on the cusp of building a new cluster with 3 Dell servers. Each server has two dual-port 25Gb/s NICs, for a total of 4 ports. From a high-level, I'm counting roughly 4 functions that the network needs to perform: Management access (SSH and web UI) to the hosts...

Hi, I run in my homelab a 3xnode cluster with ceph, 3xmons, 3xmgr, 3xmds. I run it for about ~3 years now. Yesterday I've installed fresh 3x nodes and migrated my cluster from old nodes to a 3x new one, which are identical (GMKTEC M5 Plus, 24GB RAM each, beautiful devices, works like a charm so...

Hello, I'm a system engineer at an IT outsourcing company. My job is to design and deploy virtualization solutions. I've used Proxmox for many years now, but only recently our company started to offer Proxmox as an alternative to ESXi/HyperV. I know Proxmox throughout and know its capabilities...

While joining the cluster with node "standby", i used ipv4 adresses only , but we ended up with this: # cat /etc/corosync/corosync.conf logging { debug: off to_syslog: yes } nodelist { node { name: m9 nodeid: 1 quorum_votes: 1 ring0_addr: 83.a.b.c } node { name...

I have 8.3.5 proxmox. After latest update I have under loop, every 2-5 seconds, receiving next message for all cluster nodes: Apr 04 22:17:04 prx-01 corosync[1488]: [KNET ] udp: Received packet on ifindex 1664013570 when expected ifindex 3 Apr 04 22:17:04 prx-01 corosync[1488]: [KNET ]...

Homelab-Umgebung. Ich habe ein Proxmox-Cluster mit 2 Proxmox-Servern aufgezogen, kein dritter Quorum-Client mit dazugehängt. Das Cluster war recht einfach einzurichten: cluster/pm1 (alle Vserver zuerst hier) cluster/pm2 (noch kein Vserver hier) Danach habe ich alle Vserver von pm1 nach pm2...

Hi, I have a two node cluster configured, home setup. I have a primary node with all the needed services running. The secondary node is actually empty at the moment and not really needed. I plan on building it up, maybe, and have it available to migrate things as needed. For the time being...

Attempting to add an "external" QDevice. Output is as follows...not sure I understand how to fix this (and on which machine)? root@pve2:~# pvecm qdevice setup 192.168.1.58 -f /bin/ssh-copy-id: INFO: Source of key(s) to be installed: "/root/.ssh/id_rsa.pub" /bin/ssh-copy-id: INFO: attempting to...

After reading through PVE CM Redundancy, I am left wondering whether or not there is any reason not to use the same VLAN for the two separate physical corosync links? I see the example shows what presumably are separate subnets, but I see no explicit mention on whether or not such a logical...