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I finaly found a solution to have some resilience when the CEPH network fails on one node: I've implemented a small daemon testing (with ping) the availability of the two other nodes on this CEPH dedicated network every minutes. After 4 failures to reach all the other nodes, the current node is...

I've simulated again a communication failure on the CEPH network, unplugin the network cable on node3 where the VM was running. OK, I can stop the VM from the graphic interface. May be last try has failed as first I had requested à migration of the VM which was waiting for ever. When the VM is...

Redundancy at this level is not possible as for security reasons the third node is not in the same building and I've only one physical network support between the two buildings. Isn't it possible to kill the VM in this situation ?

Hi Thomas, Yes, when I say frozen, I mean that the VM do not answer anymore to ssh and NFS access on the exported partition is not working on the Client. I've not tested connecting to the VM from the node itself. But the VM state is running on the web interface may be because it is using a...

Hi, I've set up a 3 nodes cluster with CEPH (1 disk/node) and High availability. I'm in the testing step now (not in prod) and I spend some time to broke the config and check how proxmox recovers. I fall in a freezed situation where: - I have a separate network for CEPH - my linux VM is running...

Thanks Tom I was focusing on OS and data storage, forgotting the cdrom! This is the main difference between the proxmox training session i follow last year and doing again the same config some months later.... but alone in front of my cluster this time :rolleyes: Live migration is running fine...

I have a cluster of 3 nodes proxmox VE 4.4-12/e71b7a74 with CEPH storage set up (one pool). I've created a Linux CentOS7 VM in the CEPH storage pool I've added a disk in this VM, located in the same CEPH storage pool, to store data with the "No Backup" flag because I do not want to backup these...

I've tryed an update of all the nodes. Situation was worst on node3 as I fell in "crit: cpg_initialize failed: 2" messages returned by "systemctl status pve-cluster", and "Cannot initialize CMAP service" messages returned by "pvecm status" command... So (I'm not in prod) I decide to try to...

I'm setting up a new cluster with proxmox 4.4-5. on 3 identical nodes. The cluster was setup in unicast (as multicast was not working) then moved successfully to multicast since the network config allows now multicast. I'm in the step of installing CEPH. Yesterday I reboot the third node and...

Thanks Udo for this explanation. I was thinking that installing a new VM will lead to show it on all the nodes, even if it will run only on one node. With "pvecm expected 1" I can stop the node runing my VM and restart it later on the other node by hand. It works. Now i've to investigate split...

For several weeks I'm trying to build a PVE cluster (not H.A. at this time) with 2 nodes for testing (so I'm allowed to break everything!). I've understood that 3 nodes is better but I've only 2 and I read that it is possible to do this. My documentation is the wiki and "Proxmox High...

I've setup a static naming of ethx interfaces via an udev rule, based on the mac addresses. Seams to work fine with proxmox. On the first host file /etc/udev/rules.d/70-persistent-net.rules contains: SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="14:18:77:47:a4:9a"...

I'm using proxmox 4.2 on a computer with 10 network interfaces: On board: 02:00.0 Ethernet controller: Broadcom Corporation NetXtreme BCM5720 Gigabit Ethernet PCIe 02:00.1 Ethernet controller: Broadcom Corporation NetXtreme BCM5720 Gigabit Ethernet PCIe 03:00.0 Ethernet controller: Broadcom...

So this means one drbd volume / VM, I'm right ?

Just to be sure I'm understanding the conclusions of this thread could you confirm that I do not need cluster lvm when building a volume group (for VM images) over a drbd storage shared in primary/primary mode between two pve cluster nodes ? (Using proxmox 4.2)

Thanks Fabian for this details. Finaly I wasn't able to setup drbd9 and I was not needing it's improvments . So I follow this tutorial ton downgrade to drbd8 ans it runs fine. http://coolsoft.altervista.org/en/blog/2016/08/proxmox-41-kernel-panic-downgrade-drbd-resources-drbd-9-84 I'll try to...

It was following the prodedure detailed in "Proxmox High Availability" book from Simon M.C. Cheng but this book I've just baught seams outdated! I've a similar problem I think with drbd on proxmox: aptitude installs drbd-utils 8.9.7-1 on this 4.2 proxmox release but when drbd is started, the...

Is there a tutorial on how to do this ? I'm not familiar with debian packaging, mainly using rpm packaging. My install of freshly dowloaded iscsitarget-dkms packages on the net have all failed until now... Will I have the same problem with drbd ? I'm trying to set up a test HA proxmox cluster...

Using Proxmox 4.2 whith kernel: # uname -a Linux proxmost1 4.4.16-1-pve #1 SMP Wed Aug 31 15:14:37 CEST 2016 x86_64 GNU/Linux trying to install iscsitarget and iscsitarget-dkms fails with: # apt-get install iscsitarget iscsitarget-dkms ... Building module: cleaning build area.... make...

Could it be related with this old bug in the debian 3.4 kernel version ? https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1245938