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We need some clarification. omping for the nodes 10.40.20.84 and 10.40.20.20 is working: 10.40.20.84 : unicast, xmt/rcv/%loss = 5/5/0%, min/avg/max/std-dev = 2.790/2.868/2.925/0.060 10.40.20.84 : multicast, xmt/rcv/%loss = 5/5/0%, min/avg/max/std-dev = 2.797/2.882/2.940/0.063 10.40.20.20 ...

Hello Wolfgang, ok, thanks for the info. Having issues with mcast, and configured to use udpu, the pvecm add on the 2nd node does end up in a desaster, as it is waiting for quorum, and not getting any. Which is the recommended way to add a new node, and configure it to connect / use quorum...

Is there any way like pvecm add NOdEIP -use_ssh to do the same for pvecm addnode ? Is there any way to change the node's name afterwards? Having # pvecm status Quorum information ------------------ Date: Mon Oct 1 16:10:23 2018 Quorum provider: corosync_votequorum Nodes...

Hello Thomas, unfortuenately I always get: # /usr/sbin/corosync-qdevice -d -f Initializing votequorum shm size:1048589; real_size:1052672; rb->word_size:263168 shm size:1048589; real_size:1052672; rb->word_size:263168 shm size:1048589; real_size:1052672; rb->word_size:263168 Initializing local...

Hello Thomas, this sounds promising. Do you have some more information than on the Post mentioned? A mini-howto might be helpful, e.g. which commands and firewall settings do I have to run on an external 3rd node (e.g. debian) to privide such a qnet quorum, and which commands do I have to run...

Is there a way to update cluster information on master node, using something like pvecm update cluster -bindnet0_addr INTIP ? Any help is appreciated!

This might help https://pve.proxmox.com/wiki/Separate_Cluster_Network .

Is there a way to configure the pvecm without using multicast? Is there a way using pvecm create cluster to force to use the internal, and not the public IP Address? We have proxmox nodes which own a public IP Address which automatically is used for cluster-management. I was able to run a...

Ok, I got it! systemctl stop pve-cluster.service # make local pmxcfs writeable on local node /usr/bin/pmxcfs -l touch /etc/pve/firewall/cluster.fw # now it works again! # Set quorum to 1 pvecm expected 1 Still the question - How can I define a quorum for my master node, e.g. an iSCSI disk...

Now I know, why I am read only on my master node https://pve.proxmox.com/wiki/Proxmox_Cluster_File_System_(pmxcfs) as I do not have a quorum. But, how can I get it writeable again? How can I define a quorum for my master node, e.g. an iSCSI disk?

On new node I have: # pvecm status Quorum information ------------------ Date: Wed Sep 26 22:23:19 2018 Quorum provider: corosync_votequorum Nodes: 1 Node ID: 0x00000002 Ring ID: 2/12728 Quorate: No Votequorum information ----------------------...

Having created a cluster using on master node pvecm create CLUSTER and added a new node using pvecm add EXTIP -ring0_addr LOCALINTIP Please enter superuser (root) password for 'EXTIP': Password for root@EXTIP: ********...

Is there any possibility to snapshot the "non shared" disks, and only keep the others out from the snapshot?

The solution is easy, but I am not quite sure if really correct: * Stop VM * Just add the disks in the Configuration File "/etc/pve/local/qemu-server/1001.conf" and "/etc/pve/local/qemu-server/1002.conf" scsi1: pve:vm-1001-disk-sh-1 scsi2: pve:vm-1002-disk-sh-1 scsihw: virtio-scsi-pci *...

According http humblec com /how-to-share-a-disk-to-more-than-one-vm-using-libvirt-or-what-sharable-flag-do-in-libvirt/ there is the possibility to flag a disk image as shared between more than 1 VMs. How is this achieveable using proxmox? running pvesh create...