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Thanks for your reply. I know these settings. But I'm not sure what they really do in combination with an external ceph cluster. We already use direct sync and this did not prevent the corrupt filesystems. Is there any layer involved that explains that?

I'll rephrase my question: which cache settings for Proxmox (librbd) and Ceph will prevent this? Is there a way to completely disable I/O caching for Proxmox VMs having their disks on ceph storage?

Hi everyone, We are running a cluster (version 8.2.7) that is connected to a separate ceph cluster running reef (18.2.4). It now happened two or three times over the last years that a node restarted with a hard shutdown/reset. We weren’t able to find out what triggered that. The Node came up...

Hi everyone, I'm evaluating Ubuntu cloud images on Proxmox like mentioned in the docs [1]. Cloud images are uploaded as *.img files to my ISO storage. Working with qm commands everything works as expected: qm create 9000 --memory 2048 --net0 virtio,bridge=vmbr0 --scsihw virtio-scsi-pci qm set...

Good point. Makes sense now.

Thanks for your fast reply and for pointing to the definition. Unfortunately Sys.Modify is a way too high privilege for our user. To be honest, I don't understand the connection between uploading ISO files and Sys.Modify (create/modify/remove node network parameters [1]) and Sys.Audit (view...

Hi everybody, I have setup a user (PVE realm) in my cluster hat has all Datastore.* privileges. This user can upload ISO images but cannot use Download from URL. The button is disabled. What privilege does this user need to use this function? Regards and Thanks.

Hi everybody, I'm working on a (scripted) procedure to shutdown all VMs, Proxmos Servers and Ceph Servers in case of a power outage. Most VMs are configured for HA and all these VMs stay up and running after "pvenode stopall" ist executed. VMs without configuration for HA are stopped as...

Hi everybody, Yesterday we started installing updates on our 7 node cluster (PVE 7). We installed the updates on one node after the other. After the third node had finished installing all 7 nodes restarted unexpected and without clean shutdown. I think (but did not find evidence) watchdog and...

I think I was able to reproduce this and to me this seems to be an issue with nginx and Proxmox 5.1: https://pve.proxmox.com/wiki/Web_Interface_Via_Nginx_Proxy This setup also did return empty noVNC windows in ~50% of my tests. Right now I have no clue why. I will start a new forum thread for...

The testlab I used to work this out does not exist anymore. Give me some time an I'll try to figure ths out in a virtual lab...

Hi Editor, I did not experience this. What version are you using?

Hi, short answer: no you cannot. Ceph network setup is explained here: http://docs.ceph.com/docs/master/rados/configuration/network-config-ref/ Regards, Dirk

Hi everybody, can someone provide the (VLAN) multicast / igmp configuration for DELL PowerConnect switches? I,ve already read https://pve.proxmox.com/wiki/Multicast_notes but I'm unable to port the given setups (Juniper, Cisco, HP) to our stack of two PowerConnect 5548 switches. Many Thanks!

Hi everybody, I'm looking for a way to switch from softdog to ipmi watchdog without restarting my cluster nodes. pveversion: I already configured the ipmi module as mentioned in https://pve.proxmox.com/wiki/High_Availability_Cluster_4.x#IPMI_Watchdog_.28module_.22ipmi_watchdog.22.29 cat...

Not 100% sure, but to me this looks like a problem on the KernelCare side: Their licensing page (show all servers) does not respond.

My Proxmox nodes are placed behind a firewall and I do not allow direct access (to port 8006). Management can only be done via VPN and VM traffic is separated and goes unfiltered. If you do allow direct access the user will be able to login and do whatever he is allowed to do. What do you want...

Hello, This file seems to be only on 5.x Beta servers and that is what I did install for my tests: PVE version: proxmox-ve: 5.0-2 (running kernel: 4.10.1-2-pve) I did not see that until now. File has been attached.

Solution (at least for me): https://forum.proxmox.com/threads/novnc-from-remote.34634/#post-169844

After a long time struggling, I finally found a solution to this. But first of all many thanks to all forum posters also trying to get this working and sharing their results – that helped a lot. The following is a brief description of my setup: Starting point is my lab cluster with tree nodes...