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Hi VictorSTS. Thanks for suggesting iperf3 to run more tests. With Iperf3 the performance ratio between the 2 directions is very low. Using one queue only on the VM interface: VM → remote server remote server → VM min : 8.46 Gbits/sec Min : 7.04 Gbits/sec max : 8.54 Gbits/sec Max : 9.40...

Hi, I'm running some network bandwidth tests on an Alma Linux VM (RHEL8) and I get assymetric performances. Test is run with netcat: server: nc -l 1122 -v >/dev/null client: dd if=/dev/zero bs=4M count=1024 |nc robin 1122 The server robin is not virtualized (physical host with CentOS7). Same...

Thanks Stefan for this detailed explanation. My OS disk is fully allocated. No free space to enlarge the logicals volumes. I was not aware of the promox requierements for storage when I baught these hardware, I was not yet a promox user. I have only 2x280GB in RAID1 for the OS. But on this...

Hi, I'm again in a "mon low disk space" on my small proxmox cluster. I saw many threads about this warning but I'm unable to manage the problem. average osd use is 5% only / partition (where /var/lib/ceph is located) is 72% (19GB available) and this seems to be a problem for Ceph # df -h...

Yes, rebooting the Centos7 VM freeze the clients (I use hard mount for this). But rebooting a nfs server only VM is fast. And I have large uptimes as I can migrate the VM to another proxmox server without down time for maintenance pupose of the servers. Patrick

I'm running a NFS server in HA with proxmox. My setup is: - VM is CentOS7, network is 10Gb ethernet. - Shared storage is /home - VM disk is on the CEPH strorage shared by my 3 nodes, with 3 replication for the data. - The data disk for the NFS share is a different storage (logical disk added)...

To test a server crash (VM or node) when I've setup my HA config on 3 nodes I was using, on the linux server to crash: echo c > /proc/sysrq-trigger I think it is more representtaive than a clean shutdown.

I would like to suggest to disable root ssh access on your server. Add a local user with an umpredictable long name and a strong password and then use "su", not "sudo", with a strong password too for root. So you will have 2 differents passwords to connect and get admin rights. This will help...

My proxmox servers have a private IP and are in a specific VLAN. Only few IP are allowed to access this VLAN (only administrators desktops). Even if a user can find the server FDQN he cannot access it.

Thanks Alwin for these wise advices. They solve my problem. on one of the 3 cluster nodes / was nearly full because there were some local VM dumps in /var/lib/vz/dump (same physical partition). I had identified this (it was the main difference between the 3 nodes). But Partition was not full...

Hi, I'm running a proxmox cluster 4.4-12 for a while with 3 nodes, each having 2 osd and running a monitor. Since a few days I have one monitor down on one node and I do not understand how to track the problem. Nothing obvious for me in the /var/log/ceph . I've no recent informations in...

I've just setup a win10 VM last week using virtio-win-0.1.171 on a PVE4 cluster. Works fine but not fully tested yet.

Not really... a short test with a windows VM and solidworks /solidedge software. Without using a GPU (not enought time to set up). With Krdc it was running but no so fast as on a local desktop with a local GPU of course. But for our small need it was good enought and the test was positive. I'm...

Small HA cluster for a public research team: 2 nodes DELL R530 with 2 E5-2603 (6 cores) 32GB RAM 2 x 300GB 15Krpm drives for proxmox, Raid1 (PERC H730) 2 x 8TB drives as osd for CEPH 2 x ethernet 10G (one is dedicated to ceph) 1 node DELL R530 with 2 E5-2603 (6 cores) 32GB RAM 2 x 300GB...

Sometime I like to use applications not tailored to do everything but just what I need.;) Not using an office suite to write a phone number in a text file Not using a google search when I know the URL... This is only 200 C code lines (comments included) ! Patrick

The archive is attached to this post. Patrick

Yes, of course. I'm just using the ping command on a list of IP adresses to check the connectivity. You can modify the source to use whatever you need. May be I could attach a zip file in a next post (it is quite small) ? Patrick

I have a slightly different setup, 3 nodes in H-A with CEPH storage on a dedicated network interface. I have implemented a small daemon (in C) checking that the two other nodes are reachable via the CEPH network interface. If none of them are available the node is shutted down and H-A...

Happy birthday proxmox and thanks all the team for building such a powerfull tool in the open-source community.

Hi Wolfgang, The /dev/vda is on a ceph storage. The backup is stored on a local hard drive partition on the node It is not thin allocated image. Today I had a idea: if backup is based on dd or dump commands, disks blocks, even not used, may still contain the erased data and compression will be...