ceph

I have a 3-node PVE 7.4-18 cluster running Ceph 15.2.17. There is one OSD per node, so pretty simple. I'm using 3 replicas, so the data should basically be mirrored across all OSDs in the cluster. Everything has been running fine for months, but I've suddenly lost the ability to get my OSDs up...

Hi! I have made a lot of tries, changes of version, re-install of monitors and everything… and not I know a lot more than I did before, but stil I don't understand why this happens: remove any existing monitor from /etc/pve/ceph.conf remove any monitor folder: /var/lib/ceph/mon/ceph-* on node...

I wanted to start a short thread here because I believe I may have found either a bug or a mistake in the Proxmox documentation for the pveceph command, or maybe I'm misunderstanding, and wanted to put it out there. Either way I think it may help others. I was going through the CEPH setup for...

I have been using Cloud-Init for the past six months and Ceph for the past three months. I tried to set up Cloud-Init to work with CephFS and RBD, but I am having trouble booting a basic virtual machine. Is there a post or tutorial available for this particular use case? I have searched...

Hi, Has anyone experimented with ceph stretch pools that seem to have appeared in squid? (not stretched clusters) It seems rather new, but rather interesting, as it may not require the whole cluster to be set to stretched, while still dealing with the guarantee of OSDs and monitors being on...

Hi I have a quick question about Ceph. Originally when i installed Proxmox I had added all versions of Ceph repo. I added Quincy and Reef and Squid repositories, honestly i don't know much about Ceph and didn't think much of it when adding all 3 version repo's, and don't know if anything was...

Hello all, I have a 3-node cluster set up using the guide here: https://packetpushers.net/blog/proxmox-ceph-full-mesh-hci-cluster-w-dynamic-routing/ Everything was working fine when using Ceph Quincy and Reef. However, after updating to Squid, I now get this error in the health status...

Hello. I have three similar computers. Each of them has 2 similar-size disks. I installed PVE on one of the computers and configured its two disks as a ZFS mirror during installation. I recently did the same on a second computer and joined them as a cluster. I was about to do the same for...

Ceph is great, but it needs some resources above the theoretical minimum to work reliably. My assumptions for the following text: you want to use Ceph because... why not? you want to use High Availability - which requires Shared Storage (note that a complete solution needs more things like a...

Hello, i am planning to move my one node Proxmox server with VMs to a new 3 node Cluster with Ceph Pool. Now are my questions: 1. Whats the best way to move the VMs to the according Ceph Pools on the Cluster, with minimal downtime. 2. Is there a way for testing to just copy a VM from the...

Merry Christmas, everyone, if that's what you're into. I have been using Ceph for a few months now and it has been a great experience. I have four Dell R740s and one R730 in the cluster, and I plan to add two C240 M4s to deploy a mini-cloud at other locations (but that's a conversation for...

Dear All, I have a 8 node Proxmox with 8.3.2 and CEPH storage, now planning to add more disk to the CEPH Like to refer the documentation and understand how to do it Requesting the URL for adding the disk to the CEPH cluster thanks Joseph John

Hello everyone, I have been using Ceph for the past few months and have recently acquired the necessary hardware to set up Ceph on its subnet, as advised in the Ceph and Proxmox documentation. I am unsure if I have configured this correctly. Below is my configuration file, where you will also...

Hello, I want to cycle / renew all CEPH keyrings across the cluster as part of my security maintenance procedures. My environment Proxmox VE 8.2.8 CEPH 18.2.4 Components where I want to cycle the keyrings MON & client.admin MGR MDS Current situation I tried to rotate the keys in the...

I want some advice regarding CEPH. I like to use it in the future when I have a 3 node cluster. The idea is to have 2 NVME ssd's per node. 1 1TB ssd for the OS and 1 4TB ssd for the CEPH storage. Is this a good approach? Btw I'm think of WD SN850X or Samsung 990 Pro SSD's

I’m running a 5-node Proxmox cluster on version 7.4.19 with two storage pools: one on spindle drives and the other on SSDs. Both pools host live VMs, but performance is slower than expected, with high IOWait states. I’ve read that enabling KRBD can improve performance, but I haven’t found clear...

We use the PVE8.2+CEPH hyper-converged architecture in the production environment, with a total of 8 physical nodes. These 8 physical nodes use exactly the same hardware configuration. THE SERVER MODEL IS DELL R750 However, in the past six months or so, there has been a physical node crash, and...

Hello, I work for multiple clients and one of them wanted us to create a Proxmox cluster to assure them fault tolerance and a good hypervisor that's cost-efficient. It's the first time we put a Proxmox cluster in Production environment for a client. We've only used single node proxmox. Client...

I think the answer is "no", but I wanted to check whether there was support in the "pveceph pool create" command to specify which erasure code plugin it should use - specifically "clay". Or, would we need to create the pool in ceph manually and add it as specified here...

I have a 2 node cluster running ceph (I know that's not ideal). On one machine, the ceph mon service frequently keeps crashing. Looking at the syslogs for the last crash, it was preceded by: Dec 09 00:00:46 <node> ceph-mon[1207324]: 2024-12-09T00:00:46.474-0800 7ebf05a006c0 -1 received...