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Proxmox Virtual Environment 9.0 with Debian 13 released

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Re: Proxmox Virtual Environment 9.0 with Debian 13 released

#71

Seems like it still has no official support for any kind of disk encryption, so you are on your own if you fiddle that in somehow and things may break. Such a beautiful, peaceful world where disk encryption is not needed!

Proxmox supports ZFS and ZFS has disk encryption.

don't enable it though, if you rely on the guest replication feature of PVE. See https://bugzilla.proxmox.com/show_bug.cgi?id=2350 for why

Re: Proxmox Virtual Environment 9.0 with Debian 13 released

#72
post #54

Earlier quoted context omitted.

As far as I understand it, Ceph allows you to create distributed storage by using the hardware across your hosts. Can it be used to format a single shared block device that is accessed by multiple hosts like VMFS does? My understanding is this isn't possible.

Ceph RBD can technically support multi-writer access through exclusive locking, but it won't be the same as multi-writer. You can set up a radosgw outside of the proxmox and use objects. But ceph is fundamentally a distributed object store, shared LUNs with block level multi-writer is fundamentally a tightly coupled solution. If you have a legacy need that has OCFS or a quorum drive, the underlying tools proxmox is a…

> But ceph is fundamentally a distributed object store, shared LUNs with block level multi-writer is fundamentally a tightly coupled solution.

There is Ceph and then there is CephFS, "a POSIX-compliant file system built on top of Ceph’s distributed object store, RADOS":

* https://docs.ceph.com/en/latest/cephfs/

* https://pve.proxmox.com/wiki/Storage:_CephFS

Re: Proxmox Virtual Environment 9.0 with Debian 13 released

#73
post #70
post #51

I would see Proxmox come up in so many homelab type conversations so I tried 8.* on a mini pc. The impression I got was that the project probably provides the most value in a clustered environment or even on a single node if someone prefers using a web UI. What didn't seem very clear was an out-of-box way for declaring VM and container configurations [1] that could then be version controlled. Common approaches seemed…

cloud-init support is sorely missed.

Proxmox has had cloud-init support for a while and we have been using it for several years in production.

Re: Proxmox Virtual Environment 9.0 with Debian 13 released

#74
post #50

Earlier quoted context omitted.

The "update" step is a bit of a "draw the rest of the owl" in the case of major version updates like this 8.x -> 9.x release. It also depends how many features you're using in that cluster as to how complicated the owl is to draw. That said, I just made it out alright in my home lab without too much hullabaloo.

Did you do the backup and full reinstall or just with apt? I should do the same update this weekend. .

Just with editing the apt sources and running apt commands. There is a nice pre-conversion checker which will alert you to anything special you have to (or may want to) do prior to beginning that process.

Re: Proxmox Virtual Environment 9.0 with Debian 13 released

#75
post #70

Earlier quoted context omitted.

cloud-init support is sorely missed.

Proxmox has had cloud-init support for a while and we have been using it for several years in production.

Doesn't work for LXC as far as I can tell

Re: Proxmox Virtual Environment 9.0 with Debian 13 released

#76

"It’s also possible to install Proxmox VE 9.0 on top of Debian." Has that always been the case? I have a faint memory of trying once and not being able to with Proxmox 7.x

I just installed 9.0 atop Trixie. Works fine, just follow https://pve.proxmox.com/wiki/Install_Proxmox_VE_on_Debian_12... and replace the distro name.

Re: Proxmox Virtual Environment 9.0 with Debian 13 released

#77

I like Promox a lot, but I wish it had an equivalent to VMware's VMFS. The last time I tried, there wasn't a way to use shared storage (i.e., iscsi block devices) across multiple nodes and have a failover of VMs that use that storage. And by failover I mean moving a VM to another host and booting it there, not even keeping the VM running.

Unfortunately clustered storage is just a hard problem, and there is a lack of good implementations. OCFS2 and GFS2 exist, but IIRC there are challenges for using them for VM storage, especially for snapshots. Proxmox 9 added a new feature to use multiple QCOW2 files as a volume chain, which may improve this, but for now that's only used for LVM. (Making Proxmox 9 much more viable on a shared iSCSI/FC LUN).

If your requirements are flexible Proxmox does have one nice alternative though - local ZFS + scheduled replication. This feature performs ZFS snapshots + ZFS send every few minutes, giving you snapshots on your other nodes. This snapshot can be used for manual HA, auto HA, and even for fast live migration. Not great for databases, but a decent alternative for homelab and small business.

Re: Proxmox Virtual Environment 9.0 with Debian 13 released

#78

I have only recently moved to proxmox as the Hyper-V licensing became too opressive for hobby/one-person projects use. Can someone tell me wether proxmox upgrades are usually smooth sailing, or should I prepare for this being an endeavour?

Usually smooth. But if you're running a production workload definitely do your prep work. Working and tested backups, upgrade one node at a time and test, read release notes, wait for a week after major releases, etc. If you don't have a second node I highly recommend it, Proxmox can do ZFS replication for fast live migrations without shared storage.

Re: Proxmox Virtual Environment 9.0 with Debian 13 released

#79
post #42
post #35

Earlier quoted context omitted.

Can’t it use pam? so many options for providers there.

It was mostly about syncing groups with proxmox. Worked by patching the LDAP provider to support our schema. Comment was more about the extensibility problem when doing this. Actually when you say this, I wonder how PAM could work, only ever used it for providing shell access: we typically do not have any local users on the machine. Never used PAM in a way not providing any local execution privileges (which is the wh…

pam groups are not synced into proxmox for permission management :(

Apparently with OIDC (with group claims), Proxmox can map group membership from OIDC tokens and autocreate or map groups dynamically at user login

Re: Proxmox Virtual Environment 9.0 with Debian 13 released

#80

Seems like it still has no official support for any kind of disk encryption, so you are on your own if you fiddle that in somehow and things may break. Such a beautiful, peaceful world where disk encryption is not needed!

Proxmox supports ZFS and ZFS has disk encryption.

Even OpenZFS people advise against using their encryption at this point.
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