A new major version of Proxmox Virtual Environment has been released, namely version 7.0. This open source distribution, which is a very good virtualization platform built on the basis of Debian, KVM, LXC, Ceph, has long been on the market as a counterweight to others, incl. and commercial (even if they are free in some of their versions) hypervisors, and for a year now it has been working on many hosts in the world.
The Proxmox virtualization platform is equipped with all the necessary management tools and an easy-to-use web user interface. This allows simple and easy management of the host both through the command line and through a standard web browser. As an open source project, Proxmox VE has a huge user base with over 450,000 hosts worldwide.
So what's new with us?
The release is based on Debian 11 "Bullseye", but using the newer Linux 5.11 kernel. LXC 4.0, QEMU 6.0, OpenZFS 2.0.4 are used.
The new version of Ceph by default is Ceph Pacific 16.2; Ceph Octopus 15.2 is still supported and can be used.
Btrfs file system with subvolume snapshot capability, built-in RAID, and self-healing data and metadata checksums.
New "Repositories" panel for easy GUI management of package repositories.
Single sign-on (SSO) support with OpenID Connect.
QEMU 6.0 with 'io_uring', with the ability to remove VM disks that are no longer referenced.
LXC 4.0 has full support for cgroups v2.
Redesigned Proxmox installer.
Standalone ACME plugin with improved support for dual-stack environments (IPv4 and IPv6).
Using ifupdown2 as the default for new installations.
Setting chrony as the default NTP daemon.
and, as they say, "many other improvements, bug fixes, etc."
More details
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: chrony NTP , systemd-timesync . , , systemd-timesyncd, chrony, ntp openntpd.
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Upgrading the distribution from older versions of Proxmox VE or from the beta version of Proxmox VE 7.0 is possible using apt. It is also possible to install Proxmox VE 7.0 on top of Debian 11 "Bullseye".
Upgrading a Ceph Cluster : First you need to upgrade Proxmox VE from 6.4 to 7.0. After that, you need to upgrade Ceph from Octopus to Pacific. A detailed upgrade guide can be found on the related documentation page .