Frequently Asked Questions
---------------------------
+==========================
+ifndef::manvolnum[]
+:pve-toplevel:
+endif::manvolnum[]
+ifdef::wiki[]
+:title: FAQ
+endif::wiki[]
NOTE: New FAQs are appended to the bottom of this section.
[qanda]
-What distribution is Proxmox VE based on?::
+What distribution is {pve} based on?::
-Proxmox VE is based on http://www.debian.org[Debian GNU/Linux]
+{pve} is based on https://www.debian.org[Debian GNU/Linux]
-Will Proxmox VE run on a 32bit processor?::
+What license does the {pve} project use?::
-Proxmox VE works only on 64-bit CPU´s (AMD or Intel). There is no plan
+{pve} code is licensed under the GNU Affero General Public License,
+version 3.
+
+Will {pve} run on a 32bit processor?::
+
+{pve} works only on 64-bit CPUs (AMD or Intel). There is no plan
for 32-bit for the platform.
+
-NOTE: VMs and Containers can be bothe 32-bit and/or 64-bit.
+NOTE: VMs and Containers can be both 32-bit and 64-bit.
Does my CPU support virtualization?::
-To check if your CPU is virtualization compatible, check for the "vmx"
-or "svm" tag in this command output:
+To check if your CPU is virtualization compatible, check for the `vmx`
+or `svm` tag in this command output:
+
----
egrep '(vmx|svm)' /proc/cpuinfo
Supported Intel CPUs::
64-bit processors with
-http://en.wikipedia.org/wiki/Virtualization_Technology#Intel_virtualization_.28VT-x.29[Intel
-Virtualization Technology (Intel VT-x)] support. (http://ark.intel.com/search/advanced/?s=t&VTX=true&InstructionSet=64-bit[List of processors with Intel VT and 64-bit])
+https://en.wikipedia.org/wiki/Virtualization_Technology#Intel_virtualization_.28VT-x.29[Intel
+Virtualization Technology (Intel VT-x)] support.
+(https://ark.intel.com/content/www/us/en/ark/search/featurefilter.html?productType=873&2_VTX=True&2_InstructionSet=64-bit[List of processors with Intel VT and 64-bit])
Supported AMD CPUs::
64-bit processors with
-http://en.wikipedia.org/wiki/Virtualization_Technology#AMD_virtualization_.28AMD-V.29[AMD
+https://en.wikipedia.org/wiki/Virtualization_Technology#AMD_virtualization_.28AMD-V.29[AMD
Virtualization Technology (AMD-V)] support.
-What is a container, CT, VE, Virtual Private Server, VPS?::
+What is a container/virtual environment (VE)/virtual private server (VPS)?::
+
+In the context of containers, these terms all refer to the concept of
+operating-system-level virtualization. Operating-system-level virtualization is
+a method of virtualization, in which the kernel of an operating system
+allows for multiple isolated instances, that all share the kernel. When
+referring to LXC, we call such instances containers. Because containers use the
+host's kernel rather than emulating a full operating system, they require less
+overhead, but are limited to Linux guests.
+
+What is a QEMU/KVM guest (or VM)?::
+
+A QEMU/KVM guest (or VM) is a guest system running virtualized under
+{pve} using QEMU and the Linux KVM kernel module.
+
+What is QEMU?::
+
+QEMU is a generic and open source machine emulator and
+virtualizer. QEMU uses the Linux KVM kernel module to achieve near
+native performance by executing the guest code directly on the host
+CPU.
+It is not limited to Linux guests but allows arbitrary operating systems
+to run.
+
+[[faq-support-table]]
+How long will my {pve} version be supported?::
+
+{pve} versions are supported at least as long as the corresponding
+Debian Version is
+https://wiki.debian.org/DebianOldStable[oldstable]. {pve} uses a
+rolling release model and using the latest stable version is always
+recommended.
++
+[width="100%",cols="5*d",options="header"]
+|===============================================================================
+| {pve} Version | Debian Version | First Release | Debian EOL | Proxmox EOL
+| {pve} 7.x | Debian 11 (Bullseye)| 2021-07 | tba | tba
+| {pve} 6.x | Debian 10 (Buster) | 2019-07 | 2022-07 | 2022-07
+| {pve} 5.x | Debian 9 (Stretch) | 2017-07 | 2020-07 | 2020-07
+| {pve} 4.x | Debian 8 (Jessie) | 2015-10 | 2018-06 | 2018-06
+| {pve} 3.x | Debian 7 (Wheezy) | 2013-05 | 2016-04 | 2017-02
+| {pve} 2.x | Debian 6 (Squeeze) | 2012-04 | 2014-05 | 2014-05
+| {pve} 1.x | Debian 5 (Lenny) | 2008-10 | 2012-03 | 2013-01
+|===============================================================================
+
+[[faq-upgrade]]
+How can I upgrade {pve} to the next release?::
+
+Minor version upgrades, for example upgrading from {pve} in version 5.1
+to 5.2, can be done just like any normal update, either through the Web
+GUI __Node -> Updates__ panel or through the CLI with:
++
+----
+apt update
+apt full-upgrade
+----
++
+NOTE: Always ensure you correctly setup the
+xref:sysadmin_package_repositories[package repositories] and only
+continue with the actual upgrade if `apt update` did not hit any error.
++
+Major version upgrades, for example going from {pve} 4.4 to 5.0, are
+also supported. They must be carefully planned and tested and should
+*never* be started without having a current backup ready.
+Although the specific upgrade steps depend on your respective setup, we
+provide general instructions and advice of how a upgrade should be
+performed:
++
+* https://pve.proxmox.com/wiki/Upgrade_from_6.x_to_7.0[Upgrade from {pve} 6.x to 7.0]
-Operating-system-level virtualization is a server-virtualization
-method where the kernel of an operating system allows for multiple
-isolated user-space instances, instead of just one. We call such
-instances containers.
+* https://pve.proxmox.com/wiki/Upgrade_from_5.x_to_6.0[Upgrade from {pve} 5.x to 6.0]
-What is a KVM guest (KVM VM)?::
+* https://pve.proxmox.com/wiki/Upgrade_from_4.x_to_5.0[Upgrade from {pve} 4.x to 5.0]
-A KVM guest or KVM VM is a guest system running virtualized under
-Proxmox VE with KVM.
+* https://pve.proxmox.com/wiki/Upgrade_from_3.x_to_4.0[Upgrade from {pve} 3.x to 4.0]
+LXC vs LXD vs Proxmox Containers vs Docker::
+LXC is a userspace interface for the Linux kernel containment
+features. Through a powerful API and simple tools, it lets Linux users
+easily create and manage system containers. LXC, as well as the former
+OpenVZ, aims at *system virtualization*. Thus, it allows you to run a
+complete OS inside a container, where you log in using ssh, add users,
+run apache, etc...
++
+LXD is built on top of LXC to provide a new, better user
+experience. Under the hood, LXD uses LXC through `liblxc` and its Go
+binding to create and manage the containers. It's basically an
+alternative to LXC's tools and distribution template system with the
+added features that come from being controllable over the network.
++
+Proxmox Containers are how we refer to containers that are created and managed
+using the Proxmox Container Toolkit (`pct`). They also target *system
+virtualization* and use LXC as the basis of the container offering. The
+Proxmox Container Toolkit (`pct`) is tightly coupled with {pve}. This means
+that it is aware of cluster setups, and it can use the same network
+and storage resources as QEMU virtual machines (VMs). You can even use the
+{pve} firewall, create and restore backups, or manage containers using
+the HA framework. Everything can be controlled over the network using
+the {pve} API.
++
+Docker aims at running a *single* application in an isolated, self-contained
+environment. These are generally referred to as ``Application Containers'', rather
+than ``System Containers''. You manage a Docker instance from the host, using the
+Docker Engine command line interface. It is not recommended to run docker
+directly on your {pve} host.
++
+NOTE: If you want to run application containers, for example, 'Docker' images, it
+is best to run them inside a Proxmox QEMU VM.
projects / pve-docs.git / blobdiff