X-Git-Url: https://git.proxmox.com/?p=pve-docs.git;a=blobdiff_plain;f=pve-faq.adoc;h=3412eb821c287ca11472a74962b3e0ef34211fba;hp=3c233ea92da32a6dbb394dcfa3af49509c94472e;hb=dd1aa0e01624f5927fb65143c9a070672ccbeb92;hpb=fb8109034f3e36b113ad755e510b97ed8758e9cb diff --git a/pve-faq.adoc b/pve-faq.adoc index 3c233ea..3412eb8 100644 --- a/pve-faq.adoc +++ b/pve-faq.adoc @@ -1,5 +1,11 @@ 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. @@ -9,21 +15,26 @@ ADD NEW FAQS TO THE BOTTOM OF THIS SECTION TO MAINTAIN NUMBERING [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 http://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/or 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 @@ -46,11 +57,99 @@ What is a container, CT, VE, Virtual Private Server, VPS?:: 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. +instances containers. As containers use the host's kernel they 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?:: -What is a KVM guest (KVM VM)?:: +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} 6.x | Debian 10 (Buster)| 2019-07 | tba | tba +| {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_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*, i.e. allows you to run a +complete OS inside a container, where you log in as ssh, add users, +run apache, etc... ++ +LXD is building 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 also aims at *system virtualization*, and thus uses +LXC as the basis of its own container offer. The Proxmox Container +Toolkit is called `pct`, and is tightly coupled with {pve}. That means +that it is aware of the cluster setup, and it can use the same network +and storage resources as fully virtualized 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 running in a contained +environment. Hence you're managing a docker instance from the host with the +docker toolkit. It is not recommended to run docker directly on your +{pve} host. ++ +NOTE: You can however perfectly install and use docker inside a Proxmox Qemu +VM, and thus getting the benefit of software containerization with the very +strong isolation that VMs provide.