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176 lines
6.9 KiB
Plaintext
176 lines
6.9 KiB
Plaintext
Frequently Asked Questions
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==========================
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ifndef::manvolnum[]
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:pve-toplevel:
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endif::manvolnum[]
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ifdef::wiki[]
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:title: FAQ
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endif::wiki[]
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NOTE: New FAQs are appended to the bottom of this section.
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/////////////////////////////////////////////////////////////////
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ADD NEW FAQS TO THE BOTTOM OF THIS SECTION TO MAINTAIN NUMBERING
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/////////////////////////////////////////////////////////////////
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[qanda]
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What distribution is {pve} based on?::
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{pve} is based on https://www.debian.org[Debian GNU/Linux]
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What license does the {pve} project use?::
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{pve} code is licensed under the GNU Affero General Public License,
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version 3.
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Will {pve} run on a 32bit processor?::
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{pve} works only on 64-bit CPUs (AMD or Intel). There is no plan
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for 32-bit for the platform.
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+
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NOTE: VMs and Containers can be both 32-bit and 64-bit.
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Does my CPU support virtualization?::
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To check if your CPU is virtualization compatible, check for the `vmx`
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or `svm` tag in this command output:
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+
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----
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egrep '(vmx|svm)' /proc/cpuinfo
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----
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Supported Intel CPUs::
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64-bit processors with
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https://en.wikipedia.org/wiki/Virtualization_Technology#Intel_virtualization_.28VT-x.29[Intel
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Virtualization Technology (Intel VT-x)] support.
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(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])
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Supported AMD CPUs::
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64-bit processors with
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https://en.wikipedia.org/wiki/Virtualization_Technology#AMD_virtualization_.28AMD-V.29[AMD
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Virtualization Technology (AMD-V)] support.
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What is a container/virtual environment (VE)/virtual private server (VPS)?::
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In the context of containers, these terms all refer to the concept of
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operating-system-level virtualization. Operating-system-level virtualization is
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a method of virtualization, in which the kernel of an operating system
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allows for multiple isolated instances, that all share the kernel. When
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referring to LXC, we call such instances containers. Because containers use the
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host's kernel rather than emulating a full operating system, they require less
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overhead, but are limited to Linux guests.
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What is a QEMU/KVM guest (or VM)?::
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A QEMU/KVM guest (or VM) is a guest system running virtualized under
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{pve} using QEMU and the Linux KVM kernel module.
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What is QEMU?::
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QEMU is a generic and open source machine emulator and
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virtualizer. QEMU uses the Linux KVM kernel module to achieve near
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native performance by executing the guest code directly on the host
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CPU.
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It is not limited to Linux guests but allows arbitrary operating systems
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to run.
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[[faq-support-table]]
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How long will my {pve} version be supported?::
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{pve} versions are supported at least as long as the corresponding
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Debian Version is
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https://wiki.debian.org/DebianOldStable[oldstable]. {pve} uses a
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rolling release model and using the latest stable version is always
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recommended.
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+
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[width="100%",cols="5*d",options="header"]
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|===============================================================================
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| {pve} Version | Debian Version | First Release | Debian EOL | Proxmox EOL
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| {pve} 8.x | Debian 12 (Bokworm) | 2023-06 | tba | tba
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| {pve} 7.x | Debian 11 (Bullseye)| 2021-07 | 2024-07 | 2024-07
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| {pve} 6.x | Debian 10 (Buster) | 2019-07 | 2022-07 | 2022-07
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| {pve} 5.x | Debian 9 (Stretch) | 2017-07 | 2020-07 | 2020-07
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| {pve} 4.x | Debian 8 (Jessie) | 2015-10 | 2018-06 | 2018-06
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| {pve} 3.x | Debian 7 (Wheezy) | 2013-05 | 2016-04 | 2017-02
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| {pve} 2.x | Debian 6 (Squeeze) | 2012-04 | 2014-05 | 2014-05
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| {pve} 1.x | Debian 5 (Lenny) | 2008-10 | 2012-03 | 2013-01
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|===============================================================================
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[[faq-upgrade]]
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How can I upgrade {pve} to the next point release?::
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Minor version upgrades, for example upgrading from {pve} in version 7.1
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to 7.2 or 7.3, can be done just like any normal update.
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But you should still check the https://pve.proxmox.com/wiki/Roadmap[release notes]
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for any relevant noteable, or breaking change.
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For the update itself use either the Web UI __Node -> Updates__ panel or
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through the CLI with:
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----
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apt update
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apt full-upgrade
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----
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NOTE: Always ensure you correctly setup the
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xref:sysadmin_package_repositories[package repositories] and only
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continue with the actual upgrade if `apt update` did not hit any error.
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[[faq-upgrade-major]]
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How can I upgrade {pve} to the next major release?::
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Major version upgrades, for example going from {pve} 4.4 to 5.0, are also
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supported.
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They must be carefully planned and tested and should *never* be started without
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having a current backup ready.
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+
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Although the specific upgrade steps depend on your respective setup, we provide
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general instructions and advice of how a upgrade should be performed:
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* https://pve.proxmox.com/wiki/Upgrade_from_7_to_8[Upgrade from {pve} 7 to 8]
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* https://pve.proxmox.com/wiki/Upgrade_from_6.x_to_7.0[Upgrade from {pve} 6 to 7]
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* https://pve.proxmox.com/wiki/Upgrade_from_5.x_to_6.0[Upgrade from {pve} 5 to 6]
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* https://pve.proxmox.com/wiki/Upgrade_from_4.x_to_5.0[Upgrade from {pve} 4 to 5]
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* https://pve.proxmox.com/wiki/Upgrade_from_3.x_to_4.0[Upgrade from {pve} 3 to 4]
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LXC vs LXD vs Proxmox Containers vs Docker::
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LXC is a userspace interface for the Linux kernel containment
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features. Through a powerful API and simple tools, it lets Linux users
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easily create and manage system containers. LXC, as well as the former
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OpenVZ, aims at *system virtualization*. Thus, it allows you to run a
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complete OS inside a container, where you log in using ssh, add users,
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run apache, etc...
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+
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LXD is built on top of LXC to provide a new, better user
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experience. Under the hood, LXD uses LXC through `liblxc` and its Go
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binding to create and manage the containers. It's basically an
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alternative to LXC's tools and distribution template system with the
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added features that come from being controllable over the network.
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Proxmox Containers are how we refer to containers that are created and managed
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using the Proxmox Container Toolkit (`pct`). They also target *system
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virtualization* and use LXC as the basis of the container offering. The
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Proxmox Container Toolkit (`pct`) is tightly coupled with {pve}. This means
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that it is aware of cluster setups, and it can use the same network
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and storage resources as QEMU virtual machines (VMs). You can even use the
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{pve} firewall, create and restore backups, or manage containers using
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the HA framework. Everything can be controlled over the network using
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the {pve} API.
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Docker aims at running a *single* application in an isolated, self-contained
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environment. These are generally referred to as ``Application Containers'', rather
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than ``System Containers''. You manage a Docker instance from the host, using the
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Docker Engine command line interface. It is not recommended to run docker
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directly on your {pve} host.
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NOTE: If you want to run application containers, for example, 'Docker' images, it
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is best to run them inside a Proxmox QEMU VM.
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