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1 | Frequently Asked Questions | |
2 | ========================== | |
3 | ifndef::manvolnum[] | |
4 | :pve-toplevel: | |
5 | endif::manvolnum[] | |
6 | ifdef::wiki[] | |
7 | :title: FAQ | |
8 | endif::wiki[] | |
9 | ||
10 | NOTE: New FAQs are appended to the bottom of this section. | |
11 | ||
12 | ///////////////////////////////////////////////////////////////// | |
13 | ADD NEW FAQS TO THE BOTTOM OF THIS SECTION TO MAINTAIN NUMBERING | |
14 | ///////////////////////////////////////////////////////////////// | |
15 | ||
16 | [qanda] | |
17 | ||
18 | What distribution is {pve} based on?:: | |
19 | ||
20 | {pve} is based on http://www.debian.org[Debian GNU/Linux] | |
21 | ||
22 | What license does the {pve} project use?:: | |
23 | ||
24 | {pve} code is licensed under the GNU Affero General Public License, | |
25 | version 3. | |
26 | ||
27 | Will {pve} run on a 32bit processor?:: | |
28 | ||
29 | {pve} works only on 64-bit CPUs (AMD or Intel). There is no plan | |
30 | for 32-bit for the platform. | |
31 | + | |
32 | NOTE: VMs and Containers can be both 32-bit and 64-bit. | |
33 | ||
34 | Does my CPU support virtualization?:: | |
35 | ||
36 | To check if your CPU is virtualization compatible, check for the `vmx` | |
37 | or `svm` tag in this command output: | |
38 | + | |
39 | ---- | |
40 | egrep '(vmx|svm)' /proc/cpuinfo | |
41 | ---- | |
42 | ||
43 | Supported Intel CPUs:: | |
44 | ||
45 | 64-bit processors with | |
46 | http://en.wikipedia.org/wiki/Virtualization_Technology#Intel_virtualization_.28VT-x.29[Intel | |
47 | 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]) | |
48 | ||
49 | Supported AMD CPUs:: | |
50 | ||
51 | 64-bit processors with | |
52 | http://en.wikipedia.org/wiki/Virtualization_Technology#AMD_virtualization_.28AMD-V.29[AMD | |
53 | Virtualization Technology (AMD-V)] support. | |
54 | ||
55 | What is a container/virtual environment (VE)/virtual private server (VPS)?:: | |
56 | ||
57 | In the context of containers, these terms all refer to the concept of | |
58 | operating-system-level virtualization. Operating-system-level virtualization is | |
59 | a method of virtualization, in which the kernel of an operating system | |
60 | allows for multiple isolated instances, that all share the kernel. When | |
61 | referring to LXC, we call such instances containers. Because containers use the | |
62 | host's kernel rather than emulating a full operating system, they require less | |
63 | overhead, but are limited to Linux guests. | |
64 | ||
65 | What is a QEMU/KVM guest (or VM)?:: | |
66 | ||
67 | A QEMU/KVM guest (or VM) is a guest system running virtualized under | |
68 | {pve} using QEMU and the Linux KVM kernel module. | |
69 | ||
70 | What is QEMU?:: | |
71 | ||
72 | QEMU is a generic and open source machine emulator and | |
73 | virtualizer. QEMU uses the Linux KVM kernel module to achieve near | |
74 | native performance by executing the guest code directly on the host | |
75 | CPU. | |
76 | It is not limited to Linux guests but allows arbitrary operating systems | |
77 | to run. | |
78 | ||
79 | [[faq-support-table]] | |
80 | How long will my {pve} version be supported?:: | |
81 | ||
82 | {pve} versions are supported at least as long as the corresponding | |
83 | Debian Version is | |
84 | https://wiki.debian.org/DebianOldStable[oldstable]. {pve} uses a | |
85 | rolling release model and using the latest stable version is always | |
86 | recommended. | |
87 | + | |
88 | [width="100%",cols="5*d",options="header"] | |
89 | |=========================================================== | |
90 | | {pve} Version | Debian Version | First Release | Debian EOL | Proxmox EOL | |
91 | | {pve} 6.x | Debian 10 (Buster)| 2019-07 | tba | tba | |
92 | | {pve} 5.x | Debian 9 (Stretch)| 2017-07 | 2020-07 | 2020-07 | |
93 | | {pve} 4.x | Debian 8 (Jessie) | 2015-10 | 2018-06 | 2018-06 | |
94 | | {pve} 3.x | Debian 7 (Wheezy) | 2013-05 | 2016-04 | 2017-02 | |
95 | | {pve} 2.x | Debian 6 (Squeeze)| 2012-04 | 2014-05 | 2014-05 | |
96 | | {pve} 1.x | Debian 5 (Lenny) | 2008-10 | 2012-03 | 2013-01 | |
97 | |=========================================================== | |
98 | ||
99 | [[faq-upgrade]] | |
100 | How can I upgrade {pve} to the next release?:: | |
101 | ||
102 | Minor version upgrades, for example upgrading from {pve} in version 5.1 | |
103 | to 5.2, can be done just like any normal update, either through the Web | |
104 | GUI __Node -> Updates__ panel or through the CLI with: | |
105 | + | |
106 | ---- | |
107 | apt update | |
108 | apt full-upgrade | |
109 | ---- | |
110 | + | |
111 | NOTE: Always ensure you correctly setup the | |
112 | xref:sysadmin_package_repositories[package repositories] and only | |
113 | continue with the actual upgrade if `apt update` did not hit any error. | |
114 | + | |
115 | Major version upgrades, for example going from {pve} 4.4 to 5.0, are | |
116 | also supported. They must be carefully planned and tested and should | |
117 | *never* be started without having a current backup ready. | |
118 | Although the specific upgrade steps depend on your respective setup, we | |
119 | provide general instructions and advice of how a upgrade should be | |
120 | performed: | |
121 | + | |
122 | * https://pve.proxmox.com/wiki/Upgrade_from_5.x_to_6.0[Upgrade from {pve} 5.x to 6.0] | |
123 | ||
124 | * https://pve.proxmox.com/wiki/Upgrade_from_4.x_to_5.0[Upgrade from {pve} 4.x to 5.0] | |
125 | ||
126 | * https://pve.proxmox.com/wiki/Upgrade_from_3.x_to_4.0[Upgrade from {pve} 3.x to 4.0] | |
127 | ||
128 | LXC vs LXD vs Proxmox Containers vs Docker:: | |
129 | ||
130 | LXC is a userspace interface for the Linux kernel containment | |
131 | features. Through a powerful API and simple tools, it lets Linux users | |
132 | easily create and manage system containers. LXC, as well as the former | |
133 | OpenVZ, aims at *system virtualization*. Thus, it allows you to run a | |
134 | complete OS inside a container, where you log in using ssh, add users, | |
135 | run apache, etc... | |
136 | + | |
137 | LXD is built on top of LXC to provide a new, better user | |
138 | experience. Under the hood, LXD uses LXC through `liblxc` and its Go | |
139 | binding to create and manage the containers. It's basically an | |
140 | alternative to LXC's tools and distribution template system with the | |
141 | added features that come from being controllable over the network. | |
142 | + | |
143 | Proxmox Containers are how we refer to containers that are created and managed | |
144 | using the Proxmox Container Toolkit (`pct`). They also target *system | |
145 | virtualization* and use LXC as the basis of the container offering. The | |
146 | Proxmox Container Toolkit (`pct`) is tightly coupled with {pve}. This means | |
147 | that it is aware of cluster setups, and it can use the same network | |
148 | and storage resources as QEMU virtual machines (VMs). You can even use the | |
149 | {pve} firewall, create and restore backups, or manage containers using | |
150 | the HA framework. Everything can be controlled over the network using | |
151 | the {pve} API. | |
152 | + | |
153 | Docker aims at running a *single* application in an isolated, self-contained | |
154 | environment. These are generally referred to as ``Application Containers'', rather | |
155 | than ``System Containers''. You manage a Docker instance from the host, using the | |
156 | Docker Engine command line interface. It is not recommended to run docker | |
157 | directly on your {pve} host. | |
158 | + | |
159 | NOTE: If you want to run application containers, for example, 'Docker' images, it | |
160 | is best to run them inside a Proxmox Qemu VM. |