pct.adoc: add CPU and Memory sections

[pve-docs.git] / pve-faq.adoc

diff --git a/pve-faq.adoc b/pve-faq.adoc
index 11b30eb58ac47ceb72d83ec69b0bfda8f30ca02a..abaadcd83fdb41c909a80558b0d87ab49bfcfa1c 100644 (file)
--- a/pve-faq.adoc
+++ b/pve-faq.adoc
@@ -1,6 +1,12 @@
 Frequently Asked Questions
 ==========================
 include::attributes.txt[]
+ifndef::manvolnum[]
+:pve-toplevel:
+endif::manvolnum[]
+ifdef::wiki[]
+:title: FAQ
+endif::wiki[]
 
 NOTE: New FAQs are appended to the bottom of this section.
 
@@ -21,15 +27,15 @@ version 3.
 
 Will {pve} run on a 32bit processor?::
 
-{pve} works only on 64-bit CPU´s (AMD or Intel). There is no plan
+{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 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
@@ -85,3 +91,36 @@ recommended.
 | {pve} 2.x     | Debian 6 (Squeeze)| 2012-04       | 2014-05    | 2014-05
 | {pve} 1.x     | Debian 5 (Lenny)  | 2008-10       | 2012-03    | 2013-01
 |===========================================================
+
+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.