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--- lxc:lxc_vs_docker [2021/01/03 14:21] – peter
+++ lxc:lxc_vs_docker [2021/01/03 14:53] (current) – peter
@@ Line 1: / Line 1: @@
 ====== LXC - LXC vs Docker ======
+LXC allows the creation and running of multiple isolated Linux virtual environments on a single control host.
+  * It allows you to not only isolate applications, but even the entire OS.
+  * As there is no preloaded emulation manager software, it runs with no added overhead; i.e. faster and with less RAM.
+  * There is no hardware emulation, which means that aside from a small memory software penalty, LXC will boast bare metal performance characteristics because it only packages the needed applications.
+A Docker container does not include a separate operating system; instead it relies on the operating system’s own functionality as provided by the underlying infrastructure.
+  * Docker packages the application and all its dependencies in a virtual container that can run on any Linux server.
+  * Packages the entire OS and machine setup, including hard drive, virtual processors and network interfaces.
+      * CON:  The resulting bloated mass usually takes a long time to boot and consumes a lot of CPU and RAM.
+      * PRO:  It can be transferred and quickly installed onto another host.
+----
 ^ ^LXC^Docker^
-^Architecture|Supports a fully-virtualized Linux OS including boot-up procedures|Single image and running as an application|
+^Architecture|Supports a fully-virtualized Linux OS including boot-up procedures.|Single image running as an application.|
-^Purposes|Run multiple applications in a single Linux VM|Single container, single application|
+^Purposes|Run multiple applications in a single Linux VM.|Run a single application within a single container.|
-|:::|Requires a fully-functional Linux OS|Rapid deployment and migration across platforms|
+^Requirements|Requires a fully-functional Linux OS.|Running isolated containers simultaneously.|
-|:::|:::|Running isolated containers simultaneously|
+^Advantages|A lightweight alternative to virtual machines.|Rapid and easy deployment.|
-^Advantages|A lightweight alternative to virtual machines|Rapid and easy deployment|
+|:::|More flexible.|Application-centric, portable deployment across machines.|
-|:::|More flexible|Application-centric, portable deployment across machines|
+|:::|Data can be saved in a container.|Component re-use.|
-|:::|Data can be saved in a container|Component re-use|
+|:::| |Versioning: Docker includes git-like capabilities for tracking successive versions of a container, inspecting the diff between versions, committing new versions, rolling back etc.|
-|:::|:::|Tool ecosystem|
+|:::| |Component reuse: Docker allows building or stacking of already created packages.  This allows re-use of a 'template' image, for creating other containers.|
+|:::| |Shared libraries:  There is already a public registry (http://index.docker.io/ ) where there are many thousands of containers that can be used; which have been created by other people.  **WARNING**:  These are not all secure; with many trojans!|