What is docker?
A Docker container can be described as a wrap
around a piece of software that contains everything needed in order to run the
software. This is done in order to make sure that the app will run the same no
matter what environment it runs in.
VirtualMachines Vs Docker Containers
VirtualBox
and VMWare are virtualization apps that create virtual machines that are
isolated at the hardware level.
Docker
is a containerization app that isolates apps at software level.
irtual Machines
|
Docker Containers
|
Hardware level process isolation
|
OS level process isolation
|
VMs offer complete isolation of
applications from host OS
|
Docker containers can share some
resources with host OS
|
Each VM has separate OS
|
Each docker container can share
OS resources
|
Boots in minutes
|
Boots in seconds
|
More resource usage
|
Less resource usage
|
Pre-configured VMs are hard to
find and manage
|
Pre-built docker containers for
home server apps already available
|
Customizing pre-configured VMs
requires work
|
Building a custom setup with
containers is easy
|
VMs are typically bigger in size
as they contain whole OS underneath
|
Docker containers are small in
size with only docker engine over the host OS
|
VMs can be easily moved to a new
host OS
|
Containers are destroyed and
recreated rather than moving (data volume is backed up)
|
Creating VMs take relatively long
time
|
Dockers can be created in seconds
|
Virtualized Apps are harder to
find and it takes more time to install and run them
|
Containerized apps such as
SickBeard, Sonarr, CouchPotato etc. can be found and installed easily within
minutes
|
No comments:
Post a Comment