Getting Started With Docker | Docker Tutorial | Docker Training | Edureka

www.edureka.co/docker-trainingEDUREKA’S DOCKER CERTIFICATION TRAINING

Agenda
1. Challenges With Shipping & Transportation
2. How Does Docker Fit The Bill?
3. What Is Docker?
4. Benefits Of Docker Over Virtual Machines
5. Docker Terminology
6. Architecture Of Docker
7. Hands-On: Running Hello-World Docker Container

Challenges With Shipping & Transportation

Challenges With Shipping & Transportation
Means of transport
Goodstobetransported
Challenges:-
• How to transport the goods?
• Are the workers trained enough to handle the goods?
The goods will be shipped via various transports such as train, and ship.
During shipment, loading and unloading activities of goods requires skilled workers.

Solution To Shipping
Means of transport
Goodstobetransported
What’s inside the
container doesn’t matter

Solution To Shipping & Transportation
Once loaded, the container can be
shipped over long distances efficiently
A container is loaded with goods &
sealed until it reaches the destination
MultiplicityofGoods
Multiplicityofmethods
fortransporting
CanItransportquicklyandsmoothly
(e.g.fromboattotraintotruck)
DoIworryabouthowgoodsinteract
(e.g.coffeebeansnexttospices)

Challenges with System/Software Configurations
Machine / System
Software/Services
• Which system should be used to run the software/ service?
• Are the employees skilled enough to handle the service/ software?

Docker To The Rescue

Docker – A shipping Container for node
Static website Web frontendUser DB Queue Analytics DB
Development
VM
QA server Public Cloud
Contributor’s
laptop
MultiplicityofStacks
Multiplicityofhardware
environments
Production
Cluster
Customer Data
Center
Doservicesandapps
interactappropriately?
CanImigrate
smoothlyandquickly
Operator:
Configure Once, Run Anything
Developer:
Build Once, Run Anywhere

What Is Docker?

What Is Docker?
Host OS
Docker Engine
App 1
BINS / LIBS
Container 1 Container 2
App 2
BINS / LIBS
Docker is a Containerization platform which packages your application and all its dependencies together in the form of
Containers so as to ensure that your application works seamlessly in any environment be it Development or Test or Production.

Who Can Use Docker?
Developer: Docker helps the developer to focus only on building great software by automating repetitive tasks of setting up
and configuring development environment.
Enterprise: Docker is at the heart of the modern app platform, bridging
developer and IT, Linux and Windows. It works in the cloud just as well
as on premise; supports both traditional and microservices
architectures.
Sysadmin: Docker helps the sysadmin to streamline the software
delivery, such as develop and deploy bug fixes and new features
without any roadblock.

Why Docker?
Boost productivity
Eliminate friction in the development cycle
With BI you can keep track of information and set your goals
accordingly. BI goes a long way in helping achieving your aim
1
Adaptability
Easily adapts to your working environment
2
Simplicity
Long & tedious jobs are much simpler now3

Docker Containers Are Popular

Docker In A Nutshell
Docker
File
Project Code
Docker
Image
Docker
Container
Virtual Machine
Docker
Hub
Production
Server
Staging
Server
Container
Container
• Docker file builds a Docker image and that image contains all the project's code
• You can run that image to create as many docker containers as you want
• The created Images can be uploaded on Docker hub from where the image can be
pulled and built in a container

Benefits Of Docker Over VMs

VM vs. Docker

VM vs. Docker
S t a r t u p
S i z e
I n t e g r a t i o n
Total Memory
16 GB
4 GB 2 GB
Memory wasted: 7 GB
3 GB
2 GB 4 GB

6 GB
4 GB
6 GB
7 GB of memory is blocked and
cannot be allotted to a new VM
1 GB
In case of Virtual Machines
VM 1
VM 2
VM 3
 Memory Used: 9 GB

VM vs. Docker
S t a r t u p
S i z e
Total Memory
16 GB
4 GB 2 GB
Memory wasted: 7 GB
VM 1
3 GB
2 GB 4 GB
VM 2
VM 3

6 GB
4 GB
6 GB
7 GB of memory is blocked and
cannot be allotted to a new VM
In case of Virtual Machines
1 GB Total Memory
16 GB
Only 9 GB memory utilized;
7 GB can be allotted to a new Container
In case of Docker
Memory
Allotted: 4
GB
Memory
Allotted: 3
GB
Memory
Allotted: 10
GB
3 GB
2 GB
4 GB App 1
App 2
App 3

VM vs. Docker
S t a r t u p
S i z e
Host OS Kernel
Guest
OS
BINS
&
LIBS
Ruby
v1
Build 1
Guest
OS
BINS
&
LIBS
Ruby
v2
Build 2
Virtual
Machines
New Builds  Multiple OS  Separate
Libraries  Heavy  More Time
In case of Virtual Machines In case of Docker
Host OS Kernel
BINS
&
LIBS
Ruby
v1
Build 1
BINS
&
LIBS
Ruby
v2
Build 2
Container
New Builds  Same OS  Separate
Libraries  Lightweight  Less Time

VM vs. Docker
S t a r t u p
S i z e
Integration In Virtual Machines Is Possible, But:
▪ Costly Due To Infrastructure Requirements
▪ Not Easily Scalable
Jenkins

VM vs. Docker
S t a r t u p
S i z e
Integration in Docker is Faster, Cheap & Easily Scalable
Jenkins

Working Of Docker

Docker Engine
Docker Daemon
Container 1
Container 2
Container n
Docker Client
Linux
Rest API
Docker_Host

Docker Engine
Docker Daemon
Container 1
Container 2
Container n
Docker Client
Linux
Rest API
Docker_Host
Docker Client
Rest API
Docker_Host
Docker Toolbox
Docker Daemon
Container 1
Container 2
Container n
Windows / OS X
Docker Toolbox includes:
▪ Docker Client
▪ Compose(Mac only)
▪ Kitematic
▪ Machine and
▪ VirtualBox

Docker Terminologies

Docker Images & Containers
▪ Read Only Template Used To Create Containers
▪ Built By Docker Users
▪ Stored In Docker Hub Or Your Local Registry
Docker Images

Docker Images & Containers
▪ Read Only Template Used To Create Containers
▪ Built By Docker Users
▪ Stored In Docker Hub Or Your Local Registry
Docker Images Docker Containers
▪ Isolated Application Platform
▪ Contains Everything Needed To Run The Application
▪ Built From One Or More Images
run

Docker Registry
▪ Docker Registry is a storage component for Docker Images
▪ We can store the Images in either Public / Private repositories
▪ Docker Hub is Docker’s very own cloud repository
▪ Control where your images are being stored
▪ Integrate image storage with your in-house development workflow
Why Use Docker Registries?

Docker Swarm provides native clustering capabilities to turn a group of Docker engines into a
single, virtual Docker Engine. With these pooled resources, you can scale out your application
as if it were running on a single, huge computer.
Docker Swarm

Docker Compose
Docker Compose makes it easier to configure and run applications made up of
multiple containers. For example, imagine being able to define three containers - one
running a web app, another running postgres, and a third running redis - all in one
YAML file and then running those three connected containers with a single command.
web app
postgres
redis
Docker
Compose
File
You can run these three
containers with a single commandContainers

Docker Architecture

Docker Architecture
docker run
docker pull
docker build
Client Docker_Host
Docker Daemon
Containers Images
Registry

Docker Architecture
docker run
docker pull
docker build
Client Docker_Host
Docker Daemon
Containers Images
Registry
build

Docker Architecture
docker run
docker pull
docker build
Client Docker_Host
Docker Daemon
Containers Images
Registry
build
pull

Docker Architecture
docker run
docker pull
docker build
Client Docker_Host
Docker Daemon
Containers Images
Registry
build
pull
run

Demo:-
Running A Hello-World Container

Running A Hello-World Container
• Version Check
• Searching hello-world
• Pull hello-world
• Execute hello-world

Docker With Edureka
M A S T E R D O C K E R W I T H E D U R E K A
Go to www.edureka.co/docker-training

Getting Started With Docker | Docker Tutorial | Docker Training | Edureka

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