Managing micro services on docker environment. Clustering of apps on docker platform.

1. Evaluating the scope of
Microservices in Academic
Environment
Guided By :
Dr. Hardik Joshi
Milind Bhagwati
Mayursinh Vaghela

2.  To build a classic web application using any
language
 Presentation Layer
 Business Layer
 Database Layer
Monolithic Application

3.  To Run the Application
 Create Package.
 Deploy it on Web Server.(Ex: Apache)
 Application becomes monolithic.
Continued…

4.  As the application grows, the code base
grows with it.
 Difficult to change the application language.
 If any single application function or
component fails, then the entire application
goes down.
Drawbacks of Monolithic Application

5.  To scale a monolithic application we have to
deploy the same packages in more servers.
 Every module is tied together. So, developers
can’t work independently to develop
modules.
Continued…

6.  The objective of this dissertation is to
evaluate the use of container
technologies/microservices in academic
environment.
 For instance
 Android Studio
 Multiple versions of Web Server
 Multiple versions of Java
Objective of Dissertation

7.  Microservices are small, independent processes
that communicate with each other to form
complex applications which communicate with
each other through simple APIs.
 These services are small building blocks,
highly decoupled and focused on doing a small
task, facilitating a modular approach to system-
building.
Microservices
1
Newman, Sam. Building Microservices. " O'Reilly Media, Inc.", 2015.
[1]

8.  For each functionality creation of one service
is easy.
 Larger applications can remain unaffected by
the failure of a single service.
 Technology Independence : new technology
stack on an individual service.
Why do we require Microservices?
2
Thönes, Johannes. "Microservices." IEEE Software 32.1 (2015): 116-116.3
Lewis, James, and Martin Fowler. "Microservices." (2014).

9.  Developers can work independently to
develop/deploy their own modules.
 Continuous Deployment is possible.
Continued…

10.  Amazon
 Netflix
 Google
 eBay
Big players considering Microservices

11.  Different Container technology is used to
implement microservices.
 Operating-System-level virtualization allows
us to run multiple isolated user-space
instances in parallel. These user-space
instances have the application code, the
required libraries, and the required runtime to
run the application without any external
dependencies. These user-space instances are
referred to as containers.
How to move on Microservices?

12.  Each Container represents the different
services in microservices architecture.
 Containers are lightweight and designed to
run anywhere.
 Multiple containers can be deployed in a
single or multiple VM.
 It is easy to deploy new versions of services
inside containers.
Continued…
4
Kratzke, Nane. "About microservices, containers and their underestimated impact on network performance. "Proceedings of CLOUD COMPUTING 2015 (2015).

13. Continued...
Hypervisor Based Container Virtualization
5
https://courses.edx.org/

14.  Different platform and tools are available to create
and manage containers.
1. Docker Platform 4. Mesos
2. Kubernetes 5. Amazone ECS
3. Shipyard 6. OpenStack Magnum
Continued…
6
Mouat, Adrian. Using Docker: Developing and Deploying Software with Containers. " O'Reilly Media, Inc.", 2015.

15.  Once we remove the packages which are not
required to boot the base OS and run
container-related services, we are left with
specialized OSes, which are referred to as
Micro OSes for containers.
1. Atomic Host 3. Vmware Photon
2. CoreOs 4. RancherOs
Continued…
7
https://courses.edx.org/

16.  Docker enables developers and IT admins to
build, ship and run any application, anywhere.
 Docker provide below services:
 Cloud adoption (CaaS)
 Portability (Build once run anywhere)
 Agility
 Control
Why Docker for Microservices?
8
https://docs.docker.com9
Stubbs, Joe, Walter Moreira, and Rion Dooley. "Distributed systems of microservices using Docker and Serfnode. " Science Gateways (IWSG), 2015 7th
International Workshop on. IEEE, 2015.

17.  Docker Ecosystem
Continued…

18.  Docker is a shipping container system for code.
Continued…

19.  Isolation using linux Kernel features
- Namespaces - cgroups
1. Pid 1. Memory
2. Mnt 2. cpu
3. Net 3. devices
4. Uts
5. Ipc
6. user
Continued…

20.  Docker Platform Consists of multiple
products/tools for container orchestration
and making container deployments scalable.
1. Docker Engine 4.Docker Swarm
2. Docker Hub 5. Docker Compose
3. Docker Machine 6. Kitematic
Continued…

21.  Docker Engine is the program that enables
containers to build, shipped, and run.
 Docker Engine uses linux kernel namespaces
and control groups.
 Namespaces gives isolated workspace.
 It is also known as Docker Daemon.
Docker Engine

22. Continued...

23.  The Docker Hub is the official source of pre-
written Dockerfiles, providing public and
private repositories for images.
 Images are read only template used to create
containers.it can be built by any docker hub
user.
 Images are stored in the docker hub or in local
Registry.Container runs from this images.
Docker Hub

24.  Install / Configures Docker Engine.
 Basic Management of Host.
 Docker Machine helps us configure and
manage one or more Docker engines running
locally or on cloud environments. With Docker
Machine we can start, inspect, stop, and
restart a managed host, upgrade the Docker
client and daemon, and configure a Docker
client to talk to our host.
Docker Machine

25.  Docker Swarm is a native container
orchestration tool. It logically groups multiple
Docker engines to create a virtual engine, on
which we can deploy and scale applications.
 Components of Swarm :-
 Swarm Manager
 Swarm Agents
 Swarm discovery service
Docker Swarm

26. Continued...

27.  Docker Compose is a tool for creating and
managing multi container applications.
 Containers are all defined in a single file called
docker-compose.yml.
 Each container runs a particular component of
your application.
 Compose will spin up all your containers in a
single command.
Docker Compose

28.  Kitematic is a great GUI tool for Mac OS X and
Windows.
 Search for the image you need, create and run
container.
 Kitematic offers basic configuration options,
but for more advanced settings we need to
use command line.
Kitematic

29. 1. Newman, Sam. Building Microservices. " O'Reilly Media,
Inc.", 2015.
2. Thönes, Johannes. "Microservices." IEEE Software 32.1
(2015): 116-116.
3. Lewis, James, and Martin Fowler. "Microservices." (2014).
4. Kratzke, Nane. "About microservices, containers and their
underestimated impact on network performance.
"Proceedings of CLOUD COMPUTING 2015 (2015).
5. https://courses.edx.org/
References

30. 6. Mouat, Adrian. Using Docker: Developing and Deploying
Software with Containers. " O'Reilly Media, Inc.", 2015
7. https://courses.edx.org
8. https://docs.docker.com
9. Stubbs, Joe, Walter Moreira, and Rion Dooley. "Distributed
systems of microservices using Docker and Serfnode. "
Science Gateways (IWSG), 2015 7th International
Workshop on. IEEE, 2015.
Continued…

31.  Implementation of multiple web servers on single
system.
Scope for Future Work

32.  Installing Docker :-
Installing Docker in Linux

33.  Installing Docker Engine:-
Continued…

34.  Docker Help:-
Continued…

35.  Docker Machine commands:-
Continued…

36.  Starting Docker Service :-
 Starting Docker as Daemon :-
Continued…

37.  Before creating a container we can see the list of
images available in our machine.
How to create a container?

38.  Creating a container:-
Continued…

39.  Listing containers :-
Continued…

40.  Installing Apache Server :-
Multiple Versions Of Web Servers

41.  Installing Apache-php :-
Continued…

42.  Listing all images :-
Continued…

43.  Inspecting a Container :-
Continued…

44.  Homepage of Apache :-
Continued…

45.  Homepage of Apache-php :-
Continued…

46.  Docker Toolbox is used on windows operating
system.
 It uses oracle virtualbox instead of hyper-v.
 Nested virtualization scenarios, such as running
docker for windows on a VMWare or parallel
instances might work but come with no guarantees
(i.e not officially supported.)
Installing Docker on Windows

47.  Docker Toolbox welcome screen & Server creation :-
Continued…

48.  Remote login into Server using ssh & pulling images :-
Continued…

49. Continued…

50.  Creating Docker Client :-
Continued…

51.  Docker Client accessing Docker Server :-
 Command : docker-machine ssh ServerMachine
Continued…

52.  Install Docker Engine for centOS as it will be our
Docker Server.
 Install Docker Toolbox or Docker for windows in all
windows computers as these computers will be our
Docker Clients.
 Setup network between Server and Client.
How to implement Docker in RCC?

53.  Once successful networking is done , Docker Machine
will be created which will contain required images.
 Docker Client will run the containers which will be
available in Docker Machine using ssh.
Continued…

54. 1. https://docs.docker.com
2. https://www.digitalocean.com
3. https://www.liquidweb.com
4. https://www.jessfraz.com
5. https://hub.docker.com
6. D. Jaramillo, D. V. Nguyen and R. Smart, "Leveraging
microservices architecture by using Docker
technology," SoutheastCon 2016, Norfolk, VA, 2016,
pp. 1-5. doi: 10.1109/SECON.2016.7506647
References

55. Thank You