Docker Container

Oracle Database on

Guatemala, September 2017

• Open Source

• Container Technology

• Portable standard

• Runs on Linux (Microsoft, MacOS, Solaris)

• Quickly scale

• Improve it efficiency

• SIMPLY SHARE APPLICATIONS

Containers are an app

level construct

VMs are an infrastructure level

construct to turn one machine

into many servers

Docker is not a lightweight VirtualBox - it's about isolation.

- Containers run on Linux kernel of host. Use de same kernel

- Containers are visible on host.

- Containers can’t access to host.

Speed• No OS to boot =

applications online in seconds

Portability• Less dependencies

between process layers = ability to move between infrastructure

Efficiency• Less OS overhead• Improved VM

density

Concepts BasicsIntroduction to Docker

Dockerfile

File like a script for build Docker images.

Image

The basis of a Docker container. The content at rest.

Container

The image when it is ‘running.’ The standard unit for app service.

Docker Engine

The software that executes commands for containers. Networking and volumes are part of Engine. Can be clustered together.

Registry

Stores, distributes and manages Docker images.

Control Plane

Management plane for container and cluster orchestration.

• Like a script for build Docker images

• Lightweight, stand-alone, executable package

• Includes everything needed to run a piece of software

• Including the code, a runtime, libraries, environment variables, and config files

Dockerfile

Docker Image

Script to build a image

Includes everything needed to run an app

$ docker build –t name .

• Package format

• Layer incremental, copy on write file system.

• “Application with all dependencies”

• How to get Docker Images? Create image yourself

Get Prebuilt Image from Repository (Docker Store)

$ docker images -ls

• Isolated runtime of Docker image (Instance)

• Starts up in milliseconds

• Sandboxing uses Linux namespaces and cgroups (RAM, CPU, filesystem) isolated part of your Linux

• Open Container Standard / Linux Foundation $ docker run -d –p 8080:9999 oracledatabase

• Docker image is not found?

-> pulled from registry

• Push your image to registry

docker push yourname/newimage

• Free account includes 1 private registry

• Also private, S3, Azure data store, Oracle

• Or use Github to export your images

Docker Evolution

2004Solaris Containers / Zones technology

introduced

2008Linux containers

(LXC 1.0) introduced

2013Solomon Hykes

starts Docker as an internal project within dotCloud

Mar 2013Docker released to open source

Feb 2016Docker introduces first

commercial product – now called Docker Enterprise

Edition

TodayOpen source community includes:

- 3,300+ contributors- 43,000+ stars- 12,000+ forks

Service

ProviderTech

Public

SectorInsurance

Healthcare

& Science

Financial

Services

But …Oracle Database on Docker ?

• It is possible

• Completely automated

• Support 11g and 12c

• Database is persistent (Share a host filesystem)

• Works like a normal database

• Customizable

• No OS Depended

• Supported by Oracle

• Prerequisite: Docker installed

Some Oracle database features are not supported in this Docker image release:

• Automatic Memory Management (AMM)

• Multiples Oracle Homes

• Oracle Data Guard

• Multiples instances on the container

• Oracle Grid Infrastructure

Official Image from Docker Store:

https://store.docker.com/images/oracle-database-enterprise-edition

Official Image from Oracle Store:

https://container-registry.oracle.com/

Built your own Image from Official source for Docker configurations by Oracle:

https://github.com/oracle/docker-images

1. Login in Docker Store (create Docker account before)

$ docker run -d -it --name <Oracle-DB> store/oracle/database-enterprise:12.2.0.1

2. Run Oracle Database Container. Where Oracle-DB is the container name

$ docker login

3. Connecting to the Database Container. The default password to connect to the database with sys user is Oradoc_db1

$ docker exec -it <Oracle-DB> bash -c "source /home/oracle/.bashrc; sqlplus /nolog"

See details:

https://store.docker.com/images/oracle-database-enterprise-edition/plans/08cf8677-bb8f-453c-b667-6b0c24a388d4?tab=instructions

$ docker build --force-rm=true --no-cache=true -t oracle/database:12.2.0.1-ee -f Dockerfile.ee .

1. Download the Github repository.

https://github.com/oracle/docker-images

2. On your PC Extract Repository

3. Copy Oracle Software for Linux x64 in the folder appropriate to version.

e.g. For Oracle Database 12.2 copy to folder ./docker-images/OracleDatabase/dockerfiles/12.2.0.1/

4. Build Image

e.g. Build Image for Oracle Database 12.2 Enterprise Edition

$ docker run --name testdb1 \

-p 1521:1521 -p 5500:5500 \

-e ORACLE_SID=dcdb \

-e ORACLE_PWD=manager1 \

-e ORACLE_CHARACTERSET=WE8MSWIN1252 \

-e ORACLE_CONTAINERDB=false \

oracle/database:12.2.0.1-ee

Container Name

Map Ports

Database name, password and some parameters

Image Name

See details:

https://github.com/oracle/docker-images/tree/master/OracleDatabase

Ready. You can use your Oracle Database on Docker Container!

Thank you!

Jesús Guzmán

Blog: https://susguzman.wordpress.com/

Email: susguzman@gmail.com, jguzman@datum.com.gt

http://www.datum.com.gt/