Brief intro to Docker and how to setup Weblogic 12c simple domain using Docker

1. Weblogic 12c on DOCKER
By Chandra Rai

2. Agenda:
 Overview of Docker.
 Docker components and elements.
 Why Docker and its benefits.
 Steps to install Docker on RHEL.
 Steps to install WebLogic 12c using Docker.
 Demo.
ORACLE WEBLOGIC 12c ON DOCKER

3.  Docker is a platform that enables users to build, package,
ship and run applications.
 Docker users package their applications into a Docker
image.
 Docker images are portable artifacts that can be
distributed across Linux environments.
OVERVIEW OF DOCKER

4.  Docker is based on Linux LXC.
 The main secret sauce behind Docker is
Isolation with namespace.
Some of the namespaces Docker uses are:
Pid, Net, IPC, Mnt, Uts
Isolation with Cgroups. For ex:
Memory, CPU etc
Union File System
HOW DOES IT WORK

5.  Docker Client
 Docker Daemon
 Docker Registry
 Docker Container
 Docker Images
 Docker File
DOCKER COMPONENTS
Source:https://docs.docker.com/engine/a
rticle-img/architecture.svg

6.  Docker containers are lightweight
 Docker containers are portable.
 Docker enables devops by breaking the silos between
development and operation teams.
 Enables consistent environments or immutable
infrastructure. Hence solving the common problem of
mismatch between dev, test and prod envs.
BENEFITS OF DOCKER

7.  Docker is supported on RHEL 7
 Minimum kernel version required is 3.10
 Docker can be installed using the “yum” package
manger.
 Install the docker package using the command : “sudo
yum install docker-engine”
 Start the docker engine: “sudo service docker start”
 Check you have a working install: “sudo docker info”
DOCKER INSTALLATION

8.  Weblogic 12c is certified on Docker.
 Oracle has released dockerfiles and supporting scripts to
build Weblogic docker images on GitHub.
(https://github.com/oracle/docker-
images/tree/master/OracleWebLogic)
 Using these dockerfiles custom WLS docker image can be
built.
 Pre-requisites are required JDK and WLS binaries should
be copied to appropriate location before bootstrapping
the image via dockerfile.
INSTALL WEBLOGIC 12c USING
DOCKER

9.  The following steps will create a Weblogic docker image using
which the containers can be spawned.
 sudo docker build https://github.com/oracle/docker-
images/OracleWeblogic
 From OracleWeblogic/samples/1213-domain folder run sudo
docker build -t oracle/weblogic:12.1.3 .
 Now its time to boot up the container for Admin server using
sudo docker run –d –p 7001:7001 –name wlsadmin
oracle/weblogic:12.1.3
 Verify at http://ip:7001/console (Ip is public ip of aws instance)
INSTALL WEBLOGIC 12c USING
DOCKER… Contd..

10.  This talk gives an overview of Docker and simple
application/use of it to dockerize Weblogic.
 The intent is to spread the Dev-ops philosophy within our
company.
 Maybe in future implement OFMW development labs
using Docker.
Takeaways…..

11. DEMO

12.  https://docs.docker.com
 https://docs.oracle.com/middleware/1213/wls/DOCKR/
configuration.htm#DOCKR130
 http://www.oracle.com/technetwork/middleware/we
blogic/overview/weblogic-server-docker-containers-
2491959.pdf
REFERENCES

13. Q&A