Friday, November 3, 2017

Oracle ADF on Docker Container

Want to run Oracle ADF on Docker? This is possible, I will explain how. If you are new to Docker, it may require to spend significant amount of time to get started with all different bits and pieces. I will try to explain all essential steps, so that you will get up to speed quickly.

First of all you need to have DB accessible, check my previous post explaining how to run Oracle DB on Docker - Oracle Database Docker Image in Docker Cloud (Digital Ocean). DB is required to install RCU schema for WebLogic installation with JRF files.

I have built my own Oracle Fusion Middleware Docker image using Oracle Docker images - Oracle Fusion Middleware Infrastructure on Docker.

First step is to build Oracle JDK (Server JRE) image, this is pre-requisite to build Oracle Fusion Middleware Docker image. Read through instructions documented on Oracle Fusion Middleware Infrastructure on Docker GitHub page. You should navigate to Oracle Java folder (download Oracle Docker files from GitHub link mentioned above) and copy there JDK installation file:


Run command to create JDK Docker image:

./build.sh

Command output:


Double check to verify if image was created successfully by running docker images command:


Let's move on to Oracle FMW image creation. Navigate to Oracle FMW folder and copy FMW infrastructure installation file (I'm installing 12.2.1.3):


Move one folder up and run command:

./buildDockerImage.sh -s -v 12.2.1.3

To build Oracle FMW image. I use flag -s to skip checksum verification for installation file. You should run command from this folder:


You will see long output in the log for this command:


It installs WLS into Docker image:


Run docker images command to verify if image was created successfully:


In the next step, we will create FMW domain and extend it with ADF support. But before that we need to make sure DB details are set correctly, to be able to install RCU schema. Oracle provides infraDomain file with DB and WLS properties, make sure to set correct DB details. If properties are not correct, RCU creation will fail:


Execute docker run command to startup WLS Docker container. During first start up it will create and extend WLS domain with ADF support:

docker run -d -p 7001:7001 --name RedSamuraiWLS --env-file ./infraDomain.env.list oracle/fmw-infrastructure:12.2.1.3

Flag -d means container will run in detached mode and we will be able to return to command prompt. Port with name is specified along with environment properties file. Make sure to reference FMW image which was created in the step above. Once control is returned back to the prompt, run docker command to check status of docker container (flag -a means to show all containers):

docker ps -a

Container should be in the running state. First startup takes longer, because it requires to setup and extend WLS domain:


Once domain is extended, you will see WebLogic starting:


Finally WebLogic should be in Running state:


Run again docker ps -a command to verify container state, it should be up and running:


Once WLS machine is up, you can navigate to Enterprise Manager through URL from outside of Docker container, for example from your host. Login to EM and you will see Admin server is up, but Managed Server is down. There is a way to startup Managed Server too, but if you want to run ADF apps for DEV environment, realistically speaking Admin server is more than enough for deployment too:


Simply delete (this cab done from EM) Managed Server and cluster, keep only Admin Server:


I have deployed sample ADF application:


This application is based on ADF BC, data source is defined too:


ADF application runs from WebLogic on Docker:


Now lets see how to push newly created container to Docker registry.

First we need to create new Docker image from Docker container. This can be done with docker commit command (pointing to container ID and specifying Docker repository name and tag):

docker commit da03e52b42a2 abaranovskis/redsamurai-wls:v1

Run docker images command to verify new image is created successfully. Next run docker login to authenticate with Docker repository. Run docker push to write image to Docker repository:

docker push abaranovskis/redsamurai-wls:v1

Commands execution sequence:


Pushed image should appear in docker repository:


Once image is in Docker online repository, we can startup online Docker container, so that WLS will be accessible online. This can be done through command line or using Docker Cloud UI interface. You can create new container by referencing image from Docker repository:


Our WLS docker container with ADF support runs on Digital Ocean:


Logs are accessible from Docker Cloud UI and you can see server status:

1 comment:

Theodore KOFFI said...

very helpful tutorial . Thanks