Part 1 - Prerequisites

• Register at LinuxOne Community Cloud here for a trial account and get a RHEL VM.

• Click on Try Virtual Machines on the LinuxONE™ Community Cloud

• Install Git

• Install docker:

sudo su
cd ~
yum -y install wget
wget ftp://ftp.unicamp.br/pub/linuxpatch/s390x/redhat/rhel7.3/docker-17.05.0-ce-rhel7.3-20170523.tar.gz
tar -xzvf docker-17.05.0-ce-rhel7.3-20170523.tar.gz
cp docker-17.05.0-ce-rhel7.3-20170523/docker* /usr/bin/
docker daemon -g /local/docker/lib &

Part 2 – IBM db2 Database Container

git clone https://github.com/codesenju/imdb_lite.git
cd imdb_lite 

• Download data.tar.gz file here which has the records for the movie database.
• Copy the data.tar.gz into your folder /imdb_lite.

• Run the command ls -alh to view directory contents and if your directory looks similar to the image bellow you can move on to the next step to build your db2 image.

• Build your db2 image.

rm -rf images/ #first lets remove unnecessary files
docker build -t codesenju/imdb_lite .

• After successful build, run the command docker images to see your image loaded into docker. On completion, you should see the following output on console:

• Create a container network that will be used by your two micro services.

docker network create mynet

• Run your db2 image as a container.

docker run -itd --net mynet --name micro_db2 --privileged=true -p 50000:50000 -e LICENSE=accept -e DB2INST1_PASSWORD=db2admin -e DBNAME= -v /usr/src/app:/database codesenju/imdb_lite

• After successfully executing the last command you can check if you have a container instance of db2 running by executing the following command:

docker ps

• You should see the following output on console:

• Now we going to login into the db2 container and configure the database schema.

docker exec -ti <CONTAINER-ID> bash -c "su - db2inst1"
cd /var/custom
./createschema.sh

• When you're done exit the container with exit.

Part 3 – Node.js App Container

cd ~
git clone https://github.com/codesenju/nodejs_api4db2.git
cd nodejs_api4db2
docker build -t codesenju/nodejs_api4db2 .
docker run --net mynet -p 49160:8081 -d codesenju/nodejs_api4db2

Part 4 - Test your environment

• Test within the LinuxOne machine using cURL:

curl localhost:49160
curl localhost:49160/api/all

• Test from any browser by entering the following url:

<vm-ip>:49160/ # replace <vm-ip> with your LinuxOne machine IP address.
<vm-ip>:49160/api/all

• Test with Postman:

<vm-ip>:49160/ # replace <vm-ip> with your LinuxOne machine IP address.
<vm-ip>:49160/api/all