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Multi-Cluster-App-Dispatcher Controller Build Instructions

This document will show how to build the Multi-Cluster-App-Deployer (MCAD) Kubernetes Controller that operates on an AppWrapper kubernetes custom resource definition. Instructions are for the master branch.

1. Pre-condition

Docker Environment

To build Multi-Cluster-App-Deployer, a running Docker environment must be available. Here is a document on Getting Started with Docker.

Clone Multi-Cluster-App-Deployer Git Repo

Clone this repo in your local environment:

Option 1: Clone this github project to your local machine via HTTPS

$ git clone https://github.com/IBM/multi-cluster-app-dispatcher.git
Cloning into 'multi-cluster-app-dispatcher'...
Checking connectivity... done.
Checking out files: 100% (####/####), done.
$

Option 2: Clone this github project to your local machine via SSH

$ git clone git@github.com:IBM/multi-cluster-app-dispatcher.git
Cloning into 'multi-cluster-app-dispatcher'...
Checking connectivity... done.
Checking out files: 100% (####/####), done.
$

2. Building the Multi-Cluster-App-Deployer Controller

Build the Executable

Run the build script build.sh:

$ cd multi-cluster-app-dispatcher/deployment/

$ ./build.sh
...
+ cd ..
+ make generate-code
Compiling deepcopy-gen
Generating deepcopy
go build -o _output/bin/deepcopy-gen ./cmd/deepcopy-gen/
_output/bin/deepcopy-gen -i ./pkg/apis/controller/v1alpha1/ -O zz_generated.deepcopy
+ make kar-controller
mkdir -p _output/bin
CGO_ENABLED=0 GOARCH=amd64 go build -o _output/bin/kar-controllers ./cmd/kar-controllers/
$

Ensure the executables: deepcopy-gen, mcad-controllers are created in the target output directory:

$ ls ../_output/bin/
deepcopy-gen	mcad-controller
$

Build the Multi-Cluster-App-Dispatcher Image

Run the image build script image.sh:

$ ./image.sh
...
+ make images
Changed to executable directory
Build the docker image
cd ./_output/bin
docker build --no-cache --tag mcad-controller:v1.14 ...
Sending build context to Docker daemon  122.7MB
Step 1/7 : From ubuntu:18.04
 ---> ea4c82dcd15a
Step 2/7 : ADD mcad-controller /usr/local/bin
 ---> 674cefbce55a
...
 ---> 911c7c82b5ee
Step 7/7 : WORKDIR /usr/local/bin
 ---> Running in f2db4649e7a6
Removing intermediate container f2db4649e7a6
 ---> 1dbf126976cf
Successfully built 1dbf126976cf
Successfully tagged mcad-controller:v1.14
$

Note the image name and image tag from the image build script (./image.sh) above. For example the image name and image tag built after running the example above is mcad-controller:v1.14. List the Docker images to ensure the image exists.

$ docker images mcad-controller
REPOSITORY          TAG                 IMAGE ID            CREATED             SIZE
mcad-controller     v.1.14            1dbf126976cf        11 minutes ago      272MB
$

Push the Multi-Cluster-App-Dispatcher Image to an Image Repository

The following example assumes an available <repository>/mcad-controller on Docker Hub

$ docker login
$ docker push <respository>/mcad-controller:v1.14

Refer to deployment on how to deploy the multi-cluster-app-dispatcher as a controller in Kubernetes.