This is a companion repository that goes along with my "Pragmatic Gitops: Part 1 - Kustomize" blog post.
Here, you can find everything you need to start with the same project in the "gitops-demo" namespace so you can try to replciate the process yourself.
There is also the final "base" and "overlays" directories, so you can see what the finished product should look like.
If you want to start off with the same setup used in the blog, login to your OpenShift cluster (4.5+) with the oc command line tool and run the following:
$ git clone https://github.com/pittar-blogs/pragmatic-gitops-01-kustomize.git
$ cd pragmatic-gitops-01-kustomize
$ oc new-project gitops-demo
$ oc apply -f demo
This will spin up the same app and database from the blog post. If the petclinic app starts before the MySQL database initializes, you will have to scale the app down to zero, then back up again (or just kill the pod) in order for the app to start properly once the database is ready.
If you just want to deploy the resulting DEV and PROD environments, then first login to your OpenShift cluster with the oc command line tool. You should be logged in as a user than can create new namespaces. Then, run the following commands. You can use either kubectl of oc to run the apply commands.
$ git clone https://github.com/pittar-blogs/pragmatic-gitops-01-kustomize.git
$ cd pragmatic-gitops-01-kustomize
$ kubectl apply -k overlays/dev
$ kubectl apply -k overlays/prod
This will create the gitops-dev and gitops-prod namespaces and deploy the app in both.
Don't want to have to clone this repository? No problem! Making sure you have cli access to your OpenShift cluster, run the following commands (you can also substitute oc for kubectl if you like):
$ kubectl apply -k https://github.com/pittar-blogs/pragmatic-gitops-01-kustomize/overlays/dev?ref=main
$ kubectl apply -k https://github.com/pittar-blogs/pragmatic-gitops-01-kustomize/overlays/prod?ref=main
The next part in the series will use Argo CD to deploy the application and provide lifecycle capabilities.