OpenShift GitOps with SpringBoot Petclinic App

openshift_gitops_spring_petclinic.md

OpenShift GitOps

Steps to install GitOps in OpenShift with SpringBoot Petclinic application.

Prerequisite

1. OpenShift 4.7
2. oc logged in as cluster-admin

Setup

1. Install OpenShift GitOps from the OperatorHub
2. Verify

watch -n 5 oc get pods -n openshift-gitops

You should get output like

NAME                                                          READY   STATUS    RESTARTS   AGE
cluster-b5798d6f9-xq7pb                                       1/1     Running   0          28s
kam-69866d7c48-5pcg6                                          1/1     Running   0          27s
openshift-gitops-application-controller-0                     1/1     Running   0          26s
openshift-gitops-applicationset-controller-6447b8dfdd-tbxgw   1/1     Running   0          25s
openshift-gitops-redis-74bd8d7d96-9pvcx                       1/1     Running   0          26s
openshift-gitops-repo-server-c999f75d5-47psw                  1/1     Running   0          26s
openshift-gitops-server-6ff4fbc8f6-mb8dn                      1/1     Running   0          26s

3. Get URL and open ArgoCD in browser

oc get route openshift-gitops-server -n openshift-gitops -o jsonpath='{.spec.host}'

4. Get password to log into ArgoCD, username is admin

oc extract secret/openshift-gitops-cluster -n openshift-gitops --to=-

Deploy UI Update

1. Create basic cluster update

oc apply -f https://raw.githubusercontent.com/jkeam/openshift-gitops-getting-started/bugfix/1_1/argo/cluster.yaml

2. Verify installation, it will say that it is OutOfSync because we chose manual reconciliation

oc get application -n openshift-gitops

3. Log into ArgoCD and see that it also says OutOfSync. Click the Sync button and then Synchronize button. Then view OpenShift and click the app launcher in the upper right to see a new link added to the Developer Blogs. Also a new spring-petclinic project has been created.

Deploy App

The cluster.yaml we applied before created the necessary namespace and RoleBinding to allow us to be able to deploy the spring petclinic app. Let's do that now.

oc apply -f https://raw.githubusercontent.com/jkeam/openshift-gitops-getting-started/bugfix/1_1/argo/app.yaml