Listing 1: Einfache Kubernetes-Anwendung als CRD-Beispiel

apiVersion: apps/v1
kind: Deployment
metadata:
name: simple-deployment
spec:
replicas: 1
selector:
matchLabels:
app: trivial-go-web-app
template:
metadata:
labels:
app: trivial-go-web-app
spec:
containers:
- name: webserver-simple
image: docker.io/kostiscodefresh/
gitops-simple-app:v1.0
ports:
- containerPort: 8080
---
apiVersion: v1
kind: Service
metadata:
name: simple-service
spec:
type: ClusterIP
selector:
app: trivial-go-web-app
ports:
- protocol: TCP
port: 80
targetPort: 8080


Listing 2: Argo-CD-Applikation per Manifest ausrollen

apiVersion: argoproj.io/v1alpha1
kind: Application
metadata:
name: demo
namespace: argocd
finalizers:
- resources-finalizer.argocd.argoproj.io
spec:
project: default
source:
repoURL: https://github.com/codefreshcontrib/gitops-certification-examples.git
targetRevision: HEAD
path: ./declarative/manifests
directory:
recurse: false
destination:
server: https://kubernetes.default.svc
namespace: default
syncPolicy:
automated:
prune: true
selfHeal: true
allowEmpty: false


Listing 3: Multiple Anwendungen via App of Apps

apiVersion: argoproj.io/v1alpha1
kind: Application
metadata:
name: app-of-apps
namespace: argocd
spec:
project: default
source:
repoURL: https://github.com/your-org/
your-repo.git
targetRevision: HEAD
path: apps
destination:
server: https://kubernetes.default.svc
namespace: argocd


Listing 4: Dynamisches Deployment mit ApplicationSets

apiVersion: argoproj.io/v1alpha1
kind: ApplicationSet
metadata:
name: my-app-set
namespace: argocd
spec:
generators:
- list:
elements:
- namespace: prod
environment: production
- namespace: staging
environment: staging
template:
metadata:
name: "{{namespace}}-app"
spec:
project: default
source:
repoURL: https://github.com/your-org/
your-repo.git
targetRevision: HEAD
path: charts/my-app
helm:
releaseName: "{{namespace}}-app"
values: |
environment: {{environment}}
destination:
server: https://kubernetes.default.svc
namespace: "{{namespace}}"