harol5 / planetarium

Developing and deploying java app in GKE implementing Jenkins, Prometheus and Loki.

Deploying in minikube

1. make sure you're in the right folder
2. start minikube
3. install nginx helm chart, then run helm upgrade --install ingress-nginx ingress-nginx
   --repo https://kubernetes.github.io/ingress-nginx
   --namespace ingress-nginx --create-namespace see https://kubernetes.github.io/ingress-nginx/
4. install loki-stack https://github.com/grafana/helm-charts/tree/main/charts/loki-stack helm upgrade --install loki grafana/loki-stack
   --set promtail.enabled=false
5. install kube-prometheus-stack chart https://github.com/prometheus-community/helm-charts/tree/main/charts/kube-prometheus-stack then run <helm install -f prometheus-grafana-values.yml prometheus-monitoring prometheus-community/kube-prometheus-stack>
6. helm install jenkins-planetarium jenkins/jenkins -f jenkins-values.yml
7. apply promtail-config.yml
8. apply planetarium-config.yml
9. planetarium-secret.yml(command line?)
10. apply planetarium-services-monitor.yml
11. apply planetarium.yml
12. apply ingress-service.yml
13. run on different terminal.
14. test the app.

---

Deploying in GKE

Postgres

• kubectl apply -f postgres-db
• create tables= kubectl exec -it pod/postgres-deployment-7cf95d7989-swcmr -c postgres -- psql -d postgres -U postgres

Ingress helm

• helm repo add ingress-nginx https://kubernetes.github.io/ingress-nginx
• helm install my-release ingress-nginx/ingress-nginx
• kubectl create clusterrolebinding cluster-admin-binding
  --clusterrole cluster-admin
  --user $(gcloud config get-value account)
• kubectl apply -f https://raw.githubusercontent.com/kubernetes/ingress-nginx/controller-v1.5.1/deploy/static/provider/cloud/deploy.yaml

Prometheus monitoring

• helm install -f prometheus-grafana-values.yml prometheus-monitoring prometheus-community/kube-prometheus-stack

Loki stack helm

• helm upgrade --install loki grafana/loki-stack #make persistent, edit file to do so.
• apply loki-pvc.yml
• kubectl edit statefulset.apps/loki

volumeMounts:

• mountPath: /tmp name: tmp
• mountPath: /etc/loki name: config
• mountPath: /data name: storage
• mountPath: /tmp/loki/ name: loki-storage

volumes:

• emptyDir: {} name: tmp
• name: config secret: defaultMode: 420 secretName: loki
• emptyDir: {} name: storage
• name: loki-storage persistentVolumeClaim: claimName: loki-pvc

Jenkins helm

• helm install jenkins-planetarium jenkins/jenkins -f jenkins-values.yml

• kubectl exec --namespace default -it svc/jenkins-planetarium -c jenkins -- /bin/cat /run/secrets/additional/chart-admin-password && echo

• kubectl create clusterrolebinding jenkins-deploy
  --clusterrole=cluster-admin --serviceaccount=default:jenkins-planetarium

  Jenkins setup with github

   1. create pipiline
   2. Build Triggers: githud hook
   3. pipeline script from scm > add github repo url > /main > Script path: Jenkinsfile > uncheck Lightweight checkout.
   4. go to the github repo and add wedHook: settings>Webhooks>addWebhook> http://{ip}/jenkins/github-webhook/
   5. create Jenkinsfile
   6. git add, git commit, git push
  

Planetarium app

• kubectl apply -f planetarium-app
• kubectl apply -f canary
• after pushing into github, jenkins should build test and deploy the planetarium and ingress service manifest to GKE.

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