# Ref:- /kra-data/setup/downloads/services

# cd /kra-data/ndml-kra.devops/setup/services/dev/prometheus

# container image download url
  - prom/prometheus - https://hub.docker.com/layers/prom/prometheus/v2.47.0/images/sha256-db03207fa305e4232ae907f04e51fac42ea4c7ca8359812562ed5c8bcc8e34e5?context=explore
  - busybox:1.28 - https://hub.docker.com/layers/library/busybox/1.28/images/sha256-2d8967e4a68583a4bb2d7e236c60a1d72a585439b41e7a77555edad8df0f2bf4?context=explore

# push docker image to private registry
  - docker pull prom/prometheus:v2.47.0
  - docker pull busybox:1.28
  - docker tag prom/prometheus:v2.47.0 private-repo:5000/prom/prometheus:v2.47.0
  - docker tag busybox:1.28 private-repo:5000/busybox:1.28
  - docker push private-repo:5000/prom/prometheus:v2.47.0
  - docker push private-repo:5000/busybox:1.28

# check namespaces
kubectl get ns

# create namespace e-search
kubectl create ns prom/prometheus

# open the prometheus-deployment.yaml file and update mount path inside container, container port, replicas, nodeSelector, and container image.
# open the prometheus-service.yaml file and check service ports.
# open the prometheus-pv-pvc.yaml and update storage and host path.
# open the cluster-role.yaml and check the node resource urls.
# open the cluster-role-binding.yaml and check the binding of cluster role and service account.
# open and check the service account file.
# open the prometheus-configmap.yaml and check the configuration of differnt services such as jenkins, elasticsearch. check the metric path and target.


# deploy the file by below command
kubectl apply -f '*.yaml' -n prometheus 

# output
clusterrolebinding.rbac.authorization.k8s.io/prometheus configured
clusterrole.rbac.authorization.k8s.io/prometheus configured
configmap/prometheus-config configured
deployment.apps/prometheus configured
service/prometheus-service configured
persistentvolume/pv-prometheus configured
persistentvolumeclaim/pvc-prometheus configured
serviceaccount/prometheus configured

# confirmed deployment by running below command
kubectl get all -n pometheus  --------------------- (will give pods, deployment and service data)

# check whether pods are in running state or not
NAME                              READY   STATUS    RESTARTS   AGE
pod/prometheus-74ddcc75f9-gz7sz   1/1     Running   0          3h54m

NAME                         TYPE       CLUSTER-IP       EXTERNAL-IP   PORT(S)          AGE
service/prometheus-service   NodePort   10.102.96.39     <none>        8081:30909/TCP   19d

NAME                         READY   UP-TO-DATE   AVAILABLE   AGE
deployment.apps/prometheus   1/1     1            1           15d

NAME                                    DESIRED   CURRENT   READY   AGE
replicaset.apps/prometheus-74ddcc75f9   1         1         1       15d

# check logs using below command
kubectl logs -n prometheus <pod-name>

# check description of pod using below command
kubectl describe pod -n prometheus <pod-name>
e.g. kubectl describe pod -n pod/prometheus-74ddcc75f9-gz7sz 

# exec into pod 
kubectl exec -it -n prometheus <pod-name> -- /bin/bash