Update Prometeus and Grafana charts (#41)

* Update Prometeus and Grafana charts
- Update the README.md file
- Update the Chart.yaml file. Add dependencies to the prometheus and grafana charts
- Update the values.yaml file. Using custom values for Rahti
- Update the values.schema.json file. New schema for the values.yaml file
- Update the templates/NOTES.txt file. Add the instructions to create the routes for Grafana and Prometheus

* Add Routes. Edit NOTES.txt

charts/prometheus-grafana/Chart.yaml

@@ -1,8 +1,15 @@
 apiVersion: v2
 name: prometheus-grafana-helm
+dependencies:
+  - name: prometheus
+    repository: https://prometheus-community.github.io/helm-charts
+    version: 27.5.x
+  - name: grafana
+    repository: https://grafana.github.io/helm-charts
+    version: 8.10.x
 description: Prometheus and Grafana Helm Chart for Rahti platform
   Link to the repo https://github.com/CSCfi/helm-charts
-version: 1.1.1
+version: 2.0.0
 sources:
 - https://github.com/CSCfi/helm-charts
-icon: https://upload.wikimedia.org/wikipedia/commons/thumb/3/3b/Grafana_icon.svg/351px-Grafana_icon.svg.png
+icon: https://miro.medium.com/v2/resize:fit:640/format:webp/0*4G5AVIBCAKMU1Ctl.png

charts/prometheus-grafana/README.md

@@ -5,7 +5,7 @@ helm upgrade --install graf-prom .
 ```
 
 ## Explanations
-This Helm Chart helps you to deploy Grafana and Prometheus on CSC Rahti2 (Openshift 4).  
+This Helm Chart helps you to deploy Grafana and Prometheus on CSC Rahti (Openshift 4).  
 If you want to use it with different values, you can edit `values.yaml` file and then run:  
 ```sh
 helm upgrade --install graf-prom . -f {custom_values.yaml}
@@ -15,33 +15,40 @@ The password to access Grafana WebUI is generated randomly and won't change if y
 
 ## Parameters
 
-### HedgeDoc parameters
-
-| Name                                                 | Description                                             | Value                             |
-| ---------------------------------------------------- | ------------------------------------------------------- | --------------------------------- |
-| `prometheus.appName`                                 | Name of your app.                                       | `prometheus`                      |
-| `prometheus.image`                                   | Name of the `prometheus` image                          | `prom/prometheus:v2.50.1`         |
-| `prometheus.retentionTime`                           | Define how long data is kept in time-series database    | `15d`                             |
-| `prometheus.limits.memory`                           | Define the maximum of amount of memory                  | `4Gi`                             |
-| `prometheus.requests.memory`                         | Define the minimum guaranteed amount of memory          | `4Gi`                             |
-| `prometheus.pvc.storageSize`                         | Define the size of the Persistent Volume Claim          | `5Gi`                             |
-| `prometheus.service.type`                            | Define the service type                                 | `ClusterIP`                       |
-
-### Grafana parameters
-
-| Name                                                 | Description                                             | Value                                      |
-| ---------------------------------------------------- | ------------------------------------------------------- | ------------------------------------------ |
-| `grafana.appName`                                    | Name of your app.                                       | `grafana`                                  |
-| `grafana.image`                                      | Name of the `prometheus` image                          | `grafana/grafana:10.2.4`                   |
-| `grafana.limits.memory`                              | Define the maximum of amount of memory                  | `1Gi`                                      |
-| `grafana.requests.memory`                            | Define the minimum guaranteed amount of memory          | `1Gi`                                      |
-| `grafana.random_pw_secret_key`                       | Key to store the password                               | `admin-password`                           |
-| `grafana.secret.admin-username`                      | Name of the user to connect to prometheus webUI         | `admin`                                    |
-| `grafana.secret.admin-password`                      | Function that retrieve the generated password           | `'{{- include "random_pw_reusable" . - }}` |
-| `grafana.service.type`                               | Define the service type                                 | `ClusterIP`                                |
-| `grafana.route.tls.termination`                      | Create an OpenShift route                               | `edge`                                     |
-| `grafana.route.tls.insecureEdgeTerminationPolicy`    | Create an OpenShift route                               | `Redirect`                                 |
-| `grafana.pvc.storageSize`                            | Define the size of the Persistent Volume Claim          | `5Gi`                                      |
+We created a default `values.yaml` file that is compatible with our platform Rahti. This Helm Chart is using the official from Prometheus and Grafana.
+Take a look:
+
+- [Prometheus Community](https://github.com/prometheus-community/helm-charts/blob/main/charts/prometheus/README.md)
+- [Grafana](https://github.com/grafana/helm-charts/blob/main/charts/grafana/README.md)
+
+There are two mandatory fields that you must fill out:
+- `prometheus.serverFiles.prometheus.yml.scrape_configs.1.kubernetes_sd_configs.0.namespaces.names.0`
+  ```yaml
+  - job_name: 'kubernetes-service-endpoints'
+    honor_labels: true
+    kubernetes_sd_configs:
+      - role: endpoints
+        namespaces:
+          names:
+            -  # Enter the name of your namespace/project here
+  ```
+
+- `prometheus.serverFiles.prometheus.yml.scrape_configs.2.kubernetes_sd_configs.0.namespaces.names.0`
+  ```yaml
+  - job_name: 'kubernetes-pods'
+    honor_labels: true
+    kubernetes_sd_configs:
+      - role: pods
+        namespaces:
+          names:
+            -  # Enter the name of your namespace/project here
+  ```
+
+In order to have your pods monitored by Prometheus, you need to add these annotations:
+
+* `prometheus.io/scrape`: Only scrape pods that have a value of `true`,
+* `prometheus.io/path`: If the metrics path is not `/metrics` override this.
+* `prometheus.io/port`: Scrape the pod on the indicated port instead of the default of `9102`.
 
 ## Cleanup
 To delete all the resources, simply uninstall the Helm Chart:

charts/prometheus-grafana/templates/NOTES.txt

@@ -1,23 +1,32 @@
-=======================================
+========================================
   CSC Prometheus-Grafana Helm deployed
-=======================================
+========================================
+===========
+  GRAFANA
+===========
+Wait a few seconds. Time for the application to be fully deployed.
 
 Get the Grafana application URL by running these commands:
 
-  export GRAFANA=$(oc get route --namespace={{ .Release.Namespace }} -o yaml | yq '.items[] | select(.metadata.name == "{{ .Values.grafana.appName }}-route") .spec.host' -r)
+  export GRAFANA=$(oc get route --namespace={{ .Release.Namespace }} -o yaml | yq '.items[] | select(.metadata.name == "grafana") .spec.host' -r)
   echo "GRAFANA server URL: http://$GRAFANA"
 
 The password for the access is generated randomly.
 To retrieve the information, run these commands:
 
-  echo Username: $(oc get secret --namespace={{ .Release.Namespace }} {{ .Values.grafana.appName }} -o jsonpath="{.data.admin-username}" | base64 -d)
-  echo Password: $(oc get secret --namespace={{ .Release.Namespace }} {{ .Values.grafana.appName }} -o jsonpath="{.data.admin-password}" | base64 -d)
+  echo Username: $(oc get secret --namespace={{ .Release.Namespace }} {{ .Release.Name }}-grafana -o jsonpath="{.data.admin-user}" | base64 -d)
+  echo Password: $(oc get secret --namespace={{ .Release.Namespace }} {{ .Release.Name }}-grafana -o jsonpath="{.data.admin-password}" | base64 -d)
 
-The Route to Prometheus is not deployed by default. If you want to access Prometheus, you can type this command:
 
-  oc create route edge prometheus-route --service={{ .Values.prometheus.appName }}-service --insecure-policy='Redirect' --port=9090
+========================
+  PROMETHEUS (OPTIONAL)
+========================
+The Route to Prometheus is not deployed by default. You can change the behaviour by setting `true` in the `values.yaml`
+or you can type this command:
 
-And then, you can retrieve the Prometheus URL by running these commands:
+  oc --namespace {{ .Release.Namespace }} create route edge prometheus --service={{ .Release.Name }}-prometheus-server --insecure-policy='Redirect' --port=9090
 
-  export PROMETHEUS=$(oc get route --namespace={{ .Release.Namespace }} -o yaml | yq '.items[] | select(.metadata.name == "{{ .Values.prometheus.appName }}-route") .spec.host' -r)
+You can retrieve the Prometheus URL by running these commands:
+
+  export PROMETHEUS=$(oc get route --namespace={{ .Release.Namespace }} -o yaml | yq '.items[] | select(.metadata.name == "prometheus") .spec.host' -r)
   echo "PROMETHEUS server URL: http://$PROMETHEUS"