bhoopesh123 / postgres-grafana

postgres-grafana

1. Install Kube-Prometheus-Stack on cluster:

Reference Documentation is as below:

https://github.com/prometheus-community/helm-charts/tree/main/charts/kube-prometheus-stack

This will installs the kube-prometheus stack, a collection of Kubernetes manifests, Grafana dashboards, and Prometheus rules combined with documentation and scripts to provide easy to operate end-to-end Kubernetes cluster monitoring with Prometheus using the Prometheus Operator.

Below Steps needs to be followed:

helm repo add prometheus-community https://prometheus-community.github.io/helm-charts
helm repo update
kubectl create ns metrics
kubectl config set-context --current --namespace=metrics

helm upgrade --install grafana prometheus-community/kube-prometheus-stack

2. Install Postgres database on cluster:

helm repo add bitnami https://charts.bitnami.com/bitnami
helm install postgresql-dev bitnami/postgresql
kubectl get pods 

kubectl get secret/postgresql-dev -oyaml 

kubectl exec -it pod/postgresql-dev-0 sh


echo OTYwV0FRemZHZA== | base64 -d
POSTGRES_PASSWORD="960WAQzfGd"
PGPASSWORD="$POSTGRES_PASSWORD" psql --host 127.0.0.1 -U postgres -d postgres -p 5432

CREATE DATABASE testdb;

CREATE TABLE hello_world 
(
region      text,
country     text,
year        int,
production  int,
consumption int
);

INSERT INTO hello_world (region, country, year, production, consumption) VALUES ('America', 'USA', 1998, 2014, 12897);

kubectl get svc
kubectl edit svc/postgresql-dev 

Change the Service to Load Balancer so that it can be accessed from Grafana

To Search all of the time series data points grouping by job

count({__name__=~".+"}) by (job)

3. Install Prometheus Postgres Exporter

helm repo add prometheus-community https://prometheus-community.github.io/helm-charts
helm repo update

helm upgrade --install postgres-exporter prometheus-community/prometheus-postgres-exporter -f postgress-exporter-values.yaml

kubectl port-forward svc/postgres-exporter-prometheus-postgres-exporter 8080:80

4. Install Prometheus Mysql Exporter Dashboard

https://grafana.com/grafana/dashboards/12485-postgresql-exporter/

Add the below id as Grafana Dashboards and monitor Postgres DB 

    12485