Monitoring PostgreSQL with Postgres Exporter: Complete Guide
Postgres Exporter is a monitoring tool used with Prometheus to collect and expose PostgreSQL metrics. It enables real-time monitoring of performance, connections, queries, and other database activities. Learn how to set it up and use it effectively.
What is Postgres Exporter?
Postgres Exporter is a lightweight monitoring tool that integrates PostgreSQL with Prometheus. It gathers metrics about the database and exposes them via HTTP endpoints for Prometheus to scrape.
Key Features:
How to set up Postgres Exporter?
Docker or Kubernetes (optional for containerized setups)
Step 1: Install Postgres Exporter
Using Docker
Run the Postgres Exporter container: docker run -d \ --name=postgres-exporter \ -e DATA_SOURCE_NAME="postgresql://user:password@hostname:5432/postgres?sslmode=disable" \ -p 9187:9187 \ prometheuscommunity/postgres-exporter
Note: Replace user, password, and hostname with your PostgreSQL credentials.
Kubernetes Deployment
Create a postgres-exporter-deployment.yaml file:
apiVersion: apps/v1
kind: Deployment
metadata:
name: postgres-exporter
spec:
replicas: 1
selector:
matchLabels:
app: postgres-exporter
template:
metadata:
labels:
app: postgres-exporter
spec:
containers:
- name: postgres-exporter
image: prometheuscommunity/postgres-exporter
ports:
- containerPort: 9187
env:
- name: DATA_SOURCE_NAME
value: "postgresql://user:password@hostname:5432/postgres?sslmode=disable"
---
apiVersion: v1
kind: Service
metadata:
name: postgres-exporter-service
spec:
ports:
- port: 9187
targetPort: 9187
selector:
app: postgres-exporter
Apply the YAML configuration:
kubectl apply -f postgres-exporter-deployment.yaml
Step 2: Configure Prometheus
Add the Postgres Exporter endpoint to Prometheus:
scrape_configs:
- job_name: 'postgres-exporter'
static_configs:
- targets: ['<exporter-host>:9187']
Note: Restart Prometheus after updating the configuration.
Step 3: Access Metrics
Navigate to the Postgres Exporter metrics endpoint:
http://:9187/metrics
Note: Prometheus will now scrape these metrics, making them available for dashboards and alerts.
Step 4: Visualize Metrics with Grafana
Integrate Grafana with Prometheus to create dashboards for PostgreSQL metrics. You can use predefined templates like PostgreSQL Overview or customize your visualizations.
Additional Tips:
All PostgreSQL Questions, Answers, and Code Snippets Collection.
RetroSearch is an open source project built by @garambo | Open a GitHub Issue
Search and Browse the WWW like it's 1997 | Search results from DuckDuckGo
HTML:
3.2
| Encoding:
UTF-8
| Version:
0.7.4