PgWatch2

Today, Pgwatch2 is a recognized open‑source solution for PostgreSQL monitoring and related environments. Developed to provide fine‑grained visibility into database performance, this tool meets the needs of system administrators and DevOps teams who want to monitor, analyse, and optimise their PostgreSQL instances.

In this review we examine in detail its features, use‑cases, installation process, and its positioning against existing alternatives. Thanks to an active open‑source community, Pgwatch2 benefits from continuous improvements and a constant sharing of best practices.

What problems does Pgwatch2 solve?

Monitoring PostgreSQL databases raises several challenges:

• Commercial solutions are often expensive
• Native PostgreSQL tools are limited in visualisation
• Performance diagnostics require detailed metrics

Pgwatch2 provides a robust open‑source answer by enabling:

• Advanced collection of PostgreSQL metrics
• Integration with Grafana for visualisation
• Centralised multi‑instance supervision

Thus it is a credible alternative to proprietary tools such as Datadog or New Relic.
Moreover, the involvement of the open‑source community quickly enriches functionality and fixes identified limitations.

Key features and capabilities

Interface

• Grafana‑based UI
• Rich, customisable dashboards
• Clear real‑time metric visualisation

Performance

• Optimised metric collection via SQL queries
• Minimal impact on monitored databases
• Support for distributed environments

Customisation

• Flexible configuration through YAML files
• Ability to add custom metrics
• Support for PostgreSQL extensions

Security

• Secure connections to PostgreSQL databases
• Access management via roles

• Compatible with secured and isolated environments

   

How to install and configure?

Installation of Pgwatch2 relies on several components, notably PostgreSQL, Grafana, and a metric collector.

1. Download the latest release from the official GitHub repository.
2. Install required dependencies, PostgreSQL, Python or Docker, depending on the chosen mode.
3. Configure the databases to be monitored in the configuration file.
4. Deploy Grafana and import the provided dashboards.
5. Start the Pgwatch2 collector.

The Docker installation method is recommended to simplify deployment, as described in the official documentation. If difficulties arise, you can rely on technical support available through forums, GitHub issues, or active project contributors.

Use‑cases for Pgwatch2

Pgwatch2 is employed in various professional contexts:

• Monitoring critical PostgreSQL infrastructures
• Performance analysis for high‑load applications
• Auditing and optimisation of SQL queries
• Multi‑cloud or hybrid supervision

Concrete examples:

• A SaaS company can use Pgwatch2 to detect slow queries and optimise application performance.
• A DevOps team can monitor several PostgreSQL clusters from a single Grafana interface.

In these scenarios, the open‑source community plays a key role by sharing dashboards and configurations tailored to different use‑cases.

Comparison with alternatives

Advantages and disadvantages

Conclusion

Pgwatch2 primarily targets PostgreSQL administrators, DevOps teams, and system engineers seeking a powerful, flexible open‑source monitoring solution.

It stands out for its PostgreSQL specialization, high customisability, and seamless Grafana integration. Backed by a dynamic open‑source community and accessible technical support through collaborative channels, it offers a serious alternative to commercial products.

For organisations aiming to reduce costs while maintaining high visibility over their databases, Pgwatch2 is a solid, proven choice.