postgres-connection-exporter/README.md
Kumi 776c98fb47
feat: Enhance config flexibility and setup
Introduced command-line flags for improved configuration management, including the creation of a default config file, and specified listening address override capabilities. This update facilitates easier and more flexible setup and deployment processes for the PostgreSQL connection exporter. The `.gitignore` and documentation were updated to align with these changes, reflecting the new command-line options and the removal of the `config.dist.yaml` in favor of creating a default configuration through the tool itself.

- Command-line flags `--create-config`, `--config`, `--host`, and `--port` added to streamline customization.
- Configuration now supports naming database hosts for clearer metrics identification.
- Documentation revised to guide through the new configuration and setup process.
- Changelog introduced to track project evolution.

These enhancements aim to make the exporter more adaptable to various deployment environments and to simplify the initial setup for users.
2024-05-16 06:33:21 +02:00

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Markdown

# PostgreSQL Connection Exporter for Prometheus
This is a simple server that exports PostgreSQL connection metrics in a format that can be scraped by Prometheus.
It outputs the following metrics:
- The number of connections per database
- The number of connections per user
- The number of connections per client address
- The number of connections per state
## Installation
You can install the exporter from PyPI. Within a virtual environment, run:
```bash
pip install postgres-connection-exporter
```
## Configuration
The exporter is configured using a `config.yaml`. You can create a default configuration file in the current working directory with:
```bash
postgres-connection-exporter --create-config
```
Now, edit the `config.yaml` file to match your PostgreSQL connection settings. Here is an example configuration:
```yaml
hosts:
host: localhost
port: 5432
user: postgres
password: postgres
```
The user must have the `pg_monitor` role to access the `pg_stat_activity` view.
## Usage
After you have created your `config.yaml`, you can start the exporter with:
```bash
postgres-connection-exporter
```
By default, the exporter listens on `localhost:8989`. You can change the address in the `config.yaml` file, or using the `--host` and `--port` flags:
```bash
postgres-connection-exporter --host 0.0.0.0 --port 9898
```
You can also specify a different configuration file with the `--config` flag:
```bash
postgres-connection-exporter --config /path/to/config.yaml
```
## License
This project is licensed under the MIT License. See the [LICENSE](LICENSE) file for details.