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PostgreSQL monitoring method under Debian

Apr 02, 2025 am 07:27 AM
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PostgreSQL monitoring method under Debian

This article introduces a variety of methods and tools to monitor PostgreSQL databases under the Debian system, helping you to fully grasp database performance monitoring.

1. Use PostgreSQL built-in monitoring view

PostgreSQL itself provides multiple views for monitoring database activity:

  • pg_stat_activity : Displays database activities in real time, including connections, queries, transactions and other information.
  • pg_stat_replication : Monitors replication status, especially suitable for stream replication clusters.
  • pg_stat_database : Provides database statistics, such as database size, transaction commit/rollback times and other key indicators.

2. With the help of log analysis tools

pgBadger is an excellent open source PostgreSQL log analysis tool. It can generate detailed HTML reports, covering important data such as query statistics, execution time, error logs and slow queries, helping you quickly locate performance bottlenecks.

3. Application of third-party monitoring tools

You can choose a variety of third-party monitoring tools to build a powerful monitoring system:

  • Prometheus & Grafana: Prometheus is an open source monitoring system, and cooperates with Grafana's visualization capabilities to provide powerful monitoring and alarm functions.
  • Zabbix: Enterprise-level monitoring solution, which enables comprehensive monitoring of PostgreSQL performance by installing Zabbix Agent.
  • Nagios: a widely used monitoring tool that supports multiple monitoring and alarm mechanisms.

4. BPFtrace Fine Vacuum Monitoring

Using BPFtrace to write a simple program that accurately tracks the execution of VACUUM calls in PostgreSQL and measures and prints execution time, thereby optimizing database maintenance strategies.

5. The monitoring function of pgAdmin

As a commonly used open source management tool, pgAdmin provides a graphical interface to facilitate database management and includes a monitoring dashboard to intuitively display database performance.

6. Performance optimization suggestions

To maintain optimal performance of the database, please be sure to pay attention to the following points:

  • Execute VACUUM and ANALYZE commands regularly to clean up useless data and update statistics.
  • Adjust PostgreSQL configuration parameters according to actual needs, such as shared_buffers , work_mem , and effective_cache_size .
  • Create indexes for commonly used query fields to improve query efficiency.
  • Upgrade storage devices to SSDs, increase memory and CPU resources, and optimize hardware configuration.

Through the above methods and tools, you can effectively monitor the performance of PostgreSQL database under the Debian system and take timely optimization measures to ensure the stable operation of the database.

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