postgres_exporter

• prometheus-community/postgres_exporter
• https://grafana.com/grafana/dashboards/12273
• https://github.com/lstn/misc-grafana-dashboards
• https://github.com/percona/grafana-dashboards/blob/master/dashboards/PostgreSQL_Overview.json
• 指标
  • postgres_exporter.go#L211
    • 内建指标
  • queries.yaml
    • 自定义指标
    • pg_stat_statements 的 querid 为 label - 会产生比较多指标，如果不需要可以考虑 groupby
• pg_stat_statements
  • 语句情况统计
• Statistics Collector