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pg-graylogger

Service for exporting postgresql csvlog to graylog server. Additionally, it supports depersonalization (removing exact values from statements) and extracting duration of statement as separate field, binding it to previous statement in a session.

Preparation

First you need to enable logging in CSV format in Postgresql. To do that, open /etc/postgresql/14/main/postgresql.conf and add or change lines

log_destination = "csvlog"
loggin_collector = on

Installation

Deploy with Docker

You just need to bind mount directory where postgresql write logs with CSV format from host to /var/log/postgresql inside container and set -graylog-address so it knows where to send logs.

docker run -v "/var/log/postgresql:/var/log/postgresql" pg_graylogger:latest -graylog-address graylog.local:2345 -depers -facility develop

Usage

Usage of ./pg_graylogger:
  -cache-size int
    	ReadAhead buffer cache size (default 10)
  -compressioin-type string
    	Compression type (gzip, zlib or none) (default "gzip")
  -compression-level int
    	Compression level for gelf packets (default 5)
  -depers
    	Depersonalize. Replace sensible information (field values) from query texts
  -facility string
    	Facility field for log messages
  -gelf-streams int
    	Number of UDP GELF forming streams (default 1)
  -graylog-address string
    	Address of graylog in form of server:port (default "localhost:2345")
  -log-dir string
    	Path to postgresql log file in csv format (default "/var/log/postgresql")
  -processing-threads int
    	Number of record-processing threads (default 1)
  -version
    	Show version