GitLab log management in Debian

Managing GitLab logs in Debian systems usually involves the following key steps and tools:

Log file location

• The main log files of GitLab are usually located in the /var/log/gitlab directory. Specifically, production.log records the main log information of the GitLab Rails application, while production_json.log contains exception information in JSON format.

Log viewing method

• Use the cat command : You can view the contents of the log file through the cat command. For example, you can use sudo cat /var/log/gitlab/gitlab-rails/production.log to view the contents of production.log.
• Use the tail command : In order to view the log content in real time, you can use the tail -f /var/log/gitlab/gitlab-rails/production.log command.

Log Analysis Tool

• Graylog : Graylog is a powerful security information and event management (SIEM) solution that collects, searches, analyzes and alerts log data. It supports the collection of logs from a variety of data sources and provides real-time search and analysis, visual dashboard, alerts and notifications.

Log configuration and management

• Logrotate : GitLab uses Logrotate to manage the cutting, compression and deletion of log files. You can customize the behavior of Logrotate by modifying the parameters in the /etc/gitlab/gitlab.rb file, such as setting the size, retention time, and compression format of the log file.

Things to note

• When viewing and using GitLab logs, relevant security policies should be followed to ensure that sensitive information is not leaked.
• For log management in production environments, it is recommended to use professional SIEM tools such as Graylog to more effectively monitor and analyze log data.

The above are the basic methods and tools for managing GitLab logs in the Debian system.

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