How to view GitLab logs under CentOS

A complete guide to viewing GitLab logs under CentOS system

This article will guide you how to view various logs of GitLab in CentOS system, including main logs, exception logs, and other related logs. Please note that the log file path may vary depending on the GitLab version and installation method. If the following path does not exist, please check the GitLab installation directory and configuration files.

1. Check GitLab main log

Use the following command to view the main log file of the GitLab Rails application:

• Command: sudo cat /var/log/gitlab/gitlab-rails/production.log

This command displays the entire contents of the production.log file, which is located in the main log directory of the GitLab Rails application.

2. Check GitLab exception log

To view JSON format exception information for GitLab Rails application, use the following command:

• Command: sudo cat /var/log/gitlab/gitlab-rails/production_json.log

This log file helps quickly locate and diagnose system problems.

3. Check other important logs

In addition to the above main logs, the following log files may also contain important information:

• GitLab Shell log: Located in the /var/log/gitlab/gitlab-shell/ directory, it records the execution of GitLab shell commands and the addition of project SSH permissions.
• Unicorn log: Located in /var/log/gitlab/unicorn/ directory, it records the relevant information of the GitLab Web server.
• Repocheck log: located in /var/log/prometheus/ directory (note: this path may vary depending on the installation method).

4. Use journalctl to view system logs

You can use the journalctl command to view the system logs related to GitLab. For example, check the logs of the GitLab service:

• Command: journalctl -u gitlab

This command will display all system log information related to the GitLab service.

Through the above methods, you can comprehensively monitor the running status of GitLab, and promptly discover and resolve potential problems. It is recommended to check these log files regularly to ensure stable operation of GitLab.

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