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Table of Contents
Database Selection Guide
Installation and configuration
Using PostgreSQL
Using MySQL/MariaDB
Important Tips
Home Operation and Maintenance CentOS How to choose a GitLab database in CentOS

How to choose a GitLab database in CentOS

Apr 14, 2025 pm 05:39 PM
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When installing and configuring GitLab on a CentOS system, the choice of database is crucial. GitLab is compatible with multiple databases, but PostgreSQL and MySQL (or MariaDB) are most commonly used. This article analyzes database selection factors and provides detailed installation and configuration steps.

Database Selection Guide

The following factors need to be considered when choosing a database:

  • PostgreSQL: GitLab's default database is powerful, has high scalability, supports complex queries and transaction processing, and is suitable for large application scenarios.
  • MySQL/MariaDB: a popular relational database widely used in Web applications, with stable and reliable performance.
  • MongoDB: NoSQL database, good at handling massive unstructured data, excellent performance and scalability.
  • Redis: In-memory database, used to store and quickly retrieve key-value pairs, often used for cache and message queues.

Installation and configuration

Using PostgreSQL

  1. Install PostgreSQL:
 sudo yum install -y postgresql-server
sudo postgresql-setup initdb
sudo systemctl enable postgresql
sudo systemctl start postgresql
  1. GitLab PostgreSQL configuration: Modify /etc/gitlab/gitlab.rb file, set gitlab_rails['db_host'] to localhost , and configure gitlab_rails['db_user'] and gitlab_rails['db_password'] as PostgreSQL username and password.
  2. Reconfigure and restart GitLab:
 gitlab-ctl reconfigure
gitlab-ctl restart

Using MySQL/MariaDB

  1. Install MySQL/MariaDB:
 sudo yum install -y mysql-server
sudo systemctl start mysqld
sudo systemctl enable mysqld
  1. MySQL/MariaDB security configuration: execute the sudo mysql_secure_installation command to set the root password and enhance security.
  2. GitLab MySQL/MariaDB configuration: Modify /etc/gitlab/gitlab.rb file, set gitlab_rails['db_host'] to localhost , and configure gitlab_rails['db_user'] and gitlab_rails['db_password'] as the username and password of MySQL/MariaDB.
  3. Reconfigure and restart GitLab:
 gitlab-ctl reconfigure
gitlab-ctl restart

Important Tips

  • Make sure the database server has enough CPU, memory and storage space to meet GitLab's operational needs.
  • Select the appropriate database according to the actual data type and application scenario. For example, MongoDB is a better choice when dealing with large amounts of unstructured data.
  • During the database configuration process, be sure to set a strong password and take necessary security measures to restrict access rights.

Follow the above steps to easily select and configure GitLab's database on your CentOS system.

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