在CentOS上安装GitLab时，可以选择使用MySQL或PostgreSQL作为数据库。以下是相关介绍：
计算
安全
数据库
网络和加速
企业服务
sudo yum install -y mysql-server mariadb
sudo systemctl start mysqld
sudo systemctl enable mysqld
sudo mysql_secure_installation
/etc/gitlab/gitlab.rb 文件，设置MySQL的连接信息：gitlab_rails['db_host'] = "localhost"
gitlab_rails['db_port'] = 3306
gitlab_rails['db_user'] = "gitlab"
gitlab_rails['db_password'] = "your_mysql_password"
gitlab_rails['db_name'] = "gitlabhq_production"
sudo gitlab-ctl reconfigure
sudo gitlab-ctl restart
sudo yum install -y postgresql-server
sudo systemctl start postgresql
sudo systemctl enable postgresql
sudo -u postgres psql
CREATE DATABASE gitlabhq_production;
CREATE USER gitlab WITH PASSWORD 'your_postgresql_password';
ALTER ROLE gitlab SET client_encoding TO 'utf8';
ALTER ROLE gitlab SET default_transaction_isolation TO 'read committed';
ALTER ROLE gitlab SET timezone TO 'UTC';
GRANT ALL PRIVILEGES ON DATABASE gitlabhq_production TO gitlab;
\q
/etc/gitlab/gitlab.rb 文件，设置PostgreSQL的连接信息：gitlab_rails['db_host'] = "localhost"
gitlab_rails['db_port'] = 5432
gitlab_rails['db_user'] = "gitlab"
gitlab_rails['db_password'] = "your_postgresql_password"
gitlab_rails['db_name'] = "gitlabhq_production"
sudo gitlab-ctl reconfigure
sudo gitlab-ctl restart
以上是在CentOS上为GitLab选择MySQL或PostgreSQL数据库的方法，具体选择哪种数据库可以根据个人或组织的需求和偏好来决定。
亿速云「云数据库 MySQL」免部署即开即用，比自行安装部署数据库高出1倍以上的性能，双节点冗余防止单节点故障，数据自动定期备份随时恢复。点击查看>>
推荐阅读：CentOS中GitLab数据库选择
