以下是在CentOS鏡像上安裝數據庫服務的步驟，以MySQL和PostgreSQL為例：
sudo yum update -ysudo wget https://dev.mysql.com/get/mysql80-community-release-el7-3.noarch.rpm，然后sudo rpm -ivh mysql80-community-release-el7-3.noarch.rpmsudo yum install mysql-community-server -ysudo systemctl start mysqld，sudo systemctl enable mysqldsudo mysql_secure_installationsudo yum update -ysudo yum install -y https://download.postgresql.org/pub/repos/yum/reporpms/EL-7-x86_64/pgdg-redhat-repo-latest.noarch.rpmsudo yum install -y postgresql-server postgresql-contribsudo /usr/pgsql-版本號/bin/postgresql-setup initdbsudo systemctl start postgresql，sudo systemctl enable postgresql
