Redhat9 install its own mysql 1. Put the required CD into the system, and put the mysql rpm package in the second CD, and then mount it. Www.2cto.com Java code monut/mnt/cdrom 2. Enter the corresponding RPMS location on the cd Java code cd/mnt/cdrom/RedHat/RPMS 3. Install the required rpm package Java code rpm-ivh perl-CGI-2.81-88.i386.rpm rpm-ivh perl-DBI-1.32-5.i386.rpm rpm-ivh mysql-3.23.54a-11.i386.rpm perl-DBD-MySQL-2.1021-3.i386.rpm rpm-ivh mysql-server-3.23.54a-11.i386.rpm 4. Start the corresponding mysql service, and check the corresponding process. Note: you can start the service in the following two ways: (1) Use service mysqld start // mysqld as the mysql daemon, you can use it to start the corresponding service (2)/etc/init. d/mysqld start // use the script to start the Mysqld service. How can I check whether the corresponding Mysqld service is successfully started? Java code service mysqld status // check the status command? 5. Check the system install Mysql installation directory location and Log File Location Java code cat/etc/my. cnf // location where the RPM package is installed