Configuration of some services in Linux

For more information about the configurations of some services in Linux-Linux Enterprise applications-Linux server applications, see the following. CentOS5.1 is installed on the server, some services need to be configured, and some problems encountered are recorded.

Vsftpd:
When a local user logs on, the error "500 OOPS: cannot change directory:" is returned. The reason is that SELinux is working and needs to be turned off. Execute #/usr/sbin/setsebool-P ftpd_disable_trans 1;

If you want to restrict local users to log on only in their home directories, set chroot_local_user = YES. However, this poses a security risk according to the vsftp FAQ. In this case, you can open chroot_list_enable = YES and specify the user list file chroot_list_file =/etc/vsftpd/chroot_list, in the/etc/vsftpd/chroot file, list the user names that do not want to be restricted in the main directory. You can also set chroot_local_user to the default NO and set chroot_list_enable = YES and chroot_list_file to list the usernames that need to be restricted to the main directory in the/etc/vsftpd/chroot file.

Mysql:
By default, the password of the root user of the mysql administrator is a blank password. Use "mysqladmin password new password" to set a new password.