How can I install Dropbox?
As of October 15, 2018, Dropbox has updated their Linux system requirements to require an ext4 filesystem as well as glibc 2.19 or higher. This effectively ends support for CentOS 7, which uses the xfs filesystem and is distributed with glibc 2.17.
One possible alternative is to use rclone to sync folders between the local filesystem and Dropbox. Unlike the Dropbox app, rclone isn't a daemon that syncs file changes automatically. Instead, you would have to run rclone periodically as a cronjob. For more information, please see our rclone setup instructions.