This section provides information on the various components of the Apache Hadoop ecosystem.
In many data centers, the following deployment strategy may be optimal:
Use a mirror for the HDP Repositories. The HDP Repositories are small and easily mirrored, thereby allowing secure control over the contents of the Hadoop packages accepted for use in your data center.
![[Note]](../common/images/admon/note.png)
Note The installer pulls many packages from the base OS repositories (repos). If you do not have a complete base OS available to all your machines at the time of installation, you may run into issues. If you encounter problems with base OS repos being unavailable, please contact your system administrator to arrange for these additional repos to be proxied or mirrored.
