Chapter 4.Silent Installation and Instance CreationSilent installation allows you to use a file to predefine all the answers that you would normally supplyto the setup program interactively; this provides you with the ability to script the installation of multi-ple instances of Red Hat Directory Server (Directory Server). Instance creation enables you to use anexisting Directory Server instance to create additional instances of the server under the same serverroot.This chapter explains the following:• Section 4.1 Using Silent Installation• Section 4.2 Using Silent Instance Creation.4.1. Using Silent InstallationSilent installation is intended for use at sites where many server instances must be created. For Di-rectory Server, it is especially useful for heavily replicated sites that create a large number of replicaservers.To use silent installation, you create a silent installation file, supply values for the appropriate instal-lation directives, and run the setup program with the -s and -f command-line options.The procedure below explains how to use silent installation:1. Log in as root.2. Create a new directory:mkdir dscd ds3. If you have not already done so, download the product binaries file to the installation directory.4. Unpack the product binaries file using the following command:gunzip -dc filename.tar.gz | tar -xvof-where filename corresponds to the product binaries file that you want to unpack.5. Prepare the file that contains your installation directives.Refer to Section 4.1.2 Preparing Silent Installation Files for instructions and for some examplesof the silent-install files.6. Fill in appropriate values for the installation directives.Refer to Section 4.1.3 Specifying Silent Installation Directives for the complete list of silent in-stallation directives that you can use when installing Directory Server.7. Run the setup program with the -s and -f command-line options:setup -s -f filenamewhere filename is the name of the file that contains your installation directives.