From Fedora Directory Server

How to Reset the Directory Manager Password

If you forget the directory manager password, it's pretty easy to reset it. You will have to edit the main server config file (dse.ldif). Before you do that, you must shutdown the server. If the server is running and you edit dse.ldif, your changes will be lost.

service dirsrv stop [yourinstance]

or on Fedora DS 1.0.x and earlier

/opt/fedora-ds/slapd-yourinstance/stop-slapd

Next, generate the new password using the pwdhash command.

/usr/bin/pwdhash newpassword

or on Fedora DS 1.0.x and earlier

cd /opt/fedora-ds/bin/slapd/server ; ./pwdhash -D /opt/fedora-ds/slapd-yourinstance newpassword

This will print out the hashed password string using the default directory manager password hashing scheme for your instance (SSHA by default). Then

cd /etc/dirsrv/slapd-yourinstance

or on Fedora DS 1.0.4 and earlier

cd /opt/fedora-ds/slapd-yourinstance/config

Edit dse.ldif (you should have already shutdown the server - see above) - search for nsslapd-rootpw - you will see a line like this:

nsslapd-rootpw: {SSHA}92ls0doP1i0VgQMm8jMjGw27AzVEzyLJS9sj02==

Replace the value with the value printed out by pwdhash and save the file. Then restart the server

service dirsrv start [yourinstance]

or on Fedora DS 1.0.x and earlier

/opt/fedora-ds/slapd-yourinstance/start-slapd
ldapsearch -x -D "cn=directory manager" -w newpassword -s base -b "" "objectclass=*"

to test your new password.