To bulk add users in LDAP to simulate a production environment.

bulkaddusers.sh

USERNAME="dummyuserldap"
DIRSRV="127.0.0.1"
PORT="10389"
ROOTDN="uid=admin,ou=system"
PASSWD="secret"
LDIF="/home/vagrant/ldif-gen/bulkuser.ldif"


for i in $(seq 20000 40000); do
        echo "dn: uid=$USERNAME$i,ou=users,dc=example,dc=com" > $LDIF
        echo "cn: Bulk User$i" >> $LDIF
        echo "uid: $USERNAME$i" >> $LDIF
        echo "objectClass: top" >> $LDIF
        echo "objectClass: person" >> $LDIF
        echo "objectClass: inetOrgPerson" >> $LDIF
        echo "objectClass: organizationalPerson" >> $LDIF
        echo "sn: $USERNAME$i" >> $LDIF
        echo "userPassword: $PASSWD$i" >> $LDIF
        echo -e "\n" >> $LDIF

        /usr/bin/ldapmodify -x -h $DIRSRV -p $PORT -D "$ROOTDN" -w $PASSWD -a -f $LDIF

done

#EOF