Difference between revisions of "OpenLDAP"
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# Map the kerberos principals to actual ldap entities. | # Map the kerberos principals to actual ldap entities. | ||
#authz-policy from | #authz-policy from | ||
| − | #authz-regexp "^uid=([^,]+),cn='''''<realm>''''',cn=gssapi,cn=auth" "uid=$1,ou=people,'''''<BASE DN>'''''" | + | #authz-regexp |
| + | "^uid=([^,]+),cn='''''<realm>''''',cn=gssapi,cn=auth" | ||
| + | "uid=$1,ou=people,'''''<BASE DN>'''''" | ||
# Define SSL and TLS properties (optional) | # Define SSL and TLS properties (optional) | ||
| Line 300: | Line 302: | ||
ldapadd -f entries.ldif -x -D "cn=Manager,'''''<BASEDN>'''''" -W | ldapadd -f entries.ldif -x -D "cn=Manager,'''''<BASEDN>'''''" -W | ||
| + | |||
| + | === ldap.conf === | ||
| + | |||
| + | Create a basic ldap.conf: | ||
| + | |||
| + | cat > /etc/openldap/ldap.conf << "EOF" | ||
| + | # Begin /etc/openldap/ldap.conf | ||
| + | |||
| + | BASE '''''<BASE DN>''''' | ||
| + | URI ldap://'''''<fqdn of ldap server>''''' | ||
| + | |||
| + | #SASL_MECH GSSAPI | ||
| + | #SASL_REALM '''''<REALM>''''' | ||
| + | #SASL_SECPROPS none | ||
| + | |||
| + | # End /etc/openldap/ldap.conf | ||
| + | EOF | ||
=== Where to go from here? === | === Where to go from here? === | ||
Latest revision as of 16:24, 22 March 2009
| Download Source: | ftp://ftp.openldap.org/pub/OpenLDAP/openldap-release/openldap-2.4.19.tgz |
|---|
Contents
Introduction to OpenLDAP
The OpenLDAP package provides an open source implementation of the Lightweight Directory Access Protocol.
Project Homepage: http://www.openldap.org/
Note
This page contains instructions to compile a OpenLDAP Server, Most of the time it is only the client libraries that are required, you can find this information on the OpenLDAP-Client page.
Dependencies
Required
- Berkeley DB or GDBM
Recommended
Optional
Configuration Information
If you really want to build OpenLDAP with GNU Database Manager instead of Berkeley DB, add the following flags to configure script:
--disable-bdb --disable-hdb --with-ldbm-api=gdbm
Non-Multilib
Compile the package:
sed -i 's@\(^STRIP = \).*@\1 @' build/top.mk &&
CPPFLAGS="-D_GNU_SOURCE" ./configure --prefix=/usr --sysconfdir=/etc \
--libexecdir=/usr/lib/openldap --localstatedir=/srv/ldap --disable-debug \
--enable-dynamic --enable-crypt --enable-modules --enable-wrappers \
--enable-bdb=mod --enable-hdb=mod --enable-ldap=mod \
--enable-monitor=mod --enable-perl=mod --enable-relay=mod \
--enable-dyngroup=mod --enable-dynlist=mod --enable-memberof=mod \
--enable-ppolicy=mod --enable-valsort=mod &&
make depend &&
make
Install the package
make install &&
ln -sv ../lib/openldap/slapd /usr/sbin/slapd &&
install -dv -m755 /usr/share/doc/openldap-2.4.19/{drafts,guide,rfc} &&
install -v -m644 doc/drafts/* /usr/share/doc/openldap-2.4.19/drafts &&
install -v -m644 doc/rfc/* /usr/share/doc/openldap-2.4.19/rfc &&
cp -Rv doc/guide/* /usr/share/doc/openldap-2.4.19/guide
Multilib
32Bit
Compile the package:
sed -i 's@\(^STRIP = \).*@\1 @' build/top.mk &&
CC="gcc ${BUILD32}" CPPFLAGS="-D_GNU_SOURCE" ./configure --prefix=/usr --sysconfdir=/etc \
--libexecdir=/usr/lib/openldap --localstatedir=/srv/ldap --disable-debug \
--enable-dynamic --enable-crypt --enable-modules --enable-wrappers \
--enable-bdb=mod --enable-hdb=mod --enable-ldap=mod \
--enable-monitor=mod --enable-perl=mod --enable-relay=mod \
--enable-dyngroup=mod --enable-dynlist=mod --enable-memberof=mod \
--enable-ppolicy=mod --enable-valsort=mod &&
make depend &&
make
Install the package
make install
N32
Compile the package:
sed -i 's@\(^STRIP = \).*@\1 @' build/top.mk &&
CC="gcc ${BUILDN32}" CPPFLAGS="-D_GNU_SOURCE" ./configure --prefix=/usr --sysconfdir=/etc \
--libexecdir=/usr/lib/openldap --localstatedir=/srv/ldap --disable-debug \
--enable-dynamic --enable-crypt --enable-modules --enable-wrappers \
--enable-bdb=mod --enable-hdb=mod --enable-ldap=mod \
--enable-monitor=mod --enable-perl=mod --enable-relay=mod \
--enable-dyngroup=mod --enable-dynlist=mod --enable-memberof=mod \
--enable-ppolicy=mod --enable-valsort=mod &&
make depend &&
make
Install the package
make install
64Bit
Compile the package:
sed -i 's@\(^STRIP = \).*@\1 @' build/top.mk &&
CC="gcc ${BUILD64}" CPPFLAGS="-D_GNU_SOURCE" ./configure --prefix=/usr \
--sysconfdir=/etc --libdir=/usr/lib64 --libexecdir=/usr/lib/openldap \
--localstatedir=/srv/ldap --disable-debug \
--enable-dynamic --enable-crypt --enable-modules --enable-wrappers \
--enable-bdb=mod --enable-hdb=mod --enable-ldap=mod \
--enable-monitor=mod --enable-perl=mod --enable-relay=mod \
--enable-dyngroup=mod --enable-dynlist=mod --enable-memberof=mod \
--enable-ppolicy=mod --enable-valsort=mod &&
make depend &&
make
Install the package
make install &&
ln -sv ../lib/openldap/slapd /usr/sbin/slapd &&
install -dv -m755 /usr/share/doc/openldap-2.4.19/{drafts,guide,rfc} &&
install -v -m644 doc/drafts/* /usr/share/doc/openldap-2.4.19/drafts &&
install -v -m644 doc/rfc/* /usr/share/doc/openldap-2.4.19/rfc &&
cp -Rv doc/guide/* /usr/share/doc/openldap-2.4.19/guide
Configuring
The information in the sections below are based off information from the following pages:
http://www.bayour.com/LDAPv3-HOWTO.html http://aput.net/~jheiss/krbldap/
Additional Steps with Kerberos
If you plan on using LDAP with Kerberos you will need to create the LDAP Service Principle in the Kerberos database. You will also want to create a keytab for LDAP and LDAP alone.
kadmin.local -q "addprinc -randkey ldap/<fqdn of ldap server>@<REALMNAME.COM>" && kadmin.local -q "ktadd -k /etc/openldap/slapd.keytab ldap/<fqdn of ldap server>@<REALMNAME.COM>" && chmod 600 /etc/openldap/slapd.keytab
You will also need to add the LDAP Service Principle to the system keytab aswell:
kadmin.local -q "ktadd -k /etc/krb5.keytab ldap/<fqdn of ldap server>@<REALMNAME.COM>" && chmod 600 /etc/krb5.keytab
The slapd binary in /usr/sbin should be a symlink. Remove it and put a wrapper script that will point ldap at the proper keytab in its place:
rm /usr/sbin/slapd && cat > /usr/sbin/slapd << "EOF" #!/bin/sh # Kerberos Wrapper Script for Slapd if [ -f /etc/openldap/ldap.keytab ]; then env KRB5_KTNAME=/etc/openldap/slapd.keytab /usr/lib/openldap/slapd "$@" else /usr/lib/openldap/slapd "$@" fi EOF
chmod +x /usr/sbin/slapd
You also will want to create a user specifically for managing the ldap directory:
kadmin.local -q "addprinc ldapadm@<REALMNAME.COM>"
slapd.conf
If you download the following schema files to the ldap schema directory you can remove the comments on the corresponding lines:
http://cross-lfs.org/~jciccone/ldap-schemas/krb5-kdc.schema http://cross-lfs.org/~jciccone/ldap-schemas/sudo.schema
Creating a basic slapd configuration file:
cat > /etc/openldap/slapd.conf << "EOF"
# Begin /etc/openldap/slapd.conf
# Schema Definitions
include /etc/openldap/schema/core.schema
include /etc/openldap/schema/cosine.schema
include /etc/openldap/schema/inetorgperson.schema
include /etc/openldap/schema/nis.schema
#include /etc/openldap/schema/sudo.schema
include /etc/openldap/schema/misc.schema
#include /etc/openldap/schema/krb5-kdc.schema
# The location of the PID file
pidfile /srv/ldap/run/slapd.pid
# List of arguments that will be passed to the server
argsfile /srv/ldap/run/slapd.args
# Load dynamic backend modules:
modulepath /usr/lib/openldap/openldap
moduleload back_bdb.la
#moduleload back_ldap.la
#moduleload back_ldbm.la
#moduleload back_passwd.la
#moduleload back_shell.la
# Use crypt to hash the passwords
password-hash {crypt}
# If you wish to use cyrus-sasl to bind to
# Kerberos uncomment and configure the
# following lines
#sasl-realm <REALMNAME.COM>
#sasl-host <FQDN OF SASL SERVER>
#sasl-secprops none
# Map the kerberos principals to actual ldap entities.
#authz-policy from
#authz-regexp
"^uid=([^,]+),cn=<realm>,cn=gssapi,cn=auth"
"uid=$1,ou=people,<BASE DN>"
# Define SSL and TLS properties (optional)
#TLSCertificateFile /etc/ssl/ldap.pem
#TLSCertificateKeyFile /etc/openldap/ldap-key.pem
#TLSCACertificateFile /etc/ssl/ldap.pem
#######################################################################
# Access Lists
#######################################################################
access to attrs=userPassword
by dn="cn=Manager,<BASE DN>" write
# by dn="uid=ldapadm,ou=people,<BASE DN>" write
by dn="uid=root,ou=people,<BASE DN>" write
by self write
by anonymous auth
by * none
access to attrs=gecos,description,loginShell
by self write
access to *
by dn="cn=Manager,<BASE DN>" write
# by dn="uid=ldapadm,ou=people,<BASE DN>" write
by dn="uid=root,ou=people,<BASE DN>" write
by * read
by * search
#######################################################################
# BDB database definitions
#######################################################################
database bdb
suffix "<BASEDN>"
# By Default the rootdn always has complete access to the entire ldap directory regardless of ACLs
# It is for this reason that after the database is populated, you disable the rootdn by either
# removing or commenting out the following 2 lines.
rootdn "cn=Manager,<BASEDN>"
rootpw <password hash>
directory "/srv/ldap/openldap-data"
# Indexes
index default pres,eq
index objectClass,uid,uidnumber,gidnumber,cn
index mail eq
# End /etc/openldap/slapd.conf
EOF
When creating the configuration file above replace <BASEDN> with your Base DN. eg. dc=cross-lfs,dc=org.
You can generate a password hash for the rootdn with the following command:
slappasswd -h {SHA}
Bootscript
Install the init script included in the bootscripts package.
make install-openldap1
Note
The bootscript openldap1 only starts slapd. openldap2 starts slapd and slurpd.
Populating the Directory
Before continuing with the following, start the ldap service:
/etc/rc.d/init.d/openldap start
Creating an initial LDIF:
cat > entries.ldif << "EOF" # Organization for Example Corporation dn: <BASEDN> objectClass: dcObject objectClass: organization dc: example o: Example Corporation description: The Example Corperation # Organizational Role for Directory Manager dn: cn=Manager,<BASEDN> objectClass: organizationalRole cn: Manager description: Directory Manager EOF
Adding the entries into the LDAP directory:
ldapadd -f entries.ldif -x -D "cn=Manager,<BASEDN>" -W
ldap.conf
Create a basic ldap.conf:
cat > /etc/openldap/ldap.conf << "EOF" # Begin /etc/openldap/ldap.conf BASE <BASE DN> URI ldap://<fqdn of ldap server> #SASL_MECH GSSAPI #SASL_REALM <REALM> #SASL_SECPROPS none # End /etc/openldap/ldap.conf EOF
Where to go from here?
Configuring clients to authenticate against LDAP, and possibly Kerberos
The nss_ldap page contains information on creating some base OUs (Organizational Units) and starting to create your users and groups.
