OpenLDAP : Configure LDAP Server2022/11/23 |
Configure LDAP Server in order to share users' accounts in your local networks.
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[1] | Install OpenLDAP. |
[root@dlp ~]#
[root@dlp ~]# dnf -y install openldap-servers openldap-clients systemctl enable --now slapd |
[2] | Set OpenLDAP admin password. |
# generate encrypted password [root@dlp ~]# slappasswd New password: Re-enter new password: {SSHA}xxxxxxxxxxxxxxxxxxxxxxxx
[root@dlp ~]#
vi chrootpw.ldif # specify the password generated above for [olcRootPW] section dn: olcDatabase={0}config,cn=config changetype: modify add: olcRootPW olcRootPW: {SSHA}xxxxxxxxxxxxxxxxxxxxxxxx ldapadd -Y EXTERNAL -H ldapi:/// -f chrootpw.ldif SASL/EXTERNAL authentication started SASL username: gidNumber=0+uidNumber=0,cn=peercred,cn=external,cn=auth SASL SSF: 0 modifying entry "olcDatabase={0}config,cn=config" |
[3] | Import basic Schemas. |
[root@dlp ~]# ldapadd -Y EXTERNAL -H ldapi:/// -f /etc/openldap/schema/cosine.ldif SASL/EXTERNAL authentication started SASL username: gidNumber=0+uidNumber=0,cn=peercred,cn=external,cn=auth SASL SSF: 0 adding new entry "cn=cosine,cn=schema,cn=config"[root@dlp ~]# ldapadd -Y EXTERNAL -H ldapi:/// -f /etc/openldap/schema/nis.ldif SASL/EXTERNAL authentication started SASL username: gidNumber=0+uidNumber=0,cn=peercred,cn=external,cn=auth SASL SSF: 0 adding new entry "cn=nis,cn=schema,cn=config"[root@dlp ~]# ldapadd -Y EXTERNAL -H ldapi:/// -f /etc/openldap/schema/inetorgperson.ldif SASL/EXTERNAL authentication started SASL username: gidNumber=0+uidNumber=0,cn=peercred,cn=external,cn=auth SASL SSF: 0 adding new entry "cn=inetorgperson,cn=schema,cn=config" |
[4] | Set your domain name on LDAP DB. |
# generate directory manager's password [root@dlp ~]# slappasswd New password: Re-enter new password: {SSHA}xxxxxxxxxxxxxxxxxxxxxxxx
[root@dlp ~]#
vi chdomain.ldif # replace to your own domain name for [dc=***,dc=***] section # specify the password generated above for [olcRootPW] section dn: olcDatabase={1}monitor,cn=config changetype: modify replace: olcAccess olcAccess: {0}to * by dn.base="gidNumber=0+uidNumber=0,cn=peercred,cn=external,cn=auth" read by dn.base="cn=Manager,dc=srv,dc=world" read by * none dn: olcDatabase={2}mdb,cn=config changetype: modify replace: olcSuffix olcSuffix: dc=srv,dc=world dn: olcDatabase={2}mdb,cn=config changetype: modify replace: olcRootDN olcRootDN: cn=Manager,dc=srv,dc=world dn: olcDatabase={2}mdb,cn=config changetype: modify add: olcRootPW olcRootPW: {SSHA}xxxxxxxxxxxxxxxxxxxxxxxx dn: olcDatabase={2}mdb,cn=config changetype: modify add: olcAccess olcAccess: {0}to attrs=userPassword,shadowLastChange by dn="cn=Manager,dc=srv,dc=world" write by anonymous auth by self write by * none olcAccess: {1}to dn.base="" by * read olcAccess: {2}to * by dn="cn=Manager,dc=srv,dc=world" write by * read ldapmodify -Y EXTERNAL -H ldapi:/// -f chdomain.ldif SASL/EXTERNAL authentication started SASL username: gidNumber=0+uidNumber=0,cn=peercred,cn=external,cn=auth SASL SSF: 0 modifying entry "olcDatabase={1}monitor,cn=config" modifying entry "olcDatabase={2}mdb,cn=config" modifying entry "olcDatabase={2}mdb,cn=config" modifying entry "olcDatabase={2}mdb,cn=config" modifying entry "olcDatabase={2}mdb,cn=config"
[root@dlp ~]#
vi basedomain.ldif # replace to your own domain name for [dc=***,dc=***] section dn: dc=srv,dc=world objectClass: top objectClass: dcObject objectclass: organization o: Server World dc: srv dn: cn=Manager,dc=srv,dc=world objectClass: organizationalRole cn: Manager description: Directory Manager dn: ou=People,dc=srv,dc=world objectClass: organizationalUnit ou: People dn: ou=Group,dc=srv,dc=world objectClass: organizationalUnit ou: Group ldapadd -x -D cn=Manager,dc=srv,dc=world -W -f basedomain.ldif Enter LDAP Password: # directory manager's password adding new entry "dc=srv,dc=world" adding new entry "cn=Manager,dc=srv,dc=world" adding new entry "ou=People,dc=srv,dc=world" adding new entry "ou=Group,dc=srv,dc=world" |
[5] |
Configure SSL/TLS Setting.
On this example, it uses self-signed certificates like here. |
[6] | Configure Slapd for SSL/TLS. |
[root@dlp ~]#
cp /etc/pki/tls/certs/{server.key,server.crt} /etc/openldap/certs/ [root@dlp ~]# chown ldap:ldap /etc/openldap/certs/{server.key,server.crt}
[root@dlp ~]#
vi mod_ssl.ldif # create new dn: cn=config changetype: modify replace: olcTLSCertificateFile olcTLSCertificateFile: /etc/openldap/certs/server.crt - replace: olcTLSCertificateKeyFile olcTLSCertificateKeyFile: /etc/openldap/certs/server.key ldapmodify -Y EXTERNAL -H ldapi:/// -f mod_ssl.ldif SASL/EXTERNAL authentication started SASL username: gidNumber=0+uidNumber=0,cn=peercred,cn=external,cn=auth SASL SSF: 0 modifying entry "cn=config"[root@dlp ~]# systemctl restart slapd |
[7] | If Firewalld is running, allow LDAP service. |
[root@dlp ~]# firewall-cmd --add-service={ldap,ldaps} success [root@dlp ~]# firewall-cmd --runtime-to-permanent success |
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