OpenLDAP basic installation for OpenStack

May 14, 2015 10:20 · 292 words · 2 minute read

  • Install openldap

    yum install -y openldap-servers openldap-clients
  • Start the service

    systemctl start slapd
  • Add the cosine and inetorgperson schemas:

    ldapadd -H ldapi:/// -Y EXTERNAL -f /etc/openldap/schema/cosine.ldif
    ldapadd -H ldapi:/// -Y EXTERNAL -f /etc/openldap/schema/inetorgperson.ldif
  • Create a temporary config directory where the files will be placed:

    mkdir -p /root/ldapconf && cd /root/ldapconf
  • Create the memberof overlay file:

    cat >./memberof.ldif<<EOF
    dn: cn={0}module,cn=config
    objectClass: olcModuleList
    cn: {0}module
    olcModulePath: /usr/lib64/openldap
    olcModuleLoad: {0}
    dn: olcOverlay={0}memberof,olcDatabase={2}hdb,cn=config
    objectClass: olcConfig
    objectClass: olcMemberOf
    objectClass: olcOverlayConfig
    objectClass: top
    olcOverlay: {0}memberof
  • Add it:

    ldapadd -H ldapi:/// -Y EXTERNAL -f ./memberof.ldif
  • Set a DN password (redhat in this case)

    MANAGERPASSWORD=$(slappasswd -h {SSHA} -s redhat)
  • Create a manager.ldif file to create a Manager user:

    cat >./manager.ldif<<EOF
    dn:  olcDatabase={2}hdb,cn=config
    changetype: modify
    replace: olcSuffix
    olcSuffix: dc=openstack,dc=org
    replace: olcRootDN
    olcRootDN: cn=Manager,dc=openstack,dc=org
    add: olcRootPW
  • Add the manager ldif

    ldapmodify -Y EXTERNAL -H ldapi:/// -f ./manager.ldif
  • Create an openstack schema:

    cat >./openstack_schema.ldif<<EOF
    dn: dc=openstack,dc=org
    dc: openstack
    objectClass: dcObject
    objectClass: organization
    o: openstack
    dn: ou=Groups,dc=openstack,dc=org
    objectClass: top
    objectClass: organizationalUnit
    ou: groups
    dn: ou=Users,dc=openstack,dc=org
    objectClass: top
    objectClass: organizationalUnit
    ou: users
    dn: ou=Roles,dc=openstack,dc=org
    objectClass: top
    objectClass: organizationalUnit
    ou: roles
  • Add it:

    ldapadd -x -D"cn=Manager,dc=openstack,dc=org" \
    -H ldap://localhost -f ./openstack_schema.ldif -W
  • Check it just in case:

    ldapsearch -x -W -D"cn=Manager,dc=openstack,dc=org" \
    -b "dc=openstack,dc=org" "(objectclass=*)"
  • Create an admin user:

    ADMINPASSWORD=$(slappasswd -h {SSHA} -s redhat)
    cat >./admin.ldif<<EOF
    dn: uid=admin,ou=Users,dc=openstack,dc=org
    objectclass: inetOrgPerson
    objectclass: uidObject
    uid: admin
    cn: admin
    givenName: admin
    title: admin
    sn: admin
    userPassword: ${ADMINPASSWORD}
  • Add it:

    ldapadd -x -D"cn=Manager,dc=openstack,dc=org" \
    -H ldap://localhost -f ./admin.ldif -W
  • Check it:

    ldapsearch -x -W -D"uid=admin,ou=Users,dc=openstack,dc=org" \
    -b "ou=Users,dc=openstack,dc=org" "(objectclass=*)"
  • Create the “enabled_users” group and add the admin user:

    cat >./enabled_users.ldif<<EOF
    dn: cn=enabled_users,ou=Groups,dc=openstack,dc=org
    objectclass: groupOfNames
    cn: EnabledUsers
    member: uid=admin,ou=Users,dc=openstack,dc=org
  • Add it:

    ldapadd -x -D"cn=Manager,dc=openstack,dc=org" \
    -H ldap://localhost -W -f ./enabled_users.ldif
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