SAC:Setup LDAP Authentication

Setting up FC4 to use LDAP for login authentication

Run:

 sudo authconfig

Enabled LDAP on first screen like this:

     │  User Information        Authentication                         │ 
     │  [ ] Cache Information   [*] Use MD5 Passwords                  │ 
     │  [ ] Use Hesiod          [*] Use Shadow Passwords               │ 
     │  [*] Use LDAP            [*] Use LDAP Authentication            │ 
     │  [ ] Use NIS             [ ] Use Kerberos                       │ 
     │  [ ] Use Winbind         [ ] Use SMB Authentication             │ 
     │                          [ ] Use Winbind Authentication         │ 
     │                          [ ] Local authorization is sufficient  │ 

Enter LDAP Settings like this:

     │          [x] Use TLS                              │ 
     │  Server: ldap.osgeo.org__________________________ │ 
     │ Base DN: ou=People,dc=osgeo,dc=org_______________ │

authconfig sets a number of PAM-related items for us, but it does a poor job of setting up the LDAP configuration. We are going to edit /etc/ldap.conf and change it to look like this:

 BASE dc=osgeo, dc=org
 URI ldaps://ldap.osgeo.org
 pam_groupdn cn=telascience,ou=Shell,dc=osgeo,dc=org
 nss_base_passwd ou=People,dc=osgeo,dc=org
 nss_base_shadow ou=People,dc=osgeo,dc=org
 nss_base_group  ou=Group,dc=osgeo,dc=org
 ldap_version 3
 TLS_CHECKPEER yes
 TLS_REQCERT demand
 TLS_CACERTDIR /etc/openldap/cacerts
 pam_password md5

After editing /etc/ldap.conf, we need to link /etc/openldap/ldap.conf to use that one, instead of its own.

 mv /etc/openldap/ldap.conf /etc/openldap/ldap.conf.original
 ln -s /etc/ldap.conf /etc/openldap/ldap.conf

Next, you need to scp the DigiCertCA.crt from one of the existing blades to the machine you are enabling:

 scp /etc/openldap/cacerts/DigiCertCA.crt hobu@mynewblade:/home/hobu

Once there, mv it into the same location:

 sudo mv DigiCertCA.crt /etc/openldap/cacerts

Once this is setup people can be added to the OSGeo LDAP Shell group by adding them at the following url for those already in the group:

 https://www.osgeo.org/cgi-bin/auth/ldap_shell.py

Sudo access must be added locally per server.

Setting up Bugzilla to use LDAP Authentication

Details at http://www.bugzilla.org/docs/tip/html/extraconfig.html#bzldap

It seems that the LDAP entries require an email attribute that bugzilla can use for sending email, but generally speaking this seems like a well supported option for bugzilla. I do wonder if there is an option for users not in LDAP to create accounts in bugzilla for the purpose of submitting bugs. I think this is desirable or even necessary!

sudo

http://www.courtesan.com/sudo/readme_ldap.html

Pointers to good LDAP information

• http://ldots.org/ldap - moderately helpful.