LDAP

NURDspace Project
Participants	Fwd
Skills
Status
Niche
Purpose
Tool
Location
Cost
Tool category

{{{Name}}}Property "Tool Name" (as page type) with input value "{{{Name}}}" contains invalid characters or is incomplete and therefore can cause unexpected results during a query or annotation process. Property "Tool Image" (as page type) with input value "File:{{{Picture}}}" contains invalid characters or is incomplete and therefore can cause unexpected results during a query or annotation process. {{{Picture}}} {{#if:{{{Tool}}} | [[Tool Owner::{{{ProjectParticipants}}} | }} {{#if:{{{Tool}}} | [[Tool Cost::{{{Cost}}} | }}

For use with Spacenet we've installed OpenLDAP on NURDServer. On the new NURDServices we're going serious with LDAP.

Connected machines

• Sinterklaas
• Vjdeb
• PrinterPC
• NURDServices
• Proxmox1 (for fixing homedir ownership, only users in group "admins" can actually log in)
• Tankstation

Status

FusionDirectory is running on NURDServices.

It can be accessed on https://ldap.nurdspace.nl.

On Sinterklaas, Vjdeb and the PrinterPC it's working for the local users that existed:

• Homedirs moved to NFS mount from Proxmox1
• Local homedirs and users deleted (except user 'printer' on PrinterPC)
• /home/ is mounted over NFS on boot
• LDAP users can log in and see their homedirs as if nothing has changed
• Users in the LDAP 'sudo' group can sudo on connected workstations.
• Homedir is created on NFS-export when adding a user to LDAP (like this)
• Port 636 (ldaps) is forwarded to NURDServices for future use by the Wiki

Setting up other workstations in this way

To get this to work you need to:

• create all local users in LDAP (if they don't exist already)
• delete local users (optional)
• move homedirs to nurdservices (fix ownership because LDAP-users have a different UID)
• delete local homedirs
• mount /home from proxmox1:/mnt/md0/homedirs over nfs (put it in /etc/fstab)
• install libnss-ldapd and libpam-ldap (URI ldaps://ldap.nurdspace.nl/)
• put https://www.sslcertificaten.nl/files/PositiveSSLCA2.crt in /etc/ssl/certs/ with permissions 644
• in nslcd.conf set the following:

uri ldaps://ldap.nurdspace.nl/
base dc=nurdspace,dc=lan
binddn cn=read-user,ou=systems,dc=nurdspace,dc=lan
bindpw (obtain from other machine)
ssl on
tls_reqcert demand
tls_cacertfile /etc/ssl/certs/PositiveSSLCA2.crt

• restart nslcd
• this information should also be used for pam_ldap.conf
• sudo might not work until you type 'id' which is kind of a mystery

Also useful: http://www.debian-administration.org/article/OpenLDAP_installation_on_Debian#NSS_configuration

In certain cases sudo can break. This can be fixed with a patch while it's not fixed properly.

To do

• Read http://www.openldap.org/doc/admin24/slapdconf2.html
• FTPd nevermind
• Samba nevermind
• Cert installed for ldap.nurdspace.nl. Allow access only over TLS as soon as this works (ldapsearch -v -H ldaps://ldap.nurdspace.nl/ -D uid=fwd,ou=people,dc=nurdspace,dc=lan -W -b dc=nurdspace,dc=lan)
• Fix "nurdservices slapd[32524]: <= bdb_equality_candidates: (uid) not indexed" errors in /var/log/syslog
• Connect machines to LDAP over ldaps instead of ldap.
• Disable non-SSL ldap
• Migrate all local users on Infra machines to LDAP
• Migrate all homedirs to Proxmox1
• Maintain sudo'ers only through the LDAP and disable local root accounts (backdoor in case of emergency?)
• Disable all relevant services on Nurdserver v1
• Upgrade FusionDirectory from 1.0.4 to 1.0.5
• Exclude weak ciphers from olcTLSCipherSuite in cn=config
• Setting "change password on first login" in FusionDirectory doesn't get enforced through PAM
• Check out what happens to the history when usernames from the wiki no longer exist in the LDAP -> Easier to merge them all into 1 user "history". What happens when you do this:

Adding edit count of (8 and 70)
Updating archive table (8 to 70)
Updating revision table (8 to 70)
Updating filearchive table (8 to 70)
Updating image table (8 to 70)
Updating oldimage table (8 to 70)
Updating recentchanges table (8 to 70)
Updating logging table (8 to 70)
Updating ipblocks table (8 to 70)
Updating ipblocks table (8 to 70)
Updating watchlist table (8 to 70)
Updating archive table (Aldert Hazenberg to History)
Updating revision table (Aldert Hazenberg to History)
Updating filearchive table (Aldert Hazenberg to History)
Updating image table (Aldert Hazenberg to History)
Updating oldimage table (Aldert Hazenberg to History)
Updating recentchanges table (Aldert Hazenberg to History)
Updating ipblocks table (Aldert Hazenberg to History)
Updating ipblocks table (Aldert Hazenberg to History)

• Migrate wiki users and merge them with other users
• Use LDAP as userdb back-end for wiki (like so)
• Add all relevant fields of Wiki users to LDAP profiles (this will require Schema extending the schema) we shouldn't want this
• Maintain Members page from LDAP (Like so, but this only displays 1 entry. Could be fixed like so.)