Difference between revisions of "Using Active Directory for CentOS"

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Line 78: Line 78:
 
  /etc/init.d/samba start
 
  /etc/init.d/samba start
 
  /etc/init.d/winbind start
 
  /etc/init.d/winbind start
 +
 +
'''Step 3 Initialise Kerberos'''
 +
 +
kinit domain_admin_account@EXAMPLE.DIRECTORY
 +
 +
Next check to be sure you got a ticket from the domain controller
 +
 +
klist
 +
 +
'''Step 4: join the Active Directory'''
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 +
net ads join -U domainadminuser@EXAMPLE.DOMAIN

Revision as of 14:31, 15 May 2006

I am using a default server installation of CentOS with X, KDE and Gnome added. Also i enabled the text editor option for VIM in the package selection section of the installer.

Also this guide is specific to Samba 3.

Step 1: Edit /etc/krb5.conf

Edit /etc/krb5.conf to look like the following, substituting EXAMPLE.DIRECTORY and example.directory with your active directory domain name. Where ever block capitals are used then make sure your own domain name is in block capitals also. The lins in the realms section kdc = 10.0.0.1 should be replaced with the hostname or the IP address of your active directory controller.

[logging]
default = FILE:/var/log/krb5libs.log
kdc = FILE:/var/log/krb5kdc.log
admin_server = FILE:/var/log/kadmind.log 

[libdefaults]
ticket_lifetime = 24000
default_realm = EXAMPLE.DIRECTORY
dns_lookup_realm = false
dns_lookup_kdc = false 

[realms]
EXAMPLE.DIRECTORY = {
kdc = 10.0.0.1
default_domain = example.directory
}

[domain_realm]
.example.directory = EXAMPLE.DIRECTORY
example.directory = EXAMPLE.DIRECTORY

[kdc]
profile = /var/kerberos/krb5kdc/kdc.conf

[appdefaults]
pam = {
     debug = false
     ticket_lifetime = 36000
     renew_lifetime = 36000
     forwardable = true
     krb4_convert = false
}


Step 2: Configure smb.conf

I found it easier to make a backup of the existing smb.conf and then replacing it with the basic one below. You can add shares later.

[global]
security = ads
netbios name = DOMAIN
realm = EXAMPLE.DIRECTORY
password server = domainserver.example.directory
workgroup = DOMAIN
idmap uid = 500-10000000
idmap gid = 500-10000000
winbind separator = +
winbind enum users = no
winbind enum groups = no
winbind use default domain = yes
template homedir = /home/%D/%U
template shell = /bin/bash
client use spnego = yes
domain master = no


The line template homedir = /home/%D/%U tells Samba to create the Active Directories user homes to the directory /home/DOMAIN/user. For this to function correctly you must issue the following command:

mkdir /home/DOMAIN

If connecting to a Windows 2003 Active Directory controller they you will need to add the following lines to smb.conf

client use spnego = no
server signing = auto


Now we need to stop and start Samba and winbind. It is important that this is done in the correct order as follows.

/etc/init.d/samba stop
/etc/init.d/winbind stop
/etc/init.d/samba start
/etc/init.d/winbind start

Step 3 Initialise Kerberos

kinit domain_admin_account@EXAMPLE.DIRECTORY

Next check to be sure you got a ticket from the domain controller

klist

Step 4: join the Active Directory

net ads join -U domainadminuser@EXAMPLE.DOMAIN