After testing with sso I decided to wait until a production version is available. On one site I made a discovery, after testing with sso on this site, which can be usefull for many DA users.
I have this easy solution succesfully implemented on three different DA sites. After logging in on one domain I am logged in in all other domains.

My installation where it is working:
- DA installed
- all domains end in the same domainname like:
+ www.example.com or example.com
+ dom1.example.com
+ dom2.example.com
+ dom3.example.com
- all domains share only one settings file --> the default settings.php

Solution:
Define in the settings.php file the cookie_domain like:
$cookie_domain = 'example.com';

Attention:
- it is not working allways with this settings change, it seems to be dependent on the installed software and or version on your server. At least on one DA site it fails.
- maybe you have to delete all cookies for the domains before it starts working. Log in afterwards.
- I only tested with Drupal 5.

That's all folks!

I hope most of you will benefit of this alternative.

Comments

agentrickard’s picture

agentrickard
he/him
Primary language English
Location Georgia (US)
commented
Status: Active » Closed (fixed)

This is already in the documentation. Cookie-sharing on subdomains is fully supported by the cookie standard. You can't share cookies across domains otherwise, because it is a security risk.

Generally, you should use '.example.com' as the cookie domain.

promes’s picture

promes
Primary language Dutch
commented

Agentrickard you are right. I forgot to mention you don't have to implement additional modules, like sso, to be able to log in to all domains (as defined in #1).

I think most people don't set the cookie domain in the settings file (as I never did before, since by default it is unset) and don't know about this behaviour. That's why I made this issue.

Maybe it is wise to point this out in your documentation. A lot of people are struggling with sso now and some of them don't have to use that module.

croryx’s picture

croryx commented

As agentrickard points out, this behavior is already documented:
README.txt 1.4.1 - Logging In To Multiple Domains
INSTALL.txt 4.3 - $cookie_domain

seddonym’s picture

seddonym commented

Thanks for documenting this - very helpful.

agentrickard’s picture

agentrickard
he/him
Primary language English
Location Georgia (US)
commented

IF someone wants to take a stab at creating/updating handbook pages, that would be great.

http://drupal.org/node/432266

mrgoltra’s picture

mrgoltra commented

subscribing+

Hello. I was wondering if you commented out

# $db_prefix = array(
# 'default' => '',
# 'users' => 'database name here',
# 'sessions' => 'database name here',
# 'role' => 'database name here',
# 'authmap' => 'database name here',
# );

I am trying to setup DA using the same setup as yours and I can't seem to login to the other subdomains.

site.com
1.site.com
2.site.com
3.site.com
4.site.com

mably’s picture

mably commented
Issue summary: View changes

A new lightweight SSO solution has been implemented in the Domain Extras project.