diff --git a/testsite/group_vars/all.yml b/testsite/group_vars/all.yml
index b506abcb15b9fd2ccd780e92d1f9703b10263d02..0b8f87e5ea2929484e9f23a1f943ac3f759de2b6 100644
--- a/testsite/group_vars/all.yml
+++ b/testsite/group_vars/all.yml
@@ -1,4 +1,13 @@
 ---
+
+# Define domain for the test site that should be used.
+testsite_domain: example.com
+
+# Derive some additional values that will be used - basing them on domain.
+testsite_domain_underscores: "{{ testsite_domain | regex_replace('\\.', '_') }}"
+testsite_domain_alternative: "{{ testsite_domain | regex_replace('\\.[^.]+$', '.something') }}"
+testsite_ldap_base: "{{ testsite_domain | regex_replace('\\.', ',dc=') | regex_replace('^', 'dc=') }}"
+
 # Configuration for roles bootstrap and preseed.
 ansible_key: "{{ lookup('file', '~/.ssh/id_rsa.pub') }}"