diff --git a/README.md b/README.md
index ddb7317..2b3758a 100644
--- a/README.md
+++ b/README.md
@@ -1,14 +1,10 @@
 # Ansible configuration for the Netz39 infrastructure
 
-Currently including the following hosts:
+This call lists all hosts defined in the inventory:
 
-* tau.netz39.de
-* pottwal.n39.eu
-* unicorn.n39.eu
-* platon.n39.eu
-* radon.n39.eu
-* krypton.n39.eu
-* oganesson.n39.eu
+```bash
+ansible -i inventory.yml all --list-hosts
+```
 
 ## Setup
 ```bash
diff --git a/all.yml b/all.yml
new file mode 100644
index 0000000..3d14478
--- /dev/null
+++ b/all.yml
@@ -0,0 +1,38 @@
+---
+# tasks for all hosts
+
+- hosts: all
+  become: true
+
+  vars:
+    ansible_python_interpreter: /usr/bin/python3
+
+  roles:
+    - role: ansible.timezone
+
+  tasks:
+    - name: Update and clean package cache
+      apt:
+        update_cache: true
+        cache_valid_time: 3600
+        autoclean: true
+      changed_when: false
+
+    - name: Ensure unattended-upgrades is installed and up to date
+      apt:
+        name: unattended-upgrades
+        state: present
+
+    - name: Setup unattended-upgrades
+      include_role:
+        name: ansible-role-unattended-upgrades
+      vars:
+        unattended_origins_patterns:
+          - "origin=Debian,archive=buster-security"
+          - "o=Debian,a=buster-updates"
+        unattended_package_blacklist: [cowsay]
+        unattended_mail: "root"
+
+    - name: Setup users
+      include_role:
+        name: users
diff --git a/ansible.cfg b/ansible.cfg
new file mode 100644
index 0000000..fa52dca
--- /dev/null
+++ b/ansible.cfg
@@ -0,0 +1,2 @@
+[defaults]
+inventory=inventory.yml
diff --git a/main.yml b/main.yml
index 88c86ef..797b943 100644
--- a/main.yml
+++ b/main.yml
@@ -1,39 +1,8 @@
 ---
-- hosts: all
-  become: true
+# main playbook aggregating all the other playbooks
 
-  vars:
-    ansible_python_interpreter: /usr/bin/python3
-
-  roles:
-    - role: ansible.timezone
-
-  tasks:
-    - name: Update and clean package cache
-      apt:
-        update_cache: true
-        cache_valid_time: 3600
-        autoclean: true
-      changed_when: false
-
-    - name: Ensure unattended-upgrades is installed and up to date
-      apt:
-        name: unattended-upgrades
-        state: present
-
-    - name: Setup unattended-upgrades
-      include_role:
-        name: ansible-role-unattended-upgrades
-      vars:
-        unattended_origins_patterns:
-          - "origin=Debian,archive=buster-security"
-          - "o=Debian,a=buster-updates"
-        unattended_package_blacklist: [cowsay]
-        unattended_mail: "root"
-
-    - name: Setup users
-      include_role:
-        name: users
+- name: Setup for all hosts
+  import_playbook: all.yml
 
 - name: Specific setup for all proxmox hosts
   import_playbook: proxmox.yml