diff --git a/playbooks/inventory.ini b/playbooks/inventory.ini
new file mode 100644
index 0000000..92f96d7
--- /dev/null
+++ b/playbooks/inventory.ini
@@ -0,0 +1,11 @@
+[master]
+home-k8s1 ansible_host=192.168.0.201 ansible_user=pi ansible_ssh_private_key_file=~/.ssh/id_rsa
+
+[workers]
+home-k8s2 ansible_host=192.168.0.202 ansible_user=pi ansible_ssh_private_key_file=~/.ssh/id_rsa
+home-k8s3 ansible_host=192.168.0.203 ansible_user=pi ansible_ssh_private_key_file=~/.ssh/id_rsa
+home-k8s4 ansible_host=192.168.0.204 ansible_user=pi ansible_ssh_private_key_file=~/.ssh/id_rsa
+home-k8s0 ansible_host=192.168.0.205 ansible_user=pi ansible_ssh_private_key_file=~/.ssh/id_rsa
+
+[all:vars]
+ansible_python_interpreter=/usr/bin/python3
diff --git a/playbooks/update_upgrade_os.yml b/playbooks/update_upgrade_os.yml
new file mode 100644
index 0000000..2b80904
--- /dev/null
+++ b/playbooks/update_upgrade_os.yml
@@ -0,0 +1,27 @@
+---
+- name: Update and upgrade Raspberry Pi
+  hosts: all
+  become: yes
+  tasks:
+    - name: Update the APT package index
+      apt:
+        update_cache: yes
+
+    - name: Upgrade all installed packages
+      apt:
+        upgrade: dist
+        autoremove: yes
+        autoclean: yes
+        cache_valid_time: 3600  # Cache validity time in seconds
+
+    #- name: Ensure that Raspberry Pi firmware is up to date
+    #  shell: sudo rpi-update
+    #  args:
+    #    creates: /boot/.firmware_up_to_date
+
+    - name: Reboot if needed
+      reboot:
+        msg: "Rebooting the Raspberry Pi after update"
+        reboot_timeout: 600
+        test_command: uptime
+