diff --git a/hosts b/hosts
new file mode 100644
index 0000000..3c591f1
--- /dev/null
+++ b/hosts
@@ -0,0 +1,24 @@
+##########################
+# DO Community Playbooks
+# Example Inventory
+##########################
+
+#########################################################################
+# The "servers" groups is an example of a group with three servers,
+# each identified by a custom alias.
+#########################################################################
+
+[servers]
+server1 ansible_host=174.138.13.97
+server2 ansible_host=188.166.115.68
+server3 ansible_host=188.166.123.245
+
+##########################################################################
+# Makes sure we use Python 3 (/usr/bin/python3) on remote hosts.
+# [servers:vars] sets global values for all nodes in the "servers" group.
+# This is necessary because by default Ansible will try to use
+# /usr/bin/python, which is not available on newer Ubuntu versions.
+#########################################################################
+[servers:vars]
+ansible_python_interpreter=/usr/bin/python3
+
diff --git a/mariadb/playbook.yml b/mariadb/playbook.yml
deleted file mode 100755
index 5a9fc8c..0000000
--- a/mariadb/playbook.yml
+++ /dev/null
@@ -1,29 +0,0 @@
-#################################################
-# DO Community Playbooks: Docker
-#################################################
----
-- hosts: all
-  become: true
-  vars_files:
-    - vars/default.yml
-
-  tasks:
-    - name: Pull default Mariadb image
-      docker_image:
-        name: "{{ image_name }}"
-        source: pull
-        state: present
-
-    # Creates the number of containers defined by the variable create_containers, using values from vars file
-    - name: Create Mariadb container
-      docker_container:
-        name: "{{ container_name }}"
-        image: "{{ image_name }}"
-        state: started
-        restart_policy: "unless-stopped"
-        env:
-          MARIADB_ROOT_PASSWORD: "{{ db_password }}"
-        published_ports:
-          - 3306:3306
-        volumes:
-          - "{{ data_location }}:/var/lib/mysql"
diff --git a/mariadb/readme.md b/mariadb/readme.md
deleted file mode 100644
index f6d7ecc..0000000
--- a/mariadb/readme.md
+++ /dev/null
@@ -1,46 +0,0 @@
-# Docker on Ubuntu 18.04
-
-This playbook will install Docker an Ubuntu 18.04 machine, as explained in the guide on
-[How to Use Ansible to Install and Set Up Docker on Ubuntu 18.04](https://www.digitalocean.com/community/tutorials/how-to-use-ansible-to-install-and-set-up-docker-on-ubuntu-18-04).
-A number of containers will be created with the options specified in the `vars/default.yml` variable file.
-
-## Settings
-
-- `create_containers`: number of containers to create.
-- `default_container_name`: default name for new containers.
-- `default_container_image`: default image for new containers.
-- `default_container_command`: default command to run on new containers.
-
-
-## Running this Playbook
-
-Quick Steps:
-
-### 1. Obtain the playbook
-```shell
-git clone https://github.com/do-community/ansible-playbooks.git
-cd ansible-playbooks/docker_ubuntu1804
-```
-
-### 2. Customize Options
-
-```shell
-nano vars/default.yml
-```
-
-```yml
-#vars/default.yml
----
-create_containers: 4
-default_container_name: docker
-default_container_image: ubuntu
-default_container_command: sleep 1d
-```
-
-### 3. Run the Playbook
-
-```command
-ansible-playbook -l [target] -i [inventory file] -u [remote user] playbook.yml
-```
-
-For more information on how to run this Ansible setup, please check this guide: [How to Use Ansible to Install and Set Up Docker on Ubuntu 18.04](https://www.digitalocean.com/community/tutorials/how-to-use-ansible-to-install-and-set-up-docker-on-ubuntu-18-04).
\ No newline at end of file
diff --git a/mariadb/vars/default.yml b/mariadb/vars/default.yml
deleted file mode 100644
index 90cdc16..0000000
--- a/mariadb/vars/default.yml
+++ /dev/null
@@ -1,6 +0,0 @@
----
-container_name: mariadb
-image_name: mariadb:latest
-db_password: '123456'
-data_location: /var/lib/mariadb/data
-