Add roles and variables

ansible/ansible-requirements.yml

@@ -0,0 +1,11 @@
+---
+# Ansible Galaxy Requirements
+# Install with: ansible-galaxy install -r ansible-requirements.yml
+
+# https://github.com/geerlingguy/ansible-role-swap
+- name: geerlingguy.swap
+  version: 1.1.1
+
+# https://github.com/geerlingguy/ansible-role-docker
+- name: geerlingguy.docker
+  version: 7.6.0

ansible/ansible.cfg

@@ -1,2 +1,4 @@
 [defaults]
 host_key_checking=False
+# stdout_callback = minimal
+color = true

ansible/group_vars/all.yml

@@ -0,0 +1,14 @@
+---
+swap_file_size_mb: 256 
+swap_file_state: present
+swap_file_existing_size_mb: 0
+
+docker_edition: 'ce'
+docker_packages:
+  - "docker-{{ docker_edition }}"
+  - "docker-{{ docker_edition }}-cli"
+  - "docker-{{ docker_edition }}-rootless-extras"
+docker_packages_state: present
+docker_users:
+  - vagrant
+

ansible/master.yml

@@ -1,31 +1,49 @@
 ---
-- hosts: all
+- hosts: swarm_master
   become: true
 
+  
+  
+  vars_files:
+    - group_vars/all.yml
+  vars:
+    swap_file_state: present
+    swap_file_existing_size_mb: 0
+  
+  roles:
+    - role: geerlingguy.swap
+    - role: geerlingguy.docker
+    - role: common
+
   tasks:
-    # write hello world to a file in the home directory
-    - name: write hello 
-      copy:
-        content: "hello ansible from ansible-manager!"
-        dest: /home/vagrant/hello2.txt
-        mode: 0644
-      become: true
+    - name: Check memory and swap usage
+      command: free -m
+      register: memory_info
+      changed_when: false
 
-    - name: Echo hello
-      shell: echo 'hello ansible!'
-      args:
-        chdir: $HOME
-    # Echo the contents of the hello.txt file
-    - name: Echo hello
-      shell: cat /home/vagrant/hello.txt
-      args:
-        chdir: $HOME
-    # Echo the contents of the hello2.txt file
-    - name: Echo hello2
-      shell: cat /home/vagrant/hello2.txt
-      args:
-        chdir: $HOME
+    - name: Ensure Python pip is installed
+      package:
+        name: python3-pip
+        state: present
 
+    - name: Ensure Docker SDK for Python is installed
+      pip:
+        name: docker>=5.0.0
+        executable: pip3
+        
+    - name: Init a new swarm with default parameters
+      community.docker.docker_swarm:
+        state: present
+    
+    - name: Debug all variables
+      debug:
+        msg: "swap_file_size_mb: {{ swap_file_size_mb }}, swap_file_state: {{ swap_file_state }}"
+    - name: Debug Docker variables
+      debug:
+        msg: "docker_edition: {{ docker_edition }}, docker_packages: {{ docker_packages }}"
+    # - name: Debug all host variables
+    #   debug:
+    #     var: hostvars[inventory_hostname]
 
     # - name: Initialize the cluster
     #   shell: docker swarm init --advertise-addr 192.168.56.10 >> cluster_initialized.txt

ansible/roles/common/tasks/main.yml

@@ -0,0 +1,7 @@
+- name: Check memory and swap usage 
+  command: free -m
+  register: memory_info
+  changed_when: false
+- name: Run the equivalent of "apt-get update" as a separate step
+  ansible.builtin.apt:
+    update_cache: yes

ansible/swarm-node.yml

@@ -0,0 +1,16 @@
+---
+- hosts: swarm_workers 
+  become: true
+
+  vars:
+  roles:
+    - role: geerlingguy.swap
+      swap_file_size_mb: 1024 
+    - role: geerlingguy.docker
+    - role: common
+
+  tasks:
+    - name: Check memory and swap usage
+      command: free -m
+      register: memory_info
+      changed_when: false