Changes to use Debian OS instead of CentOS 7

Changes to use Debian OS for the training VM infrastructure
instead of CentOS 7.

group_vars/all.yml

@@ -70,3 +70,10 @@ training_node_user: centos
 training_node_device_name: /dev/sda1
 training_node_volume_type: gp2
 training_node_volume_size: 20
+
+# Docker version
+docker_ce_package_version: "5:20.10.5~3-0~debian-buster"
+docker_ce_cli_package_version: "5:20.10.5~3-0~debian-buster"
+containerd_io_package_version: "1.4.3-1"
+
+

roles/common/tasks/main.yml

@@ -1,14 +1,14 @@
 ---
-  - name: Run yum update to get latest packages
-    yum:
-        name: '*'
-        state: latest
+  - name: Safe update of packages
+    ansible.builtin.apt:
+      upgrade: safe
+      update_cache: yes
 
   - name: Install convenience packages
-    yum:
-      name:
+    ansible.builtin.apt:
+      pkg:
         - bash-completion
-        - bind-utils
+        - bind9-dnsutils
         - screen
         - vim
       state: present

roles/common/tasks/users.yml

@@ -14,8 +14,8 @@
     lineinfile:
       dest: /etc/sudoers
       state: present
-      regexp: '^%wheel'
-      line: '%wheel ALL=(ALL) NOPASSWD: ALL'
+      regexp: '^%sudo'
+      line: '%sudo ALL=(ALL) NOPASSWD: ALL'
       validate: 'visudo -cf %s'
 
   - name: Trainers unix group

roles/swarm/tasks/main.yml

@@ -9,38 +9,32 @@
     notify:
       - reload systemd-journald
 
-  - name: Install docker-ce required/recommended packages
-    yum:
-      name:
-        - yum-utils
-        - device-mapper-persistent-data
-        - lvm2
+  - name: Add Docker CE repository key
+    apt_key:
+      url: https://download.docker.com/linux/debian/gpg
+      id: 9DC858229FC7DD38854AE2D88D81803C0EBFCD88
       state: present
 
-  # Off for (at minimum) preventing shibboleth unix domain socket creation
-  - name: Put SELinux in permissive mode, logging actions that would be blocked.
-    selinux:
-      policy: targeted
-      state: permissive
-
-  - name: Add Docker repo
-    get_url:
-      url: https://download.docker.com/linux/centos/docker-ce.repo
-      dest: /etc/yum.repos.d/docker-ce.repo
-    become: yes
+  - name: Add Docker CE repository
+    apt_repository:
+      repo: deb [arch=amd64] https://download.docker.com/linux/debian bullseye stable
 
   - name: Install Docker
-    package:
-      name: docker-ce
+    apt:
+      name: "{{ packages }}"
+      update_cache: yes
       state: present
-    become: yes
+    vars:
+      packages:
+        - "docker-ce={{ docker_ce_package_version }}"
+        - "docker-ce-cli={{ docker_ce_cli_package_version }}"
+        - "containerd.io={{ containerd_io_package_version }}"
 
-  - name: Start Docker service
-    service:
+  - name: Enable Docker service
+    systemd:
       name: docker
-      state: started
       enabled: yes
-    become: yes
+      masked: no
 
   - name: Configure Docker daemon
     copy:
@@ -56,7 +50,6 @@
     systemd:
       name: docker
       state: started
-      enabled: yes
 
   - name: Add users to Docker group
     user:
@@ -67,35 +60,17 @@
       - skoranda
       - satkinson
 
-  - name: Install bash completion
-    yum:
-      name:
-        - bash-completion
-      state: present
-
-  - name: Configure bash completion for Docker
-    get_url:
-      url: https://raw.githubusercontent.com/docker/compose/1.24.1/contrib/completion/bash/docker-compose
-      dest: /etc/bash_completion.d/docker-compose
-      mode: '0644'
-
-  # Pip installed docker module in python is required for ansible docker_secret action
-  # on Centos 7
-  - name: Install epel on swarm node
-    yum:
-      name:
-        - epel-release
-      state: present
+  - name: Install Python3 pip
+    apt:
+      name: python3-pip
+      update_cache: no
 
-  - name: Install pip on swarm node
-    yum:
-      name:
-        - python2-pip
+  - name: Install Python3 docker module
+    pip:
+      executable: /usr/bin/pip3
+      name: docker
       state: present
 
-  - name: Pip install docker python module
-    command: pip install docker
-
   - name: Initialize single node swarm
     community.docker.docker_swarm:
       state: present

roles/training/tasks/main.yml

@@ -5,15 +5,15 @@
       groups: docker
       append: yes
 
-  - name: Add training user to wheel group
+  - name: Add training user to sudo group
     user:
       name: training
-      groups: wheel
+      groups: sudo
       append: yes
 
   - name: Install convenience packages
-    yum:
-      name:
+    ansible.builtin.apt:
+      pkg:
         - emacs
         - nano
       state: present