cleanup: removed centos code, cleaned up debian & ubuntu references

README.md

@@ -4,12 +4,11 @@
 
 This role will install docker on the target host.
 
-This role should work on both Ubuntu and CentOS based hosts.
-
 NOTE:
 
-The following variables must be specified in the calling playbook (usually
+The following variable(s) must be specified in the calling playbook (usually
 done by doing a 'gather_facts' action);
 
 {{ ansible_distribution }}
+{{ ansible_os_family }}
 

tasks/main.yml

@@ -4,13 +4,13 @@
 # This role is based on the steps presented at;
 #   - https://docs.docker.com/engine/install/ubuntu/
 #   - https://docs.docker.com/engine/install/debian/
-#   - https://docs.docker.com/engine/install/centos/
+#   - https://wiki.alpinelinux.org/wiki/Docker
 #
 ###########################################################################
 # tasks file for docker
 
 ############################################################
-- name: Ensure old docker packages are removed (Ubuntu/Debian)
+- name: Ensure old docker packages are removed (Debian based repos)
   apt:
     name:
       - docker
@@ -21,23 +21,6 @@
     state: absent
   when: ansible_os_family == "Debian"
 
-############################################################
-- name: Ensure old docker packages are removed (CentOS)
-  yum:
-    name:
-      - docker-client
-      - docker-client-latest
-      - docker-common
-      - docker-latest
-      - docker-latest-logrotate
-      - docker-logrotate
-      - docker-engine
-      - podman
-      - runc
-      - buildah
-    state: absent
-  when: ansible_distribution == "CentOS"
-
 ############################################################
 - name: Ensure required supporting packages are installed (Ubuntu)
   apt:
@@ -61,14 +44,6 @@
     state: present
   when: ansible_distribution == "Debian"
 
-############################################################
-- name: Ensure required supporting packages are installed (CentOS)
-  yum:
-    name:
-      - yum-utils
-    state: present
-  when: ansible_distribution == "CentOS"
-
 ############################################################
 - name: Retrieve docker's official GPG key (Ubuntu)
   shell:
@@ -112,15 +87,6 @@
       | sudo tee /etc/apt/sources.list.d/docker.list > /dev/null
   when: ansible_distribution == "Debian"
 
-############################################################
-- name: Add the stable docker repository (CentOS)
-  shell:
-    cmd: >
-      /usr/bin/yum-config-manager
-      --add-repo
-      https://download.docker.com/linux/centos/docker-ce.repo
-  when: ansible_distribution == "CentOS"
-
 ############################################################
 - name: Update package cache (Ubuntu/Debian)
   apt:
@@ -137,16 +103,6 @@
     state: present
   when: ansible_os_family == "Debian"
 
-############################################################
-- name: Install docker packages (CentOS)
-  yum:
-    name:
-      - docker-ce
-      - docker-ce-cli
-      - containerd.io
-    state: present
-  when: ansible_distribution == "CentOS"
-
 ############################################################
 - name: Add user to docker group
   user:
@@ -163,8 +119,7 @@
 ############################################################
 # using the pip3 command rather than the pip ansible module
 # because ansible can get in a weird state depending on the
-# python version used on the target host (python 2 on CentOS 7
-# vs python 3 otherwise)
+# python version used on the target host
 - name: Install docker python package
   shell:
     cmd: pip3 install docker