Fedora CoreOS support (#5657)

* fedora coreos support
- bootstrap and new fact for

* fedora coreos support
- fix bootstrap condition

* fedora coreos support
- allow customize packages for fedora coreos bootstrap

* fedora coreos support
- prevent install ptyhon3 and epel via dnf for fedora coreos

* fedora coreos support
- handle all ostree like os in same way

* fedora coreos support
- handle all ostree like os in same way for crio

* fedora coreos support
- add fcos documentations

roles/container-engine/docker/tasks/main.yml

@@ -1,12 +1,12 @@
 ---
-- name: check if atomic host
+- name: check if atomic host or fedora coreos
   stat:
     path: /run/ostree-booted
   register: ostree
 
-- name: set is_atomic
+- name: set is_ostree
   set_fact:
-    is_atomic: "{{ ostree.stat.exists }}"
+    is_ostree: "{{ ostree.stat.exists }}"
 
 - name: gather os specific variables
   include_vars: "{{ item }}"
@@ -60,7 +60,7 @@
   retries: 4
   delay: "{{ retry_stagger | d(3) }}"
   with_items: "{{ docker_repo_key_info.repo_keys }}"
-  when: not (ansible_os_family in ["CoreOS", "Coreos", "Container Linux by CoreOS", "Flatcar", "Flatcar Container Linux by Kinvolk", "RedHat", "Suse", "ClearLinux"] or is_atomic)
+  when: not (ansible_os_family in ["CoreOS", "Coreos", "Container Linux by CoreOS", "Flatcar", "Flatcar Container Linux by Kinvolk", "RedHat", "Suse", "ClearLinux"] or is_ostree)
 
 - name: ensure docker-ce repository is enabled
   action: "{{ docker_repo_info.pkg_repo }}"
@@ -68,7 +68,7 @@
     repo: "{{ item }}"
     state: present
   with_items: "{{ docker_repo_info.repos }}"
-  when: not (ansible_os_family in ["CoreOS", "Coreos", "Container Linux by CoreOS", "Flatcar", "Flatcar Container Linux by Kinvolk", "RedHat", "Suse", "ClearLinux"] or is_atomic) and (docker_repo_info.repos|length > 0)
+  when: not (ansible_os_family in ["CoreOS", "Coreos", "Container Linux by CoreOS", "Flatcar", "Flatcar Container Linux by Kinvolk", "RedHat", "Suse", "ClearLinux"] or is_ostree) and (docker_repo_info.repos|length > 0)
 
 - name: ensure docker-engine repository public key is installed
   action: "{{ dockerproject_repo_key_info.pkg_key }}"
@@ -82,7 +82,7 @@
   delay: "{{ retry_stagger | d(3) }}"
   with_items: "{{ dockerproject_repo_key_info.repo_keys }}"
   when:
-    - not (ansible_os_family in ["CoreOS", "Coreos", "Container Linux by CoreOS", "Flatcar", "Flatcar Container Linux by Kinvolk", "RedHat", "Suse", "ClearLinux"] or is_atomic)
+    - not (ansible_os_family in ["CoreOS", "Coreos", "Container Linux by CoreOS", "Flatcar", "Flatcar Container Linux by Kinvolk", "RedHat", "Suse", "ClearLinux"] or is_ostree)
     - use_docker_engine is defined and use_docker_engine
 
 - name: ensure docker-engine repository is enabled
@@ -93,13 +93,13 @@
   with_items: "{{ dockerproject_repo_info.repos }}"
   when:
     - use_docker_engine is defined and use_docker_engine
-    - not (ansible_os_family in ["CoreOS", "Coreos", "Container Linux by CoreOS", "Flatcar", "Flatcar Container Linux by Kinvolk", "RedHat", "Suse", "ClearLinux"] or is_atomic) and (dockerproject_repo_info.repos|length > 0)
+    - not (ansible_os_family in ["CoreOS", "Coreos", "Container Linux by CoreOS", "Flatcar", "Flatcar Container Linux by Kinvolk", "RedHat", "Suse", "ClearLinux"] or is_ostree) and (dockerproject_repo_info.repos|length > 0)
 
 - name: Configure docker repository on Fedora
   template:
     src: "fedora_docker.repo.j2"
     dest: "{{ yum_repo_dir }}/docker.repo"
-  when: ansible_distribution == "Fedora" and not is_atomic
+  when: ansible_distribution == "Fedora" and not is_ostree
 
 - name: Configure docker repository on RedHat/CentOS/Oracle Linux
   yum_repository:
@@ -110,13 +110,13 @@
     gpgkey: "{{ docker_rh_repo_gpgkey }}"
     keepcache: "{{ docker_rpm_keepcache | default('1') }}"
     proxy: " {{ http_proxy | default('_none_') }}"
-  when: ansible_distribution in ["CentOS","RedHat","OracleLinux"] and not is_atomic
+  when: ansible_distribution in ["CentOS","RedHat","OracleLinux"] and not is_ostree
 
 - name: check if container-selinux is available
   yum:
     list: "container-selinux"
   register: yum_result
-  when: ansible_distribution in ["CentOS","RedHat"] and not is_atomic
+  when: ansible_distribution in ["CentOS","RedHat"] and not is_ostree
 
 - name: Configure extras repository on RedHat/CentOS if container-selinux is not available in current repos
   yum_repository:
@@ -130,7 +130,7 @@
     keepcache: "{{ docker_rpm_keepcache | default('1') }}"
     proxy: " {{ http_proxy | default('_none_') }}"
   when:
-    - ansible_distribution in ["CentOS","RedHat"] and not is_atomic
+    - ansible_distribution in ["CentOS","RedHat"] and not is_ostree
     - yum_result.results | length == 0
 
 - name: Copy yum.conf for editing
@@ -138,7 +138,7 @@
     src: "{{ yum_conf }}"
     dest: "{{ docker_yum_conf }}"
     remote_src: yes
-  when: ansible_distribution in ["CentOS","RedHat","OracleLinux"] and not is_atomic
+  when: ansible_distribution in ["CentOS","RedHat","OracleLinux"] and not is_ostree
 
 - name: Edit copy of yum.conf to set obsoletes=0
   lineinfile:
@@ -146,7 +146,7 @@
     state: present
     regexp: '^obsoletes='
     line: 'obsoletes=0'
-  when: ansible_distribution in ["CentOS","RedHat","OracleLinux"] and not is_atomic
+  when: ansible_distribution in ["CentOS","RedHat","OracleLinux"] and not is_ostree
 
 - name: ensure docker packages are installed
   action: "{{ docker_package_info.pkg_mgr }}"
@@ -162,7 +162,7 @@
   delay: "{{ retry_stagger | d(3) }}"
   with_items: "{{ docker_package_info.pkgs }}"
   notify: restart docker
-  when: not (ansible_os_family in ["CoreOS", "Coreos", "Container Linux by CoreOS", "Flatcar", "Flatcar Container Linux by Kinvolk", "ClearLinux"] or is_atomic) and (docker_package_info.pkgs|length > 0)
+  when: not (ansible_os_family in ["CoreOS", "Coreos", "Container Linux by CoreOS", "Flatcar", "Flatcar Container Linux by Kinvolk", "ClearLinux"] or is_ostree) and (docker_package_info.pkgs|length > 0)
   ignore_errors: true
 
 - name: Ensure docker packages are installed

roles/container-engine/docker/tasks/pre-upgrade.yml

@@ -5,7 +5,7 @@
     state: absent
   when:
     - ansible_distribution in ["CentOS","RedHat","OracleLinux"]
-    - not is_atomic
+    - not is_ostree
 
 - name: Ensure old versions of Docker are not installed. | Debian
   apt:
@@ -22,4 +22,4 @@
   when:
     - ansible_os_family == 'RedHat'
     - (docker_versioned_pkg[docker_version | string] is search('docker-ce'))
-    - not is_atomic
+    - not is_ostree

roles/container-engine/docker/tasks/systemd.yml

@@ -15,7 +15,7 @@
   # noqa 303 - systemctl is called intentionally here
   shell: systemctl --version | head -n 1 | cut -d " " -f 2
   register: systemd_version
-  when: not is_atomic
+  when: not is_ostree
   changed_when: false
 
 - name: Write docker.service systemd file
@@ -24,7 +24,7 @@
     dest: /etc/systemd/system/docker.service
   register: docker_service_file
   notify: restart docker
-  when: not (ansible_os_family in ["CoreOS", "Coreos", "Container Linux by CoreOS", "Flatcar", "Flatcar Container Linux by Kinvolk"] or is_atomic)
+  when: not (ansible_os_family in ["CoreOS", "Coreos", "Container Linux by CoreOS", "Flatcar", "Flatcar Container Linux by Kinvolk"] or is_ostree)
 
 - name: Write docker options systemd drop-in
   template: