Add docker role for Linux.

ansible/roles/docker/tasks/linux.yaml

@@ -0,0 +1,73 @@
+- name: Install packages
+  package:
+    name:
+      - docker
+    state: present
+
+- name: Create docker zfs dataset
+  when: docker_zfs_dataset is defined and docker_zvol_size is not defined
+  zfs:
+    name: "{{ docker_zfs_dataset }}"
+    state: present
+    extra_zfs_properties:
+      mountpoint: /var/lib/docker
+
+- name: Create docker zfs dataset for zvol
+  when: docker_zfs_dataset is defined and docker_zvol_size is defined
+  zfs:
+    name: "{{ docker_zfs_dataset }}"
+    state: present
+
+- name: Create docker zvol
+  when: docker_zfs_dataset is defined and docker_zvol_size is defined
+  zfs:
+    name: "{{ docker_zfs_dataset }}/ext4data"
+    state: present
+    extra_zfs_properties:
+      volsize: "{{ docker_zvol_size }}"
+
+- name: Create a ext4 filesystem for docker zvol
+  when: docker_zfs_dataset is defined and docker_zvol_size is defined
+  filesystem:
+    fstype: ext4
+    resizefs: true
+    dev: "/dev/zvol/{{ docker_zfs_dataset }}/ext4data"
+
+- name: Mount docker zvol
+  when: docker_zfs_dataset is defined and docker_zvol_size is defined
+  mount:
+    path: /var/lib/docker
+    src: "/dev/zvol/{{ docker_zfs_dataset }}/ext4data"
+    fstype: ext4
+    state: mounted
+    opts: "noatime,data=writeback,barrier=0,nobh,errors=remount-ro"
+
+- name: Create directories
+  when: docker_storage_driver is defined
+  file:
+    name: "{{ item }}"
+    state: directory
+    mode: 0700
+    owner: root
+    group: root
+  loop:
+    - /etc/docker
+
+- name: Install configuration
+  when: docker_storage_driver is defined
+  template:
+    src: "templates/{{ item.src }}.j2"
+    dest: "{{ item.dest }}"
+    mode: 0644
+    owner: root
+    group: root
+  loop:
+    - src: daemon.json
+      dest: /etc/docker/daemon.json
+
+- name: Start docker socket
+  systemd:
+    state: started
+    name: docker.socket
+    daemon_reload: yes
+    enabled: yes