From 559e51d94ceb081c56e9f0560eb6ba32ecb7ca2f Mon Sep 17 00:00:00 2001
From: Christian Pointner <equinox@spreadspace.org>
Date: Fri, 23 Oct 2020 01:16:06 +0200
Subject: split docker role into apt-repo and engine

---
 roles/docker/engine/tasks/lvm.yml  | 18 +++++++++++++++
 roles/docker/engine/tasks/main.yml | 46 ++++++++++++++++++++++++++++++++++++++
 roles/docker/engine/tasks/zfs.yml  | 14 ++++++++++++
 3 files changed, 78 insertions(+)
 create mode 100644 roles/docker/engine/tasks/lvm.yml
 create mode 100644 roles/docker/engine/tasks/main.yml
 create mode 100644 roles/docker/engine/tasks/zfs.yml

(limited to 'roles/docker/engine/tasks')

diff --git a/roles/docker/engine/tasks/lvm.yml b/roles/docker/engine/tasks/lvm.yml
new file mode 100644
index 00000000..34cbab0f
--- /dev/null
+++ b/roles/docker/engine/tasks/lvm.yml
@@ -0,0 +1,18 @@
+---
+- name: create logical volume
+  lvol:
+    vg: "{{ docker_lvm.vg }}"
+    lv: "{{ docker_lvm.lv }}"
+    size: "{{ docker_lvm.size }}"
+
+- name: create filesystem
+  filesystem:
+    fstype: "{{ docker_lvm.fs }}"
+    dev: "/dev/mapper/{{ docker_lvm.vg | replace('-', '--') }}-{{ docker_lvm.lv | replace('-', '--') }}"
+
+- name: mount filesytem
+  mount:
+    src: "/dev/mapper/{{ docker_lvm.vg | replace('-', '--') }}-{{ docker_lvm.lv | replace('-', '--') }}"
+    path: /var/lib/docker
+    fstype: "{{ docker_lvm.fs }}"
+    state: mounted
diff --git a/roles/docker/engine/tasks/main.yml b/roles/docker/engine/tasks/main.yml
new file mode 100644
index 00000000..68a6504e
--- /dev/null
+++ b/roles/docker/engine/tasks/main.yml
@@ -0,0 +1,46 @@
+---
+- name: install docker daemon config
+  when: docker_daemon_config is defined
+  block:
+  - name: create docker config directory
+    file:
+      name: /etc/docker
+      state: directory
+      mode: 0700
+
+  - name: write docker daemon config
+    copy:
+      content: "{{ docker_daemon_config | to_nice_json }}\n"
+      dest: /etc/docker/daemon.json
+    notify: restart docker
+
+- name: prepare /var/lib/docker as LVM
+  when: docker_lvm is defined
+  import_tasks: lvm.yml
+
+- name: prepare /var/lib/docker as ZFS dataset
+  when: docker_zfs is defined
+  import_tasks: zfs.yml
+
+- name: prepare package provider
+  when: docker_pkg_provider != 'distro'
+  include_role:
+    name: "apt-repo/{{ docker_pkg_provider }}"
+
+- name: install docker
+  apt:
+    name: "{{ docker_pkg_name }}{% if docker_pkg_version is defined %}={{ docker_pkg_version }}{% endif %}"
+    state: present
+    force: yes
+
+- name: disable automatic upgrades for docker package
+  when: docker_pkg_version is defined
+  dpkg_selections:
+    name: "{{ docker_pkg_name }}"
+    selection: hold
+
+- name: start and enable docker
+  service:
+    name: docker
+    enabled: true
+    state: started
diff --git a/roles/docker/engine/tasks/zfs.yml b/roles/docker/engine/tasks/zfs.yml
new file mode 100644
index 00000000..e8289c7d
--- /dev/null
+++ b/roles/docker/engine/tasks/zfs.yml
@@ -0,0 +1,14 @@
+---
+- name: create zfs dataset
+  zfs:
+    name: "{{ docker_zfs.pool }}/{{ docker_zfs.name }}"
+    state: present
+    extra_zfs_properties: "{{ docker_zfs.properties | default(omit) }}"
+
+- name: bind mount filesytem
+  mount:
+    src: "{{ zfs_pools[docker_zfs.pool].mountpoint }}/{{ docker_zfs.name }}"
+    path: /var/lib/docker
+    fstype: none
+    opts: bind,x-systemd.automount,nofail
+    state: mounted
-- 
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