From 0353887590b994cba0840db75c6baebeb0d3de10 Mon Sep 17 00:00:00 2001
From: Jake Howard <git@theorangeone.net>
Date: Mon, 21 Dec 2020 21:37:46 +0000
Subject: [PATCH] Add override to ensure ZFS starts before docker

Stolen with love from https://github.com/IronicBadger/infra/commit/7dda0bc7cbb9a38e17561c80f40f518b9f472ef7
---
 ansible/host_vars/intersect.yml                   |  2 ++
 ansible/host_vars/walker.yml                      |  1 +
 ansible/roles/docker_cleanup/defaults/main.yml    |  1 +
 .../roles/docker_cleanup/files/zfs-override.conf  |  3 +++
 ansible/roles/docker_cleanup/tasks/main.yml       |  4 ++++
 .../roles/docker_cleanup/tasks/zfs-override.yml   | 15 +++++++++++++++
 6 files changed, 26 insertions(+)
 create mode 100644 ansible/host_vars/walker.yml
 create mode 100644 ansible/roles/docker_cleanup/defaults/main.yml
 create mode 100644 ansible/roles/docker_cleanup/files/zfs-override.conf
 create mode 100644 ansible/roles/docker_cleanup/tasks/zfs-override.yml

diff --git a/ansible/host_vars/intersect.yml b/ansible/host_vars/intersect.yml
index e6b78d2..acaf580 100644
--- a/ansible/host_vars/intersect.yml
+++ b/ansible/host_vars/intersect.yml
@@ -1,3 +1,5 @@
 expose_ssh: true
 
 traefik_influx_db_dir: /mnt/tank/dbs/influx/traefik
+
+docker_zfs_override: true
diff --git a/ansible/host_vars/walker.yml b/ansible/host_vars/walker.yml
new file mode 100644
index 0000000..e960475
--- /dev/null
+++ b/ansible/host_vars/walker.yml
@@ -0,0 +1 @@
+docker_zfs_override: true
diff --git a/ansible/roles/docker_cleanup/defaults/main.yml b/ansible/roles/docker_cleanup/defaults/main.yml
new file mode 100644
index 0000000..acf631b
--- /dev/null
+++ b/ansible/roles/docker_cleanup/defaults/main.yml
@@ -0,0 +1 @@
+docker_zfs_override: false
diff --git a/ansible/roles/docker_cleanup/files/zfs-override.conf b/ansible/roles/docker_cleanup/files/zfs-override.conf
new file mode 100644
index 0000000..19d01b6
--- /dev/null
+++ b/ansible/roles/docker_cleanup/files/zfs-override.conf
@@ -0,0 +1,3 @@
+[Unit]
+Requires=zfs.target
+After=zfs.target
diff --git a/ansible/roles/docker_cleanup/tasks/main.yml b/ansible/roles/docker_cleanup/tasks/main.yml
index d84b8c3..6153783 100644
--- a/ansible/roles/docker_cleanup/tasks/main.yml
+++ b/ansible/roles/docker_cleanup/tasks/main.yml
@@ -44,3 +44,7 @@
     dest: "{{ home }}"
     mode: 0755
     directory_mode: 0755
+
+- name: override docker service for zfs dependencies
+  include: zfs-override.yml
+  when: docker_zfs_override
diff --git a/ansible/roles/docker_cleanup/tasks/zfs-override.yml b/ansible/roles/docker_cleanup/tasks/zfs-override.yml
new file mode 100644
index 0000000..6921838
--- /dev/null
+++ b/ansible/roles/docker_cleanup/tasks/zfs-override.yml
@@ -0,0 +1,15 @@
+- name: Create dir for docker service ZFS override
+  file:
+    path: /etc/systemd/system/docker.service.d
+    state: directory
+    mode: "0755"
+  become: true
+
+- name: Create override.conf
+  copy:
+    src: files/zfs-override.conf
+    dest: /etc/systemd/system/docker.service.d/zfs-override.conf
+    owner: root
+    group: root
+    mode: "0644"
+  become: true