Add unattended_only_on_ac_power and install powermgmt-base (#76)

Co-authored-by: Samuel Mutel <[email protected]>

README.md

@@ -83,6 +83,8 @@ On some hosts you may find that the unattended-upgrade's cronfile `/etc/cron.dai
     * Default: `[]`
 * `unattended_dl_limit`: Limit the download speed in kb/sec using apt bandwidth limit feature.
     * Default: disabled
+* `unattended_only_on_ac_power`: Download and install upgrades only on AC power. It will also install the debian package `powermgmt-base`.
+    * Default: false
 
 ## Origins Patterns
 

defaults/main.yml

@@ -135,3 +135,8 @@ unattended_dpkg_options: []
 
 # Use apt bandwidth limit feature, this example limits the download speed to 70kb/sec
 #unattended_dl_limit: 70
+
+# Unattended-Upgrade::OnlyOnACPower
+# Download and install upgrades only on AC power
+# (i.e. skip or gracefully stop updates on battery)
+unattended_only_on_ac_power: false

tasks/unattended-upgrades.yml

@@ -6,6 +6,14 @@
   include_vars: "{{ ansible_distribution }}-{{ ansible_distribution_release }}.yml"
   when: (ansible_distribution == "Debian") and (ansible_distribution_release == "wheezy")
 
+- name: install powermgmt-base
+  apt:
+    pkg:
+    state: present
+    cache_valid_time: "{{ unattended_cache_valid_time }}"
+    update_cache: yes
+  when: unattended_only_on_ac_power
+
 - name: install unattended-upgrades
   apt:
     pkg: unattended-upgrades

templates/unattended-upgrades.j2

@@ -121,3 +121,7 @@ Dpkg::Options {
 // speed to 70kb/sec
 Acquire::http::Dl-Limit "{{ unattended_dl_limit }}";
 {% endif %}
+
+// Download and install upgrades only on AC power
+// (i.e. skip or gracefully stop updates on battery)
+Unattended-Upgrade::OnlyOnACPower "{{ unattended_only_on_ac_power }}";