From 3449d6ee718ab8597ff987b04abbf1e80ae183d7 Mon Sep 17 00:00:00 2001
From: "Daniel A. Maierhofer" <git@damadmai.at>
Date: Mon, 8 Oct 2018 17:53:15 +0200
Subject: [PATCH] Add NTP server config

---
 defaults/main.yml        |  4 ++++
 handlers/main.yml        |  4 ++--
 tasks/ntp.yml            | 12 ++++++++++++
 templates/chrony.conf.j2 | 34 ++++++++++++++++++++++++++++++++++
 4 files changed, 52 insertions(+), 2 deletions(-)
 create mode 100644 templates/chrony.conf.j2

diff --git a/defaults/main.yml b/defaults/main.yml
index 4cbad28..fe4e22d 100644
--- a/defaults/main.yml
+++ b/defaults/main.yml
@@ -18,6 +18,10 @@ common_locales: []
 common_locales_default:
 
 common_ntp: True
+common_ntp_servers:
+  - tutimea.tuwien.ac.at
+  - tutimeb.tuwien.ac.at
+  - tutimec.tuwien.ac.at
 
 common_resolvconf: True
 common_resolvconf_remove_resolvconf: True
diff --git a/handlers/main.yml b/handlers/main.yml
index 6513912..865e324 100644
--- a/handlers/main.yml
+++ b/handlers/main.yml
@@ -1,7 +1,7 @@
 ---
 
-- name: restart ntp
-  service: name=ntp state=restarted
+- name: restart chrony
+  service: name=chrony state=restarted
 
 - name: restart rsyslog
   service: name=rsyslog state=restarted
diff --git a/tasks/ntp.yml b/tasks/ntp.yml
index ff19fb2..3f5ded4 100644
--- a/tasks/ntp.yml
+++ b/tasks/ntp.yml
@@ -9,3 +9,15 @@
 
 - name: ntp - set timezone
   file: src=/usr/share/zoneinfo/Europe/Vienna dest=/etc/localtime state=link
+
+- name: ntp - set servers for debian
+  template: "dest=/etc/chrony/chrony.conf src={{ chrony.conf.j2 }} owner=root group=root mode=0644"
+  when: (ansible_virtualization_type != 'lxc' or ansible_virtualization_role == 'host') and ansible_os_family == "Debian"
+  notify:
+    restart chrony
+
+- name: ntp - set servers for void
+  template: "dest=/etc/chrony.conf src={{ chrony.conf.j2 }} owner=root group=root mode=0644"
+  when: (ansible_virtualization_type != 'lxc' or ansible_virtualization_role == 'host') and ansible_os_family != "Debian"
+  notify:
+    restart chrony
diff --git a/templates/chrony.conf.j2 b/templates/chrony.conf.j2
new file mode 100644
index 0000000..1b1a9eb
--- /dev/null
+++ b/templates/chrony.conf.j2
@@ -0,0 +1,34 @@
+# Welcome to the chrony configuration file. See chrony.conf(5) for more
+# information about usuable directives.
+{% for server in common_ntp_servers %}
+server {{ server }} iburst
+{% endfor %}
+
+# This directive specify the location of the file containing ID/key pairs for
+# NTP authentication.
+keyfile /etc/chrony/chrony.keys
+
+# This directive specify the file into which chronyd will store the rate
+# information.
+driftfile /var/lib/chrony/chrony.drift
+
+# Uncomment the following line to turn logging on.
+#log tracking measurements statistics
+
+# Log files location.
+logdir /var/log/chrony
+
+# Stop bad estimates upsetting machine clock.
+maxupdateskew 100.0
+
+# This directive tells 'chronyd' to parse the 'adjtime' file to find out if the
+# real-time clock keeps local time or UTC. It overrides the 'rtconutc' directive.
+hwclockfile /etc/adjtime
+
+# This directive enables kernel synchronisation (every 11 minutes) of the
+# real-time clock. Note that it can’t be used along with the 'rtcfile' directive.
+rtcsync
+
+# Step the system clock instead of slewing it if the adjustment is larger than
+# one second, but only in the first three clock updates.
+makestep 1 3