Implement ntp client spec with auto support for distro selection

Add a base NTP client configuration dictionary and allow Distro
specific changes to be merged.  Add a select client function which
implements logic to preferr installed clients over clients which
need to be installed.  Also allow distributions to override the
cloud-init defaults.

LP: #1749722

1 files changed, 38 insertions, 0 deletions

diff --git a/templates/chrony.conf.sles.tmpl b/templates/chrony.conf.sles.tmpl
new file mode 100644
index 00000000..a3d3e0ec
--- /dev/null
+++ b/templates/chrony.conf.sles.tmpl
@@ -0,0 +1,38 @@
+## template:jinja
+# Use public servers from the pool.ntp.org project.
+# Please consider joining the pool (http://www.pool.ntp.org/join.html).
+{% if pools %}# pools
+{% endif %}
+{% for pool in pools -%}
+pool {{pool}} iburst
+{% endfor %}
+{%- if servers %}# servers
+{% endif %}
+{% for server in servers -%}
+server {{server}} iburst
+{% endfor %}
+
+# Record the rate at which the system clock gains/losses time.
+driftfile /var/lib/chrony/drift
+
+# In first three updates step the system clock instead of slew
+# if the adjustment is larger than 1 second.
+makestep 1.0 3
+
+# Enable kernel synchronization of the real-time clock (RTC).
+rtcsync
+
+# Allow NTP client access from local network.
+#allow 192.168/16
+
+# Serve time even if not synchronized to any NTP server.
+#local stratum 10
+
+# Specify file containing keys for NTP authentication.
+#keyfile /etc/chrony.keys
+
+# Specify directory for log files.
+logdir /var/log/chrony
+
+# Select which information is logged.
+#log measurements statistics tracking