Enable NTP collector for prometheus node exporter

[chef.git] / cookbooks / ntp / templates / default / chrony.conf.erb

diff --git a/cookbooks/ntp/templates/default/chrony.conf.erb b/cookbooks/ntp/templates/default/chrony.conf.erb
index 2c4cfc4bd7037d8f3d583ca979c4b35064b00109..03728fddb8c60d3b754555c81240ea87c38b5768 100644 (file)
--- a/cookbooks/ntp/templates/default/chrony.conf.erb
+++ b/cookbooks/ntp/templates/default/chrony.conf.erb
@@ -4,6 +4,17 @@
 <% node[:ntp][:servers].each do |server| -%>
 pool <%= server %> iburst
 <% end -%>
+# Add additional non-pool NTP servers
+# pool.ntp.org can sometimes be aggressive with KoD
+pool time.cloudflare.com iburst
+pool time.google.com iburst
+
+# Allow local queries for monitoring
+allow 127.0.0.1/32
+allow ::1/128
+
+# Run an initial NTP sync on daemon startup
+initstepslew 30 time.cloudflare.com time.google.com <%= node[:ntp][:servers].join(" ") %>
 
 # This directive specify the location of the file containing ID/key pairs for
 # NTP authentication.
@@ -26,6 +37,18 @@ maxupdateskew 100.0
 # real-time clock. Note that it can’t be used along with the 'rtcfile' directive.
 rtcsync
 
+<% if node[:virtualization][:role] == "guest" -%>
+# Allow anytime step on VM guests
+makestep 1 -1
+<% else -%>
 # 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
+<% end -%>
+
+# Enable leap second slew
+leapsecmode slew
+maxslewrate 1000
+
+# Enable hardware timestamps if available
+hwtimestamp *