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-rw-r--r--swift/etc/ntp.conf20
1 files changed, 20 insertions, 0 deletions
diff --git a/swift/etc/ntp.conf b/swift/etc/ntp.conf
index 617a41c9..b50886a4 100644
--- a/swift/etc/ntp.conf
+++ b/swift/etc/ntp.conf
@@ -1 +1,21 @@
+{% if SWIFT_CONTROLLER is undefined or SWIFT_CONTROLLER == "False" %}
server {{ CONTROLLER_HOST_ADDRESS }} iburst
+{% else %}
+# We use iburst here to reduce the potential initial delay to set the clock
+server 0.pool.ntp.org iburst
+server 1.pool.ntp.org iburst
+server 2.pool.ntp.org iburst
+server 3.pool.ntp.org iburst
+
+# kod - notify client when packets are denied service,
+# rather than just dropping the packets
+#
+# nomodify - deny queries which attempt to modify the state of the server
+#
+# notrap - decline to provide mode 6 control message trap service to
+# matching hosts
+#
+# see ntp.conf(5) for more details
+restrict -4 default kod notrap nomodify
+restrict -6 default kod notrap nomodify
+{% endif %}