diff --git a/docs/user/alerting/alerting-production-considerations.asciidoc b/docs/user/alerting/alerting-production-considerations.asciidoc
index 3a68e81879e24..cc7adc87b150e 100644
--- a/docs/user/alerting/alerting-production-considerations.asciidoc
+++ b/docs/user/alerting/alerting-production-considerations.asciidoc
@@ -27,4 +27,9 @@ Because by default tasks are polled at 3 second intervals and only 10 tasks can
 
 For details on the settings that can influence the performance and throughput of Task Manager, see {task-manager-settings}.
 
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+==============================================
+
+[float]
+=== Deployment considerations
+
+{es} and {kib} instances use the system clock to determine the current time. To ensure schedules are triggered when expected, you should synchronize the clocks of all nodes in the cluster using a time service such as http://www.ntp.org/[Network Time Protocol].
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