diff --git a/README.rst b/README.rst
index 539b6d2..1f1c8f4 100644
--- a/README.rst
+++ b/README.rst
@@ -78,3 +78,19 @@
                 # Enabling 7 VFs on eth4 PF
                 echo 7 > /sys/class/net/eth4/device/sriov_numvfs; sleep 2; ip link set eth4 up
                 exit 0
+
+
+Nagios Monitoring
+=================
+
+Configure Hosts dynamically
+---------------------------
+
+The nagios formula looks up grains.items throught Salt mines to discover hosts.
+There are two different parameters that tell the nagios formula how to determine
+the hosts' IP address:
+
+- nagios_monitoring_network: IP subnet(s) in CIDR notation (can be a list)
+- nagios_monitoring_interface: interface name(s). Default ['eth0', 'ens3'].
+
+'nagios_monitoring_network' parameter takes precedence over 'nagios_monitoring_interface' list.
diff --git a/nagios/server/init.yml b/nagios/server/init.yml
index e495915..24dea22 100644
--- a/nagios/server/init.yml
+++ b/nagios/server/init.yml
@@ -3,6 +3,10 @@
     nagios_notification_email: root@localhost
     nagios_host_dimension_key: nagios_host
     nagios_default_host_alarm_clusters: 00-clusters
+    nagios_monitoring_network: []
+    nagios_monitoring_interface:
+    - eth0
+    - ens3
   nagios :
     server:
       enabled: true
@@ -63,10 +67,8 @@
           - target: 'G@services:openssh'
             contact_groups: Operator
             use: generic_host_tpl
-            interface:
-            - eth0
-            - ens3
-            - p4p1.602
+            interface: ${_param:nagios_monitoring_interface}
+            network: ${_param:nagios_monitoring_network}
         services:
           - target: 'G@roles:openssh.server'
             name: SSH