diff --git a/roles/nagios_server/templates/nagios/hosts/rdu3-hosts.cfg.j2 b/roles/nagios_server/templates/nagios/hosts/rdu3-hosts.cfg.j2
index 129dcf467c..ed724c7a80 100644
--- a/roles/nagios_server/templates/nagios/hosts/rdu3-hosts.cfg.j2
+++ b/roles/nagios_server/templates/nagios/hosts/rdu3-hosts.cfg.j2
@@ -1,5 +1,5 @@
 {% for host in groups['all']|sort %}
-{% if hostvars[host].datacenter == 'rdu3' or if hostvars[host].datacenter == 'rdu3-iso' and hostvars[host].nagios_Can_Connect == true %}
+{% if hostvars[host].datacenter.startswith('rdu3') and hostvars[host].nagios_Can_Connect == true %}
 define host {
 {% if hostvars[host].nagios_Check_Services['nrpe'] == true %}
    use                     defaulttemplate