Add missing assign statement

global-templates/services.conf

@@ -82,6 +82,8 @@ apply Service "icinga CA certificate" {
   vars.ssl_cert_file = "/var/lib/icinga2/certs/ca.crt"
   vars.ssl_cert_warn = 396
   vars.ssl_cert_critical = 376
+
+  assign where host.name == NodeName
 }
 
 apply Service "kernel-status" {