--- ./sample-config/nrpe.cfg.in	2020-04-23 15:33:18.000000000 -0500
+++ ./sample-config/nrpe.cfg.in.include_nrpe_d	2020-04-26 20:01:03.747481509 -0500
@@ -362,6 +362,8 @@ command[check_total_procs]=@pluginsdir@/
 #include_dir=<somedirectory>
 #include_dir=<someotherdirectory>
 
+include_dir=/etc/nrpe.d/
+
 # KEEP ENVIRONMENT VARIABLES
 # This directive allows you to retain specific variables from the environment
 # when starting the NRPE daemon.