diff -Nrup a/nss/nsswitch.conf b/nss/nsswitch.conf

--- a/nss/nsswitch.conf	2019-10-25 12:14:09.255834866 -0400

+++ b/nss/nsswitch.conf	2019-10-25 12:50:08.425769248 -0400

@@ -1,7 +1,7 @@

 #

 # /etc/nsswitch.conf

 #

-# An example Name Service Switch config file. This file should be

+# Name Service Switch config file. This file should be

 # sorted with the most-used services at the beginning.

 #

 # Valid databases are: aliases, ethers, group, gshadow, hosts,

@@ -52,18 +52,20 @@

 # shadow:    db files

 # group:     db files

-# In alphabetical order. Re-order as required to optimize peformance.

+# In order of likelihood of use to accelerate lookup.

+passwd:     sss files

+shadow:     files sss

+group:      sss files

+hosts:      files dns myhostname

+services:   files sss

+netgroup:   sss

+automount:  files sss

+

 aliases:    files

 ethers:     files

-group:      files

 gshadow:    files

-hosts:      files dns

 initgroups: files

-netgroup:   files

 networks:   files dns

-passwd:     files

 protocols:  files

 publickey:  files

 rpc:        files

-shadow:     files

-services:   files