Why does authconfig fail several times before succeeding in Red Hat Enterprise Linux 7.0?

Issue

• Why does authconfig fail several times before succeeding in Red Hat Enterprise Linux 7.0?
• See the terminal output below.

[root@rhel7-server ~]# authconfig --kickstart  --enablecache --enablenis --nisdomain eng.example.com --nostart --enablekrb5 --krb5realm eng.example.com --krb5kdc kdc1-crd.eng.example.com,kdc2-crd.eng.example.com --krb5adminserver kerberos.eng.example.com
[Errno 2] No such file or directory
Exception OSError: (2, 'No such file or directory', '/var/lib/authconfig/last/nsswitch.confMNM4nj') in <bound method _TemporaryFileWrapper.__del__ of <closed file '<fdopen>', mode 'w+b' at 0x1fdbae0>> ignored
Exception OSError: (2, 'No such file or directory', '/var/lib/authconfig/last/system-auth-acOCIW7Y') in <bound method _TemporaryFileWrapper.__del__ of <closed file '<fdopen>', mode 'w+b' at 0x1fdbb70>> ignored
Exception OSError: (2, 'No such file or directory', '/var/lib/authconfig/last/postlogin-acee0YMS') in <bound method _TemporaryFileWrapper.__del__ of <closed file '<fdopen>', mode 'w+b' at 0x1fdbc90>> ignored

[root@rhel7-server ~]# authconfig --kickstart  --enablecache --enablenis --nisdomain eng.example.com --nostart --enablekrb5 --krb5realm eng.example.com --krb5kdc kdc1-crd.eng.example.com,kdc2-crd.eng.example.com --krb5adminserver kerberos.eng.example.com
[Errno 2] No such file or directory
Exception OSError: (2, 'No such file or directory', '/var/lib/authconfig/last/system-auth-aczJ4_Gb') in <bound method _TemporaryFileWrapper.__del__ of <closed file '<fdopen>', mode 'w+b' at 0x1861ae0>> ignored
Exception OSError: (2, 'No such file or directory', '/var/lib/authconfig/last/postlogin-acU4CS2R') in <bound method _TemporaryFileWrapper.__del__ of <closed file '<fdopen>', mode 'w+b' at 0x1861b70>> ignored
Exception OSError: (2, 'No such file or directory', '/var/lib/authconfig/last/password-auth-ac6C7m0p') in <bound method _TemporaryFileWrapper.__del__ of <closed file '<fdopen>', mode 'w+b' at 0x1861c90>> ignored

[root@rhel7-server ~]# authconfig --kickstart  --enablecache --enablenis --nisdomain eng.example.com --nostart --enablekrb5 --krb5realm eng.example.com --krb5kdc kdc1-crd.eng.example.com,kdc2-crd.eng.example.com --krb5adminserver kerberos.eng.example.com
[Errno 2] No such file or directory
Exception OSError: (2, 'No such file or directory', '/var/lib/authconfig/last/system-auth-acW5ucjh') in <bound method _TemporaryFileWrapper.__del__ of <closed file '<fdopen>', mode 'w+b' at 0x9e9ae0>> ignored
Exception OSError: (2, 'No such file or directory', '/var/lib/authconfig/last/postlogin-acEsON9A') in <bound method _TemporaryFileWrapper.__del__ of <closed file '<fdopen>', mode 'w+b' at 0x9e9b70>> ignored
Exception OSError: (2, 'No such file or directory', '/var/lib/authconfig/last/password-auth-ac5XB0pP') in <bound method _TemporaryFileWrapper.__del__ of <closed file '<fdopen>', mode 'w+b' at 0x9e9c90>> ignored
Exception OSError: (2, 'No such file or directory', '/var/lib/authconfig/last/fingerprint-auth-acnrDB0_') in <bound method _TemporaryFileWrapper.__del__ of <closed file '<fdopen>', mode 'w+b' at 0x9e9db0>> ignored

[root@rhel7-server ~]# authconfig --kickstart  --enablecache --enablenis --nisdomain eng.example.com --nostart --enablekrb5 --krb5realm eng.example.com --krb5kdc kdc1-crd.eng.example.com,kdc2-crd.eng.example.com --krb5adminserver kerberos.eng.example.com
Exception OSError: (2, 'No such file or directory', '/var/lib/authconfig/last/system-auth-acFoZFot') in <bound method _TemporaryFileWrapper.__del__ of <closed file '<fdopen>', mode 'w+b' at 0x116fae0>> ignored
Exception OSError: (2, 'No such file or directory', '/var/lib/authconfig/last/postlogin-ac_3nK8E') in <bound method _TemporaryFileWrapper.__del__ of <closed file '<fdopen>', mode 'w+b' at 0x116fb70>> ignored
Exception OSError: (2, 'No such file or directory', '/var/lib/authconfig/last/password-auth-acYcy6pB') in <bound method _TemporaryFileWrapper.__del__ of <closed file '<fdopen>', mode 'w+b' at 0x116fc90>> ignored
Exception OSError: (2, 'No such file or directory', '/var/lib/authconfig/last/fingerprint-auth-acBslV9S') in <bound method _TemporaryFileWrapper.__del__ of <closed file '<fdopen>', mode 'w+b' at 0x116fdb0>> ignored
Exception OSError: (2, 'No such file or directory', '/var/lib/authconfig/last/smartcard-auth-acmNQbBw') in <bound method _TemporaryFileWrapper.__del__ of <closed file '<fdopen>', mode 'w+b' at 0x116fed0>> ignored

[root@rhel7-server ~]# authconfig --kickstart  --enablecache --enablenis --nisdomain eng.example.com --nostart --enablekrb5 --krb5realm eng.example.com --krb5kdc kdc1-crd.eng.example.com,kdc2-crd.eng.example.com --krb5adminserver kerberos.eng.example.com

[root@rhel7-server ~]# authconfig --kickstart  --enablecache --enablenis --nisdomain eng.example.com --nostart --enablekrb5 --krb5realm eng.example.com --krb5kdc kdc1-crd.eng.example.com,kdc2-crd.eng.example.com --krb5adminserver kerberos.eng.example.com

[root@rhel7-server ~]#