2. 패키지 설치가 완료되면 yum upgrade 명령어를 이용해 시스템을 업그레이드합니다.

[root@controller ~]# yum upgrade
Loaded plugins: fastestmirror
centos-ceph-hammer                                            | 2.9 kB  00:00:00

…
Loading mirror speeds from cached hostfile
 * base: mirror.navercorp.com
 * extras: mirror.navercorp.com
 * updates: mirror.navercorp.com
…

Transaction Summary

Install 3 Packages (+7 Dependent packages) Upgrade 259 Packages

Total download size: 289 M Is this ok [y/d/N]: y … Fingerprint: 736a f511 6d9c 40e2 af6b 074b f9b9 fee7 7644 29e6 Package : centos-release-openstack-mitaka-1-2.el7.centos.noarch (@extras) From : /etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-SIG-Cloud Is this ok [y/N]: y … Replaced: python-setuptools.noarch 0:0.9.8-3.el7

Complete!