1 installing the Rocky release on all nodes.

yum install centos-release-openstack-rocky

安装之后，会在/etc/yum.repos.d/下产生CentOS-OpenStack-rocky.repo，CentOS-Ceph-Luminous.repo，CentOS-QEMU-EV.repo，CentOS-Storage-common.repo这4个yum源，由于centos官方已经无rocky版本的安装包了，建议修改成阿里云完成之后的安装，主要修改CentOS-OpenStack-rocky.repo及CentOS-Ceph-Luminous.repo就可以了。

cat CentOS-OpenStack-rocky.repo (黑色体为修改成阿里云地址)

# CentOS-OpenStack-rocky.repo

#

# Please see http://wiki.centos.org/SpecialInterestGroup/Cloud for more

# information

[centos-openstack-rocky]

name=CentOS-7 - OpenStack rocky

baseurl=https://mirrors.aliyun.com/centos/7/cloud/x86_64/openstack-rocky/

#baseurl=http://mirror.centos.org/$contentdir/$releasever/cloud/$basearch/openstack-rocky/

gpgcheck=0

enabled=1

gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-SIG-Cloud

exclude=sip,PyQt4

[centos-openstack-rocky-test]

name=CentOS-7 - OpenStack rocky Testing

baseurl=https://buildlogs.centos.org/centos/7/cloud/$basearch/openstack-rocky/

gpgcheck=0

enabled=0

exclude=sip,PyQt4

[centos-openstack-rocky-debuginfo]

name=CentOS-7 - OpenStack rocky - Debug

baseurl=http://debuginfo.centos.org/centos/7/cloud/$basearch/

gpgcheck=1

enabled=0

gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-SIG-Cloud

exclude=sip,PyQt4

[centos-openstack-rocky-source]

name=CentOS-7 - OpenStack rocky - Source

baseurl=http://vault.centos.org/centos/7/cloud/Source/openstack-rocky/

gpgcheck=1

enabled=0

gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-SIG-Cloud

exclude=sip,PyQt4

[rdo-trunk-rocky-tested]

name=OpenStack rocky Trunk Tested

baseurl=https://trunk.rdoproject.org/centos7-rocky/current-passed-ci/

gpgcheck=0

enabled=0

cat CentOS-Ceph-Luminous.repo (黑色体为修改成阿里云地址)

# CentOS-Ceph-Luminous.repo

#

# Please see http://wiki.centos.org/SpecialInterestGroup/Storage for more

# information

[centos-ceph-luminous]

name=CentOS-$releasever - Ceph Luminous

baseurl=https://mirrors.aliyun.com/ceph/rpm-luminous/el7/x86_64/

#baseurl=http://mirror.centos.org/$contentdir/$releasever/storage/$basearch/ceph-luminous/

gpgcheck=0

enabled=1

gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-SIG-Storage

[centos-ceph-luminous-test]

name=CentOS-$releasever - Ceph Luminous Testing

baseurl=http://buildlogs.centos.org/centos/$releasever/storage/$basearch/ceph-luminous/

gpgcheck=0

enabled=0

gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-SIG-Storage

[centos-ceph-luminous-source]

name=CentOS-$releasever - Ceph Luminous Source

baseurl=http://vault.centos.org/$contentdir/$releasever/storage/Source/ceph-luminous/

gpgcheck=0

enabled=0

gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-SIG-Storage

必要的时候，重新制作yum cache

yum clean all

yum repolist

2 Upgrade the packages on all nodes:

yum upgrade

3 Install the OpenStack client:

yum install python-openstackclient

4 Install the openstack-selinux package to automatically manage security policies for OpenStack services:

yum install openstack-selinux