大家都知道OpenStack的手工安裝是一個(gè)難題，組件眾多，非常麻煩，一裝就要好幾天。讓很多初學(xué)者望而止步。

最近有很多紅帽的學(xué)員問(wèn)我，有沒(méi)有能在RedHat或Centos上快速安裝OpenStack的方法，這個(gè)當(dāng)然有，而且超級(jí)簡(jiǎn)單，準(zhǔn)備好環(huán)境后只需要四步就可以搞定。那今天就讓我把這個(gè)大招教給的大家。這個(gè)大招就是使用RDO快速部署OpenStack。

官宣一下，RDO項(xiàng)目的原理是整合上游的OpenStack版本，然后根據(jù)紅帽的系統(tǒng)做裁剪和定制，幫助用戶進(jìn)行選擇，對(duì)用戶來(lái)說(shuō)，就是簡(jiǎn)單的幾步，完成了OpenStack的部署。

好了，現(xiàn)在讓我們開(kāi)始實(shí)踐吧。先簡(jiǎn)單準(zhǔn)備下環(huán)境。

前提一：操作系統(tǒng)是必須有的，無(wú)論是RHEL還是CENTOS都行，大家要把系統(tǒng)安裝好，步驟我就不贅述了。不會(huì)裝的，可以網(wǎng)上查一下。安裝好系統(tǒng)好設(shè)置好靜態(tài)IP，并且保證能與公網(wǎng)通信。

前提二：關(guān)閉selinux

# sed -i 's#SELINUX=enforcing#SELINUX=disabled#g' /etc/sysconfig/selinux

# setenforce 0

前提三：關(guān)閉防火墻

systemctl stop firewalld.service

systemctl disable firewalld.service

現(xiàn)在開(kāi)始正式安裝過(guò)程，四步大法開(kāi)始了

 1、sudo yum install -y https://www.rdoproject.org/repos/rdo-release.rpm

 2、sudo yum update -y

 3、sudo yum install -y openstack-packstack

 4、sudo packstack --allinone

就只需要這四步，所有過(guò)程都是自動(dòng)化完成，只需要等待，一般情況下，一兩個(gè)小時(shí)就可以完成了。

補(bǔ)充說(shuō)明一下，安裝完成后，會(huì)出現(xiàn)以下的文字

**** Installation completed successfully ******
 Additional information:
 * Parameter CONFIG_NEUTRON_L2_AGENT: You have chosen OVN Neutron backend. Note that this backend does not support the VPNaaS or FWaaS services. Geneve will be used as the encapsulation method for tenant networks
 * A new answerfile was created in: /root/packstack-answers-20200407-090120.txt
 * Time synchronization installation was skipped. Please note that unsynchronized time on server instances might be problem for some OpenStack components.
 * Warning: NetworkManager is active on 10.20.0.62. OpenStack networking currently does not work on systems that have the Network Manager service enabled.
 * File /root/keystonerc_admin has been created on OpenStack client host 10.20.0.62. To use the command line tools you need to source the file.
 * To access the OpenStack Dashboard browse to http://10.20.0.62/dashboard .
 Please, find your login credentials stored in the keystonerc_admin in your home directory.
 * Because of the kernel update the host 10.20.0.62 requires reboot.
 * The installation log file is available at: /var/tmp/packstack/20200407-090119-fSAgKM/openstack-setup.log
 * The generated manifests are available at: /var/tmp/packstack/20200407-090119-fSAgKM/manifests
 
  

 注意加紅字，其中http://10.20.0.62/dashboard代表的是OpenStack的登錄地址，其中/root/keystonerc_admin將放著登錄用戶名和密碼

現(xiàn)在我們可以輸入用戶名和密碼登錄了