雲端計算管理平臺之OpenStack簡介及基礎環境搭建

1874發表於2020-10-27

  一、簡介

  什麼是openstack?它是幹嘛用的?

  簡單說openstack是雲端計算管理平臺,主要對雲環境中的虛擬機器做增刪查改;它能夠將多臺物理裝置的資源(cpu/記憶體等)整合成一個大的資源池,然後根據openstack提供的api介面向使用者提供使用;使用者可以根據openstack提供的資源池介面來啟動虛擬機器,管理虛擬機器;openstack 主要組成由控制節點和計算節點組成;其中控制節點由多個元件組成,每個元件都是以api的形式向外提供服務,這多個元件共同組成了控制節點,所以控制節點上執行了很多服務;計算節點通常是指提供物理硬體,用於啟動虛擬機器的物理裝置;

  二、架構

  提示:openstack主要把底層的多臺server的資源分為了三類,計算,網路和儲存;使用者可以通過openstack提供的web介面直接在openstack上啟動虛擬機器例項;

  三、openstack基礎環境準備

  本次實驗是以openstack R版為例,其中各伺服器角色如下

主機名 角色 ip地址
node01 控制節點 192.168.0.41/24
node02 資料庫伺服器 192.168.0.42/24
node03 計算節點 192.168.0.43/24

 

 

 

 

 

  

  1、各server上的基礎環境配置

    1)時間同步

[root@node01 ~]# grep server /etc/chrony.conf
# Use public servers from the pool.ntp.org project.
server time.test.org iburst
# Serve time even if not synchronized to any NTP server.
[root@node01 ~]# scp /etc/chrony.conf node02:/etc/
chrony.conf                                                                                 100% 1141   992.7KB/s   00:00    
[root@node01 ~]# scp /etc/chrony.conf node03:/etc/
chrony.conf                                                                                 100% 1141   663.6KB/s   00:00    
[root@node01 ~]# chronyc sources                  
210 Number of sources = 1
MS Name/IP address         Stratum Poll Reach LastRx Last sample               
===============================================================================
^* time.test.org                 3   6   377    40    -15us[  -86us] +/-   20ms
[root@node01 ~]# ssh node02 'chronyc sources'
210 Number of sources = 1
MS Name/IP address         Stratum Poll Reach LastRx Last sample               
===============================================================================
^* time.test.org                 3   6   377    49  -6552ns[  -15us] +/-   20ms
[root@node01 ~]# ssh node03 'chronyc sources' 
210 Number of sources = 1
MS Name/IP address         Stratum Poll Reach LastRx Last sample               
===============================================================================
^* time.test.org                 3   6   377    52    -30us[ -103us] +/-   20ms
[root@node01 ~]# 

    2)主機名解析

[root@node01 ~]# cat /etc/hosts
127.0.0.1   localhost localhost.localdomain localhost4 localhost4.localdomain4
::1         localhost localhost.localdomain localhost6 localhost6.localdomain6
192.168.0.99 time.test.org time-node
192.168.0.41 node01.test.org node01 controller 
192.168.0.42 node02.test.org node02
192.168.0.43 node03.test.org node03
192.168.0.44 node04.test.org node04
192.168.0.45 node05.test.org node05
192.168.0.46 node06.test.org node06
[root@node01 ~]# scp /etc/hosts node02:/etc/
hosts                                                                                       100%  423    29.5KB/s   00:00    
[root@node01 ~]# scp /etc/hosts node03:/etc/
hosts                                                                                       100%  423    46.5KB/s   00:00    
[root@node01 ~]# 

    3)關閉selinux、iptables和NetworkManager

[root@node01 ~]# sed -i 's@SELINUX=enforcing@SELINUX=disabled@g' /etc/selinux/config 
[root@node01 ~]# setenforce 0
[root@node01 ~]# getenforce 
Permissive
[root@node01 ~]# ssh node02 'sed -i 's@SELINUX=enforcing@SELINUX=disabled@g' /etc/selinux/config'
[root@node01 ~]# ssh node02 'setenforce 0 && getenforce'
Permissive
[root@node01 ~]# ssh node03 'sed -i 's@SELINUX=enforcing@SELINUX=disabled@g' /etc/selinux/config' 
[root@node01 ~]# ssh node03 'setenforce 0 && getenforce'                                          
Permissive
[root@node01 ~]# systemctl stop firewalld NetworkManager
[root@node01 ~]# systemctl disable firewalld NetworkManager    
Removed symlink /etc/systemd/system/multi-user.target.wants/NetworkManager.service.
Removed symlink /etc/systemd/system/dbus-org.freedesktop.NetworkManager.service.
Removed symlink /etc/systemd/system/dbus-org.freedesktop.nm-dispatcher.service.
[root@node01 ~]# ssh node02 'systemctl stop firewalld NetworkManager && systemctl disable firewalld NetworkManager'
Removed symlink /etc/systemd/system/multi-user.target.wants/NetworkManager.service.
Removed symlink /etc/systemd/system/dbus-org.freedesktop.NetworkManager.service.
Removed symlink /etc/systemd/system/dbus-org.freedesktop.nm-dispatcher.service.
[root@node01 ~]# ssh node03 'systemctl stop firewalld NetworkManager && systemctl disable firewalld NetworkManager' 
Removed symlink /etc/systemd/system/multi-user.target.wants/NetworkManager.service.
Removed symlink /etc/systemd/system/dbus-org.freedesktop.NetworkManager.service.
Removed symlink /etc/systemd/system/dbus-org.freedesktop.nm-dispatcher.service.
[root@node01 ~]# 

  提示:如果你的系統是最小化安裝,這裡還需要安裝一些基礎的包;yum install -y vim wget tree  lrzsz gcc gcc-c++ automake pcre pcre-devel zlib zlib-devel openssl openssl-devel iproute net-tools iotop  lsof  ntpdate telnet bridge-utils;

    4)各伺服器配置阿里雲的base倉庫和epel倉庫包

[root@node01 ~]# rm -rf /etc/yum.repos.d/*.repo
[root@node01 ~]# wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo
--2020-10-27 22:43:42--  http://mirrors.aliyun.com/repo/Centos-7.repo
Resolving mirrors.aliyun.com (mirrors.aliyun.com)... 118.116.3.238, 118.123.164.244, 118.123.164.119, ...
Connecting to mirrors.aliyun.com (mirrors.aliyun.com)|118.116.3.238|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 2523 (2.5K) [application/octet-stream]
Saving to: ‘/etc/yum.repos.d/CentOS-Base.repo’

100%[====================================================================================>] 2,523       --.-K/s   in 0s      

2020-10-27 22:43:42 (180 MB/s) - ‘/etc/yum.repos.d/CentOS-Base.repo’ saved [2523/2523]

[root@node01 ~]# wget -O /etc/yum.repos.d/epel.repo http://mirrors.aliyun.com/repo/epel-7.repo
--2020-10-27 22:43:51--  http://mirrors.aliyun.com/repo/epel-7.repo
Resolving mirrors.aliyun.com (mirrors.aliyun.com)... 118.116.3.248, 118.123.164.120, 125.64.102.239, ...
Connecting to mirrors.aliyun.com (mirrors.aliyun.com)|118.116.3.248|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 664 [application/octet-stream]
Saving to: ‘/etc/yum.repos.d/epel.repo’

100%[====================================================================================>] 664         --.-K/s   in 0s      

2020-10-27 22:43:51 (95.0 MB/s) - ‘/etc/yum.repos.d/epel.repo’ saved [664/664]

[root@node01 ~]# ll /etc/yum.repos.d/
total 8
drwxr-xr-x. 2 root root  219 Oct 27 22:42 bak
-rw-r--r--. 1 root root 2523 Jun 16  2018 CentOS-Base.repo
-rw-r--r--. 1 root root  664 May 11  2018 epel.repo
[root@node01 ~]# 

  提示:在node02和node03上都要做以上操作;

  2、在各節點上配置openstack R版的yum倉庫

[root@node01 ~]# yum install centos-release-openstack-rocky -y

  提示:以上操作會在/etc/yum.repos.d/目錄下生成很多repo檔案;

  驗證:檢視/etcyum.repos.d/目錄下是否多了很多repo檔案?

[root@node01 ~]# ll /etc/yum.repos.d/
total 56
drwxr-xr-x. 2 root root  219 Oct 27 22:42 bak
-rw-r--r--. 1 root root 2523 Jun 16  2018 CentOS-Base.repo
-rw-r--r--. 1 root root  850 Jul 31  2018 CentOS-Ceph-Luminous.repo
-rw-r--r--. 1 root root 1309 Apr  8  2020 CentOS-CR.repo
-rw-r--r--. 1 root root  649 Apr  8  2020 CentOS-Debuginfo.repo
-rw-r--r--. 1 root root  314 Apr  8  2020 CentOS-fasttrack.repo
-rw-r--r--. 1 root root  630 Apr  8  2020 CentOS-Media.repo
-rw-r--r--. 1 root root 1186 Aug 29  2018 CentOS-OpenStack-rocky.repo
-rw-r--r--. 1 root root  612 Feb  1  2019 CentOS-QEMU-EV.repo
-rw-r--r--. 1 root root 1331 Apr  8  2020 CentOS-Sources.repo
-rw-r--r--. 1 root root  353 Jul 31  2018 CentOS-Storage-common.repo
-rw-r--r--. 1 root root 7577 Apr  8  2020 CentOS-Vault.repo
-rw-r--r--. 1 root root  616 Apr  8  2020 CentOS-x86_64-kernel.repo
-rw-r--r--. 1 root root  664 May 11  2018 epel.repo
[root@node01 ~]# 

  提示:這裡面的repo檔案倉庫地址都是指向centos的官方倉庫,如果國內下載速度慢,可以把對應的地址指向阿里雲;

  把centos-openstack-rocky.repo地址指向阿里雲

  提示:這裡只需要改第一個就行,後面的倉庫都是禁用了的,不用更改;

  把node01上的centos-openstack-rocky.repo檔案複製給node02和node03

[root@node01 ~]# scp /etc/yum.repos.d/CentOS-OpenStack-rocky.repo node02:/etc/yum.repos.d/CentOS-OpenStack-rocky.repo
CentOS-OpenStack-rocky.repo                                                                 100% 1261   832.6KB/s   00:00    
[root@node01 ~]# scp /etc/yum.repos.d/CentOS-OpenStack-rocky.repo node03:/etc/yum.repos.d/CentOS-OpenStack-rocky.repo
CentOS-OpenStack-rocky.repo                                                                 100% 1261   387.4KB/s   00:00    
[root@node01 ~]# 

  提示:複製要在後兩個節點都裝了centos-release-openstack-rocky這個包以後,以免後續裝包覆蓋倉庫地址檔案;

  3、在各節點安裝python-openstackclient和openstack-selinux包

[root@node01 ~]# yum install -y python-openstackclient openstack-selinux 

  4、在node02上部署mariadb-server

  先檢視mariadb-server這個包是否來自openstack-rocky這個倉庫

  提示:如果能夠看到mariadb-server這個包來自centos-openstack-rocky這個倉庫,說明我們配置的倉庫沒有問題;這裡建議儘量使用openstacke-rocky倉庫中提供的包,如果其他倉庫提供的包可能存在不相容的問題;

  下載安裝mairadb-server

[root@node02 ~]# yum install mariadb-server -y
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
 * base: mirrors.aliyun.com
 * centos-qemu-ev: mirrors.aliyun.com
 * extras: mirrors.aliyun.com
 * updates: mirrors.aliyun.com
Resolving Dependencies
--> Running transaction check
---> Package mariadb-server.x86_64 3:10.1.20-2.el7 will be installed
--> Processing Dependency: mariadb-common(x86-64) = 3:10.1.20-2.el7 for package: 3:mariadb-server-10.1.20-2.el7.x86_64
--> Processing Dependency: mariadb-errmsg(x86-64) = 3:10.1.20-2.el7 for package: 3:mariadb-server-10.1.20-2.el7.x86_64
--> Processing Dependency: mysql(x86-64) for package: 3:mariadb-server-10.1.20-2.el7.x86_64
--> Processing Dependency: mysql-compat-client(x86-64) for package: 3:mariadb-server-10.1.20-2.el7.x86_64
--> Processing Dependency: perl(DBD::mysql) for package: 3:mariadb-server-10.1.20-2.el7.x86_64
--> Processing Dependency: perl(DBI) for package: 3:mariadb-server-10.1.20-2.el7.x86_64
--> Processing Dependency: perl(Data::Dumper) for package: 3:mariadb-server-10.1.20-2.el7.x86_64
--> Processing Dependency: rsync for package: 3:mariadb-server-10.1.20-2.el7.x86_64
--> Processing Dependency: socat for package: 3:mariadb-server-10.1.20-2.el7.x86_64
--> Running transaction check
---> Package mariadb.x86_64 3:10.1.20-2.el7 will be installed
--> Processing Dependency: mariadb-libs(x86-64) = 3:10.1.20-2.el7 for package: 3:mariadb-10.1.20-2.el7.x86_64
……省略部分內容……
Installed:
  mariadb-server.x86_64 3:10.1.20-2.el7                                                                                       

Dependency Installed:
  mariadb.x86_64 3:10.1.20-2.el7                                 mariadb-common.x86_64 3:10.1.20-2.el7                        
  mariadb-config.x86_64 3:10.1.20-2.el7                          mariadb-errmsg.x86_64 3:10.1.20-2.el7                        
  perl-Compress-Raw-Bzip2.x86_64 0:2.061-3.el7                   perl-Compress-Raw-Zlib.x86_64 1:2.061-4.el7                  
  perl-DBD-MySQL.x86_64 0:4.023-6.el7                            perl-DBI.x86_64 0:1.627-4.el7                                
  perl-Data-Dumper.x86_64 0:2.145-3.el7                          perl-IO-Compress.noarch 0:2.061-2.el7                        
  perl-Net-Daemon.noarch 0:0.48-5.el7                            perl-PlRPC.noarch 0:0.2020-14.el7                            
  rsync.x86_64 0:3.1.2-10.el7                                    socat.x86_64 0:1.7.3.2-2.el7                                 

Dependency Updated:
  mariadb-libs.x86_64 3:10.1.20-2.el7                                                                                         

Complete!
[root@node02 ~]# 

  配置資料庫

[root@node02 ~]# cat /etc/my.cnf.d/openstack.cnf 
[mysqld]
bind-address = 0.0.0.0

default-storage-engine = innodb
innodb_file_per_table = on
max_connections = 4096
collation-server = utf8_general_ci
character-set-server = utf8
[root@node02 ~]# 

  設定mariadb-server開機啟動,並啟動mairadb-server

[root@node02 ~]# systemctl enable mariadb.service 
Created symlink from /etc/systemd/system/multi-user.target.wants/mariadb.service to /usr/lib/systemd/system/mariadb.service.
[root@node02 ~]# systemctl start mariadb.service       
[root@node02 ~]# ss -tnl
State      Recv-Q Send-Q                  Local Address:Port                                 Peer Address:Port              
LISTEN     0      128                                 *:22                                              *:*                  
LISTEN     0      100                         127.0.0.1:25                                              *:*                  
LISTEN     0      128                                 *:3306                                            *:*                  
LISTEN     0      128                                :::22                                             :::*                  
LISTEN     0      100                               ::1:25                                             :::*                  
[root@node02 ~]# 

  5、在node01上安裝python2-PyMySQL包,用於控制節點連線資料庫驅動

[root@node01 ~]# yum install -y python2-PyMySQL
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
 * base: mirrors.aliyun.com
 * centos-qemu-ev: mirrors.aliyun.com
 * extras: mirrors.aliyun.com
 * updates: mirrors.aliyun.com
Resolving Dependencies
--> Running transaction check
---> Package python2-PyMySQL.noarch 0:0.9.3-1.el7 will be installed
--> Finished Dependency Resolution

Dependencies Resolved

==============================================================================================================================
 Package                            Arch                      Version                           Repository               Size
==============================================================================================================================
Installing:
 python2-PyMySQL                    noarch                    0.9.3-1.el7                       epel                     91 k

Transaction Summary
==============================================================================================================================
Install  1 Package

Total download size: 91 k
Installed size: 372 k
Downloading packages:
python2-PyMySQL-0.9.3-1.el7.noarch.rpm                                                                 |  91 kB  00:00:00     
Running transaction check
Running transaction test
Transaction test succeeded
Running transaction
  Installing : python2-PyMySQL-0.9.3-1.el7.noarch                                                                         1/1 
  Verifying  : python2-PyMySQL-0.9.3-1.el7.noarch                                                                         1/1 

Installed:
  python2-PyMySQL.noarch 0:0.9.3-1.el7                                                                                        

Complete!
[root@node01 ~]# 

  6、在node02上部署memcached

[root@node02 ~]# yum install memcached -y
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
 * base: mirrors.aliyun.com
 * centos-qemu-ev: mirrors.aliyun.com
 * extras: mirrors.aliyun.com
 * updates: mirrors.aliyun.com
Resolving Dependencies
--> Running transaction check
---> Package memcached.x86_64 0:1.5.6-1.el7 will be installed
--> Finished Dependency Resolution

Dependencies Resolved

==============================================================================================================================
 Package                   Arch                   Version                        Repository                              Size
==============================================================================================================================
Installing:
 memcached                 x86_64                 1.5.6-1.el7                    centos-openstack-rocky                 124 k

Transaction Summary
==============================================================================================================================
Install  1 Package

Total download size: 124 k
Installed size: 268 k
Downloading packages:
memcached-1.5.6-1.el7.x86_64.rpm                                                                       | 124 kB  00:00:00     
Running transaction check
Running transaction test
Transaction test succeeded
Running transaction
  Installing : memcached-1.5.6-1.el7.x86_64                                                                               1/1 
  Verifying  : memcached-1.5.6-1.el7.x86_64                                                                               1/1 

Installed:
  memcached.x86_64 0:1.5.6-1.el7                                                                                              

Complete!
[root@node02 ~]# 

  配置memcached

[root@node02 ~]# cat /etc/sysconfig/memcached
PORT="11211"
USER="memcached"
MAXCONN="4096"
CACHESIZE="1024"
OPTIONS="-l 0.0.0.0,::1"
[root@node02 ~]# 

  設定memcached開機啟動,並啟動memcached服務

[root@node02 ~]# systemctl enable memcached.service
Created symlink from /etc/systemd/system/multi-user.target.wants/memcached.service to /usr/lib/systemd/system/memcached.service.
[root@node02 ~]# systemctl start memcached.service 
[root@node02 ~]# ss -tnl
State      Recv-Q Send-Q                  Local Address:Port                                 Peer Address:Port              
LISTEN     0      128                                 *:11211                                           *:*                  
LISTEN     0      128                                 *:22                                              *:*                  
LISTEN     0      100                         127.0.0.1:25                                              *:*                  
LISTEN     0      128                                 *:3306                                            *:*                  
LISTEN     0      128                               ::1:11211                                          :::*                  
LISTEN     0      128                                :::22                                             :::*                  
LISTEN     0      100                               ::1:25                                             :::*                  
[root@node02 ~]# 

  7、在node01上安裝連線memcached驅動,python-memcached

[root@node01 ~]# yum install -y python-memcached
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
 * base: mirrors.aliyun.com
 * centos-qemu-ev: mirrors.aliyun.com
 * extras: mirrors.aliyun.com
 * updates: mirrors.aliyun.com
Resolving Dependencies
--> Running transaction check
---> Package python-memcached.noarch 0:1.58-1.el7 will be installed
--> Finished Dependency Resolution

Dependencies Resolved

==============================================================================================================================
 Package                         Arch                  Version                    Repository                             Size
==============================================================================================================================
Installing:
 python-memcached                noarch                1.58-1.el7                 centos-openstack-rocky                 38 k

Transaction Summary
==============================================================================================================================
Install  1 Package

Total download size: 38 k
Installed size: 123 k
Downloading packages:
python-memcached-1.58-1.el7.noarch.rpm                                                                 |  38 kB  00:00:00     
Running transaction check
Running transaction test
Transaction test succeeded
Running transaction
  Installing : python-memcached-1.58-1.el7.noarch                                                                         1/1 
  Verifying  : python-memcached-1.58-1.el7.noarch                                                                         1/1 

Installed:
  python-memcached.noarch 0:1.58-1.el7                                                                                        

Complete!
[root@node01 ~]# 

  8、在node02上部署rabbitmq-server

[root@node02 ~]# yum install rabbitmq-server -y
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
 * base: mirrors.aliyun.com
 * centos-qemu-ev: mirrors.aliyun.com
 * extras: mirrors.aliyun.com
 * updates: mirrors.aliyun.com
Resolving Dependencies
--> Running transaction check
---> Package rabbitmq-server.noarch 0:3.6.16-1.el7 will be installed
--> Processing Dependency: erlang-eldap >= 18 for package: rabbitmq-server-3.6.16-1.el7.noarch
--> Processing Dependency: erlang-erts >= 18 for package: rabbitmq-server-3.6.16-1.el7.noarch
--> Processing Dependency: erlang-kernel >= 18 for package: rabbitmq-server-3.6.16-1.el7.noarch
--> Processing Dependency: erlang-mnesia >= 18 for package: rabbitmq-server-3.6.16-1.el7.noarch
--> Processing Dependency: erlang-os_mon >= 18 for package: rabbitmq-server-3.6.16-1.el7.noarch
--> Processing Dependency: erlang-public_key >= 18 for package: rabbitmq-server-3.6.16-1.el7.noarch
……省略部分內容……
Installed:
  rabbitmq-server.noarch 0:3.6.16-1.el7                                                                                       

Dependency Installed:
  erlang-asn1.x86_64 0:19.3.6.4-1.el7                             erlang-compiler.x86_64 0:19.3.6.4-1.el7                     
  erlang-crypto.x86_64 0:19.3.6.4-1.el7                           erlang-eldap.x86_64 0:19.3.6.4-1.el7                        
  erlang-erts.x86_64 0:19.3.6.4-1.el7                             erlang-hipe.x86_64 0:19.3.6.4-1.el7                         
  erlang-inets.x86_64 0:19.3.6.4-1.el7                            erlang-kernel.x86_64 0:19.3.6.4-1.el7                       
  erlang-mnesia.x86_64 0:19.3.6.4-1.el7                           erlang-os_mon.x86_64 0:19.3.6.4-1.el7                       
  erlang-otp_mibs.x86_64 0:19.3.6.4-1.el7                         erlang-public_key.x86_64 0:19.3.6.4-1.el7                   
  erlang-runtime_tools.x86_64 0:19.3.6.4-1.el7                    erlang-sasl.x86_64 0:19.3.6.4-1.el7                         
  erlang-sd_notify.x86_64 0:1.0-2.el7                             erlang-snmp.x86_64 0:19.3.6.4-1.el7                         
  erlang-ssl.x86_64 0:19.3.6.4-1.el7                              erlang-stdlib.x86_64 0:19.3.6.4-1.el7                       
  erlang-syntax_tools.x86_64 0:19.3.6.4-1.el7                     erlang-tools.x86_64 0:19.3.6.4-1.el7                        
  erlang-xmerl.x86_64 0:19.3.6.4-1.el7                            lksctp-tools.x86_64 0:1.0.17-2.el7                          

Complete!
[root@node02 ~]# 

  設定rabbitmq-server開機啟動,並啟動mabbitmq-server服務

[root@node02 ~]# systemctl enable rabbitmq-server.service
Created symlink from /etc/systemd/system/multi-user.target.wants/rabbitmq-server.service to /usr/lib/systemd/system/rabbitmq-server.service.
[root@node02 ~]# systemctl start rabbitmq-server.service 
[root@node02 ~]# ss -tnl
State      Recv-Q Send-Q                  Local Address:Port                                 Peer Address:Port              
LISTEN     0      128                                 *:11211                                           *:*                  
LISTEN     0      128                                 *:4369                                            *:*                  
LISTEN     0      128                                 *:22                                              *:*                  
LISTEN     0      100                         127.0.0.1:25                                              *:*                  
LISTEN     0      128                                 *:25672                                           *:*                  
LISTEN     0      128                                 *:3306                                            *:*                  
LISTEN     0      128                               ::1:11211                                          :::*                  
LISTEN     0      128                                :::22                                             :::*                  
LISTEN     0      100                               ::1:25                                             :::*                  
LISTEN     0      128                                :::5672                                           :::*                  
[root@node02 ~]# 

  建立openstack使用者並設定密碼為openstack123

[root@node02 ~]# rabbitmqctl add_user openstack openstack123
Creating user "openstack"
[root@node02 ~]# rabbitmqctl list_users
Listing users
openstack       []
guest   [administrator]
[root@node02 ~]# 

  授權openstack使用者對/下的所有檔案有讀寫

[root@node02 ~]# rabbitmqctl set_permissions openstack ".*" ".*" ".*"
Setting permissions for user "openstack" in vhost "/"
[root@node02 ~]# rabbitmqctl list_permissions
Listing permissions in vhost "/"
guest   .*      .*      .*
openstack       .*      .*      .*
[root@node02 ~]# 

  到此,openstack的基礎環境和資料庫節點就準備ok了,後續我們就可以在逐一安裝各個控制節點上的服務和計算節點上的服務;

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