[root@localhost ~]# setenforce 0
[root@localhost ~]# vi /etc/selinux/config 
[root@localhost ~]# sed -i 's/SELINUX=enforcing/SELINUX=disabled/g' /etc/selinux/config

[root@localhost ~]# systemctl stop firewalld
[root@localhost ~]# systemctl disable firewalld
Removed symlink /etc/systemd/system/multi-user.target.wants/firewalld.service.
Removed symlink /etc/systemd/system/dbus-org.fedoraproject.FirewallD1.service.

[root@localhost ~]# hostnamectl set-hostname controller

[root@localhost ~]# hostnamectl set-hostname computer

[root@computer ~]# yum install -y chrony

[root@controller ~]# yum install -y chrony

[root@controller ~]# vi /etc/chrony.conf

[root@computer ~]# vi /etc/chrony.conf 

[root@controller ~]# systemctl restart chronyd

[root@controller ~]# chronyc sources
210 Number of sources = 1
MS Name/IP address         Stratum Poll Reach LastRx Last sample               
===============================================================================
^* 203.107.6.88                  2   6    17    50  +2663us[+4287us] +/-   30ms
[root@controller ~]# date 
Tue Feb  7 10:06:43 EST 2023

[root@controller ~]# vi /etc/hosts

[root@computer ~]# vi /etc/hosts

[root@controller ~]# yum install centos-release-openstack-train -y

[root@computer ~]# yum install centos-release-openstack-train -y

[root@controller ~]# yum install python-openstackclient -y

[root@computer ~]# yum install centos-release-openstack-train -y

[root@controller ~]# yum install openstack-selinux -y

[root@computer ~]# yum install openstack-selinux -y

[root@controller ~]# yum install mariadb mariadb-server python2-PyMySQL -y

[root@controller ~]# vi /etc/my.cnf.d/openstack.cnf 

[mysqld]
bind-address = 192.168.124.88
 
default-storage-engine = innodb
innodb_file_per_table = on
max_connections = 4096
collation-server = utf8_general_ci
character-set-server = utf8
~                             

[root@controller ~]# systemctl enable mariadb.service[root@controller ~]# systemctl start mariadb.service

[root@controller ~]# mysql_secure_installation
 
NOTE: RUNNING ALL PARTS OF THIS SCRIPT IS RECOMMENDED FOR ALL MariaDB
      SERVERS IN PRODUCTION USE!  PLEASE READ EACH STEP CAREFULLY!
 
In order to log into MariaDB to secure it, we'll need the current
password for the root user.  If you've just installed MariaDB, and
you haven't set the root password yet, the password will be blank,
so you should just press enter here.
 
Enter current password for root (enter for none): 
OK, successfully used password, moving on...
 
Setting the root password ensures that nobody can log into the MariaDB
root user without the proper authorisation.
 
Set root password? [Y/n] y
New password: 
Re-enter new password: 
Password updated successfully!
Reloading privilege tables..
 ... Success!
 
 
By default, a MariaDB installation has an anonymous user, allowing anyone
to log into MariaDB without having to have a user account created for
them.  This is intended only for testing, and to make the installation
go a bit smoother.  You should remove them before moving into a
production environment.
 
Remove anonymous users? [Y/n] y
 ... Success!
 
Normally, root should only be allowed to connect from 'localhost'.  This
ensures that someone cannot guess at the root password from the network.
 
Disallow root login remotely? [Y/n] n
 ... skipping.
 
By default, MariaDB comes with a database named 'test' that anyone can
access.  This is also intended only for testing, and should be removed
before moving into a production environment.
 
Remove test database and access to it? [Y/n] y
 - Dropping test database...
 ... Success!
 - Removing privileges on test database...
 ... Success!
 
Reloading the privilege tables will ensure that all changes made so far
will take effect immediately.
 
Reload privilege tables now? [Y/n] y
 ... Success!
 
Cleaning up...
 
All done!  If you've completed all of the above steps, your MariaDB
installation should now be secure.
 
Thanks for using MariaDB!

[root@controller ~]# yum install rabbitmq-server -y

[root@controller ~]# systemctl enable rabbitmq-server.service

[root@controller ~]# systemctl start rabbitmq-server.service

[root@controller ~]# rabbitmqctl add_user openstack 123Creating user "openstack"

[root@controller ~]# rabbitmqctl set_permissions openstack ".*" ".*" ".*"Setting permissions for user "openstack" in vhost "/"

[root@controller ~]# rabbitmq-plugins list

[root@controller ~]# rabbitmq-plugins enable rabbitmq_management rabbitmq_management_agent

[root@controller ~]# ss  -tln
State       Recv-Q Send-Q                     Local Address:Port                                    Peer Address:Port              
LISTEN      0      128                                    *:25672                                              *:*                  
LISTEN      0      128                       192.168.124.88:3306                                               *:*                  
LISTEN      0      128                                    *:4369                                               *:*                  
LISTEN      0      128                                    *:22                                                 *:*                  
LISTEN      0      128                                    *:15672                                              *:*                  
LISTEN      0      100                            127.0.0.1:25                                                 *:*                  
LISTEN      0      128                                   :::5672                                              :::*                  
LISTEN      0      128                                   :::22                                                :::*                  
LISTEN      0      100                                  ::1:25                                                :::*              

[root@controller ~]# yum install memcached python-memcached -y

[root@controller ~]# vi /etc/sysconfig/memcached

PORT="11211"
USER="memcached"
MAXCONN="1024"
CACHESIZE="1024"
OPTIONS="-l 127.0.0.1,::1,controller"
~                                      

[root@controller ~]# systemctl enable memcached.service
[root@controller ~]# systemctl start memcached.service

[root@controller ~]# cat /etc/sysconfig/memcached 
PORT="11211"
USER="memcached"
MAXCONN="1024"
CACHESIZE="1024"
OPTIONS="-l 127.0.0.1,::1,controller"