OpenStack Stein installation (1)

Environment:

? 192.168.205.7: as Chrony, DNS and YUM Source server (for faster installation, build your own yum source)
? 192.168.205.147: as DataBase, install MariaDB, RabbitMQ, Memcached
? 192.168.205.167: as controller, install keystone, placement, nova, neutron, dashboard
? 192.168.205.187: as compute node, install neutron agent and nova agent
Note: All operating systems are disabled by default firewalld, iptable is empty, close selinux

Version:

? OS: centos 7 1810 with mini install for controller and SQL server
? OS: CentOS 7 1511 with mini install for compute node
? Openstack Minimal deployment for Stein
? mariadb-10.3.10
Note: Others not specified are yum installations

Destination:

? Minimize the installation of the latest version of openstack stein
? After the installation is complete, the components will run normally.
? The test is successfully established and run.
? The basic network functions are tested by running the test. 

Steps:

1. Pre-installation environment preparation
2. Install keystone
3. Install glance image service
4. Install placement< br />5. Install Nova on controller
6. Install Nova on compute node
 7. Install Neutron on controller node
8. Install Neutron on compute node
9. Install dashboard
10. Verification test

Environment preparation before installation

Preparation for installation is very important, because there are many openstack services, and the dependencies between services are close. Reasonable planning will not lead to installation problems, otherwise various problems will occur.

Prepare the environment

1. The time of all servers must be the same. We set the time service synchronization. This can be an external source or our own time source server. I use A chrony server serves as a time server, and Tongjin also serves as dns resolution and yum source

   #yum install chrony
   #systemctl start chronyd
   #cat /etc/chrony.conf 
    server 192.168.205.7 iburst
   #systemctl status chronyd
   #chronyc sources -v #Check if the chrony time is synchronized, see ^* is synchronized, otherwise there is no synchronization

2. Modify the hosts file and copy the hosts file to the three servers. If dns is used, this step is not necessary, but do not configure the host name.

   #cat /etc/hosts
   192.168.205.167 controller1
   192.168.205.147 master
   192.168.205.187 node1

3. Planning for DNS domain name resolution

   Domain name: flex.net
   name server 192.168.205.7
   A stack.flex.net 192.168.205.167 controller1
   A dbs.flex.net 192.168.205.147 database, memcached, rabbitMQ< br />Tongjin DNS is also used as a forwarding server to install software for yum.

4. Edit the network card each has three network cards, divided into management network, tenant network and external network, management network dns points to 192.168.205.7

   eth0 is the management and API network
   #cat ifcfg-eth0
   NAME="eth0"
   DEVICE="eth0"
   ONBOOT=yes< br />BOOTPROTO=static
   IPADDR=192.168.205.x
   NETMASK=255.255.255.0
   TYPE=Ethernet
   eth1 is used by tenant tenant network, without IP, set to none 
   #cat ifcfg-eth1
   NAME="eth1"
   DEVICE="eth1"
   ONBOOT=yes
   BOOTPROTO=none
   eth2 is installed on the external network Use yum source, use nat method, and set dns to the dns of the intranet: 192.168.205.7
   #cat ifcfg-eth2
   NAME="eth2"
   DEVICE="eth2"
   ONBOOT=yes
   BOOTPROTO=static
   IPADDR=172.18.18.x
   NETMASK=255.255.255.0
   GATEWAY=172.18.18.2
   DNS1=192.168.205.7 
   Note: Do not modify HWADDR and UUID< /pre>

5. Install the source, first enable extras packges, I use the source that comes with the original cenos installation, you can also enable the extras source of aliyun or tinghua

   #ls 
   backup CentOS-Base.repo CentOS-Debuginfo.repo CentOS-Media.repo CentOS-Vault.repo
   backup1 CentOS-CR.repo CentOS-fasttrack.repo CentOS-Sources.repo
   # yum list Centos-release-OpenStack*
   …
   Available Packages
   centos-release-openstack-stein.noarch 1-1.el7.centos extras
   centos-release-openstack- ocata.noarch 1-2.el7 extras 
   centos-release-openstack-pike.x86_64 1-1.el7 extras 
   centos-release-openstack-queens.noarch 1-2.el7.centos extras < br />
   Note: We need to disable the epel source during installation

6. We use yum to directly download and install the latest stein source

   #yum install centos-release-openstack -stein

7. After the installation is complete, we see some more sources in the directory

   #ls
   backup CentOS-Debuginfo.repo Ce ntOS-QEMU-EV.repo
   backup1 CentOS-fasttrack.repo CentOS-Sources.repo
   CentOS-Base.repo CentOS-Media.repo CentOS-Storage-common.repo
   CentOS-Ceph -Nautilus.repo CentOS-NFS-Ganesha-28.repo CentOS-Vault.repo
   
   #cat CentOS-OpenStack-stein.repo 
    CentOS-OpenStack-stein.repo
    …

8. Update the package on all nodes

   # yum upgrade

9. Install the openstack client on all nodes

   # yum install python -openstackclient

   Install the database

10. Install the database and python components

    # yum install mariadb mariadb-server python2-PyMySQL

11. Create a database configuration file and write the following configuration

    # vi /etc/my.cnf.d/openstack.cnf
    [mysqld]
    bind-address = 192.168.205.147
     default-storage-engine = innodb
    innodb_file_per_table = on
    max_connections = 4096
    collation-server = utf8_general_ci
    character-set-server = utf8

< li>Allow the system to automatically start the service and start the service when the system boots

# systemctl enable mariadb.service
# systemctl start mariadb.service

12. Run the mysql_secure_installation script, especially the root password, and configure a suitable password for root. For demonstration, we set it as root, and the password is root123

    # mysql_secure_installation

    Install the message queue on mysql< /h4>

    Openstack services use message queues to coordinate operation and status information. Message queues usually run on the controller. Openstack supports several message queues such as rabbitMQ, Qpid, ZeroMQ. Most distributions support these Specific message queue. In this experiment, we use RabbitMQ because most distributions support it. In this column, our message queue runs in dababase

13. Install package

    # yum install rabbitmq -server

14. Allow the system to automatically start the service and start the service when the system boots

    # systemctl enable rabbitmq-server.service
    # systemctl start rabbitmq-server.service

15. Add an openstack user

    # rabbitmqctl add_user openstack openstack123

16. Allow openstack users to have write, and read access rights

    # rabbitmqctl set_permissions openstack ". *" ".*" ".*"
    Note: Authorize user "openstack" in vhost "/" ...

    Install and configure Memcached

    Identity The identification service authentication mechanism uses Memcached to cache tokens. Memcached usually runs on the controller. For production deployment, we recommend enabling a combination of firewall, authentication and encryption to protect it.

17. Install the package

    # yum install memcached python-memcached

18. Edit the file /etc/sysconfig/memcached and modify the configuration file service to use the management IP , Allow other nodes to access Memcached through the management IP

    #vi /etc/sysconfi/memcached
    OPTIONS="-l 127.0.0.1,::1,master" #If you install it on the database server, Then change the name of the database server, because the analysis has been done in the hosts

19. Allow the system to automatically start the service and start the service when the system boots

    # systemctl enable memcached.service
    # systemctl start memcached.service