Book Image

Production Ready OpenStack - Recipes for Successful Environments

By : Arthur Berezin
Book Image

Production Ready OpenStack - Recipes for Successful Environments

By: Arthur Berezin

Overview of this book

OpenStack is the most popular open source cloud platform used by organizations building internal private clouds and by public cloud providers. OpenStack is designed in a fully distributed architecture to provide Infrastructure as a Service, allowing us to maintain a massively scalable cloud infrastructure. OpenStack is developed by a vibrant community of open source developers who come from the largest software companies in the world. The book provides a comprehensive and practical guide to the multiple uses cases and configurations that OpenStack supports. This book simplifies the learning process by guiding you through how to install OpenStack in a single controller configuration. The book goes deeper into deploying OpenStack in a highly available configuration. You'll then configure Keystone Identity Services using LDAP, Active Directory, or the MySQL identity provider and configure a caching layer and SSL. After that, you will configure storage back-end providers for Glance and Cinder, which will include Ceph, NFS, Swift, and local storage. Then you will configure the Neutron networking service with provider network VLANs, and tenant network VXLAN and GRE. Also, you will configure Nova's Hypervisor with KVM, and QEMU emulation, and you will configure Nova's scheduler filters and weights. Finally, you will configure Horizon to use Apache HTTPD and SSL, and you will customize the dashboard's appearance.
Table of Contents (16 chapters)
Production Ready OpenStack - Recipes for Successful Environments
About the Author
About the Reviewers

Installing MariaDB database

Most OpenStack projects and their components keep their persistent data and objects' status in a database. MySQL and MariaDB are the most used and tested databases with OpenStack. In our case, and in the most commonly deployed layout, controller-Neutron-compute, the database is installed on the controller node.

Run the following commands on the controller node!

How to do it...

Proceed with the following steps:

  1. Install MaridaDB packages as follows:

    [root@controller ~]# yum install mariadb-galera-server

    Yum might deploy additional packages after resolving MariaDB's dependencies. A successful installation should output as follows:

      mariadb-galera-server.x86_64 1:5.5.37-7.el7ost
    Dependency Installed:
      mariadb.x86_64 1:5.5.37-1.el7_0
      mariadb-galera-common.x86_64 1:5.5.37-7.el7ost
      mariadb-libs.x86_64 1:5.5.37-1.el7_0
      perl-DBD-MySQL.x86_64 0:4.023-5.el7
  2. Start MariaDB database service using systemctl command as a root:

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

    If no output is returned, this means the command is completed successfully.

  3. Enable it, so it starts automatically after reboot:

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

    MariaDB maintains its own user accounts and passwords; root is the default administrative user name account that MariaDB uses. We should change the default password for the root account as keeping the default password is a major security treat.

  4. Change the database root password as follows, where new_password is the password we want to set:

    [root@controller ~]# mysqladmin -u root password new_password

    Keep this in the passwords' list; we will need to create databases for the services we will deploy in the following parts of the chapter.

There's more...

Almost all components require access to the database; hence, we should keep port 3306 open for new connections on the controller node:

[root@controller ~]# firewall-cmd --add-port=3306/tcp --permanent