How to Install OpenStack on Ubuntu 22.04 with DevStack

What is OpenStack?

OpenStack is a free, open-standard cloud computing platform. It is primarily deployed as infrastructure-as-a-service (IaaS) in public and private clouds, providing virtual servers and other resources to users.

What is DevStack?

DevStack is a collection of scripts designed to quickly set up a complete OpenStack environment. It allows developers to download the latest version of OpenStack from the Git master branch and is commonly used for setting up development environments or as the foundation for functional testing in OpenStack projects.

Minimum Requirements

Before beginning, ensure your system meets the following minimum requirements:

• A fresh Ubuntu 22.04 installation
• User with sudo privileges
• 4 GB RAM
• 2 vCPUs
• 10 GB of disk space
• Internet connection

Once the prerequisites are met, you can proceed.

Step 1: Update and Upgrade the System

Log into your Ubuntu 22.04 system via SSH and run the following command to update and upgrade system repositories:

sudo apt update -y && sudo apt upgrade -y

Reboot the system afterward using one of the following commands:

sudo reboot

OR

init 6

Step 2: Create the stack User and Assign Sudo Privileges

DevStack should be run as a regular user with sudo privileges. Create a new user named stack with the following commands:

sudo adduser -s /bin/bash -d /opt/stack -m stack
sudo chmod +x /opt/stack

Assign sudo privileges to the stack user:

echo "stack ALL=(ALL) NOPASSWD: ALL" | sudo tee /etc/sudoers.d/stack

Step 3: Install Git and Download DevStack

Switch to the stack user:

su - stack

If Git is not already installed, run the following command:

sudo apt install git -y

Clone the DevStack Git repository:

git clone https://git.openstack.org/openstack-dev/devstack

Step 4: Create a DevStack Configuration File

Navigate to the DevStack directory:

cd devstack

Create a local.conf file:

vim local.conf

Add the following content to the file:

[[local|localrc]]
# Password for Keystone, Database, RabbitMQ, and Services
ADMIN_PASSWORD=StrongAdminSecret
DATABASE_PASSWORD=$ADMIN_PASSWORD
RABBIT_PASSWORD=$ADMIN_PASSWORD
SERVICE_PASSWORD=$ADMIN_PASSWORD
# Host IP - get your Server/VM IP address from `ip addr` command
HOST_IP=10.208.0.10

Save and exit the file.

Notes:ADMIN_PASSWORD is the password used to log in to the OpenStack Dashboard. The default username is admin.HOST_IP is the IP address of your system, which can be obtained by running ifconfig or ip addr.

Step 5: Install OpenStack with DevStack

Run the following script from the devstack directory to start the OpenStack installation:

./stack.sh

The following OpenStack components will be installed:

• Horizon — OpenStack Dashboard
• Nova — Compute Service
• Glance — Image Service
• Neutron — Network Service
• Keystone — Identity Service
• Cinder — Block Storage Service
• Placement — Placement API

The installation process typically takes 10 to 15 minutes, depending on system and internet speed.

Step 6: Access OpenStack on a Web Browser

To access the OpenStack dashboard, navigate to:

https://<server-ip>/dashboard

Log in using the credentials created in the local.conf file (admin and ADMIN_PASSWORD).

You will be directed to the OpenStack management console dashboard.

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