Install OpenStack using DevStack

OpenStack With DevStack

Step 1: Create a Droplet
1. Choose Ubuntu 22.04 as the OS.
2. Select Droplet Size:
Minimum: 4 GB RAM / 2 vCPUs / 50 GB Disk (DevStack is resource-intensive; 8 GB RAM is recommended for stability).

Step 2: Prepare the Droplet
1. SSH into the Droplet as root:
```ssh root@your_droplet_ip```

2. Create a Non-Root User (DevStack requires this):
```
adduser stack
usermod -aG sudo stack
echo "stack ALL=(ALL) NOPASSWD: ALL" | sudo tee /etc/sudoers.d/stack
su - stack
```

Step 3: Install Dependencies
```
sudo apt update -y && sudo apt upgrade -y
sudo apt install git -y
```

Step 4: Clone DevStack
```
git clone https://opendev.org/openstack/devstack -b master
cd devstack
```

Step 5: Configure DevStack
1. Create `local.conf`
```
cat <<EOF > local.conf
[[local|localrc]]
ADMIN_PASSWORD=secret
DATABASE_PASSWORD=secret
RABBIT_PASSWORD=secret
SERVICE_PASSWORD=secret
HOST_IP=$(hostname -I | awk '{print $1}')
ENABLE_DEBUG_LOG_LEVEL=True
ENABLE_HORIZON=True
EOF
```
* Replace secret with a strong password.
* HOST_IP: Use the Droplet’s private IP if available, or public IP (check with hostname -I).

Step 6: Run DevStack Installation
```
./stack.sh
```

Step 7: Configure Firewall Rules
Allow traffic to OpenStack Services:
```
sudo ufw allow 80/tcp   # Horizon Dashboard (HTTP)
sudo ufw allow 443/tcp  # Horizon Dashboard (HTTPS)
sudo ufw allow 6080/tcp # Nova VNC Proxy
```

Step 8: Access the OpenStack Dashboard
1. Visit http://your_droplet_ip/dashboard in a browser.

2. Log in with:

  * Username: admin

  * Password: secret (as set in local.conf).