Plesk Obsidian Installation Guide (One-Click Installation)
Prerequisites
Before you begin, make sure you have:
- A VPS running Debian (supported versions for Plesk).
- SSH access as root.
- Minimum required resources (RAM, CPU, disk space).
Update your system:
apt update && apt upgrade -y
Running the One-Click Installer
Connect to your server via SSH as root, then run:
sh <(curl https://autoinstall.plesk.com/one-click-installer || wget -O - https://autoinstall.plesk.com/one-click-installer)
This command will launch the Plesk one-click installer.
It will:
- Download and install the latest stable version of Plesk Obsidian.
- Configure default components.
- Apply available updates.
- Take about 10–15 minutes depending on server and network speed.
Post-Installation Steps
Once installation is complete:
- Run the Plesk post-installation wizard.
- Access the web interface at:
https://<your-ip-or-domain>:8443 - Log in with the
rootuser and its password. - Add your domains, users, and databases.
- Install additional extensions or components via the Plesk interface.
Common Issues and Solutions
| Problem | Possible Cause | Solution |
|---|---|---|
| Installation failed | Missing dependencies or insufficient disk space | Check logs, free up space, install dependencies |
| Cannot access the web interface | Firewall blocking port 8443 or DNS misconfigured | Open port 8443, check DNS configuration |
| Missing components | One-click installer installs only minimal set | Add missing components manually via Plesk |
| SSL not active | No valid certificate or domain not set | Configure Let’s Encrypt or upload a valid SSL certificate in Plesk |
Best Practices
- Always use a valid domain name to access Plesk.
- Enable HTTPS to secure the admin interface.
- Regularly back up data (websites, databases, emails).
- Apply security updates as soon as they are available:
apt update && apt upgrade -y
- Restrict access to the Plesk admin interface (
:8443) to trusted IPs only.
Conclusion
The Plesk Obsidian one-click installer makes it easy to