Software Requirements for Plesk Obsidian
We recommend that you read information about the product installation, upgrade, or migration before you start deploying Plesk. This information, including detailed instructions, can be found in the Deployment Guide.
When installing Plesk, pay attention to the following installation requirements:
Installing or operating Plesk on a CloudLinux server with link traversal protection enabled results in a variety of issues. To avoid them, disable the 'fs.protected_symlinks_create' kernel option first.
Active Directory Domain Controllers Support
Plesk does not support this configuration. Both new Plesk installations and those updated from Plesk Onyx cannot work on a server acting as a primary or backup domain controller.
Plesk Obsidian supports AppArmor on all supported versions of Ubuntu. Before installing Plesk Obsidian on any supported Debian version, make sure that AppArmor is disabled first.
NFS Shares Support
Plesk does not officially support the use of NFS shares for storing vhosts directories. This configuration was not tested and can be used at your own risk.
Configuration and content from the following hosting platforms can be imported into Plesk Obsidian:
- Plesk for Linux and Plesk for Windows: 8.6, 9.5, 10.4, 11.0, 11.5, 12.0, 12.5, and Plesk Onyx.
- cPanel 64 and later
- Confixx 3.3
- Helm 3.2
- Plesk Expand 2.3.2
- Parallels Pro Control Panel for Linux 10.3.6
Plesk can automatically set up the following email clients:
- Microsoft Outlook (except for Microsoft Outlook 2019 and O365)
- Mozilla Thunderbird
- Apple Mail
Plesk Obsidian for Linux distribution packages include the following components:
- Plesk Premium Antivirus 6.0.2
- Kaspersky Anti-Virus 126.96.36.199
- AWStats 7.7
- ProFTPD 1.3.7e
- qmail 1.03
- Courier-IMAP 5.1.8
- Postfix 3.5.14 (for most OSes)
- Dovecot 188.8.131.52
- Horde IMP 5 (requires PHP 5.3)
- Horde 5.2.23
- IMP 6.2.27
- Ingo 3.2.16
- Kronolith 4.2.29
- Nag 4.2.19
- Mnemo 4.2.14
- Passwd 5.0.7
- Turba 4.2.29
- Pear 1.10.9
- Roundcube 1.6.0 (for OSes other than Red Hat Enterprise Linux 7, CentOS 7, CloudLinux 7.1, and Ubuntu 18.04)
- phpMyAdmin 5.1.3
- nginx 1.20.2
- OpenSSL 1.1.1n
- OpenSSL used by nginx 1.1.1n
- TLS 1.3 (in nginx for customers' websites)
- PHP 5.2.17, 5.3.29, 5.4.45, 5.5.38, 5.6.40, 7.0.33, 7.1.33, 7.2.34, 7.3.33, 7.4.33, 8.0.26, 8.1.13
- Fail2ban 0.11.2
- ModSecurity 3.0.8
- ModSecurity 2.9.6
- ModSecurity Rule Set 2.2.9-30-g520a94b
- Resource Controller
- Node.js 12, 14, 16, 18
Note: Node.js 18 currently not supported on the following OSes:
- CentOS 7
- Ubuntu 18.04
- Debian 9
- CloudLinux 7
- Red Hat Enterprise Linux 7
- Virtuozzo Linux 7
- Phusion Passenger 6.0.12
Ruby 2.1.10, 2.2.10, 2.3.8, 2.4.6, 2.5.5, 2.6.3.
Note: on Debian 9, only Ruby 2.4.6 and later is supported.
- Bundler 1.13.5
- Rootkit Hunter 1.4.4
Plesk Obsidian for Microsoft Windows distribution packages include the following components:
- Plesk Premium Antivirus 6.0.2
- Kaspersky Anti-Virus 184.108.40.206
- ModSecurity 2.9.6
- Microsoft SQL Server Express 2012 SP3
- Microsoft SQL Server Express 2014 SP2
- Microsoft SQL Server Express 2016 SP1
- Microsoft SQL 2017 Express
- MariaDB 10.5.10 (for Plesk database)
- MariaDB 10.6.9, 10.5.17 and 10.3.36 (for customer websites)
- BIND DNS Server 9.16.33
- MailEnable Standard 10.27
- PHP 5.6.40, 7.0.33, 7.1.33, 7.2.34, 7.3.33, 7.4.33, 8.0.26, 8.1.13
- ASP.NET Core 2.1.28, 3.1.26, 5.0.17, 6.0.6
- .NET Core 3.1.3, 2.1.17
- SpamAssassin 3.0-3.4.5
- phpMyAdmin 5.0.3
- AWStats 7.7
- Webalizer V2.01-10-RB02 (Windows NT 5.2) English
- Horde 5.2.23 and IMP 6.2.27
- Microsoft Web Deploy 3.5 + WebMatrix 3.0
- Microsoft Web Deploy 3.6
- IIS URL Rewrite Module 7.2.1993
- Node.js 16.17.1
- 7zip 18.05
- Microsoft Visual C++ 2017 Redistributable
Supported Third-Party Components
- Apache 2.4
- Postfix 2.11.3 (Debian 8)
- BIND 9.8–9.11
- Webalizer 2.x
- mod_perl 2.0.8
- mod_python 3.3.1 *
- PHP 5.2–8.1 **
Database servers and tools:
- MySQL 5.7 and later
- MySQL community edition 5.7, 8
- PostgreSQL 8.4–12
- MariaDB. For details, see "Plesk Policy on MariaDB Support".
- MariaDB Connector 3.0.9
- SpamAssassin 3.0–3.4
* - mod_python is not supported on Red Hat Enterprise Linux 7.x, CentOS 7.x, and CloudLinux 7.x.
** - by default, PHP used for Plesk webmail (Horde, Roundcube) is installed from the repository of the OS vendor. You can install PHP from an alternative repository following the repository maintainers' instructions, provided that the PHP package names remain the same. Installing PHP from a repository that changes the names of PHP packages (for example, IUS, Webtatic) will prevent Plesk webmail from operating correctly, and may also cause dependency issues when installing Plesk updates.
This is a shortened list of supported third-party components. It does not include the components supplied with the Plesk distribution, as they were already mentioned as distributed and supported.
- Microsoft Internet Information Services (IIS) 7.5, 8.0, 8.5, 10.0
- MailEnable Standard / Professional / Enterprise / Enterprise Premium 6.91–10.42
- SmarterMail 100, 16.3
- IceWarp Mail Server 220.127.116.11
- MailEnable Web Client
- SmarterMail Web Client
- IceWarp (Merak) Mail Server Web Client
Spam filtering tools
- SmarterMail Spamfilter
- IceWarp (Merak) Mail Server Anti-Spam
- SmarterMail Anti-Virus
- IceWarp (Merak) Mail Server Anti-Virus
- Microsoft DNS Server
- Simple DNS Plus 6.0.115
- SmarterStats 11.1
- ASP.NET 2.0-4.x
- ASP.NET Core 2.1.28, 3.1.30, 5.0.15, 6.0.10 (“Windows Server Hosting (.exe) Runtime” on the download page)
- Python 2.7.17
- Microsoft SQL Server 2005–2016
- MySQL community edition 5.7
- MySQL ODBC connector 5.3.14
In December 2021, MariaDB announced its new release model: quarterly releases with a one-year maintenance period of each release. MariaDB 10.6 is the last database version that falls under the old release model and has a five-year maintenance period (long-term support).
Taking into account the MariaDB release model, Plesk announces its policy regarding MariaDB support:
- (MariaDB 10.6 and earlier) Plesk supports each version of MariaDB as a local database server for five years after a MariaDB release.
- (MariaDB 10.7 and later) Plesk supports each stable version of MariaDB as a remote database server. Plesk introduces the support within one month after a stable MariaDB release.
As a local database server, we recommend that you install a long-term support release (LTS release) of MariaDB. At the moment, LTS releases are MariaDB 10.6 and earlier. If MariaDB has other LTS releases in the future, Plesk will support them as a local database server as well.
Note: The support also applies to subsequent Plesk updates and to Plesk installation on a server with MariaDB already installed from the OS or MariaDB repository.
Note: It means that the Plesk administrator can register MariaDB in Plesk (Tools & Settings > Database Servers (under "Applications & Databases")) and then use MariaDB to host users' databases.