---
title: Harbor Installation Prerequisites
weight: 20
---

Harbor is deployed as several Docker containers. You can therefore deploy it on any Linux distribution that supports Docker. The target host requires Docker, and Docker Compose to be installed.

### Hardware

The following table lists the minimum and recommended hardware configurations for deploying Harbor.

|Resource|Minimum|Recommended|
|---|---|---|
|CPU|2 CPU|4 CPU|
|Mem|4 GB|8 GB|
|Disk|40 GB|160 GB|

### Software

The following table lists the software versions that must be installed on the target host.

|Software|Version|Description|
|---|---|---|
|Docker engine|Version 17.06.0-ce+ or higher|For installation instructions, see [Docker Engine documentation](https://docs.docker.com/engine/installation/)|
|Docker Compose|Version 1.18.0 or higher|For installation instructions, see [Docker Compose documentation](https://docs.docker.com/compose/install/)|
|Openssl|Latest is preferred|Used to generate certificate and keys for Harbor|

### Network ports

Harbor requires that the following ports be open on the target host.

|Port|Protocol|Description|
|---|---|---|
|443|HTTPS|Harbor portal and core API accept HTTPS requests on this port. You can change this port in the configuration file.|
|4443|HTTPS|Connections to the Docker Content Trust service for Harbor. Only required if Notary is enabled. You can change this port in the configuration file.|
|80|HTTP|Harbor portal and core API accept HTTP requests on this port. You can change this port in the configuration file.|

## What to Do Next ##

[Download the Harbor Installer](download-installer.md).