---
title: "How to install an instance from the Horizon interface"
url: https://docs.ovhcloud.com/de/guides/hosted-private-cloud/opcp/how-to-setup-instance
lang: de
lastUpdated: 2025-11-10
---
# How to install an instance from the Horizon interface
## Objective
Before deploying services on your **OPCP** arrays, you must have an installed and active instance.
This guide details the steps to install an OPCP instance from the **Horizon** interface.
## Requirements
- Have an active [OPCP](https://www.ovhcloud.com/en-ie/hosted-private-cloud/onprem-cloud-platform/) service.
- Have a **user account** with sufficient permissions to access Horizon for the OPCP offer.
## Instructions
### 1. Log in to Horizon
Log in to the **Horizon** interface of your OPCP environment.
Once connected, select the **project** where you want to install your instance.
### 2. Creating a private network
Before deploying your instance, it is generally necessary to create a **private network** so that it can be accessed within your local infrastructure.
In the left-hand menu, click on `Network`, then on `Networks`.
Click on `Create Network`.
**Network**
| Field | Description |
| --------------------------- | ------------------------------------------------------------------------------ |
| **Network Name** | Enter a name for your network. |
| **Enable Admin State** | Leave this option checked to activate the network. |
| **Shared** | Check this box if you want to make the network available to multiple projects. |
| **Create Subnet** | Leave this option checked to create a subnet. |
| **Availability Zone Hints** | Leave the default value. |
**Subnet**
:::info
Although it is possible to create a network without a subnet, it cannot be attached to an instance unless it has one.
:::
| Field | Description |
| ------------------- | ---------------------------------------------------------------------- |
| **Subnet Name** | Enter a name for your subnet. |
| **Network Address** | Define a private IP range, for example `192.168.100.0/24`. |
| **IP Version** | Leave the default value **IPv4**. |
| **Gateway IP** | Optional. If not specified, an address will be automatically selected. |
| **Disable Gateway** | Check this box to not assign a gateway address. |
**Subnet Details**
| Field | Description |
| -------------------- | ------------------------------------------------------------------- |
| **Enable DHCP** | Keep enabled if you want IP addresses to be automatically assigned. |
| **Allocation Pools** | Optional. Allows you to define a specific IP address range. |
| **DNS Name Servers** | Optional. Lets you specify one or more DNS servers. |
| **Host Routes** | Optional. Allows you to add static routes. |
In the left-hand menu, click on `Compute`
, then on `Instances`
.
Click on `Launch Instance`
to create a new instance.
#### Details
| Field | Description |
| --------------------- | ------------------------------------------ |
| **Instance Name** | Enter the name of the instance to create. |
| **Description** | Optional. Add a description if needed. |
| **Availability Zone** | Leave the default value **nova**. |
| **Count** | Specify the number of instances to deploy. |
#### Source
| Field | Description |
| --------------- | ------------------------------------------------------- |
| **Boot Source** | Select the boot source: _Image_ or _Instance Snapshot_. |
| **Image Name** | Choose the image to use (e.g. _Debian 12 BMPOD_). |
#### Flavor
Select the appropriate **hardware configuration** (vCPU, memory, storage).
#### Networks
Select the **private network** previously created. You can also attach an existing **network port** from the _Network Ports_ tab.
### 4. Managing SSH key pairs
:::warning
Although selecting an SSH key in Horizon is not mandatory, it is **essential for connecting to the instance** once it has been created.
:::
**Create a new key pair**
Click `+ Create Key Pair` and fill in the following fields:
| Field | Description |
| ----------------- | ------------------------- |
| **Key Pair Name** | Enter a name for the key. |
| **Key Type** | Select `SSH Key`. |
Next, click on `Create Keypair`.
Copy the private key with **Copy Private Key to Clipboard**, then click on `Done`.
The key is now selected by default. Click on `Launch Instance` to start creating the instance.
**Import an existing key**
Click on `Import Key Pair` and fill in the following fields:
| Field | Description |
| ----------------- | ------------------------------------------------------- |
| **Key Pair Name** | Name of the key. |
| **Key Type** | Select **SSH Key**. |
| **Public Key** | Paste your public key or upload the corresponding file. |
Click on `Import Key Pair`.
The key is now selected by default. Click on `Launch Instance` to start creating the instance.
The other configuration tabs (Security Groups, Configuration, Metadata, etc.) are not required for a standard installation.
To learn more, refer to the [official OpenStack documentation](https://docs.openstack.org/)
.
### 6. References
- [OpenStack Official Documentation – Horizon](https://docs.openstack.org/horizon/latest/)
- [OpenStack Networking Guide (Neutron)](https://docs.openstack.org/neutron/latest/)
- [OpenStack Compute Guide (Nova)](https://docs.openstack.org/nova/latest/)
- [OpenStack Key Pairs](https://docs.openstack.org/nova/latest/user/ssh-keys.html)
- [Debian 12 Official Site](https://www.debian.org/releases/book/)
## Go further
If you need training or technical assistance for the implementation of our solutions, contact your sales representative or click [this link](https://www.ovhcloud.com/de/professional-services/) to request a quote and have your project analyzed by our Professional Services team experts.
Join our [community of users](https://community.ovhcloud.com/).