> ## Documentation Index
> Fetch the complete documentation index at: https://anaconda.com/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# Air-gapped environment preparation

This topic provides guidance for preparing an air-gapped environment and installing an air-gapped environment system for a straightforward installation of Anaconda Server, as detailed in [Air gap installation](../install/airgap-install).

## Preparing the air-gapped environment

### Environment requirements

The installer is a self-extracting binary that contains the all the necessary components to run Anaconda Server services. The basic requirements prior to installation are:

**Software requirements**

* Any Linux variant capable of supporting Docker

* Use a fully qualified domain name (FQDN) or Hostname

* DNS record and TLS/SSL certs

* Make sure that SELinux is not in enforcing mode, either by disabling it or putting it in `permissive` mode in the `/etc/selinux/config` file. If it is in enforcing mode, you will need to reboot your instance after updating. After rebooting, run the following command to verify that SELinux is not being enforced:

  ```sh theme={null}
  getenforce
  # The result should be either Disabled or Permissive
  ```

* For Docker based installations:
  * [Docker Engine](https://docs.docker.com/engine/install/) 23.x+ (Supports Compose format 3.8)
  * [Docker Compose](https://docs.docker.com/compose/install/) 2.1+ (Supports Compose format 3.8)

* For Podman based installations:
  * RHEL8+
  * Anaconda Server version 6.3.0+
  * [Podman version 4.0.2+](https://podman.io/getting-started/installation)
  * [Netavark network plugin](https://github.com/containers/netavark)
  * [Podman-docker](https://linuxsoft.cern.ch/cern/centos/7/extras/x86_64/repoview/podman-docker.html)
  * [Docker Compose](https://docs.docker.com/compose/install/) 2.1+ (Supports Compose format 3.8)
  * Complete the [Podman setup steps](#podman-setup).

**Hardware requirements**

* 4 CPUs
* 16GB RAM
* 1.5TB storage space
  * Conda\_air gap zip file is \~700GB
  * CVE zip file is \~20MB

When partitioning space, allocate 20gb for `/var/lib` and the remaining 1.5TB for `/opt/anaconda`.

### Installing packages and CVE files

**Artifact download authorization**

Anaconda supplies air-gapped customers with our repository in the form of tarball files. In order to gain access to the tarball files that contain the conda packages and CVEs, you *must\** provide Anaconda with the **IP address** of the machine you are using to download them. Speak with your Anaconda implementation team member to get help allowlisting your IP address.

<Note>
  This *must* be completed prior to scheduling your implementation with Anaconda. **The download will take several hours**.
</Note>

If you prefer not to use a hostname, the public IP address of your environment will be required.

**Installing packages and CVEs**

In this section, you will install Anaconda Server packages, move those packages to your air-gapped repository, and configure the `.env` file to point to the location of the CVEs.

<Note>
  Downloading the Anaconda Server Packages may take **several hours**.
</Note>

Run the following commands to install the air gap and cve packages:

```sh theme={null}
curl -O https://anaconda-airgap-te.s3.amazonaws.com/conda_main.zip
curl -O https://anaconda-airgap-te.s3.amazonaws.com/conda_msys2.zip
curl -O https://anaconda-airgap-te.s3.amazonaws.com/conda_r.zip
curl -O https://anaconda-airgap-te.s3.amazonaws.com/cve.zip
```

<Warning>
  Do not unzip the air gap or cve files.
</Warning>

### DNS and TLS/SSL certificate requirements

Anaconda Server can use certificates to provide transport layer security for the cluster. It is required to have your TLS/SSL certs prior to installation; otherwise, self-signed certificates can be generated during the initial installation.

You may purchase certificates commercially, use Let’s Encrypt, or generate them using your organization’s internal public key infrastructure (PKI) system. When using an internal PKI-signed setup, the CA certificate is stored on the file system. You will need to make sure the root certificate of your certificate authority is trusted by the server running the application and the workstations used by users of the application.

**DNS requirements**

Web browsers use domain names and web origins to separate sites, so they cannot tamper with each other. If you want to use DNS, you must have it ready prior to installation. This DNS name is what users will use to access the application.

**You must provide the SSL cert for the hostname your Anaconda Server instance is running on.**

### Security requirements

**External Ports**

These are ports that allow access outside of the server. It is important to protect all services running on the node from outside access. The exceptions are as shown below. These ports need to be open to allow access to Anaconda Server via browser and (optionally) via SSH:

* `:443` nginx - only if you are using HTTPS
* `:22` ssh - optional; only if you need SSH

**Internal Ports**

These are ports that allow access within the server and are open on docker containers, exposed only to the docker network. Ideally, Anaconda Server will have a dedicated environment. Anaconda Server uses several ports for internal communication between components. These ports do not need to be open to the end user but they need to be reserved, as some bind to the local host network interfaces.

You can run `docker ps` and reference the **PORTS** column, as shown in the following example:

<Frame>
  <img src="https://mintcdn.com/anaconda-29683c67/atV1FF4bOzhiwIx6/images/docker_ps.png?fit=max&auto=format&n=atV1FF4bOzhiwIx6&q=85&s=126b3d709a3798fccc31d3d69edd28f3" alt="" width="2026" height="284" data-path="images/docker_ps.png" />
</Frame>

* `:5000` repo - Anaconda Server API
* `:5002` repo-proxy - Anaconda Server file serving API proxy
* `:5000` repo-dispatcher - Anaconda Server event dispatcher/handler (exposed only for prometheus metrics)
* `:5000` repo-worker - Anaconda Server scheduled jobs worker (exposed only for prometheus metrics)
* `:8080` keycloak - keycloak’s /auth/\* endpoints are proxied in Nginx
* `:5432` postgres - Postgresql database used by Anaconda Server and Keycloak
* `:6379` redis - Redis instance used by Anaconda Server services
* `:9090` prometheus - Prometheus is proxied in Nginx at /Prometheus

## Enable IP address forwarding

Forwarding IP addresses allows containers to communicate with one another on your host. You’ll need to configure these settings to allow non-root users to perform installations of Anaconda Server.

```sh theme={null}
sysctl net.ipv4.conf.all.forwarding=1
sysctl net.ipv6.conf.all.forwarding=1
iptables -P FORWARD ACCEPT
```

## Installing air-gapped environment system

Install Docker and Docker Compose. Contact your operating system vendor or IT department for assistance with this step.

## Podman setup

Podman setup requires you to download and configure the `podman-docker` package. This package converts docker commands into their corresponding podman commands.

1. Install `podman-docker` by running the following command:

   ```sh theme={null}
   sudo yum install -y podman-docker
   ```

   <Note>
     You might need to work with your IT department to secure this package.
   </Note>

2. If necessary, make your `docker-compose` volume executable by running the following command:

   ```sh theme={null}
   sudo chmod +x /usr/local/bin/docker-compose
   ```

3. Create a symbolic link by running the following command:

   ```sh theme={null}
   sudo ln -s /usr/local/bin/docker-compose /usr/bin/docker-compose
   ```

4. Enable the `podman.socket` by running the following commands:

   ```sh theme={null}
   sudo systemctl enable --now podman.socket
   sudo systemctl status podman.socket
   ```

5. Verify that the podman socket works by running the following command:

   ```sh theme={null}
   sudo curl -w "\n" -H "Content-Type: application/json" --unix-socket /var/run/docker.sock http://localhost/_ping
   ```

## System validation checks

Once your environment is prepared, run the following commands to verify it is ready for installation of Anaconda Server.

To verify what type of processor your system is running and the number of CPUs present, run the command:

```sh theme={null}
cat /proc/cpuinfo
```

To verify the amount of system memory is sufficient, run the command:

```sh theme={null}
cat /proc/meminfo
```

To verify there is a sufficient amount of disk space for the installation, run the command:

```sh theme={null}
df -h
```

To verify the kernel release version and processor type, run the command:

```sh theme={null}
uname -a
```

To verify your operating system release version, run the command:

```sh theme={null}
cat /etc/os-release
```

To verify your version of Docker, run the command:

```sh theme={null}
docker version
```

To verify your version of `docker-compose`, run the command:

```sh theme={null}
docker-compose --version
```

***

After ensuring all requirements have been met, proceed to [Air gap installation](../install/airgap-install) to install Anaconda Server in your air-gapped environment.