> ## 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.

# Standard environment preparation

This topic provides guidance for preparing your environment before [Standard installation](../install/instructions).

## Install requirements

<Note>
  The installer provides a single-node installation process.
</Note>

**Software requirements**

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

* Any Linux variant capable of supporting Docker

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

* DNS record and TLS/SSL certs (optional)

* 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).

**Additional recommendations:**

* RHEL7/CentOS7: The most popular choice for most Anaconda Server users, and what Anaconda has the most experience supporting. The versions of Docker and Docker-compose available through the default yum package repository are sufficient.
* Ubuntu 20.04 LTS: This has proven to be a reliable choice for customers as well, using the versions of Docker and Docker-Compose available in the default `apt-get` package repository.
* Other Linux variants that provide full support for Docker and Docker-Compose are likely to work as well, but we invite you to inquire with the Anaconda implementation team for our most up-to-date experience.

For Docker, the default log driver must be [configured to the json-file](https://docs.docker.com/config/containers/logging/configure/).

For Red Hat systems, please refer to the [Default options for modifying docker daemon options](https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux_atomic_host/7/getting_started_with_containers/using_the_docker_command_and_service#default_options). To verify that you’re running the json-file, run the following command:

```sh theme={null}
docker info --format '{{.LoggingDriver}}'
```

**Hardware requirements**

* 4 CPUs
* 16GB RAM
* 1TB storage space

When partitioning space, allocate 20GB for `/var/lib` and the remaining 1TB for `/opt/anaconda`.

<Warning>
  Our recommended storage space only accounts for Anaconda’s default channels; if you want to mirror additional channels or upload additional packages, please allocate more storage accordingly.
</Warning>

### DNS and TLS/SSL certificate requirements

Anaconda Server can use TLS/SSL certificates to provide transport layer security for the cluster. If you do not have these certs prior to installation, self-signed certificates can be generated during the initial installation. You can configure the platform to use organizational TLS/SSL certificates after completing the 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 that the root certificate of your certificate authority is trusted by the server running the application and the workstations used by users of the application.

In either case, the configuration will include the following:

* A certificate for the root certificate authority (CA)
* An intermediate certificate chain
* A server certificate
* A private server key

**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 — accessible outside of server**

It is important to protect all services running on the node from outside access. The exceptions are as shown below:

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

**Internal — accessible only within server**

Anaconda Server uses several ports for internal communication between components. These ports do not need to be open to the end user.

* `: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`

To change the `postgres` user password, run `\password postgres` when in the shell of the postgres container.

To change the `redis` user password, follow the instructions under [Troubleshooting](../reference/troubleshooting#using-redis).

## 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
```

## 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
   ```
2. Install `docker-compose` by running the following command:

   ```sh theme={null}
   sudo curl -SL https://github.com/docker/compose/releases/download/v2.15.1/docker-compose-linux-x86_64 -o /usr/local/bin/docker-compose
   ```
3. Make the file executable by running the following command:mand:

   ```sh theme={null}
   sudo chmod +x /usr/local/bin/docker-compose
   ```
4. Create a symbolic link by running the following command:

   ```sh theme={null}
   sudo ln -s /usr/local/bin/docker-compose /usr/bin/docker-compose
   ```
5. Enable the `podman.socket` by running the following commands:

   ```sh theme={null}
   sudo systemctl enable --now podman.socket
   sudo systemctl status podman.socket
   ```
6. 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 [Standard installation](../install/instructions) to install Anaconda Server.