* fix: resolve merge conflict

Subproject commit 40f4055b6192e101c252b9c294bff011204ce9ee

For version 3.0.0 of IXP, download the compose preset folder for HTTPS deployment using Let's

Encrypt [here](https://gitlab.fi.muni.cz/inject/docker-deployment/-/package_files/229/download),

unzip it, set it as your working directory, and follow the instructions below.

<!-- Note: This file is primarily defined to be used in the IXP documentation. However, it is also provided in the docker-deployment repository for reference. If you accessed this file from the docker-deployment repository, please be aware that the links used in this file may not work as expected. -->

## HTTPS Deployment

For HTTPS deployment, you need to generate HTTPS certificates. In this configuration, the

certificates are generated via [Certbot](https://certbot.eff.org/) using Lets Encrypt.

<!-- TODO: update package file for Dux -->

This can be done via the `./cert_script.sh` script, which automatically generates the certificate in

the current directory. Invoke the script like so, substituting the placeholders for their respective

values:

For deployment of the IXP with SSL certificates generated via

[Certbot](https://certbot.eff.org/) by Let's Encrypt, download the latest

compose preset folder

[here](https://gitlab.fi.muni.cz/inject/docker-deployment/-/package_files/229/download).

After downloading the preset, unzip it, set the unzipped folder as your working

directory, and follow the instructions below.

### Certificate Generation

The certificates can be generated using the `cert_script.sh` script, which

automates the process. The script will:

1. generate or renew the SSL certificates for the specified domain

2. and reload the Nginx configuration to apply the new certificates (if

    running).

#### Usage

1. Ensure the script is executable:

    ```bash

./cert_script.sh <email-address> <domain>

    chmod +x ./cert_script.sh

    ```

After the certificate has been generated, an email will be sent to the provided address with

additional information about the certificate.

2. Invoke the script as follows, substituting the placeholders for their

    respective values:

The same script can be used to renew the certificates.

    ```bash

    ./cert_script.sh <email-address> <domain>

    ```

Example usage:

    Example:

    ```bash

    ./cert_script.sh admin@inject.fi.muni.cz inject.fi.muni.cz

    ```

Please note that by executing this script, you're agreeing to Certbot's TOS and Privacy Policy, and

your email will be used for essential communication about expiration notices.

#### Notes:

- By executing this script, you agree to Certbot's Terms of Service and Privacy

    Policy. Your email will be used for essential communication, such as

    expiration notices.

### (Optional) Automatic Certificate Renewal

To ensure that your certificates are renewed automatically before they expire,

you can set up a cron job to run the `cert_script.sh` script periodically.

#### Setting Up the Cron Job

1. Open the crontab editor:

    ```bash

    crontab -e

    ```

2. Add the following line to schedule the script to run on the 1st day of every

    month at midnight. Don't forget to substitute the placeholders for their

    respective values:

    ```bash

    0 0 1 * * cd <project-root> && ./cert_script.sh <email-address> <domain> >> ./cert_renewal.log 2>&1

    ```

    Example:

    ```bash

    0 0 1 * * cd /home/inject/https && ./cert_script.sh admin@inject.fi.muni.cz inject.fi.muni.cz >> ./cert_renewal.log 2>&1

    ```

    **If you want to be notified via email when the renewal process fails, you

    can modify the cronjob using a temporary log file:**

    1. Make sure you have a working Postfix Service set up.

    2. Use the following cronjob, and add a `MAILTO` variable at the top of the

        crontab file to specify the recipient email address. The cron job will

        then send an email with the output of the script if it fails:

        ```bash

        MAILTO=<your-email-address>

        0 0 1 * * cd <project-root> && ./cert_script.sh <email-address> <domain> > ./cert_renewal_tmp.log 2>&1 && cat ./cert_renewal_tmp.log >> ./cert_renewal.log || cat ./cert_renewal_tmp.log

        ```

        Example:

        ```bash

        MAILTO=admin@inject.fi.muni.cz

        0 0 1 * * cd /home/inject/https && ./cert_script.sh admin@inject.fi.muni.cz inject.fi.muni.cz > ./cert_renewal_tmp.log 2>&1 && cat ./cert_renewal_tmp.log >> ./cert_renewal.log || cat ./cert_renewal_tmp.log

        ```

3. Save and exit the crontab editor.

4. Check the logs to verify the cron job is running as expected:

    ```bash

    cat ./cert_renewal.log

    ```

#### Rootless Docker

If you are using _Rootless Docker_, you'll have to pass the `DOCKER_HOST`

variable to the script in the cron job. First, find the value of `DOCKER_HOST`

by running the following command:

```bash

echo $DOCKER_HOST

```

Then, modify the cron job to include the `DOCKER_HOST` variable.

Without the email notification, the cron job would look like this:

```bash

0 0 1 * * cd <project-root> && DOCKER_HOST="<docker-host>" ./cert_script.sh <email-address> <domain> >> ./cert_renewal.log 2>&1

```

With the email notification, it would look like this:

```bash

MAILTO=<your-email-address>

0 0 1 * * cd <project-root> && DOCKER_HOST="<docker-host>" ./cert_script.sh <email-address> <domain> > ./cert_renewal_tmp.log 2>&1 && cat ./cert_renewal_tmp.log >> ./cert_renewal.log || cat ./cert_renewal_tmp.log

```

### Next Steps

After adding the certificates, proceed with the installation as described in the

[installation guide](../overview.md).

For version 3.0.0 of IXP, download the compose preset folder for HTTPS Deployment with your own

certificates

[here](https://gitlab.fi.muni.cz/inject/docker-deployment/-/package_files/230/download), unzip it,

set it as your working directory, and follow the instructions below.

<!-- Note: This file is primarily defined to be used in the IXP documentation. However, it is also provided in the docker-deployment repository for reference. If you accessed this file from the docker-deployment repository, please be aware that the links used in this file may not work as expected. -->

## HTTPS Deployment with your own certificates (advanced)

## HTTPS Deployment with your own certificates

For HTTPS deployment with your own certificates, add `fullchain.pem` and `privkey.pem` into the

`./certificates` directory. If the format of the keys or selection of keys does not suffice, modify

the `nginx.conf.template` file and change the related configuration on line `:32-33`.

<!-- TODO: update package file for Dux -->

Docker compose mounts the `./certificates` folder as `/etc/nginx/certificates/` in the Nginx

container.

For deployment of the IXP with your own SSL certificates, download the latest

compose preset folder

[here](https://gitlab.fi.muni.cz/inject/docker-deployment/-/package_files/230/download).

After downloading the preset, unzip it, set the unzipped folder as your working

directory, and follow the instructions below.

### Adding Your Own Certificates

Add `fullchain.pem` and `privkey.pem` into the `./certificates` directory. If

the format of the keys or selection of keys does not suffice, modify the

`nginx.conf.template` file and change the related configuration on the line

`:32-33`.

### Notes:

- Docker compose mounts the `./certificates` folder as

    `/etc/nginx/certificates/` in the Nginx container.

- For development purposes, you might want to use self-signed certificates. You

    can generate them using the following command:

    ```bash

    openssl req -x509 -nodes -days 365 -newkey rsa:2048 \

        -keyout privkey.pem -out fullchain.pem \

        -subj "/C=US/ST=State/L=City/O=Organization/OU=Unit/CN=localhost"

    ```

### Next Steps

After adding the certificates, proceed with the installation as described in the

[installation guide](../overview.md).

<!-- Note: This file is primarily defined to be used in the IXP documentation. However, it is also provided in the docker-deployment repository for reference. If you accessed this file from the docker-deployment repository, please be aware that the links used in this file may not work as expected. -->

# Installation

The INJECT Exercise Platform (IXP) comprises two main components: the frontend and the backend. This

separation allows for modular development, easier maintenance, and scalability of the platform.

Below, we'll walk you through the unified process of installation for frontend as well as for

backend.

The INJECT Exercise Platform (IXP) comprises two main components: the frontend

and the backend. This separation allows for modular development, easier

maintenance, and scalability of the platform. Below, we'll walk you through the

unified installation process for the frontend and backend.

For a deeper understanding of the overall architecture of the IXP, you can refer to the

[architecture overview](../architecture/overview.md) in the documentation.

For a deeper understanding of the overall architecture of the IXP, you can refer

to the [architecture overview](../architecture/overview.md) in the

documentation.

## Prerequisites

Before you begin, ensure that you have the following:

- A server with at least 2 core CPU and 8 GB RAM

- A 64-bit x86 architecture

- Root or sudo access to the server

- At least 4 GB of disk space, although more is necessary for long-term storage of exercise data

- a server with at least a 2-core CPU and 8 GB RAM,

- a 64-bit x86 architecture,

- root or sudo access to the server,

- and at least 4 GB of disk space, although more is necessary for long-term

    storage of exercise data.

These requirements ensure that the backend server can handle data processing efficiently while

serving the frontend interface smoothly for the most basic needs.

These requirements ensure that the backend server can handle data processing

efficiently while serving the frontend interface smoothly for the most basic

needs.

The performance mainly depends on one factor, which is _the number of teams in all currently running

exercises_. Please refer to the table below for our recommended hardware setups based on this value.

The performance mainly depends on one factor, which is _the number of teams in

all currently running exercises_. Please refer to the table below for our

recommended hardware setups based on this value.

| Number of teams | CPU Cores (Worker Count) | RAM  |

| --------------- | ------------------------ | ---- |

| 21 - 50         | 4 (8)                    | 16GB |

| 51 - 100        | 8 (16)                   | 16GB |

We cannot give a good recommendation for disk space, as that only depends on the number of exercises

and definitions stored at the same time.

We cannot give a good recommendation for disk space, as that only depends on the

number of exercises and definitions stored at the same time.

### Software Requirements

!!! Disclaimer

    If you are upgrading an existing installation, please note that all stored data will likely be lost

    during the upgrade process, as we cannot guarantee compatibility between different versions of the

    platform. To avoid problems during the upgrade process, please make sure to stop the running

    containers first by executing `docker compose down` and remove the volumes by executing

    `docker volume rm inject-data inject-pgdata`. Also make sure to rebuild the containers by executing

    `docker compose build` before running `docker compose up` again.

- Linux operating system: Debian 11 or 12 is recommended

- [Docker Engine](https://docs.docker.com/engine/install/).

- [Docker Compose](https://docs.docker.com/compose/install/linux/) with recommended version v2.27.0

- [Docker Engine](https://docs.docker.com/engine/install/)

- [Docker Compose](https://docs.docker.com/compose/install/linux/) with

    recommended version v2.27.0

Make sure to install Docker and Docker Compose before proceeding with the installation.

Make sure to install Docker and Docker Compose before proceeding with the

installation.

## Installation

### 2. Download the source code of the frontend and the backend:

The frontend and backend releases follow a modified version of

[Semantic Versioning](https://semver.org/). Each release is tagged with a version number in the

format `vX.Y.Z`, where:

[Semantic Versioning](https://semver.org/). Each release is tagged with a

version number in the format `vX.Y.Z`, where:

- `X` is the major version,

- `Y` is the minor version,

- `Z` is the patch version.

The major version is incremented for significant changes to the whole platform. Such releases are

deployed together with a new version of the documentation and exercise definitions.

The major version is incremented for significant changes to the whole platform.

Such releases are deployed together with a new version of the documentation and

exercise definitions.

The minor version is incremented for changes to the API. Because of this, **only the frontend and

backend with the same major and minor version are compatible with each other**. For example,

`v3.0.0` of the frontend is compatible with `v3.0.0` of the backend but not with `v2.0.0` of the

backend. Similarly, `v3.1.0` of the frontend is compatible with `v3.1.0` of the backend, but not

The minor version is incremented for changes to the API. Because of this, **only

the frontend and backend with the same major and minor version are compatible

with each other**. For example, `v3.0.0` of the frontend is compatible with

`v3.0.0` of the backend but not with `v2.0.0` of the backend. Similarly,

`v3.1.0` of the frontend is compatible with `v3.1.0` of the backend, but not

with `v3.0.0` of the backend.

The patch version is incremented for bug fixes and minor improvements. Such releases are created for

the frontend and backend separately. **The patch version of the frontend and backend does not have

to match.** For example, `v3.0.1` of the frontend is compatible with `v3.0.0` of the backend, but

not with `v2.0.0` of the backend.

The patch version is incremented for bug fixes and minor improvements. Such

releases are created for the frontend and backend separately. **The patch

versions of the frontend and backend do not have to match.** For example,

`v3.0.1` of the frontend is compatible with `v3.0.0` of the backend, but not

with `v2.0.0` of the backend.

The releases can be downloaded from the following links:

### 3. Unzip the downloaded archives, move them inside the compose preset folder (`https` or `https-owncert`, depending on which one you chose for generating TLS certificates), and rename the unzipped folders to `frontend` and `backend` respectively.

Having the source code available in folders named `frontend` and `backend` is crucial for the

deployment script to work.

The deployment script expects the source code in folders named `frontend` and

`backend`.

### 4. Set up the `.env` file in the root directory (`https` or `https-owncert`).

Follow the setup guide [here](./setup.md#environment-variables). Especially make sure that:

Follow the setup guide [here](./setup.md#environment-variables). Especially make

sure that:

- `INJECT_DOMAIN` is set to your desired hostname (the same one you generated the certificate for),

- and `INJECT_SECRET_KEY` is changed to a truly random string of characters of at least 50

    characters.

- `INJECT_DOMAIN` is set to your desired hostname (the same one you generated

    the certificate for)

- and `INJECT_SECRET_KEY` is changed to a truly random string of characters of

    at least 50 characters.

### 5. Make sure the prepared scripts are executable.

The following scripts are used to set up the environment. Make sure they are executable:

The following scripts are used to set up the environment. Make sure they are

executable:

- `./01-substitute-env.sh`: you can grant the executable permission via

    `chmod +x 01-substitute-env.sh`.

- `./frontend/frontend/substituteEnv.sh`: you can grant the executable permission via

    `chmod +x frontend/frontend/substituteEnv.sh`.

    `chmod +x 01-substitute-env.sh`,

- `./frontend/frontend/substituteEnv.sh`: you can grant the executable

    permission via `chmod +x frontend/frontend/substituteEnv.sh`.

### 6. Run `docker compose up`, or `docker compose up -d` to run the containers in the background.

If any errors occur, please refer to the [troubleshooting guides](./troubleshooting.md).

If any errors occur, please refer to the

[troubleshooting guides](./troubleshooting.md).

!!! Disclaimer

### 7. Add an admin (superuser) account by following [these instructions](./users.md).

    If you are upgrading an existing installation, please note that all stored data

    will be lost during the upgrade process, as we cannot guarantee compatibility

    between different versions of the platform.

    To avoid problems during the upgrade process, please stop the running containers

    and remove the volumes by executing `docker compose down -v`. Also, make sure to

    rebuild the containers by executing `docker compose up --build` when starting

    them again.

### 7. Add an admin account by following [these instructions](./users.md).

## Conclusion

By following the installation guide, you'll be able to successfully set up and deploy the IXP. After

completing the installation, you may download this

[Intro Definition](https://gitlab.fi.muni.cz/inject/inject-docs/-/raw/main/files-from-repos/intro-definition.zip?ref_type=heads&inline=false)

By following the installation guide, you'll be able to set up and deploy the

IXP. After completing the installation, you may download the

[Intro Definition](https://gitlab.fi.muni.cz/inject/inject-docs/-/raw/dux/files-from-repos/intro-definition.zip?ref_type=heads&inline=false)

and try to upload it to test the platform's functionality.

If you encounter any bugs, please refer to the [Known Issues and Fixes](../../known-issues.md) page

for troubleshooting steps and solutions. If you require further assistance, don't hesitate to report

them to us. The [Report issue](../../report-issue.md) page includes instructions on how to report

bugs.

If you encounter any bugs, please refer to the

[Known Issues and Fixes](../../known-issues.md) page for troubleshooting steps

and solutions. If you encounter any other issues, don't hesitate to report them

to us through the [Report Issue](../../report-issue.md) page.

## Backup

If you want to back up your IXP installation, it's advised to back up:

- data located in the `inject-data` and the `inject-pgdata` docker volume,

- and the `INJECT_SECRET_KEY` variable. This key is critical to ensure proper

    functioning of AAI: if the same database is used with a different key, users

    will not be able to log in.

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