# How to set up automatic updates on Ubuntu server

# Introduction

Setting up automatic updates can be a daunting task. But fear not, this tutorial will help you set up automatic updates correctly in less than 10 minutes.

---

## Before we start

### Preface

While this tutorial is focused on **Ubuntu Server**, it can be used for many other distributions that use the same package manager, like Ubuntu Desktop, Debian, Linux Mint, etc.

### Requirements

- An Ubuntu server
- An internet connection
- Access to your server

---

## Update

First you'll have to update to the latest package repository definition.

```sh
sudo apt update
```

---

## Install

Then, we will need to install the package that does all the magic for us, [unattended-upgrades](https://wiki.debian.org/UnattendedUpgrades).

```sh
sudo apt install -y unattended-upgrades
```

_Chances are that you already have this package installed._

---

## Configuration

Next step is to configure the package, lets start by opening the configuration file in the `nano` text editor.

```sh
sudo nano /etc/apt/apt.conf.d/50unattended-upgrades
```

```php
// ...

Unattended-Upgrade::Allowed-Origins {
        "${distro_id}:${distro_codename}";
        "${distro_id}:${distro_codename}-security";
        // Extended Security Maintenance; doesn't necessarily exist for
        // every release and this system may not have it installed, but if
        // available, the policy for updates is such that unattended-upgrades
        // should also install from here by default.
        "${distro_id}ESMApps:${distro_codename}-apps-security";
        "${distro_id}ESM:${distro_codename}-infra-security";
//      "${distro_id}:${distro_codename}-updates";
//      "${distro_id}:${distro_codename}-proposed";
//      "${distro_id}:${distro_codename}-backports";
};

// ...
```

You should read the configuration file to understand what it is doing, don't worry if you don't understand most things.

The important step is to uncomment the following lines.

```php
// Required, updates common software
"${distro_id}:${distro_codename}-updates";

// Optional, removes unused packages when updating
Unattended-Upgrade::Remove-Unused-Kernel-Packages "true";
Unattended-Upgrade::Remove-Unused-Dependencies "true";

// Optional, reboot automatically the system if needed at certain time
Unattended-Upgrade::Automatic-Reboot "true";
Unattended-Upgrade::Automatic-Reboot-Time "02:00";
```

> You can search the file with `ctrl` + `w`

Then exit `nano` with `ctrl` + `x` and press `Y` to save modifications.

---

## Enable

Now that everything is set up, lets enable the automatic updates. For this, you will need to configure one last file.

```sh
sudo nano /etc/apt/apt.conf.d/20auto-upgrades
```

The file might be empty, in that case, just paste the following.

```php
APT::Periodic::Update-Package-Lists "1";
APT::Periodic::Download-Upgradeable-Packages "1";
APT::Periodic::Unattended-Upgrade "1";
APT::Periodic::AutocleanInterval "7";
```

The values are specified in days, so auto-clean will happen every week and auto-updates every day.

---

## Test

Let's test if everything is set up correctly.

```sh
sudo unattended-upgrades --dry-run
```

This will run `unattended-upgrades` without making any real change, making sure everything is correctly set up.

---

## End

That was it, easy right?

### What's next?

You might want to [free up space on your server](https://blog.akbal.dev/how-to-free-up-space-on-ubuntu-server) after all the updates are done!

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### Conclusion

Congratulations, today you have learned how to set up and configure automatic updates on your Ubuntu server thanks to the `unattended-upgrades` package.

**Let me know if the tutorial was useful to you in the comments!**