Ubuntu Core documentation
Welcome to the home of Ubuntu Core documentation.
Ubuntu Core is Ubuntu, engineered for IoT and embedded systems. It’s easy to deploy, tamper-resistant and hardened against corruption.
Ubuntu Core features:
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snap-based, security first: snaps are secure, easy to build, and painless to distribute. Public/private key validation ensures what’s running is exactly what’s intended to run
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simple, consistent installation and deployment: Ubuntu Core is installed via an immutable image, which can be either installed or built specifically for your platform and application
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a read-only filesystem: apps run in isolation from each other and access to system resources is only granted with explicit permissions
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transactional updates: signed, autonomous and atomic, updates can withstand unpredictable hardware and network conditions, even to the operating system
From a single Raspberry Pi, to a deployment of tens of thousands, it’s the ideal platform for anything that needs to run securely, be ever-ready, autonomously updated, and tamper-proof.
To learn more, take a look at the highlighted documentation below, or dive into the documentation on the left.
| Discovering Ubuntu Core | |
|---|---|
| Getting started | Install and try Ubuntu Core on your own devices |
| What is Ubuntu Core | Inside Ubuntu Core’s strengths and advantages |
| Using Ubuntu Core | Access your device, install apps and manage services |
| Advanced features | |
|---|---|
| Snaps in Ubuntu Core | Discover which snaps Ubuntu Core is built upon |
| Security and sandboxing | Security policies and how they’re implemented |
| Full disk encryption | Protect the confidentiality and integrity of device data |
| Building images | |
|---|---|
| Image building | How to build images for your hardware |
| Custom images | Bespoke images for any supported platform |
| Gadget snaps | Understanding the gadget snap and system properties |
Navigation
Navigation
| Level | Path | Navlink |
|---|---|---|
| 1 | Ubuntu Core docs | |
| 0 | Using | |
| 1 | getting-started | Getting started |
| 1 | what-is-ubuntu-core | What is Ubuntu Core? |
| 1 | supported-platforms | System requirements |
| 1 | snaps-in-ubuntu-core | Snaps in Ubuntu Core |
| 1 | using-core | Using Ubuntu Core |
| 1 | security-and-sandboxing | Security and sandboxing |
| 1 | uc20 | Ubuntu Core 20 |
| 2 | uc20/inside | Inside Ubuntu Core 20 |
| 2 | uc20/install | Installing UC20 |
| 2 | uc20/full-disk-encryption | Full disk encryption |
| 2 | /uc20/storage-layout | Storage layout |
| 2 | /uc20/installation-process | Installation process |
| 2 | uc20/recovery-modes | Recovery modes |
| 2 | uc20/release-notes | Release notes |
| 0 | Building a device | |
| 1 | image-building | Image building |
| 1 | custom-images | Custom images |
| 1 | gadget-building | Building a gadget snap |
| 1 | kernel-building | Building a kernel snap |
| 1 | board-enablement | Board enablement |
| 1 | configuration-and-hooks | Configuration and hooks |
| 0 | Managing a device | |
| 1 | store-overview | Using a store |
| 1 | refresh-control | Refresh control |
| 1 | system-user | Adding a system user |
| 1 | networkmanager | Network Manager |
| 1 | bluez | Bluetooth management |
| 0 | Reference | |
| 1 | reference/assertions | Assertions |
| 2 | reference/assertions/account | account |
| 2 | reference/assertions/account-key | account-key |
| 2 | reference/assertions/model | model |
| 2 | reference/assertions/serial | serial |
| 2 | reference/assertions/snap-declaration | snap-declaration |
| 2 | reference/assertions/snap-build | snap-build |
| 2 | reference/assertions/snap-revision | snap-revision |
| 2 | reference/assertions/system-user | system-user |
| 2 | reference/assertions/validation | validation |
| 1 | gadget-snaps | Gadget snap format |
| 1 | ubuntu-core-configuration | Ubuntu Core configuration |
| 1 | reference/docs-guidelines | Documentation guidelines |
| 1 | Snapd REST API | |
| 0 | Snap documentation |
Redirects
Mapping table
| Path | Location |
|---|---|
| /core/docs/bluetooth-management | /core/docs/bluez |
| /core/docs/network-management-services | /core/docs/networkmanager |
| /core/docs/build-store | /core/docs/store-overview |
| /core/docs/validations-and-refresh-control | /core/docs/refresh-control |
| /core/docs/reference/interfaces | https://snapcraft.io/docs/supported-interfaces |
| /core/docs/guides/intro/get-started | /core/docs/getting-started |
| /core/docs/guides/build-device/board-enablement | /core/docs/board-enablement |
| /core/docs/guides/manage-devices/ | /core/docs/system-user |
| /core/docs/stacks/network/network-manager/docs | /core/docs/networkmanager |
| /core/docs/stacks/bluetooth/bluez/docs | /core/docs/bluez |
| /core/docs/guides/go-to-production/simple | /core/docs/production/simple |
| /core/docs/guides/go-to-production/advanced | /core/docs/production/advanced |
| /core/docs/guides/go-to-production/intro | /core/docs/production/intro |
| /core/docs/guides/manage-devices | /core/docs/system-user |
| /core/docs/image/custom-images | /core/docs/custom-images |
| /core/docs/build-store/refresh-control | /core/docs/refresh-control |
| /core/docs/reference/gadget | /core/docs/gadget-snap |
| /core/docs/guides/intro/security | /core/docs/security-and-sandboxing |
| /core/docs/releases/uc20 | /core/docs/uc20/release-notes |
| /core/docs/uc20 | Ubuntu Core 20 |
| /core/docs/uc20/installing | Installing Ubuntu Core 20 |
| /core/docs/uc20/release-notes | Ubuntu Core 20 release notes |
| /core/docs/network-manager-release-notes | Network Manager release notes |
| /core/docs/networkmanager | Network Manager |
| /core/docs/uc20 | Ubuntu Core 20 |
| /core/docs/ubuntu-core-20 | https://discourse.ubuntu.com/t/ubuntu-core-20/20421 |
| /core/docs/stores-and-developer-accounts | Stores and developer accounts |
| /core/docs/system-user | System user |
| /core/docs/audio-management/access-from-other-snaps | https://discourse.ubuntu.com/t/access-from-other-snaps/19900 |
| /core/docs/audio-management | Audio management |
| /core/docs/network-services | Network management & services |
| /core/docs/production/intro | Introduction to production |
| /core/docs/production/simple | Simple production model - Ubuntu store |
| /core/docs/production/advance | Advanced production model - Brand store |
| /core/docs/reference/assertions/serial | Serial assertion |
| /core/docs/reference/assertions/snap-declaration | Snap-declaration assertion |
| /core/docs/reference/assertions/validation | Validation assertion |
| /core/docs/reference/gadget-snap-forma | https://discourse.ubuntu.com/t/gadget-snap-format/19753 |
| /core/docs/reference/automatic-refreshe | Automatic refreshes |
| /core/docs/reference/core-configuration | Ubuntu Core configuration |
| /core/docs/reference/core-interfaces | Core interfaces reference |
| /core/docs/modem-manager | Install Modem Manager |