openSUSE MicroOS

Micro Service OS providing Transactional (Atomic) Updates upon a read-only btrfs root filesystem

Designed to host container workloads with automated administration & patching. Installing openSUSE MicroOS you get a quick, small environment for deploying Containers, or any other workload that benefits from Transactional Updates. As rolling release distribution the software is always up-to-date.

MicroOS offers an offline image. The main difference between the offline and self-install/raw images are that the offline image has an installer. Raw and self-install allows for customization via combustion or manually in the image after it is written to the disk. There is an option for a real-time kernel.

Try MicroOS in VMs running on either Xen or KVM. Using a Raspberry Pi or other System on Chip hardware may use the preconfigured image together with the Combustion functionality for the boot process. Both preconfigured and self-installed images are intended to be used with Combustion written to a USB, which is driven to allow configuration on any first boot, with the option for default password protected changes.

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Philosophy

Is predictable

  • Is not altered during runtime
  • Will run the same artifacts consistently on every boot

Is scalable

  • Eliminates efforts in configuring individual instances during runtime
  • Can be rolled out easily repeatedly with predictable outcome

Is reliable

  • Automated recovery from faulty updates

Atomic Updates

Transactional Updates

Unique

By using btrfs with snapshots MicroOS uses a very space efficient way to store the file system’s history. All the configuration files in /etc are part of the snapshot and the rollback.

Flexible

  • No new package format is needed, use standard openSUSE RPMs
  • No size limitation, neither for partitions nor the operating system
  • Easy to enhance

Rollback

MicroOS is an Immutable OS, rollback is simple

  • Immutable: No changes on disk
  • Rollback by rebooting to an old BTRFS snapshot

Secure Updates

  • Get your updates via HTTPS
  • Packages and repositories are signed by our build system
  • Packages are verified
  • No updates are done in case of dependency conflicts
  • No waste of space: Filesystem snapshots get deleted in case of unsuccessful updates

Workloads

Applications are installed in containers rather than the root filesystem:

  • Isolated from the core filesystem
  • Reduced ability for malicious applications to compromise the system
  • New installation without reboot
  • Update in atomic way possible (create new, kill old)
  • Easy rollback

Debugging

Debugging Toolbox Container

  • Launches privileged container
  • Root filesystem available below /media/root
  • zypper to install the necessary tools, available without reboot
  • Persistent between usages
Intel or AMD 64-bit desktops, laptops, and servers (x86_64)
ISO image (2.5 GiB)
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Self Installing Container Host (1.4 GiB)
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UEFI Arm 64-bit servers, desktops, laptops and boards (aarch64)
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PowerPC servers, little-endian (ppc64le)
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We also have Virtual Machine, Cloud, Hardware images. Check out Alternative Downloads!

Minimum

  • Memory: 1GB physical RAM + additional memory for your workload
  • Storage:
    • / (root) partition: 5GB available disk space
    • /var partition: 5GB available disk space

Recommended

  • Memory: 2GB physical RAM + additional memory for your workload
  • Storage:
    • / (root) partition: 20GB available disk space
    • /var partition: 40GB available disk space

Verifyîz vost aberwetaedje (nén rekis, po les spepieus)

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