Appendix A. Terminology and commands Learn more about the rpm ostree terminology and commands. A.1. OSTree and rpm-ostree terminology Following are some helpful terms that are used in context to OSTree and rpm-ostree images. Table A.1. OSTree and rpm-ostree terminology Term Definition OSTree A tool used for managing Linux-based operating system versions. The OSTree tree view is similar to Git and is based on similar concepts. rpm-ostree A hybrid image or system package that hosts operating system updates. Commit A release or image version of the operating system. RHEL image builder generates an OSTree commit for RHEL for Edge images. You can use these images to install or update RHEL on Edge servers. Refs Represents a branch in OSTree. Refs always resolve to the latest commit. For example, rhel/9/x86_64/edge . Revision (Rev) SHA-256 for a specific commit. Remote The http or https endpoint that hosts the OSTree content. This is analogous to the baseurl for a dnf repository. static-delta Updates to OSTree images are always delta updates. In case of RHEL for Edge images, the TCP overhead can be higher than expected due to the updates to number of files. To avoid TCP overhead, you can generate static-delta between specific commits, and send the update in a single connection. This optimization helps large deployments with constrained connectivity. A.2. OSTree commands The following table provides a few OSTree commands that you can use when installing or managing OSTree images. Table A.2. ostree commands ostree pull ostree pull-local --repo [path] src ostree pull-local <path> <rev> --repo=<repo-path> ostree pull <URL> <rev> --repo=<repo-path> ostree summary ostree summary -u --repo=<repo-path> View refs ostree refs --repo ~/Code/src/osbuild-iot/build/repo/ --list View commits in repo ostree log --repo=/home/gicmo/Code/src/osbuild-iot/build/repo/ <REV> Inspect a commit ostree show --repo build/repo <REV> List remotes of a repo ostree remote list --repo <repo-path> Resolve a REV ostree rev-parse --repo ~/Code/src/osbuild-iot/build/repo fedora/x86_64/osbuild-demo ostree rev-parse --repo ~/Code/src/osbuild-iot/build/repo b3a008eceeddd0cfd Create static-delta ostree static-delta generate --repo=[path] --from=REV --to=REV Sign an existing ostree commit with a GPG key ostree gpg-sign --repo=<repo-path> --gpg-homedir <gpg_home> COMMIT KEY-ID... A.3. rpm-ostree commands The following table provides a few rpm-ostree commands that you can use when installing or managing OSTree images. Table A.3. rpm-ostree commands Commands Description rpm-ostree --repo=/home/gicmo/Code/src/osbuild-iot/build/repo/ db list <REV> This command lists the packages existing in the <REV> commit into the repository. rpm-ostree rollback OSTree manages an ordered list of boot loader entries, called deployments . The entry at index 0 is the default boot loader entry. Each entry has a separate /etc directory, but all the entries share a single /var directory. You can use the boot loader to choose between entries by pressing Tab to interrupt startup. This rolls back to the state, that is, the default deployment changes places with the non-default one. rpm-ostree status This command gives information about the current deployment in use. Lists the names and refspecs of all possible deployments in order, such that the first deployment in the list is the default upon boot. The deployment marked with * is the current booted deployment, and marking with 'r' indicates the most recent upgrade. rpm-ostree db list Use this command to see which packages are within the commit or commits. You must specify at least one commit, but more than one or a range of commits also work. rpm-ostree db diff Use this command to show how the packages are different between the trees in two revs (revisions). If no revs are provided, the booted commit is compared to the pending commit. If only a single rev is provided, the booted commit is compared to that rev. rpm-ostree upgrade This command downloads the latest version of the current tree, and deploys it, setting up the current tree as the default for the boot. This has no effect on your running filesystem tree. You must reboot for any changes to take effect. Additional resources rpm-ostree man page on your system A.4. FDO automatic onboarding terminology Learn more about the FDO terminology. Table A.4. FDO terminology Commands Description FDO FIDO Device Onboarding. Device Any hardware, device, or computer. Owner The final owner of the device - a company or an IT department. Manufacturer The device manufacturer. Manufacturer server Creates the device credentials for the device. Manufacturer client Informs the location of the manufacturing server. Ownership Voucher (OV) Record of ownership of an individual device. Contains the following information: * Owner ( fdo-owner-onboarding-service ) * Rendezvous Server - FIDO server ( fdo-rendezvous-server ) * Device (at least one combination) ( fdo-manufacturing-service ) Device Credential (DC) Key credential and rendezvous stored in the device at manufacture. Keys Keys to configure the manufacturing server * key_path * cert_path * key_type * mfg_string_type: device serial number * allowed_key_storage_types: Filesystem and Trusted Platform Module (TPM) that protects the data used to authenticate the device you are using. Rendezvous server Link to a server used by the device and later on, used on the process to find out who is the owner of the device Additional resources FIDO IoT spec A.5. FDO automatic onboarding technologies Following are the technologies used in context to FDO automatic onboarding. Table A.5. OSTree and rpm-ostree terminology Technology Definition UEFI Unified Extensible Firmware Interface. RHEL Red Hat(R) Enterprise Linux(R) operating system rpm-ostree Background image-based upgrades. Greenboot Healthcheck framework for systemd on rpm-ostree . Osbuild Pipeline-based build system for operating system artifacts. Container A Linux(R) container is a set of 1 or more processes that are isolated from the rest of the system. Coreos-installer Assists installation of RHEL images, boots systems with UEFI. FIDO FDO Specification protocol to provision configuration and onboarding devices.

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