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v0.4.1 (2020-07-13)

Security fixes

  • Patch Kubernetes for CVE-2020-8558 (#977)
  • Update tough to 0.7.1 to patch CVE-2020-15093 (#979)

OS changes

  • Add a new aws-k8s-1.17 variant for Kubernetes 1.17 (#973)
  • Confine chrony, wicked, and dbus-broker via SELinux, and persist their state to disk (#970)
  • Persist systemd journal to disk (#970)
  • Add an API for OS updates (#942, #959, #986)
  • Add migration helpers to add / remove multiple settings at once (#958)
  • Fix SELinux policy to allow CSI driver mounts and transition used by Kaniko (#983)
  • Update to new repo URL via migration to ensure signed migration support (#980)

Build changes

  • Fix environment variable override for build output directory (#963)
  • Update .dockerignore to account for the new build output directory structure (#967)
  • Remove the preview-docs task from Makefile (#969)

Documentation changes

  • Document new update APIs and add associated diagrams (#962)
  • Add ap-south-1 to supported regions (#965)
  • Fix storewolf's documentation and usage message as it expects a semver value (#957)

v0.4.0 (2020-06-25)

Breaking changes

  • Remove all permissive types from the SELinux policy (#945). Actions that were not allowed by the SELinux policy now fail instead of only being logged.

OS changes

  • Use update repository metadata and signatures to run settings migrations (#930)
  • Mount debugfs in superpowered host containers, such as the admin container, to support tools like bcc and bpftrace (#934)
  • Protect container snapshot layers in SELinux policy (#935)
  • Add POST /actions/reboot API path (#936)
  • Update tough to v0.6.0 (#944)
  • Fix behavior of signpost cancel-upgrade (#950)
  • Update to kernel 5.4.46 (#953)

Build changes

  • Canonicalize architecture names in amiize.sh (#932)
  • Split build output directories by variant and architecture (#948)
  • Move intermediate RPM output from build/packages to build/rpms (#948)
  • Fix chmod usage for building on macOS (#951)

Documentation changes

  • Document platform-specific settings in README.md (#941)

v0.3.4 (2020-05-27)

OS changes

  • Add a new Kubernetes 1.16 variant (#919)
  • Use SELinux to restrict datastore modifications (#917)
  • Add variant override to updog arguments (#923)

Build changes

  • Update systemd to v245 (#916)
  • Update build SDK to v0.11.0 (#926)
  • Allow specifying a start time for waves in updata (#927)
  • Update tough dependencies to v0.5.0 (#928)

v0.3.3 (2020-05-14)

OS changes

  • Security: update kernel to 5.4.38 (#924)

v0.3.2 (2020-04-20)

Special thanks to our first contributors, @inductor (#853), @smoser (#871), and @gliptak (#870)!

OS changes

  • Update kernel to 5.4.20 (#898)
  • Expand SELinux policy to include all classes and actions in 5.4 kernel (#888)
  • Include error messages in apiserver error responses (#897)
  • Add "logdog" to help users collect debug logs (#880)
  • Include objtool in kernel-devel for compiling external modules (#874)
  • Ignore termination signals in updog right before initiating reboot (#869)
  • Pass --containerd flag to kubelet to specify containerd socket path, fixing some cAdvisor metrics (#868)
  • Fix delay on reboot or power off (#859)
  • Add systemd.log_color=0 to remove ANSI color escapes from console log (#836)
  • Reduce containerd logging when no errors have occurred (#886)
  • Update admin container to v0.5.0 (#903)

Build changes

  • Set up GitHub Actions to test OS builds for PRs (#837)
  • Update SDK to v0.10.1 (#866)
  • Move built RPMs to build/packages (#863)
  • Bump cargo-make to 0.30.0 (#870)
  • Pass proxy environment variables through to docker containers (#871)
  • Add parse-datetime crate (#875)
  • Update third-party software packages (#895)
  • Update Rust dependencies (#896)
  • Remove unused Rust dependencies (#894)
  • Add upstream fix for arm64 in coreutils (#879)
  • Add ability to add waves using TOML files (#883)
  • Add default wave files (#881)
  • Fix migrations builds (#906)

Documentation changes

  • QUICKSTART: Clarify which setup is optional (#902)
  • QUICKSTART: add easier setup instructions using new eksctl release (#849)
  • QUICKSTART: add note about allowing SSH access (#839)
  • QUICKSTART: add section on finding AMIs through SSM parameters (#838)
  • QUICKSTART: Add supported region list (73d120c9)
  • QUICKSTART: Add info about persistent volume CSI plugin (#899)
  • QUICKSTART and README: Add appropriate ECR policy guidance (#856)
  • README: Fix feedback link to point at existing section (#833)
  • README: Add sentence about preview phase with feedback link (#832)
  • README: Fixes and updates (#831)
  • Update name of early-boot-config in API system diagram (#840)
  • Fix updater README's reference to data store version (#844)
  • Fix example wave files (#908)

v0.3.1 (2020-03-10)

OS changes

  • Log migration errors to console (#795)
  • Enable BTF debug info (CONFIG_DEBUG_INFO_BTF) (#799)
  • Move migrations from private partition to data partition (#818)
  • Add top-level model struct (#824)
  • Update ca-certificates, cni-plugins, coreutils, dbus-broker, iproute, kmod, libcap, libxcrypt, ncurses, socat, and wicked (#826)

Build changes

  • Update Rust dependencies (#798, #806, #809, #810)
  • Add additional cleanup steps to amiize.sh (#804)
  • Work around warnings for unused licenses (#827)

Documentation changes

v0.3.0 (2020-02-27)

Welcome to Bottlerocket! Bottlerocket is the new name for the OS.

In preparation for public preview, v0.3.0 includes a number of breaking changes that mean upgrades from previous versions are not possible. This is not done lightly, but had to be done to accommodate all we've learned during private preview.

Breaking Changes

  • Rename to Bottlerocket (#722, #740).
  • Change partition labels to BOTTLEROCKET-* (#726).
  • Switch to new updates repository URIs under updates.bottlerocket.aws (#778).
  • Update Kubernetes to 1.15 (#749).
  • Rename aws-k8s variant to aws-k8s-1.15 to enable versioning (#785).
  • Update Linux kernel to 5.4.16-8.72.amzn2 (#731).
  • Rename settings.target-base-url to settings.targets-base-url (#788).

OS Changes

  • Mount kernel modules and development headers into containers from a squashfs file on the host (#701).
  • Include third-party licenses at /usr/share/licenses (#723).
  • Add initial implementation of SELinux (#683, #724).
  • Support transactions in the API (#715, #727).
  • Add support for platform-specific settings like AWS region (#636).
  • Support templated settings with new tool 'schnauzer' (#637).
  • Generate container image URIs with parameterized regions using schnauzer (#638).
  • Respect update release waves when using updog check-updates (#615).
  • Fix an issue with failed updates through certain https connections (#730).
  • Add support for EC2 IMDSv2 (#705, #706, #709).
  • Remove update-checking boot service (#772).
  • Remove old migrations and mitigations that no longer apply (#774).
  • Add /os API to expose variant, arch, version, etc. (#777).
  • Update host container packages (#707).
  • Allow removing settings in migrations (#644).
  • Create abstractions for creating common migrations (#712, #717).
  • Remove the datastore version, instead use Bottlerocket version (#760).
  • Improve datastore migration naming convention and build migrations during cargo make (#704, #716).
  • Update dependencies of third-party packages in base OS (#691, #696, #698, #699, #700, #708, #728, #786).
  • Update dependencies of Rust packages (#738, #730).
  • Rename moondog to early-boot-config (#757).
  • Update admin and control containers to v0.4.0 (#789).
  • Update container runtime socket path to more common /run/dockershim.sock (#796)

Documentation

  • Add copyright statement and Bottlerocket license (#746).
  • General documentation improvements (#681, #693, #736, #761, #762).
  • Added READMEs for packages and variants (#773).
  • Split INSTALL guide into BUILDING and QUICKSTART (#780).
  • Update CNI plugin in documentation and conformance test scripts (#739).

Build Changes

  • General improvements to third-party license scanning (#686, #719, #768).
  • Add policycoreutils, secilc, and squashfs-tools to SDK (#678, #690).
  • Update to Rust 1.41 and Go 1.13.8 (#711, #733).
  • Disallow upstream source fallback by default (#735).
  • Move host, operator, and SDK containers to their own git repos (#743, #751, #775).
  • Improve the syntax of migrations listed in Release.toml (#687).
  • Add arm64 builds for host-containers (#694).
  • Build stable image paths using symlinks in build/latest/ (#767).
  • Add a set-migrations subcommand to the updata tool (#756).
  • Remove rpm_crashtraceback tag from go builds (#779).
  • Rename built artifacts to specify variant before arch (#776).
  • Update SDK to v0.9.0 (#790).
  • Fix architecture conditional in glibc spec (#787).
  • Rename the workspaces directory to sources and the workspaces package to os. (#770).

v0.2.1 (2020-01-20)

OS changes

  • Make signpost usage clearer to avoid updating into empty partition (#444).
  • Fix handling of wave bounds in updog that could result in seeing an update but not accepting it (#539).
  • Add support for query parameters in repo requests to allow for basic telemetry (#542).
  • Enable support for SELinux in OS packages (not yet enforcing) (#579).
  • Make grub reboot when config or kernel loading fails so it can try other partition sets (#585).
  • Add support for image "variants" with separate API models (#578, #588, #589, #591, #597, #613, #625, #626, #627, #653). The default variant is "aws-k8s" for Kubernetes usage, and an "aws-dev" variant can be built that has a local Docker daemon and debug tools.
  • Remove unused cri-tools package (#602).
  • Update Linux kernel to 4.19.75-28.73.amzn2 (#622).
  • Make containerd.service stop containerd-shims to fix shutdown/reboot delay (#652).
  • Ensure updog only removes known extensions from migration filenames (#662).
  • Add OS version to "pretty name" so it's visible in console log (#663).

Documentation changes

  • Reorganize "getting started" documentation for clarity (#581).
  • Fix formatting of kube-proxy options in install guide (#584).
  • Specify compatible cargo-deny version in install guide (#631).
  • Fix typos and improve clarity of install guide (#639).

Build changes

  • Add scripts to ease Kubernetes conformance testing through Sonobuoy (#530).
  • Add release metadata file to be used in future automation (#556, #594).
  • Update dependencies of third-party packages in base OS (#595).
  • Update dependencies of Rust packages (#598).
  • Update SDK container to include Rust 1.40.0, GCC 9.2, and other small fixes (#603, #628).
  • Fix aarch64 build failure for libcap (#621).
  • Add initial container definitions and scripts for CI process (#619, #624, #633, #646, #647, #651, #654, #658).

v0.2.0 (2019-12-09)

Breaking changes

  • Several settings now have added validation for their contents. Upgrades from v0.1 that use invalid settings values will result in a broken system.
    • Host container names (e.g. admin in settings.host-containers.admin) are restricted to ASCII alphanumeric characters and hyphens (#450).
    • settings.kubernetes.api-server, settings.updates.metadata-base-url and target-base-url, settings.host-containers.*.sources, and settings.ntp.time-servers are now validated to be URIs (#549).
    • settings.kubernetes.cluster_name, settings.kubernetes.node-labels, and settings.kubernetes.node-taints are now verified to fit Kubernetes naming conventions (#549).
    • Most settings values disallow multi-line strings (#453, #483).
  • Additional characters are permitted in API keys; for example, dots and slashes in Kubernetes labels. Downgrades from v0.2 that use dots and slashes in API keys will result in a broken system (#511).

OS changes

  • Add dogswatch, a Kubernetes operator for managing OS upgrades (#239).
  • More accurately represent data type of update seed (#430).
  • Retry host container pulls with exponential backoff (#433).
  • Better model startup dependencies in systemd units (#442).
  • Enable panic on disk corruption detected with dm_verity (#445).
  • Add persistent storage for host containers, mapped to /.bottlerocket/host-containers/[CONTAINER_NAME] (#450, #555).
  • Persist SSH host keys for admin container (#450).
  • Use admin container v0.2 by default (#450, #536).
  • Use control container v0.2 by default (#472, #536).
  • Print most critical errors to the console to aid debugging (#476, #479, #546).
  • Update Linux kernel to 4.19.75-27.58.amzn2 (#478).
  • Updated partitions are marked successful after services start (#481).
  • Kernel config is available at /proc/config.gz (#482).
  • Prepare tough for separate release, including:
    • Allow library consumers to override the transport mechanism (#488).
    • Merge tough_schema back into tough (#496).
    • Add locking around tough datastore write operations (#497).
  • Simplify representation of default metadata (#491).
  • apiclient (available via the host containers) exits non-zero on HTTP response errors (#498).
  • apiclient builds as a static binary (#552).
  • /proc/kheaders.tar.xz is enabled in the kernel (#557).
  • settings-committer no longer errors at boot when there are no changes to commit (#559).
  • migrator and updog set migrations executable before running to work around a v0.1.6 bug (#561, #567).

Documentation changes

  • Document how to use Bottlerocket's default for the nf_conntrack_max kernel parameter when using kube-proxy (#391).
  • Fix example user data for enabling admin container (#448).
  • Update build documentation for using Docker instead of buildkitd (#506).
  • Update recommended CNI plugin version (#507).
  • Document settings.ntp.time-servers (#550).
  • Update INSTALL.md to use the instance role created by eksctl instead of creating a new one (#569).

Build changes

  • Add updata tool, which builds update repository metadata (#265).
  • Create versioned symlinks to output images (#434).
  • Add code and CloudFormation template for TUF repository canary (#490).
  • Move the TUF client library, tough, to its own repository and crates.io packages (#499).
  • Remove build dependency on the BuildKit daemon (#506).
  • Switch to SDK container as toolchain for builds, rather than requiring local build of toolchain (#525).
  • Turn buildsys into a binary and remove the cascade feature (#562).

v0.1.6 (2019-10-21)

OS changes

  • The system fetches the pause container from ECR before starting kubelet (#382).
  • New settings: settings.kubernetes.node-labels and settings.kubernetes.node-taints (#390, #408).
  • The control container has an enable-admin-container helper (#405, #413). Made default in v0.2.0 (#472).
  • Rust dependencies updated (#410).
  • thar-be-settings added trace-level messages in the client module (#411).
  • updog no longer checks for migrations from new root images (#416).
  • pluto was cleaned up to create an HTTP connection more consistently (#419).
  • Settings that are usually generated may have defaults, and settings.kubernetes.max-pods defaults to 110 if the EC2 instance type cannot be determined (#420).
  • The admin container MOTD is clearer about where the host's filesystem is mounted (#424).
  • block-party (used in growpart and signpost) errors are better structured (#425).
  • thar-be-settings logs render errors when running in --all mode (#427).
  • Recommended sysctl settings from the Kernel Self Protection Project are now used (#435).
  • acpid is enabled by default to handle power button signals sent by EC2 on stop/restart/terminate events (#437).
  • host-ctr correctly fetches images from non-ECR registries (#439; this regression occurred after v0.1.5).

Build changes

  • amiize uses a short connection timeout when testing SSH connectivity (#409).
  • tuftool only downloads an arbitrary root.json with --allow-root-download (#421).
  • BuildKit updated to v0.6.2 (#423, #429).
  • First-party Rust code is built in the same rpmbuild invocation to improve build times (#428).
  • tuftool correctly uses the --timestamp-{version,expires} arguments instead of the --snapshot-{version,expires} arguments in the timestamp role (#438).
  • tuftool accepts relative dates (#438).

Documentation changes

  • The sources/updater crates are better documented (#381).
  • INSTALL.md's subnet selection documentation is improved (#422).