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| This release is a maintenance and bug-fix release, although there are two __possibly breaking__ changes to be aware of. | ||
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| <h4>Java 17 is now the minimum supported version</h4> | ||
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| Java 17 was released in September 2021, and has had support within GoCD since version 22.1.0, released two years ago | ||
| when it was packaged with both GoCD container images & installers (RPM, Debian, Windows, MacOS) by default. | ||
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| This has proven to be be very stable with no known issues. As such, we are now making Java 17 the minimum supported | ||
| version to reduce maintenance overhead. Note that as of early 2024 GoCD has not been officially validated against Java | ||
| 21 LTS (or intermediary versions 18-20). | ||
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| The suggested upgrade path depends on the current versions of GoCD you are running. To ensure no downtime for your agents | ||
| other than the time to bounce/upgrade your GoCD server | ||
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| * Ensure your agents are running with Java 17 | ||
| * If you are running GoCD | ||
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| * If you are running agents on GoCD 22.1.0+ with Java 17 | ||
| * No special instructions, upgrade server and agent environments in any order. | ||
| * If you are running agents with Java < 17, and agent < 22.1.0 (21.4.0?) | ||
| * Server < 22.1.0 ? | ||
| * Server >= 22.1.0 ? | ||
| * If you are running agents with Java < 17, and/or server < 22.1.0 (21.4.0?) | ||
| * Server < 22.1.0 ? | ||
| * Server >= 22.1.0 ? | ||
| * If yo | ||
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| <h4>Server Container image is now based on Wolfi OS</h4> | ||
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| The GoCD server container has always been based on a minimal Linux distribution, previously [Alpine Linux](https://alpinelinux.org/), | ||
| but from 24.1.0 has been switched to [Wolfi OS](https://github.com/wolfi-dev). Wolfi OS is a similarly minimal, | ||
| security-oriented (un)distro from the folks at [Chainguard](https://www.chainguard.dev/) which is | ||
| [optimized for supply-chain security](https://www.chainguard.dev/unchained/introducing-wolfi-the-first-linux-un-distro) - | ||
| and uses _glibc_, similar to most other distributions unlike the musl-based Alpine. | ||
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| Unfortunately, the use of Alpine has always posed difficulties due to its musl libc base. Most of the time this is an | ||
| irrelevant detail to users, however it has posed issues for GoCD packaging of Java runtime environments & providing aarch64 | ||
| availability for a variety of reasons stemming from GoCD's dependencies. While GoCD has applied relatively stable | ||
| workarounds to support Alpine, these are not recommended and have prevented providing a default GoCD server container | ||
| image for _aarch64_/_arm64_ architectures off-the-shelf. | ||
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| Wolfi uses the same `apk` package manager as Alpine, with conventional package names, and although packages cannot be | ||
| used across the two OSes, the transition should be easy for most folks. The image is now multi-architecture (`amd64`/`x64` and `aarch64`/`arm64`) | ||
| making it usable out-of-the-box within arm64 cloud instances and Apple Silicon Macs. | ||
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| If you build a child container from the [gocd-server container](https://hub.docker.com/r/gocd/gocd-server), from 24.1.0 | ||
| you will need to review your `Dockerfile` to check that | ||
| - any additional packages you need to install are [available for Wolfi](https://github.com/wolfi-dev/os). | ||
| - any pre-compiled binaries specifically compiled for musl are switched to glibc variants | ||
| packages will work just fine. | ||
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| There has previously been a non-officially documented multi-arch [server image based on CentOS Stream](https://hub.docker.com/r/gocd/gocd-server-centos-9), | ||
| which was the only option on `aarch64`. This will be __removed__, as it is unnecessary now we have a glibc-based image. | ||
| If you were using this, please switch back to `gocd/gocd-server` rather than `gocd/gocd-server-centos-*`. | ||
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| <h4>Agent container image changes</h4> | ||
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| Matching the server change, a [Wolfi-based agent image](https://hub.docker.com/r/gocdexperimental/gocd-agent-wolfi/tags) is | ||
| now available. This will become the default recommended agent image for container-based elastic agents. | ||
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| The GoCD Alpine agent images will now become a _rolling_ distribution within the [gocd-agent-alpine](https://hub.docker.com/r/gocd/gocd-agent-alpine) | ||
| repository. This means that the repository will not change for each Alpine release (3.18, 3.19 etc) any longer. Alpine releases new | ||
| versions each 6 months while maintaining very good compatibility, and maintaining different repositories added unnecessary | ||
| maintenance overhead. Each GoCD release will be based on the latest compatible Alpine release, mirroring how [gocd-agent-docker-dind](https://hub.docker.com/r/gocd/gocd-agent-docker-dind) | ||
| has always been released. | ||
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| <h4>Enhancements</h4> | ||
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| * <%= link_to_issue 12415, 'Change baseline to require Java 17 minimum' %>. | ||
| * <%= link_to_issue 12500, 'Replace Alpine with Wolfi as primary server container image, consolidating Alpine agent images' %>. | ||
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| <h4>Bug fixes</h4> | ||
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| * <%= link_to_issue 4011, 'RPM packages do not install on RHEL unless SELinux is disabled' %> | ||
| * <%= link_to_issue 12440, 'Installing Chromium on Alpine 3.18 gocd docker agent causes agent crash loop' %> | ||
| * <%= link_to_issue 12535, 'Improve performance of agents API responses and dashboard stage modal' %> | ||
| * <%= link_to_issue 12616, 'Improve performance when working with large numbers of server health warnings/errors' %> | ||
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| <h4>Security fixes</h4> | ||
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| This release fixes [CVE-2024-28866](https://github.com/gocd/gocd/security/advisories/GHSA-q882-q6mm-mgvh), a theoretical | ||
| vulnerability which has not shown to be practically exploitable. Thank you to Aviv Keller ([RedYetiDev](https://github.com/RedYetiDev)) for | ||
| discovering and responsibly disclosing this issue. | ||
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| We regularly upgrade dependencies to mitigate known vulnerabilities from third party software (regardless of | ||
| whether they are known to affect GoCD), so upgrading to the latest release is always recommended from a security perspective. | ||
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| <h4>APIs</h4> | ||
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| Improvements, deprecations and breaking changes in the API and plugin API have been moved to their respective changelogs | ||
| - <%= link_to_versioned_api '24.1.0','changes-in-24-1-0', 'API changelog for 24.1.0' %> and | ||
| <%= link_to_versioned_plugin_api '24.1.0','changes-in-gocd-24-1-0', 'Plugin API changelog for 24.1.0' %>. | ||
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| <h4>Contributors</h4> | ||
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| <%= [ | ||
| "Aravind SV", | ||
| "Aviv Keller / RedYetiDev", | ||
| "Chad Wilson", | ||
| "brewpark", | ||
| "Matthias Kraaz", | ||
| "Tim Borrowdale", | ||
| ].sort.uniq.join(', ') | ||
| %> | ||
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| <h4>Note</h4> | ||
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| A more comprehensive list of changes for this release can be found <%= link_to_full_changelog 'here.', 'Release 24.1.0' %> | ||
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| Found a security issue that needs fixing? Please report it to <%= link_to 'https://hackerone.com/gocd', 'https://hackerone.com/gocd' %> | ||
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| Please report any issues that you observe on [GitHub issues](https://github.com/gocd/gocd/issues). |