SRE update 2025-12-19

Author: johnalotoski

blog/2025-12-19-sre.md

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+---
+title: SRE Team Update
+slug: 2025-12-19-sre
+authors: johnalotoski
+tags: [sre]
+hide_table_of_contents: false
+---
+
+## High level summary
+
+The SRE team continues work on Cardano environment improvements and general maintenance.
+
+Some notable recent changes, updates or improvements include:
+
+* Starting with the next node release version `10.6.2`, release binaries and
+  OCI images will be generated for arm64 architectures.
+
+
+## Repository Work -- Merged
+
+### Acropolis
+[acropolis PR#482](https://github.com/input-output-hk/acropolis/pull/482):
+* Removes unused packages to free up disk space for running CI tests
+
+[acropolis PR#483](https://github.com/input-output-hk/acropolis/pull/483):
+* Schedules a run of the omnibus bootstrap process every morning at 00:15
+* Fail the job if the process does not complete within 3 hours
+
+
+### Cardano-node
+[cardano-node PR#6376](https://github.com/IntersectMBO/cardano-node/pull/6376):
+* This PR improves support for multiple arches in the following ways:
+
+  1) Adds aarch64-linux nix packages, including musl static and OCI tarball generation
+     package variants;
+
+  2) Bumps GHC from `9.6.6 -> 9.6.7` as well as the cardano-automation flake
+     input for aarch64-linux support;
+
+  3) Updates the release-ghcr GHA workflow to produce linux multi-arch manifest
+     OCI and corresponding release images which auto-resolve on container pull to
+     the appropriate arch (amd64 or arm64);
+
+  4) Updates the release-upload GHA workflow to produce new linux and darwin
+     aarch64 artifacts. Produces new OCI/goarch standard name aligned default OCI
+     images.
+
+  More details available in the PR description.
+
+
+[cardano-node PR#6391](https://github.com/IntersectMBO/cardano-node/pull/6391):
+* Adds db-analyser, db-synthesizer, and db-truncater to the Cardano Node container image.
+
+
+### Devx-ci
+[devx-ci PR#136](https://github.com/input-output-hk/devx-ci/pull/136):
+* Updates hydra version from `2.28 -> 2.32` + issue patch and explicitly allows IFD
+* Applies nix version 2.32-maintenance to hydra and linux builders
+* Adds ssh stabilization params to the hydra module for connection to remote builders
+* Disables nixos optimise on hydra to avoid GC performance degradation
+* Removes the r2 wireguard tunnel from the remote builders as it is not currently required
+
+
+## Repository Work In Progress -- PRs and Branches
+
+* Cardano-mainnet: https://github.com/input-output-hk/cardano-mainnet/pull/41
+* Cardano-parts: https://github.com/input-output-hk/cardano-parts/pull/77
+* Cardano-playground: https://github.com/input-output-hk/cardano-playground/pull/53