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SRE Team Update

· 2 min read
John Lotoski

High level summary​

The SRE team continues work on Cardano environment improvements and general maintenance.

Some notable recent changes, updates or improvements include:

  • The cardano-node flake closure was cleaned up and optimized for an ~18% size reduction.

  • Cardano-node oci image improvements were merged and should be available with the next cardano-node release image; see the PR details below.

  • The nix hydra machine used for cardano-node builds was migrated to upgraded hardware allowing for better evaluation concurrency and therefore an enhanced dev ci experience.

  • Long cardano-node nix ci eval times were preliminarily investigated and it appears this can likely be improved significantly in the near future.

Repository Work -- Merged​

Cardano-automation​

  • Removes deprecated flake inputs for optimization purposes and adds ci via GHA. The flake optimization here is also passed to cardano-node. cardano-automation-pr-7

Cardano-node​

  • OCI improvements: adds symlinked configuration files for cardano environments, adds a new cardano-node oci image "merge" mode, improves documentation, reduces path inconsistencies between images modes (cardano-node oci script, merge, custom modes) and oci-images (cardano-node and cardano-submit-api). More detail is available in the PR description. cardano-node-pr-6110

  • Byron-to-Alonzo scripts and env clean up: removes deprecated environments and dependencies, adds testnet template support, improves the byron to alonzo script set and documents. More detail is available in the PR description. cardano-node-pr-6123

  • Flake clean up and optimization: removes uneeded inputs and overlay, applies alejandra fmt, adds alejandra to dev/devops devShell, reduces overall flake closure size by ~18%. More detail is available in the PR description. cardano-node-pr-6144

Devx-ci​

  • The nix hydra build machine was migrated to new hardware with more memory. Deprecated ziti code was cleaned up. devx-ci-commit-compare

Inputs-check​

  • The inputs-check tool was improved to make usage easier in non-flake-parts flakes, fix a top level duplicate inputs bug, improve docs with better instructions and more example usage, and add minimal ci. inputs-check-pr-1

Repository Work In Progress -- PRs and Branches​