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SRE Team Update

· 2 min read
John Lotoski
John Lotoski
Service Reliability Engineer

High level summary​

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

Some notable recent changes, updates or improvements include:

  • For this biweekly period, SRE has been heavily engaged in support activity for the new USDCx service, now publicly announced here.

  • The Dijkstra network was respun to facilitate new genesis parameter optimizations.

Repository Work -- Merged​

Acropolis​

acropolis PR#739:

  • Create GitHub Actions for omnibus workflow, including mithril bootstrapping to a target epoch at which point integration tests and a smoke test are run. The workflow is scheduled as well as manually triggerable.

acropolis PR#744:

  • Modify tests to not wait for keyboard input if a CI environment is detected.

acropolis PR#745:

  • Add Cargo cache usage for CI GitHub Actions.

USDCx-infra​

master:

  • SRE contributed work to date.

Repository Work In Progress -- PRs and Branches​

SRE Team Update

· 3 min read
John Lotoski
John Lotoski
Service Reliability Engineer

High level summary​

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

Some notable recent changes, updates or improvements include:

  • Cardano-node 10.5.4 has been released and 10.6.2 has been pre-released and deployed to all IOE release and pre-release environments.

  • New arm64 release artifacts and OCI images are now available with node 10.6.2 pre-release.

Repository Work -- Merged​

Cardano-mainnet​

cardano-mainnet PR#41:

  • Sets cardano-node release to 10.5.4. The private IOG pools, IOGP{2..4} have been retired. All private relays have been stopped as well as the retired block forging pool machines. Includes various improvements with cardano-parts release v2026-02-12. See the PR description for additional details.

Cardano-parts​

cardano-parts release v2026-02-12:

  • This release updates cardano-node release to 10.5.4, cardano-node pre-release to 10.6.2, cardano-db-sync pre-release to 13.7.0.0 and cardano-faucet to 10.6. Dijkstra network support has been added to process-compose, recipes and scripts. The demo and demo-ng scripts have been substantially improved for Protocol Version 11 intra-era hard fork support, Constitutional Committee key voting, DRep registration, and constitution adoption. Other miscellaneous improvements and fixes are detailed in the PR description.

Cardano-playground​

cardano-playground PR#53:

  • Sets cardano-node release to 10.5.4, cardano-node pre-release to 10.6.2, cardano-db-sync pre-release to 13.7.0.0 and cardano-faucet to 10.6. Dijkstra network support has been added to recipes and scripts. The demo and demo-ng scripts have been substantially improved for Protocol Version 11 intra-era hard fork support, Constitutional Committee key voting, DRep registration, and constitution adoption. Includes various improvements with cardano-parts release v2026-02-12. See the PR description for additional details.

cardano-playground PR#54:

  • Upgrades the cardano environment switching for recipes and scripts to a sourcing method instead of the prior GDB parent shell var modification approach which has become more fragile over time.

Cardano-node​

cardano-node PR#6424:

  • Bumps cardano-node cabal version to 10.6.2
  • Bumps iohkNix for 10.6.2 configuration updates (see iohk-nix PR#609 for details)
  • Updates CI files for configuration changed in 10.6.2

cardano-node PR#6425:

  • Bumps iohk-nix for 10.5.4 preview checkpoint file, peer snapshot and ledger updates
  • Adjust CI files

Iohk-nix​

iohk-nix PR#609:

  • Adds a preview checkpoint file
  • Adds mempool timeout docs and bumps MinNodeVersion to 10.6.2
  • Adds dijkstra network config
  • Updates per environment peer-snapshot file and useLedgerAfterSlot
  • Fixes mkConfigHtml function html spacing when using multi-line strings
  • Sets mkConfigHtml to use new default tracing for the genesis file inclusion check
  • Switches Dijkstra network to GenesisMode w/ peer-snapshot as default

Repository Work In Progress -- PRs and Branches​

SRE Team Update

· 2 min read
John Lotoski
John Lotoski
Service Reliability Engineer

High level summary​

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

Some notable recent changes, updates or improvements include:

  • A cardano-node 10.5.4 release and 10.6.2 pre-release version are quite close. SRE has been iterating on candidate deployments for these versions to our infrastructure and offering feedback to relevant development teams where appropriate.

Repository Work -- Merged​

Cardano-airgap​

cardano-airgap PR#12:

  • Bumps disko to v1.13.0
  • Fixes running disko scripts in the iso environment after bumping nixpkgs by adding required deps via closure path reference to /etc/install-closure.
  • Adds binary iso-versioning, available from devShell and in the iso environment which provides relevant component version info in centered GitHub md table format.

Cardano-faucet​

cardano-faucet PR#17:

  • Updates the flake inputs and haskell dependencies of cardano-faucet. Specifically, upgrade cardano-api to 10.19 for cardano-node 10.6.x compatibility, and fix the resulting compiler errors. This prepares the faucet for functioning through the upcoming intra-era hard fork.

Iohk-nix​

cardano-node-release/10.5.4 branch:

  • Provides a preview environment checkpoint file as well as per-environment peer snapshot file and "use ledger peers after" slot updates for cardano-node release 10.5.4.

Repository Work In Progress -- PRs and Branches​

SRE Team Update

· 2 min read
John Lotoski
John Lotoski
Service Reliability Engineer

High level summary​

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

Some notable recent changes, updates or improvements include:

  • The IOG private mainnet pools were retired this week. The IOG1 public stakepool remains active and forging.

  • An internal Dijkstra network was spun up for testing of the upcoming intra-era hard fork, followed by Dijkstra hark fork testing.

Repository Work -- Merged​

Cardano-airgap​

cardano-airgap PR#11:

  • Updates to nixpkgs 25.11
  • Updates adawallet with a nixpkgs also at 25.11 and fixed docopts
  • Bumps capkgs and corresponding bech32 package

Cardano-node​

cardano-node PR#6401:

  • Bumps iohkNix flake input and adjusts configuration files for new tracing system parameter changes.

Cardano-parts​

cardano-parts PR#78:

  • Adds CI tests for process-compose validation of node and db-sync stacks on the public networks.

Devx-ci​

devx-ci PR#140:

  • Provides improvements to hydra-tools, including support for multiple GitHub organizations and GitHub app installations.

Repository Work In Progress -- PRs and Branches​

SRE Team Update

· One min read
John Lotoski
John Lotoski
Service Reliability Engineer

High level summary​

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

Much of the SRE team is on vacation during this biweekly update.

Happy holidays to all of the Cardano community!

Repository Work -- Merged​

Capkgs​

capkgs Range:

  • Updates the content address package repository CI job to use a netrc token for handling GitHub API rate limits. URL redirection handling is also added.

Devx-ci​

devx-ci PR#139:

  • Add extra x86_64-linux build farm machines ci11, ci12 to the build cluster and re-key secrets

Repository Work In Progress -- PRs and Branches​