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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:

  • Ouroboros-network-ops cluster was upgraded to the latest cardano-parts release with ssh over ssm usage.

  • The performance and tracing benchmarking cluster was upgraded to utilize ephemeral NVMe block devices for use in benchmarking ledger LMDB backend.

  • Blockperf, a software for measuring block propagation times in cardano networks, was updated to support the new tracing system.

  • Work to utilize the new tracing system as default for shipped configs such as in release artifacts, docker oci and cardano book as well as nixos module services continues and is near ready for merge. The cardano-node new tracing system related PRs currently listed in the "Repository Work In Progress" section are planned for merge prior to node 10.6.0 tagging.

Repository Work -- Merged​

Cardano-node​

  • Bumps iohkNix flake pin and updates cardano configurations to match for ci. cardano-node-pr-commit

  • Updates the nixos cardano-node service so that targetNumber* module option parameters inherit from ouroboros-network by default. cardano-node-pr-commit

Cardano-perf​

  • Upgrades the performances and tracing team's infra cluster to nixpkgs 25.05, latest colmena, fixes a wireguard startup race condition, and converts the cluster to usage of ephemeral NVMe volumes for LMDB capable benchmark testing on fast block devices. Details in the PR header. cardano-perf-pr-4

Iohk-nix​

  • Use ouroboros-network defaults for deadline and sync target related config. Update peer snapshots and useLedgerAfterSlot per env. iohk-nix-pr-601

Ouroboros-network-ops​

Repository Work In Progress -- PRs and Branches​