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2,780 commits this week Jun 02, 2026 - Jun 09, 2026
dermetfan
dermetfan · · cardano-node
docker: move env snapshot to `/tmp`, drop dead topologyUpdater mapping 
`run-node` and `run-tracer` wrote a sourceable env file to `/usr/local/bin/env` at
every startup, which fails under `--read-only` / `readOnlyRootFilesystem`. The
file was introduced in d9c8317e5 (#2801) to feed the topologyUpdate script added the same day in
c652f1055. topologyUpdate was removed in 56266c061 and never reintroduced;
the writer was preserved by accident when 34a4796ed re-created the docker
context, along with a stale `# Mapping for topologyUpdater` comment. Across
all branches, there is noconsumer besides the deleted topologyUpdater.

The `CARDANO_*` snapshot remains useful for operators that exec into the
container and want the resolved (post-defaults) config in a shell, so the
writer is kept but redirected to `/tmp/cardano-env` (writable when `/tmp` is
mounted as tmpfs/emptyDir). A build-time symlink at `/usr/local/bin/env ->
/tmp/cardano-env` keeps the legacy path resolving in case any out-of-tree
consumer depends on it.

The variables that existed only for topologyUpdater are dropped from the
snapshot.

The README's new "Read-Only Root Filesystem" section documents the required
writable mounts, the new env-snapshot path, and how custom-mode operators
should direct any profile output to a writable mount.

In response to #6470.
4e033b84 · oci-ro · 5/43 ++ 23 --
dermetfan
dermetfan · · cardano-node
nixos: gate RTS stats/profiling flags + add `profilingoutputdir` 
The cardano-node and cardano-tracer service modules unconditionally emitted
`--machine-readable -tcardano-node.stats -pocardano-node` in the default
`profilingArgs`, regardless of `cfg.profiling`. GHC's `-tFILE` always writes the
stats file on shutdown, which broke startup on read-only filesystems even
though no profiling was configured. Gate the three flags on
`cfg.profiling != "none" || cfg.eventlog` so the default RTS command line is
empty when nothing is requested.

When profiling is enabled, the same flags now consult a new option,
`services.cardano-node.profilingOutputDir` (and the tracer equivalent), to
prefix the output file paths. The option defaults to null, preserving today's
relative-path behavior on NixOS where systemd's `WorkingDirectory` equals
`cfg.stateDir`. `scripts.nix` sets it to `/logs` for the OCI script wrappers, so
profile output under the read-only OCI image lands on the writable `/logs`
mount.

In response to #6470.
df1ef548 · oci-ro · 3/42 ++ 8 --
Showing 25 of 2780 recent commits.