Files
fips/docs/reference/cli-fips.md
T
Johnathan Corgan 682d7be69a Write the Windows service log to a rolling file
A process started by the service control manager has no standard
handles, and writes to its absent stdout report success, so everything
the daemon logged in service mode was lost. So were config-load
failures, the service's own error report and panic messages, which all
went to stderr.

In service mode the daemon now logs to C:\ProgramData\fips\fips.log.
The file is rolled at 10 MiB with four old files kept, so it takes at
most about 50 MiB. A roll that fails, for example because another
process holds the file, keeps writing to the current file and is not
retried until another 10 MiB have been written. Config-load failures,
the service error and panic messages go to the same file. A foreground
run still logs to the console, and --install-service names the log
file.

The writer is built in rather than taken from a crate, so it is tested
on every platform and adds no dependency.

The Windows ZIP's README and the fips reference now say where the
service log goes, and install-service.ps1 prints the log path.
2026-09-24 23:12:45 +00:00

4.4 KiB

fips

The FIPS mesh network daemon.

Synopsis

fips [-c FILE]

On Windows the same binary additionally accepts --install-service, --uninstall-service, and (used internally by the service control manager) --service.

Description

fips is the FIPS daemon. It loads a YAML configuration, resolves an identity, brings up the TUN adapter, listens on configured transports, authenticates peers, maintains the spanning tree, and forwards mesh traffic. There is one daemon per node.

The daemon stays in the foreground, logging to stderr, until it receives SIGINT or SIGTERM. On Windows, the service variant is controlled through the standard service control manager.

Options

Flag Argument Description
-c, --config FILE Use FILE as the configuration. Skips the default search paths.
-V — Print the short version, <version> (rev <git-hash>). The rev part is omitted when the build could not read a git revision, as in a package built from a git worktree.
--version — Print the long version: short version plus build target triple.
-h, --help — Print usage and exit.
--install-service — (Windows only) Install fips as a Windows service. Requires Administrator.
--uninstall-service — (Windows only) Uninstall the Windows service. Requires Administrator.
--service — (Windows only, internal) Run as a Windows service. Invoked by the service control manager — not for direct use.

There are no other CLI flags; all daemon behaviour is governed by the YAML configuration. See configuration.md.

Exit Codes

Code Meaning
0 Clean shutdown after SIGINT / SIGTERM.
1 Failed to load configuration, resolve identity, construct the node, or start the node. The reason is printed to stderr before exit.

Environment

Variable Description
RUST_LOG Tracing filter directive. Overrides node.log_level from the config. Examples: info, debug, fips=trace,fips::node::handlers::mmp=debug.
XDG_RUNTIME_DIR Used to derive the default control-socket path when /run/fips does not exist. See control-socket.md.
FIPS_CONFIG (Windows service mode only) Path to the configuration file when the daemon runs under the service control manager.

The daemon also clamps the nostr_relay_pool, nostr_sdk, and nostr log targets to info whenever the effective log level is below trace, so that RUST_LOG=debug does not flood the journal with raw relay frames. To see those frames, set the level to trace.

Files

fips looks for fips.yaml in the following locations, lowest to highest priority. All present files are merged in priority order; the highest-priority value wins.

Priority Path Purpose
1 /usr/local/etc/fips/fips.yaml (macOS, FreeBSD), C:\ProgramData\fips\fips.yaml (Windows), /etc/fips/fips.yaml (other Unix) System-wide defaults
2 ~/.config/fips/fips.yaml (%APPDATA%\fips\fips.yaml on Windows) User preferences
3 ~/.fips.yaml Legacy user config
4 ./fips.yaml Deployment-specific overrides

On macOS and FreeBSD both system directories are probed: /etc/fips first, then /usr/local/etc/fips, so the packaged file wins over a leftover /etc/fips copy from an earlier install. Windows likewise probes \etc\fips on the current drive, then C:\ProgramData\fips.

Adjacent to the highest-priority config file the daemon reads (or writes, on first start) the identity files:

File Mode Purpose
fips.key 0600 Bech32 nsec for the persistent identity (Unix only; Windows inherits parent ACLs).
fips.pub 0644 Bech32 npub corresponding to fips.key.

When node.identity.persistent is false (the default), a fresh keypair is written to these files on every start.

On Windows the service writes its log to C:\ProgramData\fips\fips.log, rolled at 10 MiB with four old files kept; a foreground run logs to the console.

The control socket path is derived per control-socket.md.

See also