Logs

Logs are written to standard output by default. They can be written to rolling log files with the --log-dir <dir> flag. The log level can be set with the RUST_LOG environment variable. The defaults are generally sufficient for most users but can be adjusted to provide more or less information. Different modules can have different log levels, and the log level can be set to trace, debug, info, warn, error, or off.

❯ RUST_LOG=info,forest_filecoin=debug forest --chain calibnet

2024-08-28T12:49:59.830012Z  INFO forest_filecoin::daemon::main: Using default calibnet config
2024-08-28T12:49:59.834109Z  INFO forest_filecoin::daemon: Starting Forest daemon, version 0.19.2+git.74fd562acce
2024-08-28T12:49:59.834123Z DEBUG forest_filecoin::daemon: Increased file descriptor limit from 1024 to 8192
2024-08-28T12:49:59.834164Z DEBUG forest_filecoin::libp2p::keypair: Recovered libp2p keypair from /home/rumcajs/.local/share/forest/libp2p/keypair

tip

Enabling trace or debug logging can generate gargantuan log files (gigabytes per minute). Make sure to adjust the log level to your needs.

Sending logs to Loki is also possible. Pass --loki to the Forest daemon to enable it. The logs are sent to Loki via the HTTP API. The Loki endpoint can be set with the --loki-endpoint flag. The default endpoint is http://localhost:3100.