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Nodeos Logging

Logging for nodeos is controlled by the logging.json file. CLI options can be passed to nodeos to setup logging.json. The logging configuration file can be used to define appenders and tie them to loggers and logging levels.

Appenders

The logging library built into Antelope supports two appender types:

Console

This will output log messages to the screen. The configuration options are:

  • name - arbitrary name to identify instance for use in loggers
  • type - "console"
  • stream - "std_out" or "std_err"
  • level_colors - maps a log level to a colour
    • level - see logging levels
    • color - may be one of ("red", "green", "brown", "blue", "magenta", "cyan", "white", "console_default")
  • enabled - bool value to enable/disable the appender.

Example:

{
"name": "consoleout",
"type": "console",
"args": {
"stream": "std_out",

"level_colors": [{
"level": "debug",
"color": "green"
},{
"level": "warn",
"color": "brown"
},{
"level": "error",
"color": "red"
}
]
},
"enabled": true
}

GELF

This sends the log messages to Graylog. Graylog is a fully integrated platform for collecting, indexing, and analyzing log messages. The configuration options are:

  • name - arbitrary name to identify instance for use in loggers
  • type - "gelf"
  • endpoint - ip address and port number
  • host - Graylog hostname, identifies you to Graylog.
  • enabled - bool value to enable/disable the appender.

Example:

{
"name": "net",
"type": "gelf",
"args": {
"endpoint": "104.198.210.18:12202,
"host": <YOURNAMEHERE IN QUOTES>
},
"enabled": true
}

Loggers

The logging library built into Antelope currently supports the following loggers:

  • default - the default logger, always enabled.
  • net_plugin_impl - detailed logging for the net plugin.
  • http_plugin - detailed logging for the http plugin.
  • producer_plugin - detailed logging for the producer plugin.
  • transaction_tracing - detailed log that emits verdicts from relay nodes on the P2P network.
  • transaction_failure_tracing - detailed log that emits failed verdicts from relay nodes on the P2P network.
  • trace_api - detailed logging for the trace_api plugin.

The configuration options are:

  • name - must match one of the names described above.
  • level - see logging levels below.
  • enabled - bool value to enable/disable the logger.
  • additivity - true or false
  • appenders - list of appenders by name (name in the appender configuration)

Example:

{
"name": "net_plugin_impl",
"level": "debug",
"enabled": true,
"additivity": false,
"appenders": [
"net"
]
}

[[info]] | The default logging level for all loggers if no logging.json is provided is info. Each logger can be configured independently in the logging.json file.