stderr

STDOUT & STDERR

By just using the option log the output file combine the standard output and the standard error, in case a file is required per each output the stderr could be used, for example:

cmd: command
log:
  file: /var/log/app.log
  age: 86400 # seconds
  num: 7     # int
  size: 1    # MegaBytes
stderr:
  file: /var/log/app-error.log
  age: 86400 # seconds
  num: 7     # int
  size: 1    # MegaBytes
  timestamp: true # will add timesamp to log

In this case only the STDOUT will be written to /varlog/app.log with out timestamp prefix, and the STDERR will be written to /varlog/app-error.log having the timestamp as a prefix.

If only STDERR is required this could be used:

cmd: command
stderr:
  file: /var/log/app-error.log
  age: 86400 # seconds
  num: 7     # int
  size: 1    # MegaBytes
  timestamp: true # will add timesamp to log

By default the timestamp is set to false.