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Bunyan v0.15.0 Release Notes

    • 🌲 issue #48: Dtrace support! The elevator pitch is you can watch all logging from all Bunyan-using process with something like this:

      dtrace -x strsize=4k -qn 'bunyan*:::log-*{printf("%d: %s: %s", pid, probefunc, copyinstr(arg0))}'

    And this can include log levels below what the service is actually configured to log. E.g. if the service is only logging at INFO level and you need to see DEBUG log messages, with this you can. Obviously this only works on dtrace-y platforms: Illumos derivatives of SunOS (e.g. SmartOS, OmniOS), Mac, FreeBSD.

    Or get the bunyan CLI to render logs nicely:

        dtrace -x strsize=4k -qn 'bunyan*:::log-*{printf("%s", copyinstr(arg0))}' | bunyan

    See https://github.com/trentm/node-bunyan#dtrace-support for details. By Bryan Cantrill.