Real-time log monitoring in your browser
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package.json - Real-time log monitoring in your browser

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How does it work?

Harvesters watch log files for changes, send new log messages to the server, which broadcasts to web clients.

Users create stream and history screens to view and search log messages.


node.js (0.4.12) (0.8.4) (0.8.4)

forever (0.8.2)

connect (1.7.1)

underscore (1.1.7)


Harvesters & server have been tested on Ubuntu 11.04

Web clients have been tested on Chrome, Safari, and Firefox.

NOTE: is currently incompatible with node.js v0.6.x

Install log server on Machine A

  1. Install via npm

    sudo npm config set unsafe-perm true sudo npm install -g --prefix=/usr/local

  2. Launch server

    sudo server start

  3. Browse to:

Install log harvester on Machine B

  1. Install via npm

    sudo npm config set unsafe-perm true sudo npm install -g --prefix=/usr/local

  2. Configure harvester (optional; modify /etc/

  • Server host
  • Local log files
  1. Launch harvester

    sudo harvester start




Copyright 2011 Narrative Science <>

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.