Log.io - Real-time log monitoring in your browser

How does it work?

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

Log streams are defined by mapping file paths to a stream name in harvester configuration.

Users browse streams and nodes in the web UI, and activate (stream, node) pairs to view and search log messages in screen widgets.

Install Server & Harvester

Install via npm

npm install -g log.io --user "ubuntu"
Run server

log.io-server
Configure harvester

nano ~/.log.io/harvester.conf
Run harvester

log.io-harvester
Browse to http://localhost:28778

Server TCP Interface

Harvesters connect to the server via TCP, and write properly formatted strings to the socket. Third party harvesters can send messages to the server using the following commands:

Send a log message

+log|my_stream|my_node|info|this is log message\r\n

+node|my_node\r\n

+node|my_node|my_stream1,my_stream2\r\n

Remove a node

-node|my_node\r\n

Credits

Mike Smathers <msmathers@narrativescience.com> (msmathers)
Narrative Science http://narrativescience.com (NarrativeScience)

Acknowledgements

Jeremy Ashkenas (jashkenas)
Guillermo Rauch <guillermo@learnboost.com> (Guille)
Ryan Dahl <ry at tiny clouds dot org> (ry) + Joyent http://www.joyent.com/ (joyent)
turtlebender
jdrake

License

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

http://www.apache.org/licenses/LICENSE-2.0

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.