Nodejs
This article explains how to use the fluent-logger-node library.
- Basic knowledge of Node.js and NPM
- Basic knowledge of Fluentd
- Node.js 0.6 or higher
Please refer to the following documents to install fluentd.
<source>
@type forward
port 24224
</source>
<match fluentd.test.**>
@type stdout
</match>
Please restart your agent once these lines are in place.
# for rpm/deb only
$ sudo /etc/init.d/td-agent restart
{
"name": "node-example",
"version": "0.0.1",
"dependencies": {
"express": "^4.15.3",
"fluent-logger": "^2.4.0"
}
}
Now use npm to install your dependencies locally:
$ npm install
This is the simplest web app.
var express = require('express');
var logger = require('fluent-logger');
var app = express();
// The 2nd argument can be omitted. Here is a default value for options.
logger.configure('fluentd.test', {
host: 'localhost',
port: 24224,
timeout: 3.0,
reconnectInterval: 600000 // 10 minutes
});
app.get('/', function(request, response) {
logger.emit('follow', {from: 'userA', to: 'userB'});
response.send('Hello World!');
});
var port = process.env.PORT || 3000;
app.listen(port, function() {
console.log("Listening on " + port);
});
Run the app and go to
http://localhost:3000/ in your browser. This will send the logs to Fluentd.$ node index.js
The logs should be output to
/var/log/td-agent/td-agent.log or stdout of the Fluentd process via the stdout Output plugin.- List of Plugin References
For high-traffic websites (more than 5 application nodes), we recommend using a high availability configuration of td-agent. This will improve data transfer reliability and query performance.
Monitoring Fluentd itself is also important. The article below describes general monitoring methods for td-agent.
If this article is incorrect or outdated, or omits critical information, please let us know. Fluentd is a open source project under Cloud Native Computing Foundation (CNCF). All components are available under the Apache 2 License.
Last modified 3yr ago