Logging in nodejs using bunyan logger

Question

I am initializing the bunyan logger in my nodejs code as below:

var log = bunyan.createLogger({
    name: \'myapp\',
    stream: process.stdout,
    level: \         


        

Answer 1

Steps to install bunyan logger:

npm install bunyan bunyan-rotating-file-stream --save

By bunyan-rotating-file-stream module we can set the logfile with datetime.

create logs folder manually.

    var bunyan  = require('bunyan');
    var RotatingFileStream = require('bunyan-rotating-file-stream');

    var applogger = new bunyan.createLogger({
        name: 'project name',            
        streams: [{
            stream: new RotatingFileStream({
                type: 'rotating-file',
                path: './logs/server-%Y%m%d.log',
                period: '1d',          // daily rotation 
                totalFiles: 2,        // keep up to 10 back copies 
                rotateExisting: true,  // Give ourselves a clean file when we start up, based on period 
                threshold: '10m',      // Rotate log files larger than 10 megabytes 
                totalSize: '20m',      // Don't keep more than 20mb of archived log files 
                gzip: true,             // Compress the archive log files to save space 
                template: 'server-%Y%m%d.log' //you can add. - _ before datestamp.
            })
        }]
    });