DailyRotate

[neilyoung]

I was intending to setup a daily rotating file (or better two). Did that yesterday. As result I have zip files for each hour since yesterday.

"winston": "^3.2.1",
"winston-daily-rotate-file": "^4.7.1"

My code:

let  { createLogger, format, transports } = require('winston')
require('winston-daily-rotate-file')

// The format of our log traces
let traceFormat = format.combine(
    format.timestamp(),
    format.prettyPrint(),
    format.splat(),
    format.colorize({ all: true }),
    format.printf(info => `${info.timestamp} ${info.level}: ${info.message}`)
)

let error_log_transport = new transports.DailyRotateFile({
    filename: 'error-%DATE%.log',
    datePattern: 'YYYY-MM-DD-HH',
    zippedArchive: true,
    maxSize: '20m',
    maxFiles: '14d',
    level: 'error',
    format: traceFormat
})

let combined_log_transport = new transports.DailyRotateFile({
    filename: 'combined-%DATE%.log',
    datePattern: 'YYYY-MM-DD-HH',
    zippedArchive: true,
    maxSize: '20m',
    maxFiles: '14d',
    format: traceFormat
})

// Create the logger object
logger = createLogger({
    level: 'info',
    format: format.json(),
    transports: [
        error_log_transport, combined_log_transport
    ]
})

The logging directory:

-rw-rw-r-- 1 ubuntu ubuntu  2604 Jun  8 18:11 combined-2022-06-08-17.log.gz
-rw-rw-r-- 1 ubuntu ubuntu  1656 Jun  8 19:05 combined-2022-06-08-18.log.gz
-rw-rw-r-- 1 ubuntu ubuntu 17380 Jun  8 20:01 combined-2022-06-08-19.log.gz
-rw-rw-r-- 1 ubuntu ubuntu  1095 Jun  8 21:01 combined-2022-06-08-20.log.gz
-rw-rw-r-- 1 ubuntu ubuntu   980 Jun  8 22:06 combined-2022-06-08-21.log.gz
-rw-rw-r-- 1 ubuntu ubuntu  3050 Jun  8 23:11 combined-2022-06-08-22.log.gz
-rw-rw-r-- 1 ubuntu ubuntu   574 Jun  9 00:03 combined-2022-06-08-23.log.gz
-rw-rw-r-- 1 ubuntu ubuntu 26067 Jun  9 01:07 combined-2022-06-09-00.log.gz
-rw-rw-r-- 1 ubuntu ubuntu  6082 Jun  9 02:00 combined-2022-06-09-01.log.gz
-rw-rw-r-- 1 ubuntu ubuntu  2539 Jun  9 03:15 combined-2022-06-09-02.log.gz
-rw-rw-r-- 1 ubuntu ubuntu   942 Jun  9 04:03 combined-2022-06-09-03.log.gz
-rw-rw-r-- 1 ubuntu ubuntu   416 Jun  9 05:01 combined-2022-06-09-04.log.gz
-rw-rw-r-- 1 ubuntu ubuntu  1330 Jun  9 06:10 combined-2022-06-09-05.log.gz
-rw-rw-r-- 1 ubuntu ubuntu   162 Jun  9 11:24 combined-2022-06-09-06.log.gz
-rw-rw-r-- 1 ubuntu ubuntu  1749 Jun  9 12:01 combined-2022-06-09-11.log.gz
-rw-rw-r-- 1 ubuntu ubuntu  1438 Jun  9 13:00 combined-2022-06-09-12.log.gz
-rw-rw-r-- 1 ubuntu ubuntu   348 Jun  9 14:25 combined-2022-06-09-13.log.gz
-rw-rw-r-- 1 ubuntu ubuntu   430 Jun  9 15:10 combined-2022-06-09-14.log.gz

I was just expecting one file per day. Where is the fault?

[neilyoung]

Maybe the date pattern should be better

'YYYY-MM-DD'