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pm2-jinghuan-log

v1.0.0

Published

Module to rotate logs of every pm2 application. With some extended features.

Downloads

4

Readme

Description

PM2 module to automatically rotate logs of processes managed by PM2. This is a forked version of original pm2-logrotate with some extended features.

New features in this forked version:

  • Added new configuration flag forced which specifies if logs should be rotated on rotateInterval cron.

All credits for the original rotator go to the pm2-logrotate authors and contributors

Install

pm2 install pm2-logrotate-ext

Configure

  • max_size (Defaults to 10M): When a file size becomes higher than this value it will rotate it (its possible that the worker check the file after it actually pass the limit) . You can specify the unit at then end: 10G, 10M, 10K
  • retain (Defaults to 30 file logs): This number is the number of rotated logs that are keep at any one time, it means that if you have retain = 7 you will have at most 7 rotated logs and your current one.
  • compress (Defaults to false): Enable compression via gzip for all rotated logs
  • dateFormat (Defaults to YYYY-MM-DD_HH-mm-ss) : Format of the data used the name the file of log
  • rotateModule (Defaults to true) : Rotate the log of pm2's module like other apps
  • workerInterval (Defaults to 30 in secs) : You can control at which interval the worker is checking the log's size (minimum is 1)
  • rotateInterval (Defaults to 0 0 * * * everyday at midnight): This cron is used to a force rotate when executed. We are using node-schedule to schedule cron, so all valid cron for node-schedule is valid cron for this option. Cron style :
  • TZ (Defaults to system time): This is the standard tz database timezone used to offset the log file saved. For instance, a value of Etc/GMT-1, with an hourly log, will save a file at hour 14 GMT with hour 13 GMT-1 in the log name.
  • forced (Defaults to true): Enable or disable forced rotation on rotateInterval, if set to false, rotation of the log files will occur only when max_size limit is reached.
*    *    *    *    *    *
┬    ┬    ┬    ┬    ┬    ┬
│    │    │    │    │    |
│    │    │    │    │    └ day of week (0 - 7) (0 or 7 is Sun)
│    │    │    │    └───── month (1 - 12)
│    │    │    └────────── day of month (1 - 31)
│    │    └─────────────── hour (0 - 23)
│    └──────────────────── minute (0 - 59)
└───────────────────────── second (0 - 59, OPTIONAL)

How to set these values ?

After having installed the module you have to type : pm2 set pm2-logrotate-ext:<param> <value>

e.g:

  • pm2 set pm2-logrotate-ext:max_size 1K (1KB)
  • pm2 set pm2-logrotate-ext:compress true (compress logs when rotated)
  • pm2 set pm2-logrotate-ext:rotateInterval '*/1 * * * *' (force rotate every minute)