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Michaelyang's avatar
Michaelyang
Icon for Cirrostratus rankCirrostratus
Oct 13, 2022

About log rorate

Hello, I have a question I made two settings based on the following URL https://support.f5.com/csp/article/K13367#archive 1.   mv /etc/cron.daily/logrotate /etc/cron.monthly/ 2.  tmos#modify /sy...
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  • CA_Valli's avatar
    CA_Valli
    Oct 13, 2022

    Hello, it's always best to understand impacts before applying changes 🙂 

    1. This changes logrotate schedule. It will run on a monthly basis now - meaning that your log files will be pretty heavy. 

    2. this sets the "age" of files that are eligible for being deleted by the logrotate script. In your case, archive copies 50+ days old will be removed. 

     

    So your log files will be:

    - main log file with logs of last 31 days

    - one archive copy, which has logs of 31 days ago to 62 days ago 

    - every time logrotate runs (monthly), your current log file will be moved to archive copy and archive copy (which will be average 60 days old) will be removed. 

    - please also remember that (as stated in KB) changes to log rotation schedule WILL NOT persist after an upgrade. Changes to file age WILL persist. 

CA_Valli's avatar
CA_Valli
Icon for MVP rankMVP

Hello, it's always best to understand impacts before applying changes 🙂 

1. This changes logrotate schedule. It will run on a monthly basis now - meaning that your log files will be pretty heavy. 

2. this sets the "age" of files that are eligible for being deleted by the logrotate script. In your case, archive copies 50+ days old will be removed. 

 

So your log files will be:

- main log file with logs of last 31 days

- one archive copy, which has logs of 31 days ago to 62 days ago 

- every time logrotate runs (monthly), your current log file will be moved to archive copy and archive copy (which will be average 60 days old) will be removed. 

- please also remember that (as stated in KB) changes to log rotation schedule WILL NOT persist after an upgrade. Changes to file age WILL persist. 

Michaelyang's avatar
Michaelyang
Icon for Cirrostratus rankCirrostratus
Oct 14, 2022

Hello CA_Valli,

Thank you for your teaching

Here is another question
Where will the archive copy file be placed?

Thanks a lot

  • CA_Valli's avatar
    CA_Valli
    Icon for MVP rankMVP
    Oct 14, 2022

    Archive copies will be in same directory /var/log, named <filename>.<1-50>.gz