[GitHub] [apisix] tzssangglass commented on issue #8480: bug: There is a problem with the rotation date of log-rotate plugin

[GitBox <gi...@apache.org>]

tzssangglass commented on issue #8480:
URL: https://github.com/apache/apisix/issues/8480#issuecomment-1347736650

   This is related to the server time zone.
   
   On APISIX v2.13, the `rotate_time` de is calculated as follows
   
   ```lua
   rotate_time = now_time + interval - (now_time % interval)
   ```
   
   if `now_time` is `1670904900`
   
   ```
   rotate_time = 1670904900 +  246060 - (1670904900 % 246060)
   ```
   
   `rotate_time` is `1670993460`,  when this time is reached, will use the  
   
   ```
   local now_date = os_date("%Y-%m-%d_%H-%M-%S", now_time)
   ```
   
   `os_date` will use the current time zone of server, try 
   
   ```
   resty -e "local now_date = os.date(\"%Y-%m-%d_%H-%M-%S\", ngx.time());print(now_date)"
   ```
   
   anc check time zone
   
   ```
   date -R
   Tue, 13 Dec 2022 12:34:03 +0800
   ```


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