用于监控 Gentoo 上的 nginx 日志文件的 shell 脚本在日志文件被 gzip 压缩后过期

Question

这是我previous question的后续问题

所以我有这个 shellscript 来监控 Gentoo 上的 nginx 日志文件，问题是日志文件在特定文件大小或一段时间后被重命名和 gzip，shellscript 仍在查找原始文件描述符（或 inode？ )，新的文件内容不会显示出来。

我的问题是，如何连接到 auto-gzip 脚本以让我的日志文件监控脚本重新启动以监控 新 日志文件？

顺便说一句，请不要使用 cronjob 或使用计时器来执行此操作。我想要对我的监控脚本进行近乎实时的响应。

Answer 1

为tail 使用-F 标志而不是-f 标志（或--follow=name 也可以，尽管这仅适用于Linux，而-F 也适用于BSD 和Mac OS X ):

   --retry
          keep trying to open a file even if it is inaccessible when  tail
          starts  or  if it becomes inaccessible later -- useful only with
          -f

   -f, --follow[={name|descriptor}]
          output appended data as the file grows; -f, --follow, and --fol-
          low=descriptor are equivalent

   -F     same as --follow=name --retry

   With  --follow  (-f),  tail  defaults to following the file descriptor,
   which means that even if a tail’ed file is renamed, tail will  continue
   to  track  its  end.   This  default behavior is not desirable when you
   really want to track the actual name of the file, not the file descrip-
   tor (e.g., log rotation).  Use --follow=name in that case.  That causes
   tail to track the named file by reopening it periodically to see if  it
   has been removed and recreated by some other program.