CentosLinux 将 logrotate 设置为所有日志(log)的最大文件大小

它指定触发旋转的log file的大小.例如，一旦文件大小为50MB或更大，size 50M将触发日志(log)旋转.您可以使用后缀M表示兆字节，k表示千字节，G表示千兆字节.如果没有使用后缀，则表示字节.你可以在最后判断这个例子.有三个指令可供 Select :size、maxsize和minsize.根据manpage:

minsize size
              Log  files  are  rotated when they grow bigger than size bytes,
              but not before the additionally specified time interval (daily,
              weekly,  monthly, or yearly).  The related size option is simi-
              lar except that it is mutually exclusive with the time interval
              options,  and  it causes log files to be rotated without regard
              for the last rotation time.  When minsize  is  used,  both  the
              size and timestamp of a log file are considered.

size size
              Log files are rotated only if they grow bigger then size bytes.
              If size is followed by k, the size is assumed to  be  in  kilo-
              bytes.  If the M is used, the size is in megabytes, and if G is
              used, the size is in gigabytes. So size 100,  size  100k,  size
              100M and size 100G are all valid.
maxsize size
              Log files are rotated when they grow bigger than size bytes even before
              the additionally specified time interval (daily, weekly, monthly, 
              or yearly).  The related size option is  similar  except  that  it 
              is mutually exclusive with the time interval options, and it causes
              log files to be rotated without regard for the last rotation time.  
              When maxsize is used, both the size and timestamp of a log file are                  
              considered.

下面是一个例子:

"/var/log/httpd/access.log" /var/log/httpd/error.log {
           rotate 5
           mail www@my.org
           size 100k
           sharedscripts
           postrotate
               /usr/bin/killall -HUP httpd
           endscript
       }

下面是对文件/var/log/httpd/access.log和/var/log/httpd/error.log的解释.当日志(log)文件的大小超过/var/log/httpd/access.logk时，它们就会被旋转，而旧日志(log)文件在经过5次旋转后会被邮寄(未压缩)到www@my.org，而不是被删除.sharedscripts意味着postrotate脚本将只运行一次(在旧日志(log)被压缩之后)，而不是针对每个旋转的日志(log)运行一次.请注意，本节开头第一个文件名周围的双引号允许logrotate使用名称中的空格来旋转日志(log).正常的shell引用规则适用，支持,和\个字符.