logrotate dateformat似乎不支持％H：％M：％S [英] logrotate dateformat seems not supporting %H:%M:%S

问题描述

我是新来的logrotate。当配置使用属性 dateformat时，logrotate似乎不支持strftime％H。这里是配置：

I am newer to logrotate. when the configure comes to the property "dateformat",it seems that logrotate doesn't support strftime "%H" . here is the config:

{
    daily
    rotate  2
    size 3M
    missingok
    notifempty
    dateext
    dateformat -%Y%m%d_%H:%M:%S
    ...
}

旋转的文件格式通常看起来像：uwsgi_dev.log-20150630_％H：％M：％S，但是我想要确切的小时分钟和秒。

the rotated file format tend to look like : uwsgi_dev.log-20150630_%H:%M:%S, but I want the exact "hour minutes and seconds".

谢谢

推荐答案

支持在版本 3.9.0 中添加了％H。在早期版本中，logrotate不支持strftime％H：

Support for %H was added in version 3.9.0. In earlier versions, logrotate did not support strftime "%H:

dateformat format_string：使用类似于strftime（）的符号指定dateext的扩展名3）函数，只允许％Y％m％d和％s指定符。

dateformat format_string: Specify the extension for dateext using the notation similar to strftime(3) function. Only %Y %m %d and %s specifiers are allowed.

来自logrotate手册页 http://linux.die.net/man/8/logrotate

From the logrotate man page http://linux.die.net/man/8/logrotate

但是，您可以在dateformat字符串中使用％s ，这是自1970-01-01起的秒数。您可以设置 dateformat-％Y％m％d-％s 。每次旋转日志时，它都会产生唯一的文件名，因此您可以每天多次旋转文件。不幸的是，％s 部分不容易阅读，但是您可以使用 perl -e print scalar（localtime（1451214849 ）） 。

However, you can use %s in the dateformat string, which is the number of seconds since 1970-01-01. You can set dateformat -%Y%m%d-%s. This will produce unique filenames every time the log is rotated, so you can rotate the file multiple times a day. Unfortunately, the %s part will not be easy to read, but you can easily convert it back into a readable date with perl -e "print scalar(localtime(1451214849))".

在某些系统上， date 程序允许这样做转换只需 date -d @ 1451214849 即可（例如GNU date ）。在大多数系统上（包括Solaris date ），您可能会碰巧使用 date -d 1970-01-01 + 1451214849 sec 。请注意，Busybox date 仅支持 @ 技巧，但不支持第二个示例的复杂表达式。

On some systems, the date program allows to do such conversion easily with date -d @1451214849 (e.g. GNU date). On most systems (including e.g. Solaris date), you may have luck with syntax like date -d "1970-01-01 + 1451214849 sec". Note that Busybox date supports only the @ trick but not complex expressions of the second example.

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