Question

我用Log4j及其SyslogAppender向Lino syslog发送了电文。输出的信息类似:

Oct 12 09:06:03 localhost.localdomain 3364 [Thread-5] INFO TEST MESSAGE MyApplicationLogger - This is my message

我愿用管理应用程序的服务器名称取代当地主机,但似乎无法说明如何使用。我的组合文件,如果有用的话:

log4j.logger.MyApplicationLogger=INFO, SyslogAppender
log4j.appender.SyslogAppender=org.apache.log4j.net.SyslogAppender
log4j.appender.SyslogAppender.syslogHost=localhost
log4j.appender.SyslogAppender.Facility=USER
log4j.appender.SyslogAppender.layout=org.apache.log4j.PatternLayout
log4j.appender.SyslogAppender.layout.ConversionPattern= %-4r [%t] %-5p %c %x - %m%n
log4j.appender.SyslogAppender.source=My Application

Edit:计算机名称在服务器上配置,主名上报如下:

$ hostname
server12

不过,我确实注意到,东道国档案的第一线是:

127.0.0.1   localhost.localdomain localhost

然而,我犹豫不决,不能改变这种状况。

Answer 1

我对如何确定这一问题表示出看法,因此,如果其他人面临同样的问题,我也可以在此放弃解决办法。

在财产档案中:

log4j.appender.SyslogAppender.syslogHost=server12

不能肯定为什么它发挥作用,而是使用服务器名称而不是当地东道方为我工作。

Answer 2

This is what you need:

log4j.appender.SyslogAppender.header = true

Answer 3

This issue is because your machine doesn t know it s own host name. This can be demonstrated by running the command hostname as a non-privileged user.

如果你有根基的特权,你可以使用你的东道国名称。

$ hostname myServersHostname

rel=“nofollow”>man page

To make this change permanent across reboots you will need to set a configuration file somewhere in /etc (exactly which one depends on your distro).

Debian/ubuntu: /etc/hostname
Redhat/CentOS/Fedora: /etc/sysconfig/network

Answer 4

If you don t want to hard code the hostname in the log4j properties or XML file, the best solution is a combination of what is suggested by dtyler and yegor256. Make sure your hostname is set correctly, and then use log4j.appender.SyslogAppender.header = true or <param name="Header" value="true"/> in your log4j.xml

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