将log4j输出到rsyslog服务器

November 9th, 2011
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开通 rsyslog 远程 UDP 访问

vim /etc/rsyslog.conf

去掉下面两行前的注释

#$ModLoad imudp
#$UDPServerRun 514

并在文件的最后，加入

local9.info /var/log/local9_info.log
local9.debug /var/log/local9_debug.log

修改完后，重启 rsyslog

/etc/init.d/rsyslog restart

log4j 配置

log4j.rootLogger=debug, syslog
log4j.appender.syslog=org.apache.log4j.net.SyslogAppender
log4j.appender.syslog.Threshold=DEBUG
log4j.appender.syslog.layout=org.apache.log4j.PatternLayout
log4j.appender.syslog.layout.ConversionPattern=%-4r [%t] %-5p %c %x - %m%n
log4j.appender.syslog.Header=true
# 打印时附加发送的机器名称
log4j.appender.syslog.Facility=local9