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From Brian Bockelman <bbock...@cse.unl.edu>
Subject Re: syslog-ng and hadoop
Date Thu, 20 Aug 2009 03:50:47 GMT
Hey Mike,

Yup.  We find the stock log4j needs two things:

1) Set the rootLogger manually.  The way 0.19.x has the root logger  
set up breaks when adding new appenders.  I.e., do:

log4j.rootLogger=INFO,SYSLOG,console,DRFA,EventCounter

2) Add the headers; otherwise log4j is not compatible with syslog:

log4j.appender.SYSLOG=org.apache.log4j.net.SyslogAppender
log4j.appender.SYSLOG.facility=local0
log4j.appender.SYSLOG.layout=org.apache.log4j.PatternLayout
log4j.appender.SYSLOG.layout.ConversionPattern=%p %c{2}: %m%n
log4j.appender.SYSLOG.SyslogHost=red
log4j.appender.SYSLOG.threshold=ERROR
log4j.appender.SYSLOG.Header=true
log4j.appender.SYSLOG.FacilityPrinting=true

Brian

On Aug 19, 2009, at 6:32 PM, Mike Anderson wrote:

> Has anybody had any luck setting up the log4j.properties file to  
> send logs
> to a syslog-ng server?
> My log4j.properties excerpt:
> log4j.appender.SYSLOG=org.apache.log4j.net.SyslogAppender
> log4j.appender.SYSLOG.syslogHost=10.0.20.164
> log4j.appender.SYSLOG.layout=org.apache.log4j.PatternLayout
> log4j.appender.SYSLOG.layout.ConversionPattern=%d{ISO8601} %p %c: %m%n
> log4j.appender.SYSLOG.Facility=HADOOP
>
> and my syslog-ng.conf file running on 10.0.20.164
>
> source s_hadoop {
>        # message generated by Syslog-NG
>        internal();
>        # standard Linux log source (this is the default place for the
> syslog()
>        # function to send logs to)
>        unix-stream("/dev/log");
>        udp();
> };
> destination df_hadoop { file("/var/log/hadoop/hadoop.log");};
> filter f_hadoop {facility(hadoop);};
> log {
> source(s_hadoop);
> filter(f_hadoop);
> destination(df_hadoop);
> };
>
>
> Thanks in advance,
> Mike


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