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flume 从log4j 收集日志

1. flume 配置

# Define a memory channel called ch1 on agent1
agent1.channels.ch1.type = memory
agent1.channels.ch1.capacity = 1000
agent1.channels.ch1.transactionCapacity = 100
 

agent1.sources.avro-source1.channels = ch1
agent1.sources.avro-source1.type = avro
agent1.sources.avro-source1.bind = localhost
agent1.sources.avro-source1.port = 44445

 
# Define a logger sink that simply logs all events it receives
# and connect it to the other end of the same channel.
agent1.sinks.logger-sink1.channel = ch1
agent1.sinks.logger-sink1.type = logger
 
# Finally, now that we've defined all of our components, tell
# agent1 which ones we want to activate.
agent1.channels = ch1
agent1.sources = avro-source1
agent1.sinks = logger-sink1

source是avro类型

这里还只输出到日志，所以sink的类型是logger

2. 启动flume

flume-ng agent --conf $FLUME_HOME/conf --conf-file $FLUME_HOME/conf/log4g.conf --name agent1 -Dflume.root.logger=INFO,console

3. log4j 打印测试日志

import org.apache.log4j.Logger;

public class LoggerGenerator {

    private static Logger logger = Logger.getLogger(LoggerGenerator.class.getName());

    public static void main(String[] args) throws Exception{
        int index = 0;
        while (true){
            Thread.sleep(1000);
            logger.info("value:" + index++);
        }
    }
}

4. resources log4j 配置

log4j.rootLogger=INFO,stdout,flume

log4j.appender.stdout = org.apache.log4j.ConsoleAppender
log4j.appender.stdout.target = System.out
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss,SSS} [%t] [%c] [%p] - %m%n


log4j.appender.flume = org.apache.flume.clients.log4jappender.Log4jAppender
log4j.appender.flume.Hostname = localhost
log4j.appender.flume.Port = 44445
log4j.appender.flume.UnsafeMode = true

5. marven 依赖

<dependency>
      <groupId>org.apache.flume.flume-ng-clients</groupId>
      <artifactId>flume-ng-log4jappender</artifactId>
      <version>1.8.0</version>
    </dependency>

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