Docker容器中运行flume及启动不输出运行日志问题

flume配置文件如下：

# Name the components on this agent 
app1.sources = r1 
app1.sinks = k1 
app1.channels = c1 
# Describe/configure the source 
app1.sources.r1.type = avro 
app1.sources.r1.bind = 0.0.0.0 
app1.sources.r1.port = 44444 
# Describe the sink 
#a1.sinks.k1.type = logger 
app1.sinks.k1.type = file_roll 
app1.sinks.k1.sink.directory = /var/log/my/app1 
app1.sinks.k1.sink.rollInterval=86400 
app1.sinks.k1.sink.batchSize=100 
app1.sinks.k1.sink.serializer=text 
app1.sinks.k1.sink.serializer.appendNewline = false 
# Use a channel which buffers events in memory 
app1.channels.c1.type = memory 
app1.channels.c1.capacity = 1000 
app1.channels.c1.transactionCapacity = 100 
app1.channels.c1.byteCapacity = 100000000 
app1.channels.c1.byteCapacityBufferPercentage = 10 
# Bind the source and sink to the channel 
app1.sources.r1.channels = c1 
app1.sinks.k1.channel = c1 
# Name the components on this agent 
app2.sources = r2 
app2.sinks = k2 
app2.channels = c2 
# Describe/configure the source 
app2.sources.r2.type = avro 
app2.sources.r2.bind = 0.0.0.0 
app2.sources.r2.port = 44445 
# Describe the sink 
#a1.sinks.k1.type = logger 
app2.sinks.k2.type = file_roll 
app2.sinks.k2.sink.directory = /var/log/my/app2 
app2.sinks.k2.sink.rollInterval=86400 
app2.sinks.k2.sink.batchSize=100 
app2.sinks.k2.sink.serializer=text 
app2.sinks.k2.sink.serializer.appendNewline = false 
# Use a channel which buffers events in memory 
app2.channels.c2.type = memory 
app2.channels.c2.capacity = 1000 
app2.channels.c2.transactionCapacity = 100 
app2.channels.c2.byteCapacity = 100000000 
app2.channels.c2.byteCapacityBufferPercentage = 10 
# Bind the source and sink to the channel 
app2.sources.r2.channels = c2 
app2.sinks.k2.channel = c2

dockerfile如下：

FROM ubuntu:16.04 
MAINTAINER XXX "[email protected]" 
RUN apt-get update 
ADD jdk-8u77-linux-x64.tar.gz /usr/local/java 
RUN cp /etc/profile /etc/profile.bak 
ENV JAVA_HOME /usr/local/java/jdk1.8.0_77 
ENV PATH $JAVA_HOME/bin:$PATH 
ENV CLASSPATH .:$JAVA_HOME/lib 
ADD apache-flume-1.7.0-bin.tar.gz /usr/local/flume 
RUN apt-get install -y tzdata 
RUN ln -sf /usr/share/zoneinfo/Asia/Shanghai /etc/localtime 
RUN echo "Asia/Shanghai" > /etc/timezone 
RUN dpkg-reconfigure -f noninteractive tzdata 
ENV LANG C.UTF-8 
WORKDIR /var/log 
RUN mkdir my 
WORKDIR /var/log/my 
RUN mkdir app1 
RUN mkdir app2 
EXPOSE 44444 
EXPOSE 44445 
ENTRYPOINT (/usr/local/flume/apache-flume-1.7.0-bin/bin/flume-ng agent --conf /usr/local/flume/apache-flume-1.7.0-bin/conf -conf-file /usr/local/flume/apache-flume-1.7.0-bin/conf/flume-conf.properties --name app1 &) && (/usr/local/flume/apache-flume-1.7.0-bin/bin/flume-ng agent --conf /usr/local/flume/apache-flume-1.7.0-bin/conf -conf-file /usr/local/flume/apache-flume-1.7.0-bin/conf/flume-conf.properties --name app2 &) && /bin/bash

下面看下flume 启动不输出运行日志

问题

以前碰到的一个问题，算是一个小问题，flume 用命令

./flume-ng agent -c /opt/apps/flume/conf -f /opt/apps/flume/conf/syslog_tcp.conf -n a1 -Dflume.root.logger=INFO,console

启动的时候，flume使用的log4j不起效，不会输出日志到日志文件。

解决

在启动时去掉

-Dflume.root.logger=INFO,console

这个命令就好了。flume的log4j就正常工作了。也算是一个坑。

加上这个命令会将运行的日志在控制台输出。

总结