Flume 启动例子：
flume-ng agent --conf /etc/flume-ng/conf --conf-file /etc/flume-ng/conf/flume.conf --name agent1
-Dflume.root.logger=INFO,console
[root@localhost conf]# flume-ng agent --conf /etc/flume-ng/conf --conf-file /etc/flume-ng/conf/flume.conf --name agent1 > -Dflume.root.logger=INFO,console Info: Sourcing environment configuration script /etc/flume-ng/conf/flume-env.sh Info: Including Hadoop libraries found via (/usr/bin/hadoop) for HDFS access Info: Excluding /usr/lib/hadoop/lib/slf4j-api-1.7.5.jar from classpath Info: Excluding /usr/lib/hadoop/lib/slf4j-log4j12.jar from classpath Info: Including HBASE libraries found via (/usr/bin/hbase) for HBASE access Info: Excluding /usr/lib/hbase/bin/../lib/slf4j-api-1.7.5.jar from classpath Info: Excluding /usr/lib/hbase/bin/../lib/slf4j-log4j12.jar from classpath Info: Excluding /usr/lib/hadoop/lib/slf4j-api-1.7.5.jar from classpath Info: Excluding /usr/lib/hadoop/lib/slf4j-log4j12.jar from classpath Info: Excluding /usr/lib/hadoop/lib/slf4j-api-1.7.5.jar from classpath Info: Excluding /usr/lib/hadoop/lib/slf4j-log4j12.jar from classpath Info: Excluding /usr/lib/zookeeper/lib/slf4j-api-1.7.5.jar from classpath Info: Excluding /usr/lib/zookeeper/lib/slf4j-log4j12-1.7.5.jar from classpath Info: Excluding /usr/lib/zookeeper/lib/slf4j-log4j12.jar from classpath Info: Including Hive libraries found via () for Hive access ... 2017-10-18 04:23:01,667 (lifecycleSupervisor-1-0) [INFO - org.apache.flume.node.PollingPropertiesFileConfigurationProvider.start(PollingPropertiesFileConfigurationProvider.java:61)] Configuration provider starting 2017-10-18 04:23:01,740 (conf-file-poller-0) [INFO - org.apache.flume.node.PollingPropertiesFileConfigurationProvider$FileWatcherRunnable.run(PollingPropertiesFileConfigurationProvider.java:133)] Reloading configuration file:/etc/flume-ng/conf/flume.conf 2017-10-18 04:23:01,817 (conf-file-poller-0) [INFO - org.apache.flume.conf.FlumeConfiguration.validateConfiguration(FlumeConfiguration.java:141)] Post-validation flume configuration contains configuration for agents: [] 2017-10-18 04:23:01,825 (conf-file-poller-0) [WARN - org.apache.flume.node.AbstractConfigurationProvider.getConfiguration(AbstractConfigurationProvider.java:133)] No configuration found for this host:agent1 2017-10-18 04:23:01,972 (conf-file-poller-0) [INFO - org.apache.flume.node.Application.startAllComponents(Application.java:138)] Starting new configuration:{ sourceRunners:{} sinkRunners:{} channels:{} }