解决Flume启动报错 java.lang.ClassNotFoundException: org.apache.zookeeper.KeeperException

nohup: ignoring input
Info: Including Hive libraries found via () for Hive access
+ exec /opt/jdk1.8.0_221/bin/java -Xmx20m -Dflume.root.logger=INFO,console -cp 'conf:/opt/apache-flume-1.9.0-bin/lib/*:/lib/*' -Djava.library.path= org.apache.flume.node.Application -z xx.xx.xx.xx:2181 -p /flumeConfig -name a139888288461393920
Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/zookeeper/KeeperException
	at org.apache.curator.framework.CuratorFrameworkFactory$Builder.build(CuratorFrameworkFactory.java:122)
	at org.apache.curator.framework.CuratorFrameworkFactory.newClient(CuratorFrameworkFactory.java:91)
	at org.apache.curator.framework.CuratorFrameworkFactory.newClient(CuratorFrameworkFactory.java:76)
	at org.apache.flume.node.AbstractZooKeeperConfigurationProvider.createClient(AbstractZooKeeperConfigurationProvider.java:87)
	at org.apache.flume.node.PollingZooKeeperConfigurationProvider.<init>(PollingZooKeeperConfigurationProvider.java:56)
	at org.apache.flume.node.Application.main(Application.java:311)
Caused by: java.lang.ClassNotFoundException: org.apache.zookeeper.KeeperException
	at java.net.URLClassLoader.findClass(URLClassLoader.java:382)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
	at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:349)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
	... 6 more
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原因：flume的lib目录缺少

两个jar包

解决方法：
（1）将两个jar包放到flume的lib目录下
（2）配置 FLUME_CLASSPATH=”zookeeper jar 的地址“.例如：FLUME_CLASSPATH="/opt/zookeeper/zookeeper-3.5.8.jar;zookeeper-jute-3.5.8.jar"。