2019-11-04 16:03:02,954 ERROR [main] zookeeper.RecoverableZooKeeper: ZooKeeper exists failed after 4 attempts
2019-11-04 16:03:02,956 WARN  [main] zookeeper.ZKUtil: hconnection-0x7412ed6b0x0, quorum=node1:2181,node2:2181,node3:2181, baseZNode=/hbase Unable to set watcher on znode (/hbase/hbaseid)
org.apache.zookeeper.KeeperException$ConnectionLossException: KeeperErrorCode = ConnectionLoss for /hbase/hbaseid
	at org.apache.zookeeper.KeeperException.create(KeeperException.java:99)
	at org.apache.zookeeper.KeeperException.create(KeeperException.java:51)
	at org.apache.zookeeper.ZooKeeper.exists(ZooKeeper.java:1045)
	at org.apache.hadoop.hbase.zookeeper.RecoverableZooKeeper.exists(RecoverableZooKeeper.java:220)
	at org.apache.hadoop.hbase.zookeeper.ZKUtil.checkExists(ZKUtil.java:419)
	at org.apache.hadoop.hbase.zookeeper.ZKClusterId.readClusterIdZNode(ZKClusterId.java:65)
	at org.apache.hadoop.hbase.client.ZooKeeperRegistry.getClusterId(ZooKeeperRegistry.java:105)
	at org.apache.hadoop.hbase.client.ConnectionManager$HConnectionImplementation.retrieveClusterId(ConnectionManager.java:905)
	at org.apache.hadoop.hbase.client.ConnectionManager$HConnectionImplementation.<init>(ConnectionManager.java:648)
	at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
	at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
	at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
	at org.apache.hadoop.hbase.client.ConnectionFactory.createConnection(ConnectionFactory.java:238)
	at org.apache.hadoop.hbase.client.ConnectionFactory.createConnection(ConnectionFactory.java:218)
	at org.apache.hadoop.hbase.client.ConnectionFactory.createConnection(ConnectionFactory.java:119)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.jruby.javasupport.JavaMethod.invokeDirectWithExceptionHandling(JavaMethod.java:450)
	at org.jruby.javasupport.JavaMethod.invokeStaticDirect(JavaMethod.java:362)
	at org.jruby.java.invokers.StaticMethodInvoker.call(StaticMethodInvoker.java:58)
	at org.jruby.runtime.callsite.CachingCallSite.cacheAndCall(CachingCallSite.java:312)
	at org.jruby.runtime.callsite.CachingCallSite.call(CachingCallSite.java:169)
	at org.jruby.ast.CallOneArgNode.interpret(CallOneArgNode.java:57)
	at org.jruby.ast.InstAsgnNode.interpret(InstAsgnNode.java:95)
	at org.jruby.ast.NewlineNode.interpret(NewlineNode.java:104)
	at org.jruby.ast.BlockNode.interpret(BlockNode.java:71)
	at org.jruby.evaluator.ASTInterpreter.INTERPRET_METHOD(ASTInterpreter.java:74)
	at org.jruby.internal.runtime.methods.InterpretedMethod.call(InterpretedMethod.java:169)
	at org.jruby.internal.runtime.methods.DefaultMethod.call(DefaultMethod.java:191)
	at org.jruby.runtime.callsite.CachingCallSite.cacheAndCall(CachingCallSite.java:302)
	at org.jruby.runtime.callsite.CachingCallSite.callBlock(CachingCallSite.java:144)
	at org.jruby.runtime.callsite.CachingCallSite.call(CachingCallSite.java:148)
	at org.jruby.RubyClass.newInstance(RubyClass.java:822)
	at org.jruby.RubyClass$i$newInstance.call(RubyClass$i$newInstance.gen:65535)
	at org.jruby.internal.runtime.methods.JavaMethod$JavaMethodZeroOrNBlock.call(JavaMethod.java:249)
	at org.jruby.runtime.callsite.CachingCallSite.cacheAndCall(CachingCallSite.java:292)
	at org.jruby.runtime.callsite.CachingCallSite.call(CachingCallSite.java:135)
	at usr.hbase.hbase_minus_1_dot_2_dot_4.bin.hirb.__file__(/usr/hbase/hbase-1.2.4//bin/hirb.rb:131)
	at usr.hbase.hbase_minus_1_dot_2_dot_4.bin.hirb.load(/usr/hbase/hbase-1.2.4//bin/hirb.rb)
	at org.jruby.Ruby.runScript(Ruby.java:697)
	at org.jruby.Ruby.runScript(Ruby.java:690)
	at org.jruby.Ruby.runNormally(Ruby.java:597)
	at org.jruby.Ruby.runFromMain(Ruby.java:446)
	at org.jruby.Main.doRunFromMain(Main.java:369)
	at org.jruby.Main.internalRun(Main.java:258)
	at org.jruby.Main.run(Main.java:224)
	at org.jruby.Main.run(Main.java:208)
	at org.jruby.Main.main(Main.java:188)

解决办法，启动你的Zookeeper

记得启动起来以后进行查看。

如果你的Zookeeper启动起来了，还报这个错误，那么就是关闭防火墙即可

systemctl status firewalld
systemctl stop firewalld

再次输入hbase shell