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
1 2
systemctl status firewalld systemctl stop firewalld
