Hadoop——HDFS HA部署

本文提供了一步一步的指导来部署HDFSHA集群,包括安装配置Zookeeper、格式化及启动NameNode等关键步骤,确保高可用性。

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本节目标:

掌握HDFS HA的部署

本节参考官方文档进行部署。

所需软件:JDK1.8、Hadoop2.7.6、zookeeper3.4.11

节点部署情况:

 

 

NN

DN

JN

ZK

ZKFC

master

l   

 

 

l   

l   

slave1

l   

l   

l   

l   

l   

slave2

 

l   

l   

l   

 

slave3

 

l   

l   

 

 

基于完全分布式搭建,完成HDFS HA部署。

1、安装zookeeper  /usr/local/src/zookeeper
环境变量:
vi ~/.bashrc
export ZOOKEEPER_HOME=/usr/local/src/zookeeper-3.4.11
export PATH=$PATH:$ZOOKEEPER_HOME/bin
source ~/.bashrc
进入安装目录下的conf目录下,

mv zoo_sample.cfg zoo.cfg 

添加一下配置信息:

dataDir=/usr/local/src/zookeeper-3.4.11/data
server.1=192.168.188.10:2888:3888
server.2=192.168.188.11:2888:3888
server.3=192.168.188.12:2888:3888
/usr/local/src/zookeeper/data下创建myid  ---》内容为每个机器对应的服务号1、2、3
同步zookeeper到slave1,slave2,修改环境变量,修改对应的myid

2、删除各节点上的masters。masters文件指定SNN,而HDFS HA不需要SNN。

3、删除各节点上的hdfs内容保存目录

4、hdfs-site.xml修改

<property>
  <name>dfs.nameservices</name>  --->命名服务
  <value>HDFSHA</value>
</property>
<property>
  <name>dfs.ha.namenodes.HDFSHA</name>    --->命名服务下指定两台nn
  <value>nn1,nn2</value>
</property>
<property>
  <name>dfs.namenode.rpc-address.HDFSHA.nn1</name>   --》指定rpc
  <value>master:8020</value>
</property>
<property>
  <name>dfs.namenode.rpc-address.HDFSHA.nn2</name>
  <value>slave1:8020</value>
</property>
<property>
  <name>dfs.namenode.http-address.HDFSHA.nn1</name>   --》指定http
  <value>master:50070</value>
</property>
<property>
  <name>dfs.namenode.http-address.HDFSHA.nn2</name>
  <value>slave1:50070</value>
</property>
<property>    -->指定JN
  <name>dfs.namenode.shared.edits.dir</name>
  <value>qjournal://slave1:8485;slave2:8485;slave3:8485/HDFSHA</value>
</property>
<property>  --》自动故障迁移
  <name>dfs.client.failover.proxy.provider.HDFSHA</name>
  <value>org.apache.hadoop.hdfs.server.namenode.ha.ConfiguredFailoverProxyProvider</value>
</property>
<property>    ---》指定公钥文件
  <name>dfs.ha.fencing.methods</name>
  <value>sshfence</value>
</property>
<property>
  <name>dfs.ha.fencing.ssh.private-key-files</name>
  <value>/root/.ssh/id_rsa</value>
</property>
<property>   --》指定JN中edit存放目录
  <name>dfs.journalnode.edits.dir</name>
  <value>/usr/local/src/journal/data</value>
</property>
 <property>  -->是否启用自动故障迁移
   <name>dfs.ha.automatic-failover.enabled</name>
   <value>true</value>

 </property>

5、core-site.sh
<property>
  <name>fs.defaultFS</name>
  <value>hdfs://HDFSHA</value>
</property>
 <property>  --》指定zk集群
   <name>ha.zookeeper.quorum</name>
   <value>master:2181,slave1:2181,slave2:2181</value>
 </property>

 

     <property>
        <name>hadoop.tmp.dir</name>     
        <value>/usr/localc/hadoop-2.7.6/tmp<value>
    </property> 

6、同步配置文件

scp ./*.xml slave1:/usr/local/src/hadoop-2.7.6/etc/hadoop

scp ./*.xml slave2:/usr/local/src/hadoop-2.7.6/etc/hadoop

scp ./*.xml slave3:/usr/local/src/hadoop-2.7.6/etc/hadoop

7、启动JN
slave1,slave2,slave3上执行 --> hadoop-daemon.sh start journalnode

6、在master上进行格式化,并启动NN

 hadoop namenode -format   

hadoop-daemon.sh start namenode
8、在另一个NN上执行: hdfs namenode –bootstrapStandby,同步元数据信息。

9、启动zk

zkServer.sh start

检查状态:zkServer.sh status

10、在其中一个NN上格式化zk:  hdfs zkfc -formatZK

11、启动hdfs

start-dfs.sh

12、HA检查

关闭其中一个活跃的NN,hadoop-daemon.sh stop namenode;看Standby状态的NN是否自动切换为Active。

注意:先启动zookeeper,然后启动hdfs。

 

 

 

DEPRECATED: Use of this script to execute hdfs command is deprecated. Instead use the hdfs command for it. 2025-06-18 16:50:39,734 INFO datanode.DataNode: STARTUP_MSG: /************************************************************ STARTUP_MSG: Starting DataNode STARTUP_MSG: host = LAPTOP-FK5QKFGQ/192.168.10.1 STARTUP_MSG: args = [] STARTUP_MSG: version = 3.2.2 STARTUP_MSG: classpath = 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:\pyspark\Hadoop\hadoop-3.2.2\share\hadoop\mapreduce\hadoop-mapreduce-client-nativetask-3.2.2.jar;D:\pyspark\Hadoop\hadoop-3.2.2\share\hadoop\mapreduce\hadoop-mapreduce-client-shuffle-3.2.2.jar;D:\pyspark\Hadoop\hadoop-3.2.2\share\hadoop\mapreduce\hadoop-mapreduce-client-uploader-3.2.2.jar;D:\pyspark\Hadoop\hadoop-3.2.2\share\hadoop\mapreduce\hadoop-mapreduce-examples-3.2.2.jar STARTUP_MSG: build = Unknown -r 7a3bc90b05f257c8ace2f76d74264906f0f7a932; compiled by 'hexiaoqiao' on 2021-01-03T09:26Z STARTUP_MSG: java = 1.8.0_281 ************************************************************/ 2025-06-18 16:50:45,335 INFO checker.ThrottledAsyncChecker: Scheduling a check for [DISK]file:/D:/hadoop-3.2.2/data/datanode 2025-06-18 16:50:45,420 INFO impl.MetricsConfig: Loaded properties from hadoop-metrics2.properties 2025-06-18 16:50:45,483 INFO impl.MetricsSystemImpl: Scheduled Metric snapshot period at 10 second(s). 2025-06-18 16:50:45,484 INFO impl.MetricsSystemImpl: DataNode metrics system started 2025-06-18 16:50:46,677 INFO common.Util: dfs.datanode.fileio.profiling.sampling.percentage set to 0. Disabling file IO profiling 2025-06-18 16:50:46,689 INFO datanode.BlockScanner: Initialized block scanner with targetBytesPerSec 1048576 2025-06-18 16:50:46,692 INFO datanode.DataNode: Configured hostname is LAPTOP-FK5QKFGQ 2025-06-18 16:50:46,693 INFO common.Util: dfs.datanode.fileio.profiling.sampling.percentage set to 0. Disabling file IO profiling 2025-06-18 16:50:46,695 INFO datanode.DataNode: Starting DataNode with maxLockedMemory = 0 2025-06-18 16:50:46,709 INFO datanode.DataNode: Opened streaming server at /0.0.0.0:9866 2025-06-18 16:50:46,710 INFO datanode.DataNode: Balancing bandwidth is 10485760 bytes/s 2025-06-18 16:50:46,710 INFO datanode.DataNode: Number threads for balancing is 50 2025-06-18 16:50:46,741 INFO util.log: Logging initialized @7589ms to org.eclipse.jetty.util.log.Slf4jLog 2025-06-18 16:50:51,787 INFO server.AuthenticationFilter: Unable to initialize FileSignerSecretProvider, falling back to use random secrets. 2025-06-18 16:50:51,821 INFO http.HttpRequestLog: Http request log for http.requests.datanode is not defined 2025-06-18 16:50:51,828 INFO http.HttpServer2: Added global filter 'safety' (class=org.apache.hadoop.http.HttpServer2$QuotingInputFilter) 2025-06-18 16:50:51,829 INFO http.HttpServer2: Added filter static_user_filter (class=org.apache.hadoop.http.lib.StaticUserWebFilter$StaticUserFilter) to context datanode 2025-06-18 16:50:51,829 INFO http.HttpServer2: Added filter static_user_filter (class=org.apache.hadoop.http.lib.StaticUserWebFilter$StaticUserFilter) to context logs 2025-06-18 16:50:51,830 INFO http.HttpServer2: Added filter static_user_filter (class=org.apache.hadoop.http.lib.StaticUserWebFilter$StaticUserFilter) to context static 2025-06-18 16:50:51,848 INFO http.HttpServer2: Jetty bound to port 38751 2025-06-18 16:50:51,849 INFO server.Server: jetty-9.4.20.v20190813; built: 2019-08-13T21:28:18.144Z; git: 84700530e645e812b336747464d6fbbf370c9a20; jvm 1.8.0_281-b09 2025-06-18 16:50:51,865 INFO server.session: DefaultSessionIdManager workerName=node0 2025-06-18 16:50:51,865 INFO server.session: No SessionScavenger set, using defaults 2025-06-18 16:50:51,867 INFO server.session: node0 Scavenging every 660000ms 2025-06-18 16:50:51,874 INFO handler.ContextHandler: Started o.e.j.s.ServletContextHandler@2421cc4{logs,/logs,file:///D:/pyspark/Hadoop/hadoop-3.2.2/logs/,AVAILABLE} 2025-06-18 16:50:51,874 INFO handler.ContextHandler: Started o.e.j.s.ServletContextHandler@21ba0741{static,/static,file:///D:/pyspark/Hadoop/hadoop-3.2.2/share/hadoop/hdfs/webapps/static/,AVAILABLE} 2025-06-18 16:50:51,926 INFO util.TypeUtil: JVM Runtime does not support Modules 2025-06-18 16:50:51,932 INFO handler.ContextHandler: Started o.e.j.w.WebAppContext@43f82e78{datanode,/,file:///D:/pyspark/Hadoop/hadoop-3.2.2/share/hadoop/hdfs/webapps/datanode/,AVAILABLE}{file:/D:/pyspark/Hadoop/hadoop-3.2.2/share/hadoop/hdfs/webapps/datanode} 2025-06-18 16:50:51,939 INFO server.AbstractConnector: Started ServerConnector@1e097d59{HTTP/1.1,[http/1.1]}{localhost:38751} 2025-06-18 16:50:51,940 INFO server.Server: Started @12789ms 2025-06-18 16:50:52,540 INFO web.DatanodeHttpServer: Listening HTTP traffic on /0.0.0.0:9864 2025-06-18 16:50:52,545 INFO util.JvmPauseMonitor: Starting JVM pause monitor 2025-06-18 16:50:52,545 INFO datanode.DataNode: dnUserName = aaa 2025-06-18 16:50:52,546 INFO datanode.DataNode: supergroup = supergroup 2025-06-18 16:50:52,573 INFO ipc.CallQueueManager: Using callQueue: class java.util.concurrent.LinkedBlockingQueue, queueCapacity: 1000, scheduler: class org.apache.hadoop.ipc.DefaultRpcScheduler, ipcBackoff: false. 2025-06-18 16:50:52,583 INFO ipc.Server: Starting Socket Reader #1 for port 9867 2025-06-18 16:50:52,720 INFO datanode.DataNode: Opened IPC server at /0.0.0.0:9867 2025-06-18 16:50:52,729 INFO datanode.DataNode: Refresh request received for nameservices: null 2025-06-18 16:50:52,735 INFO datanode.DataNode: Starting BPOfferServices for nameservices: <default> 2025-06-18 16:50:52,740 INFO datanode.DataNode: Block pool <registering> (Datanode Uuid unassigned) service to localhost/127.0.0.1:9000 starting to offer service 2025-06-18 16:50:52,745 INFO ipc.Server: IPC Server Responder: starting 2025-06-18 16:50:52,745 INFO ipc.Server: IPC Server listener on 9867: starting 2025-06-18 16:50:52,954 INFO datanode.DataNode: Acknowledging ACTIVE Namenode during handshakeBlock pool <registering> (Datanode Uuid unassigned) service to localhost/127.0.0.1:9000 2025-06-18 16:50:52,956 INFO common.Storage: Using 1 threads to upgrade data directories (dfs.datanode.parallel.volumes.load.threads.num=1, dataDirs=1) 2025-06-18 16:50:52,965 INFO common.Storage: Lock on D:\hadoop-3.2.2\data\datanode\in_use.lock acquired by nodename 16808@LAPTOP-FK5QKFGQ 2025-06-18 16:50:52,970 WARN common.Storage: Failed to add storage directory [DISK]file:/D:/hadoop-3.2.2/data/datanode java.io.IOException: Incompatible clusterIDs in D:\hadoop-3.2.2\data\datanode: namenode clusterID = CID-0243def2-304c-4ffd-871c-57b2cdf0182f; datanode clusterID = CID-a6ff55fc-9daf-4605-8a53-edaae5a9f8de at org.apache.hadoop.hdfs.server.datanode.DataStorage.doTransition(DataStorage.java:744) at org.apache.hadoop.hdfs.server.datanode.DataStorage.loadStorageDirectory(DataStorage.java:294) at org.apache.hadoop.hdfs.server.datanode.DataStorage.loadDataStorage(DataStorage.java:407) at org.apache.hadoop.hdfs.server.datanode.DataStorage.addStorageLocations(DataStorage.java:387) at org.apache.hadoop.hdfs.server.datanode.DataStorage.recoverTransitionRead(DataStorage.java:559) at org.apache.hadoop.hdfs.server.datanode.DataNode.initStorage(DataNode.java:1748) at org.apache.hadoop.hdfs.server.datanode.DataNode.initBlockPool(DataNode.java:1684) at org.apache.hadoop.hdfs.server.datanode.BPOfferService.verifyAndSetNamespaceInfo(BPOfferService.java:392) at org.apache.hadoop.hdfs.server.datanode.BPServiceActor.connectToNNAndHandshake(BPServiceActor.java:282) at org.apache.hadoop.hdfs.server.datanode.BPServiceActor.run(BPServiceActor.java:829) at java.lang.Thread.run(Thread.java:748) 2025-06-18 16:50:52,973 ERROR datanode.DataNode: Initialization failed for Block pool <registering> (Datanode Uuid cd899db0-fd95-4996-8250-261d1d36dbda) service to localhost/127.0.0.1:9000. Exiting. java.io.IOException: All specified directories have failed to load. at org.apache.hadoop.hdfs.server.datanode.DataStorage.recoverTransitionRead(DataStorage.java:560) at org.apache.hadoop.hdfs.server.datanode.DataNode.initStorage(DataNode.java:1748) at org.apache.hadoop.hdfs.server.datanode.DataNode.initBlockPool(DataNode.java:1684) at org.apache.hadoop.hdfs.server.datanode.BPOfferService.verifyAndSetNamespaceInfo(BPOfferService.java:392) at org.apache.hadoop.hdfs.server.datanode.BPServiceActor.connectToNNAndHandshake(BPServiceActor.java:282) at org.apache.hadoop.hdfs.server.datanode.BPServiceActor.run(BPServiceActor.java:829) at java.lang.Thread.run(Thread.java:748) 2025-06-18 16:50:52,973 WARN datanode.DataNode: Ending block pool service for: Block pool <registering> (Datanode Uuid cd899db0-fd95-4996-8250-261d1d36dbda) service to localhost/127.0.0.1:9000 2025-06-18 16:50:52,974 INFO datanode.DataNode: Removed Block pool <registering> (Datanode Uuid cd899db0-fd95-4996-8250-261d1d36dbda) 2025-06-18 16:50:54,974 WARN datanode.DataNode: Exiting Datanode 2025-06-18 16:50:54,976 INFO datanode.DataNode: SHUTDOWN_MSG: /************************************************************ SHUTDOWN_MSG: Shutting down DataNode at LAPTOP-FK5QKFGQ/192.168.10.1 ************************************************************/
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