【运维】hadoop3.0.3集群安装（一）多节点安装

文章目录一.Purpose二. Prerequisites三. Installation1. 节点规划2. Configuring Hadoop in Non-Secure Mode3. 准备工作4. 配置core-site.xmlhdfs-site.xmlyarn-site.xmlmapred-site.xmlworkers4. 分发配置、创建文件夹5. 格式化6. 操作进程6.1. hdfs启动停止6.2. yarn启动停止7. 访问一.PurposeThis document describes how to install and configure Hadoop clusters ranging from a few nodes to extremely large clusters with thousands of nodes.This document does not cover advanced topics such as Security or High Availability.此文章目的在于多节点hadoop从几个节点到上千个节点的安装但这里不包括高可用和安全相关的内容。二. Prerequisitesjava 8稳定版的hadoop镜像本文下载的是hadoop3.0.3版本三. InstallationTypically one machine in the cluster is designated as the NameNode and another machine as the ResourceManager, exclusively. These are the masters.Other services (such as Web App Proxy Server and MapReduce Job History server) are usually run either on dedicated hardware or on shared infrastructure, depending upon the load.The rest of the machines in the cluster act as both DataNode and NodeManager. These are the slaves.管理节点通常集群中的一台机器被指定为NameNode另一台机器被指定为ResourceManager。工作节点集群中的其余机器同时充当DataNode和NodeManager。其他服务(如Web App Proxy Server和MapReduce Job History Server)通常在专用硬件或共享基础设施上运行具体取决于负载这里我放在了除管理节点之外的节点1. 节点规划根据上面的建议我这里选择了两个安装节点进行组件规划节点hdfs组件yarn组件10.xxxnode1namenode、datanoderesourcemanager、nodemanager10.xxxnode2secondaryNameNode、datanodenodemanager、jobHistorynode2. Configuring Hadoop in Non-Secure ModeHDFS daemons are NameNode, SecondaryNameNode, and DataNode. YARN daemons are ResourceManager, NodeManager, and WebAppProxy. If MapReduce is to be used, then the MapReduce Job History Server will also be running. For large installations, these are generally running on separate hosts.Hdfs 包括namenode、secondaryNamenode、datanodeyarn包括resourcemanager、nodemanger、和WebAppProxy(暂时没有规划此进程)如果运行mr则MapReduce Job History Server也需要注意对于大型安装上述组件都是分散在不同机器中的。3. 准备工作每个节点【node1、node2】操作mkdir-p/home/user/hadoopcd/home/user/hadooptar-zxvfhadoop.tar.gzln-shadoop-3.0.3 hadoop设置环境变量vim~/.bashrc# 添加如下内容exportHADOOP_HOME/home/user/hadoop/hadoopexportPATH$HADOOP_HOME/bin:$HADOOP_HOME/sbin:$PATHexportHADOOP_CONF_DIR/home/user/hadoop/hadoop/etc/hadoop# 执行source~/.bashrc4. 配置在/{user_home}/hadoop/hadoop/etc/hadoop/ 下core-site.xmlconfigurationpropertynamefs.defaultFS/namevaluehdfs://namenodeIp:9000/valuedescriptionip 为namenode所在ip/description/property/configurationhdfs-site.xml!-- namenode --propertynamedfs.namenode.name.dir/namevalue/opt/data/hdfs/namenode,/opt/data02/hdfs/namenode/valuedescriptionIf this is a comma-delimited list of directories then the name table is replicated in all of the directories, for redundancy. Path on the local filesystem where the NameNode stores the namespace and transactions logs persistently. 用于保存Namenode的namespace和事务日志的路径/description/property!-- namenode --!-- datanode --propertynamedfs.datanode.data.dir/namevalue/opt/data/hdfs/data,/opt/data02/hdfs/data/valuedescriptionIf this is a comma-delimited list of directories, then data will be stored in all named directories, typically on different devices./description/propertyyarn-site.xml!-- Configurations for ResourceManager: --propertynameyarn.resourcemanager.address/namevaluenode1:8832/value/propertypropertynameyarn.resourcemanager.scheduler.address/namevaluenode1:8830/value/propertypropertynameyarn.resourcemanager.resource-tracker.address/namevaluenode1:8831/value/propertypropertynameyarn.resourcemanager.admin.address/namevaluenode1:8833/value/propertypropertynameyarn.resourcemanager.webapp.address/namevaluenode1:8888/value/propertypropertynameyarn.resourcemanager.hostname/namevaluermhostname/value/propertypropertynameyarn.nodemanager.local-dirs/namevalue/data/yarn/nm-local-dir,/data02/yarn/nm-local-dir/value/propertypropertynameyarn.nodemanager.log-dirs/namevalue/home/taiyi/hadoop/yarn/userlogs/value/propertypropertynameyarn.nodemanager.remote-app-log-dir/namevalue/home/taiyi/hadoop/yarn/containerlogs/value/propertypropertynameyarn.nodemanager.resource.memory-mb/namevalue61440/valuedescription通过free -h 查看机器具体内存设定/description/propertymapred-site.xml!--Configurations for MapReduce JobHistory Server:--propertynamemapreduce.jobhistory.address/namevaluenode2:10020/value/propertypropertynamemapreduce.jobhistory.webapp.address/namevaluenode2:19888/value/property!--Configurations for MapReduce JobHistory Server:--workers配置工作节点node1 node24. 分发配置、创建文件夹配置分发到另外一个节点scp-r\/home/user/hadoop/hadoop/etc/hadoop/\rootnode2hostname:/home/user/hadoop/hadoop/etc/所有节点创建文件夹mkdir-p/data/yarn/nm-local-dir /data02/yarn/nm-local-dirchown-Ruser:user /data/yarn /data02/yarnmkdir-p/opt/data/hdfs/namenode /opt/data02/hdfs/namenode /opt/data/hdfs/data /opt/data02/hdfs/datachown-Ruser:user /opt/data /opt/data025. 格式化namenode所在节点执行hdfs namenode-format如果看到这些信息格式化成功2022-08-1217:43:11,039INFO common.Storage:Storage directory/Users/lianggao/MyWorkSpace/002install/hadoop-3.3.1/hadoop_repo/dfs/name has been successfully formatted.2022-08-1217:43:11,069INFO namenode.FSImageFormatProtobuf:Saving image file/Users/lianggao/MyWorkSpace/002install/hadoop-3.3.1/hadoop_repo/dfs/name/current/fsimage.ckpt_0000000000000000000usingno compression2022-08-1217:43:11,200INFO namenode.FSImageFormatProtobuf:Image file/Users/lianggao/MyWorkSpace/002install/hadoop-3.3.1/hadoop_repo/dfs/name/current/fsimage.ckpt_0000000000000000000 of size403bytes saved in0seconds.如果格式化失败需要先删除nn的管理目录因为格式化的时候是创建了nn文件的管理目录 common.Storage: Storage directory /data/hadoopdata/name has been successfully formatted.6. 操作进程6.1. hdfs启动node1hdfs--daemonstart namenode hdfs--daemonstart datanodenode2hdfs--daemonstart secondarynamenode hdfs--daemonstart datanode停止hdfs--daemonstop namenode hdfs--daemonstop secondarynamenode hdfs--daemonstop datanode6.2. yarn启动node1yarn--daemonstart resourcemanageryarn--daemonstart nodemanagernode2mapred--daemonstart historyserveryarn--daemonstart nodemanager停止yarn--daemonstop resourcemanageryarn--daemonstop nodemanager mapred--daemonstop historyserver7. 访问http://node1:9870/ http://node2:8088/