hadoop3.X完全分布式集群搭建

五台机器已经配好ip地址和免秘钥登录，文中不在赘述，有疑问的同学可自行百度，另外本集群采用非root用户搭建，很多命令都带有sudo，若使用root用户搭建，可忽视，如果你也使用非root用户，请特别注意，免秘钥也是非root用户

集群规划

hadoop1hadoop2hadoop3hadoop4hadoop5
zookeeper zookeeper zookeeper zookeeper zookeeper
Namenode Namenode      
ZKFailoverController ZKFailoverController      
JournalNode JournalNode JournalNode JournalNode JournalNode
    DateNode DateNode DateNode
    NodeManager NodeManager NodeManager
ResourceManager ResourceManager      

准备工作

  • 主机名ip地址映射
sudo vim /etc/hosts
151.25.88.141    hadoop1
151.25.88.142    hadoop2
151.25.88.143    hadoop3
151.25.88.144    hadoop4
151.25.88.145    hadoop5
  • 关闭防火墙
sudo systemctl stop firewalld
sudo systemctl disable firewalld
  • 禁用selinux
sudo vim /etc/selinux/config
SELINUX=enforcing --> SELINUX=disabled
  • 配置时间同步(五台节点)
sudo yum -y install ntp ntpdate 
ntpd  ntp.aliyun.com

集群基础配置

我的所有组件都安装在/opt/soft/ 下，可根据个人习惯调整
  • 解压
sudo mkdir -p /opt/soft
sudo tar -zvxf /home/hadoop/download/jdk-8u251-linux-x64.tar.gz -C /opt/soft
sudo tar -zvxf /home/hadoop/download/apache-zookeeper-3.6.1-bin.tar.gz -C /opt/soft
sudo tar -zvxf /home/hadoop/download/hadoop-3.2.1.tar.gz -C /opt/soft
sudo chown hadoop:hadoop /opt/soft -R
  • 配置环境变量
vim ~/.bashrc

export JAVA\_HOME=/opt/soft/jdk1.8.0\_251 
export CLASSPATH=.:$JAVA\_HOME/lib/dt.jar:$JAVA\_HOME/lib/tools.jar 
export PATH=$JAVA\_HOME/bin:$PATH 
export ZOOKEEPER\_HOME=/opt/soft/apache-zookeeper-3.6.1-bin 
export PATH=$ZOOKEEPER\_HOME/bin:$PATH 
export HADOOP\_HOME=/opt/soft/hadoop-3.2.1 
export PATH=$HADOOP\_HOME/bin:$HADOOP\_HOME/sbin:$PATH
hadoop-2.7.7
保存退出后记得source
source ~/.bashrc

zookeeper配置

cd /opt/soft/apache-zookeeper-3.6.1-bin/conf
cp zoo\_sample.cfg zoo.cfg
vim zoo.cfg
更改数据目录和配置日志目录
dataDir=/home/zookeeper/data 
dataLogDir=/home/zookeeper/datalog
配置服务器
server.1=hadoop1:2888:3888 
server.2=hadoop2:2888:3888 
server.3=hadoop3:2888:3888 
server.4=hadoop4:2888:3888 
server.5=hadoop5:2888:3888

保存退出后，创建数据目录和日志目录，和zoo.cfg对应

sudo mkdir -p /home/zookeeper/data
sudo mkdir -p /home/zookeeper/datalog
sudo chown hadoop:hadoop /home/zookeeper -R

配置zk ID(其他四个节点依次为2,3,4,5)

echo 1 > /home/zookeeper/data/myid
hadoop配置

进到hadoop目录，主要更改6个配置文件

cd /opt/soft/hadoop-3.2.1/etc/hadoop
  • hadoop-env.sh
vim hadoop-env.sh
#指定JAVA_HOME
export JAVA_HOME=/opt/soft/jdk1.8.0\_251 
#指定hadoop用户，hadoop3.x之后必须配置(我的用户名就叫hadoop)
export HDFS_NAMENODE_USER=hadoop
export HDFS_DATANODE_USER=hadoop 
export HDFS_ZKFC_USER=hadoop 
export HDFS_JOURNALNODE_USER=hadoop
export YARN_RESOURCEMANAGER_USER=hadoop 
export YARN_NODEMANAGER_USER=hadoop
  • core-site.xml
<!--集群名称-->
<property> 
    <name>fs.defaultFS</name> 
    <value>hdfs://mycluster</value> </property> 
<!--临时目录-->
<property> 
    <name>hadoop.tmp.dir</name> 
    <value>/home/hadoop_data</value> 
</property>
<!--webUI展示时的用户-->
<property> 
    <name>hadoop.http.staticuser.user</name>            
    <value>hadoop</value> 
</property>
<!--高可用依赖的zookeeper的通讯地址-->
<property>
    <name>ha.zookeeper.quorum</name>
    <value>hadoop1:2181,hadoop2:2181,hadoop3:2181,hadoop4:2181,hadoop5:2181</value>
</property>

  • hdfs-site.xml

    <property>
    <name>dfs.nameservices</name>
    <value>mycluster</value>
</property>
<!--定义hdfs集群中的namenode的ID号-->
<property>
    <name>dfs.ha.namenodes.mycluster</name>
    <value>nn1,nn2</value>
</property>
<!--定义namenode的主机名和rpc协议的端口-->
<property>
    <name>dfs.namenode.rpc-address.mycluster.nn1</name>
    <value>hadoop1:8020</value>
</property>
<property>
    <name>dfs.namenode.rpc-address.mycluster.nn2</name>
    <value>hadoop2:8020</value>
</property>
<!--定义namenode的主机名和http协议的端口-->
<property>
    <name>dfs.namenode.http-address.mycluster.nn1</name>
    <value>hadoop1:9870</value>
</property>
<property>
    <name>dfs.namenode.http-address.mycluster.nn2</name>
    <value>hadoop2:9870</value>
</property>
<!--定义共享edits的url-->
<property>
    <name>dfs.namenode.shared.edits.dir</name>
    <value>qjournal://hadoop1:8485;hadoop2:8485;hadoop3:8485;hadoop4:8485;hadoop5:8485/ljgk</value>
</property>
<!--定义hdfs的客户端连接hdfs集群时返回active namenode地址-->
<property>
    <name>dfs.client.failover.proxy.provider.mycluster</name>
    <value>org.apache.hadoop.hdfs.server.namenode.ha.ConfiguredFailoverProxyProvider</value>
</property>

<!--hdfs集群中两个namenode切换状态时的隔离方法-->
<property>
    <name>dfs.ha.fencing.methods</name>
    <value>sshfence</value>
</property>

<!--hdfs集群中两个namenode切换状态时的隔离方法的秘钥-->
<property>
    <name>dfs.ha.fencing.ssh.private-key-files</name>
    <value>/root/.ssh/id_rsa</value>
</property>

<!--journalnode集群中用于保存edits文件的目录-->
<property>
    <name>dfs.journalnode.edits.dir</name>
    <value>/opt/journalnode/data</value>
</property>
<!--ha的hdfs集群自动切换namenode的开关-->
<property>
    <name>dfs.ha.automatic-failover.enabled</name>
    <value>true</value>
</property>

<property>
    <name>dfs.safemode.threshold.pct</name>
    <value>1</value>
</property>
  • workers
hadoop3
hadoop4
hadoop5
  • yarn-site.xml
<property>
    <name>yarn.resourcemanager.ha.enabled</name>
    <value>true</value>
    <description>Enable RM high-availability</description>
</property>
<property>
    <name>yarn.resourcemanager.cluster-id</name>
    <value>cluster1</value>
    <description>Name of the cluster</description>
</property>
<property>
    <name>yarn.resourcemanager.ha.rm-ids</name>
    <value>rm1,rm2</value>
    <description>The list of RM nodes in the cluster when HA is enabled</description>
</property>
 <property>
    <name>yarn.resourcemanager.hostname.rm1</name>
    <value>hadoop1</value>
    <description>The hostname of the rm1</description>
</property>
<property>
    <name>yarn.resourcemanager.hostname.rm2</name>
    <value>hadoop2</value>
    <description>The hostname of the rm2</description>
</property>
<property>
    <name>yarn.resourcemanager.webapp.address.rm1</name>
    <value>hadoop1:8088</value>
</property>
<property>
    <name>yarn.resourcemanager.webapp.address.rm2</name>
    <value>hadoop2:8088</value>
</property>
<property>
    <name>yarn.resourcemanager.zk-address</name>
    <value>hadoop1:2181,hadoop2:2181,hadoop3:2181,hadoop4:2181,hadoop5:2181</value>
</property>
<property>
    <name>yarn.nodemanager.aux-services</name>
    <value>mapreduce_shuffle</value>
</property>
<property>
    <name>yarn.nodemanager.aux-services.mapreduce_shuffle.class</name>
    <value>org.apache.hadoop.mapred.ShuffleHandler</value>
</property>
<property>
    <name>yarn.nodemanager.env-whitelist</name>
     <value>JAVA_HOME,HADOOP_COMMON_HOME,HADOOP_HDFS_HOME,HADOOP_CONF_DIR,CLASSPATH_PREPEND_DISTCACHE,HADOOP_YARN_HOME,HADOOP_MAPRED_HOME</value>
</property>
  • mapred-site.xml
<property>
    <name>mapreduce.framework.name</name>
    <value>yarn</value>
</property>
<property>
    <name>mapreduce.application.classpath</name>
    <value>$HADOOP_MAPRED_HOME/share/hadoop/mapreduce/*:$HADOOP_MAPRED_HOME/share/hadoop/mapreduce/lib/*</value>
</property>
准备启动
  • 启动zookeeper（五台节点）
zkServer.sh start

  • 启动hadoop

    • 启动jn(五个节点)
    hadoop-daemon.sh start journalnode
    • 格式化一个namenode，并启动
    hdfs nomenode -format
hadoop-daemon.sh start namenode
    • 另一个namenode手动同步数据,并启动
    hdfs namenode -bootstrapStandby
hadoop-daemon.sh start namenode
    • 初始化zkfc(任一节点)
    hdfs zkfc -formatZK
    • 停止hadoop所有进程
     
    stop-dfs.sh
    • 全部启动
    start-all.sh

 

原文链接：https://segmentfault.com/a/1190000023834334?utm_source=sf-similar-article

posted @ 2021-04-30 00:04  民宿  阅读(481)  评论(0)  编辑  收藏  举报