Hadoop 集群环境搭建

MiddleWare › Hadoop
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1. 集群规划

debian120 debian121 debian122
HDFS DataNode、NameNode DataNode、SecondaryNameNode DataNode
Yarn NodeManager NodeManager NodeManager、ResourceManager

2. 前期准备

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# Selinux
# 防火墙
# 域名解析
# Java环境
# 时间同步
# SSH免密

3. Zookeeper 集群

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$ tar -zxvf zookeeper-3.4.14.tar.gz -C /opt/app/
$ cd /opt/app/zookeeper-3.4.14
$ cp conf/zoo_sample.cfg conf/zoo.cfg
$ mkdir data logs
$ vim conf/zoo.cfg
dataDir=/opt/app/zookeeper-3.4.14/data
dataLogDir=/opt/app/zookeeper-3.4.14/logs
server.1=debian120:2888:3888
server.2=debian121:2888:3888
server.3=debian122:2888:3888
$ echo "1" > data/myid  # 2/3
$ bin/zkServer.sh start  # all
$ bin/zkServer.sh status  # all
$ sudo vim /etc/profile.d/my.sh
export ZOOKEEPER_HOME=/opt/app/zookeeper-3.4.14
export PATH=$PATH:$ZOOKEEPER_HOME/bin

4. Hadoop & Yarn 集群

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$ tar -zxvf hadoop-2.7.3.tar.gz -C /opt/app/
$ cd /opt/app/hadoop-2.7.3
$ mkdir -p hdfs/{datanode,namenode} tmpdata
$ cd /opt/app/hadoop-2.7.3/etc/hadoop

$ cp hadoop-env.sh hadoop-env.sh.bak
$ vim hadoop-env.sh
export JAVA_HOME=/opt/app/jdk1.8.0_212

$ cp yarn-env.sh yarn-env.sh.bak
$ vim yarn-env.sh
export JAVA_HOME=/opt/app/jdk1.8.0_212

$ cp hdfs-site.xml hdfs-site.xml.bak
$ vim hdfs-site.xml
<configuration>
    <property>
        <name>dfs.namenode.name.dir</name>
        <value>/opt/app/hadoop-2.7.3/hdfs/namenode</value>
    </property>
    <property>
        <name>dfs.datanode.data.dir</name>
        <value>/opt/app/hadoop-2.7.3/hdfs/datanode</value>
    </property>
    <property>
        <name>dfs.namenode.http-address</name>
        <value>debian120:50070</value>
    </property>
    <property>
        <name>dfs.namenode.secondary.http-address</name>
        <value>debian121:50090</value>
    </property>
    <property>
        <name>dfs.replication</name>
        <value>2</value>
    </property>
    <property>
          <name>dfs.permissions.enabled</name>
          <value>false</value>
    </property>
    <property>
        <name>dfs.webhdfs.enabled</name>
        <value>true</value>
    </property>
</configuration>

$ cp yarn-site.xml yarn-site.xml.bak
$ vim yarn-site.xml
<configuration>
    <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.resourcemanager.address</name>
        <value>debian122:8025</value>
    </property>
    <property>
        <name>yarn.resourcemanager.admin.address</name>
        <value>debian122:8030</value>
    </property>
    <property>
        <name>yarn.resourcemanager.scheduler.address</name>
        <value>debian122:8050</value>
    </property>
    <property>
        <name>yarn.resourcemanager.resource-tracker.address</name>
        <value>debian122:8033</value>
    </property>
    <property>
        <name>yarn.resourcemanager.webapp.address</name>
        <value>debian122:8088</value>
  </property>
</configuration>

$ cp core-site.xml core-site.xml.bak
$ vim core-site.xml
<configuration>
    <property>
        <name>fs.defaultFS</name>
        <value>hdfs://debian120:9000</value>
    </property>
    <property>
        <name>hadoop.tmp.dir</name>
        <value>/opt/app/hadoop-2.7.3/tmpdata</value>
    </property>
    <property>
        <name>io.file.buffer.size</name>
        <value>10240</value>
    </property>
    <property>
        <name>ha.zookeeper.quorum</name>
        <value>debian120:2181,debian121:2181,debian122:2181</value>
    </property>
    <property>
        <name>ha.zookeeper.session-timeout.ms</name>
        <value>1000</value>
    </property>
    <property>
        <name>hadoop.proxyuser.hadoop.hosts</name>
        <value>*</value>
    </property>
    <property>
        <name>hadoop.proxyuser.hadoop.groups</name>
        <value>*</value>
    </property>
</configuration>

$ cp mapred-site.xml.template mapred-site.xml
$ vim mapred-site.xml
<configuration>
    <property>
        <name>mapreduce.framework.name</name>
        <value>yarn</value>
    </property>
</configuration>

$ cp slaves slaves.bak
$ vim slaves
debian120
debian121
debian122

$ sudo vim /etc/profile.d/my.sh
export HADOOP_HOME=/opt/app/hadoop-2.7.3
export PATH=$PATH:$HADOOP_HOME/bin:$HADOOP_HOME/sbin

# 初始化集群
debian120$ hadoop namenode -format
# 启动HDFS集群
debian120$ start-dfs.sh
Starting namenodes on [debian120]
debian120: starting namenode, logging to /opt/app/hadoop-2.7.3/logs/hadoop-liubin-namenode-debian120.out
debian120: starting datanode, logging to /opt/app/hadoop-2.7.3/logs/hadoop-liubin-datanode-debian120.out
debian121: starting datanode, logging to /opt/app/hadoop-2.7.3/logs/hadoop-liubin-datanode-debian121.out
debian122: starting datanode, logging to /opt/app/hadoop-2.7.3/logs/hadoop-liubin-datanode-debian122.out
Starting secondary namenodes [debian121]
debian121: starting secondarynamenode, logging to /opt/app/hadoop-2.7.3/logs/hadoop-liubin-secondarynamenode-debian121.out
# 启动Yarn集群
debian122$ start-yarn.sh
starting yarn daemons
resourcemanager running as process 1562. Stop it first.
debian121: starting nodemanager, logging to /opt/app/hadoop-2.7.3/logs/yarn-liubin-nodemanager-debian121.out
debian120: starting nodemanager, logging to /opt/app/hadoop-2.7.3/logs/yarn-liubin-nodemanager-debian120.out
debian122: starting nodemanager, logging to /opt/app/hadoop-2.7.3/logs/yarn-liubin-nodemanager-debian122.out

debian120$ jps
3840 Jps
2026 QuorumPeerMain
3483 DataNode
3741 NodeManager
3373 NameNode
debian121$ jps
1523 DataNode
1720 NodeManager
1611 SecondaryNameNode
1196 QuorumPeerMain
1821 Jps
debian122$ jps
2017 NodeManager
2116 Jps
1399 DataNode
1176 QuorumPeerMain
1562 ResourceManager

# 格式化namenode
$ hadoop namenode -format

参考