Hadoop安装

Hadoop完全分布式ha安装以及一些懒人设置

1. Hadoop版本2.6.5
   解压，修改配置文件，分发到另外3台，软件安排

Node NN-1 NN-2 DN ZK ZKFC JNN Master BM RES node01 + + + + node02 + + + + + + node03 + + + + node04 + + +

NN：NameNode
DN：DataNode
ZK：zookeeper
ZKFC：FailoverController
JNN：JournalNode
BM：BackupMaster
RES：Regionservers

2. JDK安装，免密钥设置
免密钥设置网上去找，必须达成免密钥。
配置环境变量：vi /etc/profile

export JAVA_HOME=/usr/java/jdk1.7.0_67export HADOOP_PREFIX=/opt/sxt/hadoop-2.6.5export HIVE_HOME=/opt/sxt/apache-hive-1.2.1-binexport HBASE_HOME=/home/hbase-0.98.12.1-hadoop2export PATH=$PATH:$JAVA_HOME/bin:$HADOOP_PREFIX/bin:$HADOOP_PREFIX/sbin:$HIVE_HOME/bin:$HBASE_HOME/bin

配置完成后 ：source /etc/profile

3. node01配置文件
路径：/opt/sxt/hadoop-2.6.5/etc/hadoop
mapred-env.sh
hadoop-env.sh
yarn-env.sh
都修改为：

export JAVA_HOME=/usr/java/jdk1.7.0_67

core-site.xml文件修改：
hadoop.tmp.dir必须为空文件夹。

<configuration>    <property>        <name>fs.defaultFS</name>        <value>hdfs://mycluster</value>    </property>    <property>        <name>hadoop.tmp.dir</name>        <value>/var/sxt/hadoop/ha</value>    </property>    <property>        <name>ha.zookeeper.quorum</name>        <value>node02:2181,node03:2181,node04:2181</value>    </property></configuration>

hdfs-site.xml

这里面包含了一下zookeeper的相关设置。

<configuration>    <property>        <name>dfs.replication</name>        <value>2</value>    </property>    <property>        <name>dfs.nameservices</name>        <value>mycluster</value>   </property>   <property>        <name>dfs.ha.namenodes.mycluster</name>        <value>nn1,nn2</value>   </property>   <property>        <name>dfs.namenode.rpc-address.mycluster.nn1</name>        <value>node01:8020</value>   </property>   <property>        <name>dfs.namenode.rpc-address.mycluster.nn2</name>        <value>node02:8020</value>   </property>   <property>        <name>dfs.namenode.http-address.mycluster.nn1</name>        <value>node01:50070</value>   </property>   <property>        <name>dfs.namenode.http-address.mycluster.nn2</name>        <value>node02:50070</value>   </property>   <property>        <name>dfs.namenode.shared.edits.dir</name>        <value>qjournal://node01:8485;node02:8485;node03:8485/mycluster</value>   </property>   <property>        <name>dfs.client.failover.proxy.provider.mycluster</name>        <value>org.apache.hadoop.hdfs.server.namenode.ha.ConfiguredFailoverProxyProvider</value>   </property>   <property>        <name>dfs.ha.fencing.methods</name>        <value>sshfence</value>   </property>   <property>        <name>dfs.ha.fencing.ssh.private-key-files</name>        <value>/root/.ssh/id_dsa</value>   </property>   <property>        <name>dfs.ha.automatic-failover.enabled</name>        <value>true</value>   </property></configuration>

slaves

node02node03node04