搭建FULL

1：服务器规划

NN：192.168.0.201 DN：192.168.0.202 192.168.0.203 192.168.0.204 SNN：192.168.0.202

2：部署配置

NN：core-site.xml: fs.defaultFS hdfs://node01:9000 DN: slaves: node02 node03 node04 SNN: hdfs-siet.xml: dfs.namenode.secondary.http.address node01:50090

3：角色规划

node02~node04:

分配，安装jdk
rpm -i jdk...

免密登录
node01:
scp /root/.ssh/id_dsa.pub node02:/root/.ssh/node01.pub
scp /root/.ssh/id_dsa.pub node03:/root/.ssh/node01.pub
scp /root/.ssh/id_dsa.pub node04:/root/.ssh/node01.pub
node02:
cd ~/.ssh
cat node01.pub >> authorized_keys
node03:
cd ~/.ssh
cat node01.pub >> authorized_keys
node04:
cd ~/.ssh
cat node01.pub >> authorized_keys

4：配置部署

node01:
cd $HADOOP/etc/hadoop
vi core-site.xml 不需要改
vi hdfs-site.xml

<property>
    <name>dfs.replication</name>
    <value>2</value>
       </property>
       <property>
    <name>dfs.namenode.name.dir</name>
    <value>/var/bigdata/hadoop/full/dfs/name</value>
       </property>
       <property>
    <name>dfs.datanode.data.dir</name>
    <value>/var/bigdata/hadoop/full/dfs/data</value>
       </property>
       <property>
    <name>dfs.namenode.secondary.http-address</name>
    <value>node02:50090</value>
       </property>
       <property>
    <name>dfs.namenode.checkpoint.dir</name>
    <value>/var/bigdata/hadoop/full/dfs/secondary</value>
</property>

vi slaves

node02
node03
node04

分发：
cd /opt
scp -r ./bigdata/ node02:pwd<br />`scp -r ./bigdata/ node03:`pwd
scp -r ./bigdata/ node04:pwd``

格式化启动
hdfs namenode -format
start-dfs.sh

关闭：
stop-dfs.sh

5：访问

http://node01:50070/dfshealth.html#tab-datanode