一、软件版本
Oracle JDK7、Hadoop 2.7.3、HBase 1.2.3、Centos 7
二、注意点
1. 操作系统的hostname必须配置,不要直接用IP,否则zookeeper会报错
2. 关闭操作系统防火墙,或者配置port白名单
3. 必须同步时钟,否则HBase的Master进程会报错(https://my.oschina.net/nk2011/blog/784015)
三、集群共4台机器,hostname和ip对应如下
192.168.1.1 node1
192.168.1.2 node2
192.168.1.3 node3
192.168.1.4 node4
四、机器分配如下
Hadoop:
node1 namenode
node2 secondarynamenode
node3 datanode
node4 datanode
HBase:
node1 master zookeeper
node2 backup zookeeper regionServer
node3 zookeeper regionServer
五、开始搭建 Hadoop 的 HDFS
1. 关门防火墙
systemctl stop firewalld
2. 编辑 /etc/hostname,修改hostname
3. 编辑 /etc/hosts,添加IP与hostname的映射
4. 创建 hadoop 用户,并修改密码
useradd hadoop
passwd hadoop
5. 安装JDK7,解压 Hadoop 2.7.3 到 /opt 目录
6. 修改 Hadoop 和 HBase 目录的拥有者
chown -R hadoop:hadoop /opt/hadoop-2.7.3
chown -R hadoop:hadoop /opt/hbase-1.2.3
7. 创建HDFS的数据目录
mkdir /opt/hadoop-2.7.3/hdfs
# name node 数据目录
mkdir /opt/hadoop-2.7.3/hdfs/name
# data node 数据目录
mkdir /opt/hadoop-2.7.3/hdfs/data
# 修改拥有者
chmod -R hadoop:hadoop /opt/hadoop-2.7.3/hdfs
8. 设置SSH免密码登录(https://my.oschina.net/nk2011/blog/778623)
# 切换到 hadoop 用户
su hadoop
# 创建SSH的RSA密钥对
ssh-keygen -t rsa -P '' -f ~/.ssh/id_rsa
# 复制公钥到所有服务器
ssh-copy-id hadoop@node1
ssh-copy-id hadoop@node2
ssh-copy-id hadoop@node3
ssh-copy-id hadoop@node4
9. 配置 Hadoop 集群
1)打开 ${HADOOP_HOME}/etc/hadoop/hadoop-env.sh,设置 JAVA_HOME
2)打开 ${HADOOP_HOME}/etc/hadoop/core-site.xml,添加以下配置
<configuration>
<property>
<name>fs.defaultFS</name>
<value>hdfs://node1:8020</value>
</property>
<property>
<name>io.file.buffer.size</name>
<value>131072</value>
</property>
</configuration>
3)打开 ${HADOOP_HOME}/etc/hadoop/hdfs-site.xml,添加以下配置
<configuration>
<property>
<name>dfs.replication</name>
<value>3</value>
</property>
<property>
<name>dfs.namenode.name.dir</name>
<value>file:/opt/hadoop-2.7.3/hdfs/name</value>
</property>
<property>
<name>dfs.datanode.data.dir</name>
<value>file:/opt/hadoop-2.7.3/hdfs/data</value>
</property>
<property>
<name>dfs.blocksize</name>
<value>268435456</value>
</property>
<property>
<name>dfs.namenode.handle.count</name>
<value>100</value>
</property>
#secondary name node配置
<property>
<name>dfs.namenode.secondary.http-address</name>
<value>node2:50090</value>
</property>
<property>
<name>dfs.namenode.http-address</name>
<value>node1:50070</value>
</property>
</configuration>
4)清空 ${HADOOP_HOME}/etc/hadoop/slaves,并加入以下内容
node2
node3
node4
5) 格式化HDFS的 name node
${HADOOP_HOME}/bin/hdfs namenode -format hadoop_cluster
10. 在node1,node2,node3,node4 上重复 1-9 步骤
11. Hadoop 的 HDFS 配置完毕,在 node1 上启动 Hadoop
[hadoop@node1]$ hadoop-2.7.3/sbin/start-dfs.sh
Starting namenodes on [node1]
node1: starting namenode, logging to /opt/hadoop-2.7.3/logs/hadoop-hadoop-namenode-node1.out
node3: starting datanode, logging to /opt/hadoop-2.7.3/logs/hadoop-hadoop-datanode-node3.out
node2: starting datanode, logging to /opt/hadoop-2.7.3/logs/hadoop-hadoop-datanode-node2.out
node4: starting datanode, logging to /opt/hadoop-2.7.3/logs/hadoop-hadoop-datanode-node4.out
Starting secondary namenodes [node2]
node2: starting secondarynamenode, logging to /opt/hadoop-2.7.3/logs/hadoop-hadoop-secondarynamenode-node2.out
六、搭建 HBase
1. 解压 HBase 1.2.3 到 /opt 目录
2. 打开 ${HBASE_HOME}/conf/hbase-env.sh,设置 JAVA_HOME
3. 打开 ${HBASE_HOME}/conf/hbase-env.sh,设置 HBASE_PID_DIR
4. 打开 ${HBASE_HOME}/conf/hbase-site.xml,添加以下内容
<configuration>
<property>
<name>hbase.cluster.distributed</name>
<value>true</value>
</property>
<property>
<name>hbase.rootdir</name>
<value>hdfs://node1:8020/hbase</value>
</property>
<property>
<name>hbase.zookeeper.quorum</name>
<value>node1,node2,node3</value>
</property>
<property>
<name>hbase.zookeeper.property.dataDir</name>
<value>/opt/hbase-1.2.3/zookeeper</value>
</property>
</configuration>
5. 清空 ${HBASE_HOME}/conf/regionservers 文件,添加以下内容
node2
node3
6. 创建 ${HBASE_HOME}/conf/backup-masters 文件,添加以下内容
node2
7. 在 node1,node2,node3 重复 1-6 步骤
8. HBase配置完毕,在 node1 上启动 HBase(确保Hadoop已经启动)
[hadoop@node3]$ /opt/hbase-1.2.3/bin/start-hbase.sh
node1: starting zookeeper, logging to /opt/hbase-1.2.3/bin/../logs/hbase-hadoop-zookeeper-node1.out
node2: starting zookeeper, logging to /opt/hbase-1.2.3/bin/../logs/hbase-hadoop-zookeeper-node2.out
node3: starting zookeeper, logging to /opt/hbase-1.2.3/bin/../logs/hbase-hadoop-zookeeper-node3.out
starting master, logging to /opt/hbase-1.2.3/bin/../logs/hbase-hadoop-master-node1.out
node2: starting regionserver, logging to /opt/hbase-1.2.3/bin/../logs/hbase-hadoop-regionserver-node2.out
node3: starting regionserver, logging to /opt/hbase-1.2.3/bin/../logs/hbase-hadoop-regionserver-node3.out
node2: starting master, logging to /opt/hbase-1.2.3/bin/../logs/hbase-hadoop-master-node2.out
来源:oschina
链接:https://my.oschina.net/u/68887/blog/783809