前言

呵呵最近有一系列环境搭建的相关需求

记录一下

hdfs 三个节点 : 192.168.110.150, 192.168.110.151, 192.168.110.152

150 为 master, 151 为 slave01, 152 为 slave02

三台机器都做了 trusted shell ?
?

hdfs 集群搭建

hdfs 三个节点 : 192.168.110.150, 192.168.110.151, 192.168.110.152

1. 基础环境准备

192.168.110.150, 192.168.110.151, 192.168.110.152 上面安装 jdk, 上传 hadoop 的安装包

安装包来自于?Apache Hadoop?

2. hdfs 配置调整

在 master 上面更新如下系列配置文件, 然后将发布包 scp 到 slave01, slave02?

更新 hdfs-site.xml?

<configuration>

<property>
        <name>dfs.namenode.secondary.http-address</name>
        <value>master:50090</value>
</property>

<property>
        <name>dfs.replication</name>
        <value>2</value>
</property>


</configuration>

更新 core-site.xml?

<configuration>

<property>
        <name>fs.defaultFS</name>
        <value>hdfs://master:9000</value>
</property>
<property>
        <name>hadoop.tmp.dir</name>
        <value>/var/hadoop</value>
</property>

</configuration>

更新 hadoop-env.sh?

# The java implementation to use.
export JAVA_HOME=/usr/local/ProgramFiles/jdk1.8.0_291

编辑 slaves 节点

root@master:/usr/local/ProgramFiles/hadoop-2.10.1# cat etc/hadoop/slaves 
slave01
slave02

3.?启动集群?

在 master 所在的节点执行 start-dfs 脚本, 就启动了 hdfs 集群

root@master:/usr/local/ProgramFiles/hadoop-2.10.1# ./sbin/start-dfs.sh 
Starting namenodes on [master]
master: starting namenode, logging to /usr/local/ProgramFiles/hadoop-2.10.1/logs/hadoop-root-namenode-master.out
slave01: starting datanode, logging to /usr/local/ProgramFiles/hadoop-2.10.1/logs/hadoop-root-datanode-slave01.out
slave02: starting datanode, logging to /usr/local/ProgramFiles/hadoop-2.10.1/logs/hadoop-root-datanode-slave02.out
Starting secondary namenodes [master]
master: starting secondarynamenode, logging to /usr/local/ProgramFiles/hadoop-2.10.1/logs/hadoop-root-secondarynamenode-master.out

测试集群

基于 hadoop fs 的测试?

root@master:/usr/local/ProgramFiles/hadoop-2.10.1# hadoop fs -ls /
root@master:/usr/local/ProgramFiles/hadoop-2.10.1# hadoop fs -mkdir /2022-05-21
root@master:/usr/local/ProgramFiles/hadoop-2.10.1# hadoop fs -ls /
Found 1 items
drwxr-xr-x   - root supergroup          0 2022-05-21 01:19 /2022-05-21
root@master:/usr/local/ProgramFiles/hadoop-2.10.1# hadoop fs -put README.txt /2022-05-21/upload.txt
root@master:/usr/local/ProgramFiles/hadoop-2.10.1# hadoop fs -ls /2022-05-21
Found 1 items
-rw-r--r--   2 root supergroup       1366 2022-05-21 01:20 /2022-05-21/upload.txt
root@master:/usr/local/ProgramFiles/hadoop-2.10.1# hadoop fs -cat /2022-05-21/upload.txt
For the latest information about Hadoop, please visit our website at:

   http://hadoop.apache.org/core/

and our wiki, at:

   http://wiki.apache.org/hadoop/

This distribution includes cryptographic software.  The country in 
which you currently reside may have restrictions on the import, 
possession, use, and/or re-export to another country, of 
encryption software.  BEFORE using any encryption software, please 
check your country's laws, regulations and policies concerning the
import, possession, or use, and re-export of encryption software, to 
see if this is permitted.  See <http://www.wassenaar.org/> for more
information.

The U.S. Government Department of Commerce, Bureau of Industry and
Security (BIS), has classified this software as Export Commodity 
Control Number (ECCN) 5D002.C.1, which includes information security
software using or performing cryptographic functions with asymmetric
algorithms.  The form and manner of this Apache Software Foundation
distribution makes it eligible for export under the License Exception
ENC Technology Software Unrestricted (TSU) exception (see the BIS 
Export Administration Regulations, Section 740.13) for both object 
code and source code.

The following provides more details on the included cryptographic
software:
  Hadoop Core uses the SSL libraries from the Jetty project written 
by mortbay.org.
root@master:/usr/local/ProgramFiles/hadoop-2.10.1#

namenode 的 webui?