成都网站建设设计

将想法与焦点和您一起共享

Hadoop用户重新部署HDFS-创新互联

前言:
在这篇文章中https://www.jianshu.com/p/eeae2f37a48c
我们使用的是root用户来部署的,在生产环境中,一般某个组件是由某个用户来启动的,本篇文章介绍下怎样用hadoop用户来重新部署伪分布式(HDFS)

莱芜网站建设公司成都创新互联,莱芜网站设计制作,有大型网站制作公司丰富经验。已为莱芜超过千家提供企业网站建设服务。企业网站搭建\外贸网站制作要多少钱,请找那个售后服务好的莱芜做网站的公司定做!
1.前期准备

创建hadoop用户,及配置ssh免密登录
参考:https://www.jianshu.com/p/589bb43e0282

2.停止root启动的HDFS进程并删除/tmp目录下的存储文件
[root@hadoop000 hadoop-2.8.1]# pwd
/opt/software/hadoop-2.8.1
[root@hadoop000 hadoop-2.8.1]# jps
32244 NameNode
32350 DataNode
32558 SecondaryNameNode
1791 Jps
[root@hadoop000 hadoop-2.8.1]# sbin/stop-dfs.sh 
Stopping namenodes on [hadoop000]
hadoop000: stopping namenode
localhost: stopping datanode
Stopping secondary namenodes [0.0.0.0]
0.0.0.0: stopping secondarynamenode
[root@hadoop000 hadoop-2.8.1]# jps
2288 Jps
[root@hadoop000  hadoop-2.8.1]# rm -rf /tmp/hadoop-* /tmp/hsperfdata_*
3.更改文件属主
[root@hadoop000 software]# pwd
/opt/software
[root@hadoop000 software]# chown -R hadoop:hadoop hadoop-2.8.1
4.进入hadoop用户 修改相关配置文件
#第一步:
[hadoop@hadoop000 hadoop]$ pwd
/opt/software/hadoop-2.8.1/etc/hadoop
[hadoop@hadoop000 hadoop]$ vi hdfs-site.xml 
<configuration>
<property>
<name>dfs.replication</name>
<value>1</value>
</property>
<property>
<name>dfs.namenode.secondary.http-address</name>
<value>192.168.6.217:50090</value>
</property>
<property>
<name>dfs.namenode.secondary.https-address</name>
<value>192.168.6.217:50091</value>
</property>
</configuration>
#第二步:
[hadoop@hadoop000 hadoop]$ vi core-site.xml 
<configuration>
<property>
<name>fs.defaultFS</name>
<value>hdfs://192.168.6.217:9000</value>
</property>
</configuration>
#第三步:
[hadoop@hadoop000 hadoop]# vi slaves 
192.168.6.217
5.格式化和启动
[hadoop@hadoop000 hadoop-2.8.1]$ pwd
/opt/software/hadoop-2.8.1
[hadoop@hadoop000 hadoop-2.8.1]$ bin/hdfs namenode -format
[hadoop@hadoop000 hadoop-2.8.1]$ sbin/start-dfs.sh
Starting namenodes on [hadoop000]
hadoop000: starting namenode, logging to /opt/software/hadoop-2.8.1/logs/hadoop-hadoop-namenode-hadoop000.out
192.168.6.217: starting datanode, logging to /opt/software/hadoop-2.8.1/logs/hadoop-hadoop-datanode-hadoop000.out
Starting secondary namenodes [hadoop000]
hadoop000: starting secondarynamenode, logging to /opt/software/hadoop-2.8.1/logs/hadoop-hadoop-secondarynamenode-hadoop000.out
[hadoop@hadoop000 hadoop-2.8.1]$ jps
3141 Jps
2806 DataNode
2665 NameNode
2990 SecondaryNameNode
#至此发现HDFS三个进程都是以hadoop000启动,

另外有需要云服务器可以了解下创新互联scvps.cn,海内外云服务器15元起步,三天无理由+7*72小时售后在线,公司持有idc许可证,提供“云服务器、裸金属服务器、高防服务器、香港服务器、美国服务器、虚拟主机、免备案服务器”等云主机租用服务以及企业上云的综合解决方案,具有“安全稳定、简单易用、服务可用性高、性价比高”等特点与优势,专为企业上云打造定制,能够满足用户丰富、多元化的应用场景需求。


网页标题:Hadoop用户重新部署HDFS-创新互联
当前地址:http://chengdu.cdxwcx.cn/article/dseeso.html