基于** Docker 构建 Hadoop **平台

**0. **绪论

使⽤Docker搭建Hadoop技术平台，包括安装Docker、Java、Scala、Hadoop、 Hbase、Spark。

集群共有5台机器，主机名分别为 h01、h02、h03、h04、h05。其中 h01 为 master，其他的为

slave。

虚拟机配置：建议1盒2线程、8G内存、30G硬盘。最早配置4G内存，HBase和Spark运⾏异常。

JDK 1.8

Scala 2.11.12

Hadoop 3.3.3

Hbase 3.0.0

Spark 3.3.0

**1. Docker **

**1.1 Ubuntu 22.04 安装Docker **

在 Ubuntu 下对 Docker 的操作都需要加上 sudo ，如果已经是 root 账号了，则不需要。

如果不加 sudo ，Docker 相关命令会⽆法执⾏。

在 Ubuntu 下安装 Docker 的时候需在管理员的账号下操作。

安装完成之后，以 sudo 启动 Docker 服务。

显⽰ Docker 中所有正在运⾏的容器，由于 Docker 才安装，我们没有运⾏任何容器，所以显⽰结果如

下所⽰。

**1.2 使⽤Docker **

现在的 Docker ⽹络能够提供 DNS 解析功能，我们可以使⽤如下命令为接下来的 Hadoop 集群单独构

建⼀个虚拟的⽹络。可以采⽤直通、桥接或macvlan⽅式，这⾥采⽤桥接模式，可以做到5台主机互联，

并能访问宿主机和⽹关，可以连接外⽹，便于在线下载程序资源。

以上命令创建了⼀个名为 hadoop 的虚拟桥接⽹络，该虚拟⽹络内部提供了⾃动的DNS解析服务。使⽤

下⾯这个命令查看 Docker 中的⽹络，可以看到刚刚创建的名为 hadoop 的虚拟桥接⽹络。

mike@ubuntu2204:~$ wget -qO- https://get.docker.com/ | sh

mike@ubuntu2204:~$ sudo service docker start

mike@ubuntu2204:~$ sudo docker ps

CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES

mike@ubuntu2204:~$

mike@ubuntu2204:~~$sudo docker network create --driver=bridge hadoopmike@ubuntu2204:~~$ sudo docker network ls

[sudo] password for mike:

NETWORK ID NAME DRIVER SCOPE

3948edc3e8f3 bridge bridge local

337965dd9b1e hadoop bridge local

cb8f2c453adc host host local

fff4bd1c15ee mynet macvlan local

30e1132ad754 none null local

mike@ubuntu2204:~$

查找 ubuntu 容器

打开https://hub.docker.com/官⽹，搜索ubuntu，找到官⽅认证镜像，这⾥选取第⼀个

点击第⼀个ubuntu，查找可选⽤的版本，这⾥选取22.04下载 ubuntu 22.04 版本的镜像⽂件

mike@ubuntu2204:~$ sudo docker pull ubuntu:22.04

查看已经下载的镜像

mike@ubuntu2204:~$ sudo docker images

[sudo] password for mike:

REPOSITORY TAG IMAGE ID CREATED SIZE

newuhadoop latest fe08b5527281 3 days ago 2.11GB

ubuntu 22.04 27941809078c 6 weeks ago 77.8MB

mike@ubuntu2204:~$

根据镜像启动⼀个容器，可以看出 shell 已经是容器的 shell 了，这⾥注意@后⾯的容器ID与上图镜像ID

⼀致

mike@ubuntu2204:~$ sudo docker run -it ubuntu:22.04 /bin/bash

root@27941809078c:/#

输⼊ exit 可以退出容器，不过建议使⽤ Ctrl + P + Q ，退出容器状态，但仍让容器处于后台运⾏状

态。

mike@ubuntu2204:~$

查看本机上所有的容器此处会看到刚刚创建好的容器，并在后台运⾏。这⾥因为是后期制作的教程，为了节省内存，只保留了5

台hadoop的容器，最原始的容器已经删除。

启动⼀个状态为退出的容器，最后⼀个参数为容器 ID

进⼊⼀个容器

关闭⼀个容器

**2. **安装集群

主要是安装 JDK 1.8 的环境，因为 Spark 要 Scala，Scala 要 JDK 1.8，以及 Hadoop，以此来构建基础

镜像。

**2.1 安装 Java 与 Scala **

进⼊之前的 Ubuntu 容器

先更换 apt 的源

**2.1.1 修改 apt **源

备份源

先删除就源⽂件，这个时候没有 vim ⼯具..

mike@ubuntu2204:~$ sudo docker ps -a

[sudo] password for mike:

CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS

NAMES

8016da5278ae newuhadoop "/bin/bash" 3 days ago Up 2 days

h05

409c7e8aa2e9 newuhadoop "/bin/bash" 3 days ago Up 2 days

h04

0d8af236e1e7 newuhadoop "/bin/bash" 3 days ago Up 2 days

h03

72d62b7d4874 newuhadoop "/bin/bash" 3 days ago Up 2 days

h02

d4d3ca3bbb61 newuhadoop "/bin/bash" 3 days ago Up 2 days 0.0.0.0:8088-

8088/tcp, :::8088->8088/tcp, 0.0.0.0:9870->9870/tcp, :::9870->9870/tcp h01

mike@ubuntu2204:~$

mike@ubuntu2204:~$ sudo docker start 27941809078c

mike@ubuntu2204:~$ sudo docker attach 27941809078c

mike@ubuntu2204:~$ sudo docker stop 27941809078c

root@27941809078c:/# cp /etc/apt/sources.list /etc/apt/sources_init.list

root@27941809078c:/#

root@27941809078c:/# rm /etc/apt/sources.list复制以下命令，回⻋，即可⼀键切换到阿⾥云 ubuntu 22.04镜像：（此时已经是root权限，提⽰符为

#）

再使⽤ apt update / apt upgrade 来更新，update更列表，upgrade更新包

**2.1.2 安装 Java与 Scala **

安装 jdk 1.8，直接输⼊命令

测试⼀下安装结果

接下来安装scala

测试⼀下安装结果

bash -c "cat << EOF > /etc/apt/sources.list && apt update

deb http://mirrors.aliyun.com/ubuntu/ jammy main restricted universe multiverse

deb-src http://mirrors.aliyun.com/ubuntu/ jammy main restricted universe

multiverse

deb http://mirrors.aliyun.com/ubuntu/ jammy-security main restricted universe

multiverse

deb-src http://mirrors.aliyun.com/ubuntu/ jammy-security main restricted universe

multiverse

deb http://mirrors.aliyun.com/ubuntu/ jammy-updates main restricted universe

multiverse

deb-src http://mirrors.aliyun.com/ubuntu/ jammy-updates main restricted universe

multiverse

deb http://mirrors.aliyun.com/ubuntu/ jammy-proposed main restricted universe

multiverse

deb-src http://mirrors.aliyun.com/ubuntu/ jammy-proposed main restricted universe

multiverse

deb http://mirrors.aliyun.com/ubuntu/ jammy-backports main restricted universe

multiverse

deb-src http://mirrors.aliyun.com/ubuntu/ jammy-backports main restricted

universe multiverse

EOF"

root@27941809078c:/# apt update

root@27941809078c:/# apt upgrade

root@27941809078c:/# apt install openjdk-8-jdk

root@27941809078c:/# java -version

openjdk version "1.8.0_312"

OpenJDK Runtime Environment (build 1.8.0_312-8u312-b07-0ubuntu1-b07)

OpenJDK 64-Bit Server VM (build 25.312-b07, mixed mode)

root@27941809078c:/#

root@27941809078c:/# apt install scala输⼊ :quit 退出scala

**2.2 安装 Hadoop **

在当前容器中将配置配好

导⼊出为镜像

以此镜像为基础创建五个容器，并赋予 hostname

进⼊ h01 容器，启动 Hadoop

**2.2.1 安装 Vim **与⽹络⼯具包

安装 vim，⽤来编辑⽂件

安装 net-tools、iputils-ping、iproute2⽹络⼯具包，⽬的是为了使⽤ping、ifconfig、ip、traceroute

等命令

**2.2.2 安装 SSH **

安装 SSH，并配置免密登录，由于后⾯的容器之间是由⼀个镜像启动的，就像同⼀个磨具出来的 5 把锁

与钥匙，可以互相开锁。所以在当前容器⾥配置 SSH ⾃⾝免密登录就 OK 了。

安装 SSH 服务器端

安装 SSH 的客⼾端

进⼊当前⽤⼾的⽤⼾根⽬录

⽣成密钥，不⽤输⼊，⼀直回⻋就⾏，⽣成的密钥在当前⽤⼾根⽬录下的 .ssh ⽂件夹中。以 . 开头

的⽂件与⽂件夹 ls 是隐藏的，需要 ls -al 才能查看。

将公钥追加到 authorized_keys ⽂件中

root@27941809078c:/# scala

Welcome to Scala 2.11.12 (OpenJDK 64-Bit Server VM, Java 1.8.0_312).

Type in expressions for evaluation. Or try :help.

scala>

root@27941809078c:/# apt install vim

root@27941809078c:/# apt install net-tools

root@27941809078c:/# apt install iputils-ping

root@27941809078c:/# apt install iproute2

root@27941809078c:/# apt install openssh-server

root@27941809078c:/# apt install openssh-client

root@27941809078c:/# cd ~

root@27941809078c:~#

root@27941809078c:~~# ssh-keygen -t rsa -P ""root@27941809078c:~~# cat .ssh/id_rsa.pub >> .ssh/authorized_keys

root@27941809078c:~#

启动 SSH 服务

root@27941809078c:~# service ssh start

Starting OpenBSD Secure Shell server sshd

[ OK ]

root@27941809078c:~#

免密登录⾃⼰

root@27941809078c:~# ssh 127.0.0.1

Welcome to Ubuntu 22.04 LTS (GNU/Linux 5.15.0-41-generic x86_64)

Documentation: https://help.ubuntu.com
Management: https://landscape.canonical.com
Support: https://ubuntu.com/advantage

This system has been minimized by removing packages and content that are

not required on a system that users do not log into.

To restore this content, you can run the 'unminimize' command.

Last login: Sun Jul 17 08:26:15 2022 from 172.18.0.1

Starting OpenBSD Secure Shell server sshd

root@27941809078c:~#

修改 .bashrc ⽂件，启动 shell 的时候，⾃动启动 SSH 服务

⽤ vim 打开 .bashrc ⽂件

root@27941809078c:~# vim ~/.bashrc

按⼀下 i 键，使得 vim 进⼊插⼊模式，此时终端的左下⻆会显⽰为 -- INSERT -- ，将光标移动到最后

⾯，添加⼀⾏（Caps + g 可直接到最后⼀⾏)

service ssh start

添加完的结果为，只显⽰最后⼏⾏

if [ -f ~/.bash_aliases ]; then

. ~/.bash_aliases

enable programmable completion features (you don't need to enable

this, if it's already enabled in /etc/bash.bashrc and /etc/profile

sources /etc/bash.bashrc).

#if [ -f /etc/bash_completion ] && ! shopt -oq posix; then

. /etc/bash_completion

#fi

service ssh start按⼀下 Esc 键，使得 vim 退出插⼊模式

再输⼊英⽂模式下的冒号 : ，此时终端的左下⽅会有⼀个冒号 : 显⽰出来

再输⼊三个字符 wq! ，这是⼀个组合命令

w 是保存的意思

q 是退出的意思

! 是强制的意思

再输⼊回⻋，退出 vim。

此时，SSH 免密登录已经完全配置好。

**2.2.3 安装 Hadoop **

下载 Hadoop 的安装⽂件

解压到 /usr/local ⽬录下⾯并重命名⽂件夹

修改 /etc/profile ⽂件，添加⼀下环境变量到⽂件中

先⽤ vim 打开 /etc/profile

追加以下内容

JAVA_HOME 为 JDK 安装路径，使⽤ apt 安装就是这个，⽤ update-alternatives --config java 可

查看

root@27941809078c:~# wget https://mirrors.aliyun.com/apache/hadoop/common/hadoop-

3.3.3/hadoop-3.3.3.tar.gz

root@27941809078c:~# tar -zxvf hadoop-3.3.3.tar.gz -C /usr/local/

root@27941809078c:~# cd /usr/local/

root@27941809078c:/usr/local# mv hadoop-3.3.3 hadoop

root@27941809078c:/usr/local#

vim /etc/profile

#java

export JAVA_HOME=/usr/lib/jvm/java-8-openjdk-amd64

export JRE_HOME=${JAVA_HOME}/jre

export CLASSPATH=.:${JAVA_HOME}/lib:${JRE_HOME}/lib

export PATH=${JAVA_HOME}/bin:$PATH

#hadoop

export HADOOP_HOME=/usr/local/hadoop

export PATH=$PATH:$HADOOP_HOME/bin:$HADOOP_HOME/sbin

export HADOOP_COMMON_HOME=$HADOOP_HOME

export HADOOP_HDFS_HOME=$HADOOP_HOME

export HADOOP_MAPRED_HOME=$HADOOP_HOME

export HADOOP_YARN_HOME=$HADOOP_HOME

export HADOOP_INSTALL=$HADOOP_HOME

export HADOOP_COMMON_LIB_NATIVE_DIR=$HADOOP_HOME/lib/native

export HADOOP_CONF_DIR=$HADOOP_HOME

export HADOOP_LIBEXEC_DIR=$HADOOP_HOME/libexec

export JAVA_LIBRARY_PATH=$HADOOP_HOME/lib/native:$JAVA_LIBRARY_PATH

export HADOOP_CONF_DIR=$HADOOP_PREFIX/etc/hadoopexport HDFS_DATANODE_USER=root

export HDFS_DATANODE_SECURE_USER=root

export HDFS_SECONDARYNAMENODE_USER=root

export HDFS_NAMENODE_USER=root

export YARN_RESOURCEMANAGER_USER=root

export YARN_NODEMANAGER_USER=root

使环境变量⽣效

root@27941809078c:/usr/local# source /etc/profile

root@27941809078c:/usr/local#

在⽬录 /usr/local/hadoop/etc/hadoop 下，修改6个重要配置⽂件

修改 hadoop-env.sh ⽂件，在⽂件末尾添加⼀下信息

export JAVA_HOME=/usr/lib/jvm/java-8-openjdk-amd64

export HDFS_NAMENODE_USER=root

export HDFS_DATANODE_USER=root

export HDFS_SECONDARYNAMENODE_USER=root

export YARN_RESOURCEMANAGER_USER=root

export YARN_NODEMANAGER_USER=root

修改 core-site.xml，修改为

<name>fs.default.name</name>

</property> <property>

<name>hadoop.tmp.dir</name>

<value>/home/hadoop3/hadoop/tmp</value>

</property> </configuration>

修改 hdfs-site.xml，修改为

<name>dfs.replication</name>

</property> <property>

<name>dfs.namenode.name.dir</name>

<value>/home/hadoop3/hadoop/hdfs/name</value>

</property> <property>

<name>dfs.namenode.data.dir</name>

<value>/home/hadoop3/hadoop/hdfs/data</value>

</property> </configuration>

修改 mapred-site.xml，修改为修改 yarn-site.xml，修改为

修改 worker 为

此时，hadoop已经配置好了

**2.2.4 在 Docker **中启动集群

先将当前容器导出为镜像，并查看当前镜像。使⽤ ctrl + p + q ，退出容器，回到宿主机

<name>mapreduce.framework.name</name>

</property> <property>

<name>mapreduce.application.classpath</name>

<value>

/usr/local/hadoop/etc/hadoop,

/usr/local/hadoop/share/hadoop/common/*,

/usr/local/hadoop/share/hadoop/common/lib/*,

/usr/local/hadoop/share/hadoop/hdfs/*,

/usr/local/hadoop/share/hadoop/hdfs/lib/*,

/usr/local/hadoop/share/hadoop/mapreduce/*,

/usr/local/hadoop/share/hadoop/mapreduce/lib/*,

/usr/local/hadoop/share/hadoop/yarn/*,

/usr/local/hadoop/share/hadoop/yarn/lib/*

</value> </property> </configuration> <configuration> <property>

<name>yarn.resourcemanager.hostname</name>

</property> <property>

<name>yarn.nodemanager.aux-services</name>

<value>mapreduce_shuffle</value>

</property> </configuration>

h01

h02

h03

h04

h05mike@ubuntu2204:~$ sudo docker commit -m "hadoop" -a "hadoop" 27941809078c

newuhadoop

sha256:648d8e082a231919faeaa14e09f5ce369b20879544576c03ef94074daf978823

mike@ubuntu2204:~$ sudo docker images

[sudo] password for mike:

REPOSITORY TAG IMAGE ID CREATED SIZE

newuhadoop latest fe08b5527281 4 days ago 2.11GB

ubuntu 22.04 27941809078c 6 weeks ago 77.8MB

mike@ubuntu2204:~$

启动 5 个终端，分别执⾏这⼏个命令

第⼀条命令启动的是 h01 是做 master 节点的，所以暴露了端⼝，以供访问 web ⻚⾯

mike@ubuntu2204:~$ sudo docker run -it --network hadoop -h "h01" --name "h01" -p

9870:9870 -p 8088:8088 newuhadoop /bin/bash

Starting OpenBSD Secure Shell server sshd

[ OK ]

root@h01:/#

其余的四条命令就是⼏乎⼀样的了，注意：启动容器后，使⽤ ctrl + p + q 退回到宿主机，之后再启动下

⼀个容器

mike@ubuntu2204:~$ sudo docker run -it --network hadoop -h "h02" --name "h02"

newuhadoop /bin/bash

[sudo] password for mike:

Starting OpenBSD Secure Shell server sshd

[ OK ]

root@h02:/#

mike@ubuntu2204:~$ sudo docker run -it --network hadoop -h "h03" --name "h03"

newuhadoop /bin/bash

[sudo] password for mike:

Starting OpenBSD Secure Shell server sshd

[ OK ]

root@h03:/#

mike@ubuntu2204:~$ sudo docker run -it --network hadoop -h "h04" --name "h04"

newuhadoop /bin/bash

[sudo] password for mike:

Starting OpenBSD Secure Shell server sshd

[ OK ]

root@h04:/#

mike@ubuntu2204:~$ sudo docker run -it --network hadoop -h "h05" --name "h05"

newuhadoop /bin/bash

[sudo] password for mike:

Starting OpenBSD Secure Shell server sshd

[ OK ]

root@h05:/#接下来，在 h01 主机中，启动 Haddop 集群

先进⾏格式化操作，不格式化操作，hdfs会起不来

root@h01:/usr/local/hadoop/bin# ./hadoop namenode -format

进⼊ hadoop 的 sbin ⽬录

root@h01:/# cd /usr/local/hadoop/sbin/

root@h01:/usr/local/hadoop/sbin#

启动 hadoop

root@h01:/usr/local/hadoop/sbin# ./start-all.sh

Starting namenodes on [h01]

h01: Warning: Permanently added 'h01,172.18.0.2' (ECDSA) to the list of known

hosts.

Starting datanodes

h05: Warning: Permanently added 'h05,172.18.0.6' (ECDSA) to the list of known

hosts.

h02: Warning: Permanently added 'h02,172.18.0.3' (ECDSA) to the list of known

hosts.

h03: Warning: Permanently added 'h03,172.18.0.4' (ECDSA) to the list of known

hosts.

h04: Warning: Permanently added 'h04,172.18.0.5' (ECDSA) to the list of known

hosts.

h03: WARNING: /usr/local/hadoop/logs does not exist. Creating.

h05: WARNING: /usr/local/hadoop/logs does not exist. Creating.

h02: WARNING: /usr/local/hadoop/logs does not exist. Creating.

h04: WARNING: /usr/local/hadoop/logs does not exist. Creating.

Starting secondary namenodes [h01]

Starting resourcemanager

Starting nodemanagers

root@h01:/usr/local/hadoop/sbin#

使⽤jps查看集群启动状态（这个状态不是固定不变的，随着应⽤不同⽽不同，但⾄少应该有3个）

root@h01:~# jps

10017 HRegionServer

10609 Master

9778 HQuorumPeer

8245 SecondaryNameNode

8087 DataNode

9881 HMaster

41081 Jps

10684 Worker

7965 NameNode

8477 ResourceManager

8591 NodeManager

root@h01:~#

使⽤命令 ./hdfs dfsadmin -report 可查看分布式⽂件系统的状态

root@h01:/usr/local/hadoop/bin# ./hdfs dfsadmin -report

Configured Capacity: 90810798080 (84.57 GB)Present Capacity: 24106247929 (22.45 GB)

DFS Remaining: 24097781497 (22.44 GB)

DFS Used: 8466432 (8.07 MB)

DFS Used%: 0.04%

Replicated Blocks:

Under replicated blocks: 0

Blocks with corrupt replicas: 0

Missing blocks: 0

Missing blocks (with replication factor 1): 0

Low redundancy blocks with highest priority to recover: 0

Pending deletion blocks: 0

Erasure Coded Block Groups:

Low redundancy block groups: 0

Block groups with corrupt internal blocks: 0

Missing block groups: 0

Low redundancy blocks with highest priority to recover: 0

Pending deletion blocks: 0

Live datanodes (5):

Name: 172.18.0.2:9866 (h01)

Hostname: h01

Decommission Status : Normal

Configured Capacity: 18162159616 (16.91 GB)

DFS Used: 2875392 (2.74 MB)

Non DFS Used: 11887669248 (11.07 GB)

DFS Remaining: 4712182185 (4.39 GB)

DFS Used%: 0.02%

DFS Remaining%: 25.95%

Configured Cache Capacity: 0 (0 B)

Cache Used: 0 (0 B)

Cache Remaining: 0 (0 B)

Cache Used%: 100.00%

Cache Remaining%: 0.00%

Xceivers: 10

Last contact: Wed Jul 20 04:55:01 GMT 2022

Last Block Report: Tue Jul 19 23:36:54 GMT 2022

Num of Blocks: 293

Name: 172.18.0.3:9866 (h02.hadoop)

Hostname: h02

Decommission Status : Normal

Configured Capacity: 18162159616 (16.91 GB)

DFS Used: 1396736 (1.33 MB)

Non DFS Used: 11889147904 (11.07 GB)

DFS Remaining: 4846399828 (4.51 GB)

DFS Used%: 0.01%

DFS Remaining%: 26.68%

Configured Cache Capacity: 0 (0 B)

Cache Used: 0 (0 B)

Cache Remaining: 0 (0 B)

Cache Used%: 100.00%

Cache Remaining%: 0.00%

Xceivers: 8

Last contact: Wed Jul 20 04:55:01 GMT 2022

Last Block Report: Tue Jul 19 23:51:39 GMT 2022Num of Blocks: 153

Name: 172.18.0.4:9866 (h03.hadoop)

Hostname: h03

Decommission Status : Normal

Configured Capacity: 18162159616 (16.91 GB)

DFS Used: 1323008 (1.26 MB)

Non DFS Used: 11889221632 (11.07 GB)

DFS Remaining: 5114835114 (4.76 GB)

DFS Used%: 0.01%

DFS Remaining%: 28.16%

Configured Cache Capacity: 0 (0 B)

Cache Used: 0 (0 B)

Cache Remaining: 0 (0 B)

Cache Used%: 100.00%

Cache Remaining%: 0.00%

Xceivers: 4

Last contact: Wed Jul 20 04:55:01 GMT 2022

Last Block Report: Wed Jul 20 02:14:39 GMT 2022

Num of Blocks: 151

Name: 172.18.0.5:9866 (h04.hadoop)

Hostname: h04

Decommission Status : Normal

Configured Capacity: 18162159616 (16.91 GB)

DFS Used: 1527808 (1.46 MB)

Non DFS Used: 11889016832 (11.07 GB)

DFS Remaining: 4712182185 (4.39 GB)

DFS Used%: 0.01%

DFS Remaining%: 25.95%

Configured Cache Capacity: 0 (0 B)

Cache Used: 0 (0 B)

Cache Remaining: 0 (0 B)

Cache Used%: 100.00%

Cache Remaining%: 0.00%

Xceivers: 10

Last contact: Wed Jul 20 04:55:01 GMT 2022

Last Block Report: Wed Jul 20 00:42:09 GMT 2022

Num of Blocks: 134

Name: 172.18.0.6:9866 (h05.hadoop)

Hostname: h05

Decommission Status : Normal

Configured Capacity: 18162159616 (16.91 GB)

DFS Used: 1343488 (1.28 MB)

Non DFS Used: 11889201152 (11.07 GB)

DFS Remaining: 4712182185 (4.39 GB)

DFS Used%: 0.01%

DFS Remaining%: 25.95%

Configured Cache Capacity: 0 (0 B)

Cache Used: 0 (0 B)

Cache Remaining: 0 (0 B)

Cache Used%: 100.00%

Cache Remaining%: 0.00%

Xceivers: 10访问宿主机的 8088 与 9870 端⼝就可以看到监控信息了

⾄此，Hadoop 集群已经构建好了

2.2.5 运⾏内置WordCount例⼦

把 license 作为需要统计的⽂件

在 HDFS 中创建 input ⽂件夹

Last contact: Wed Jul 20 04:55:01 GMT 2022

Last Block Report: Wed Jul 20 02:36:21 GMT 2022

Num of Blocks: 149

root@h01:/usr/local/hadoop/bin#

root@h01:/usr/local/hadoop# cat LICENSE.txt > file1.txt

root@h01:/usr/local/hadoop# lsroot@h01:/usr/local/hadoop/bin# ./hadoop fs -mkdir /input

root@h01:/usr/local/hadoop/bin#

上传 file1.txt ⽂件到 HDFS 中

root@h01:/usr/local/hadoop/bin# ./hadoop fs -put ../file1.txt /input

root@h01:/usr/local/hadoop/bin#

查看 HDFS 中 input ⽂件夹⾥的内容

root@h01:/usr/local/hadoop/bin# ./hadoop fs -ls /input

Found 1 items

-rw-r--r-- 2 root supergroup 15217 2022-07-17 08:50 /input/file1.txt

root@h01:/usr/local/hadoop/bin#

运⾏wordcount 例⼦程序

root@h01:/usr/local/hadoop/bin# ./hadoop jar ../share/hadoop/mapreduce/hadoop

mapreduce-examples-3.3.3.jar wordcount /input /output

输出如下：

root@h01:/usr/local/hadoop/bin# ./hadoop jar ../share/hadoop/mapreduce/hadoop

mapreduce-examples-3.3.3.jar wordcount /input /output

2022-07-20 05:12:38,394 INFO client.DefaultNoHARMFailoverProxyProvider:

Connecting to ResourceManager at h01/172.18.0.2:8032

2022-07-20 05:12:38,816 INFO mapreduce.JobResourceUploader: Disabling Erasure

Coding for path: /tmp/hadoop-yarn/staging/root/.staging/job_1658047711391_0002

2022-07-20 05:12:39,076 INFO input.FileInputFormat: Total input files to process

: 1

2022-07-20 05:12:39,198 INFO mapreduce.JobSubmitter: number of splits:1

2022-07-20 05:12:39,399 INFO mapreduce.JobSubmitter: Submitting tokens for job:

job_1658047711391_0002

2022-07-20 05:12:39,399 INFO mapreduce.JobSubmitter: Executing with tokens: []

2022-07-20 05:12:39,674 INFO conf.Configuration: resource-types.xml not found

2022-07-20 05:12:39,674 INFO resource.ResourceUtils: Unable to find 'resource

types.xml'.

2022-07-20 05:12:39,836 INFO impl.YarnClientImpl: Submitted application

application_1658047711391_0002

2022-07-20 05:12:39,880 INFO mapreduce.Job: The url to track the job:

http://h01:8088/proxy/application_1658047711391_0002/

2022-07-20 05:12:39,882 INFO mapreduce.Job: Running job: job_1658047711391_0002

2022-07-20 05:12:49,171 INFO mapreduce.Job: Job job_1658047711391_0002 running in

uber mode : false

2022-07-20 05:12:49,174 INFO mapreduce.Job: map 0% reduce 0%

2022-07-20 05:12:54,285 INFO mapreduce.Job: map 100% reduce 0%

2022-07-20 05:13:01,356 INFO mapreduce.Job: map 100% reduce 100%

2022-07-20 05:13:02,391 INFO mapreduce.Job: Job job_1658047711391_0002 completed

successfully

2022-07-20 05:13:02,524 INFO mapreduce.Job: Counters: 54

File System Counters

FILE: Number of bytes read=12507

FILE: Number of bytes written=577413

FILE: Number of read operations=0FILE: Number of large read operations=0

FILE: Number of write operations=0

HDFS: Number of bytes read=15313

HDFS: Number of bytes written=9894

HDFS: Number of read operations=8

HDFS: Number of large read operations=0

HDFS: Number of write operations=2

HDFS: Number of bytes read erasure-coded=0

Job Counters

Launched map tasks=1

Launched reduce tasks=1

Data-local map tasks=1

Total time spent by all maps in occupied slots (ms)=3141

Total time spent by all reduces in occupied slots (ms)=3811

Total time spent by all map tasks (ms)=3141

Total time spent by all reduce tasks (ms)=3811

Total vcore-milliseconds taken by all map tasks=3141

Total vcore-milliseconds taken by all reduce tasks=3811

Total megabyte-milliseconds taken by all map tasks=3216384

Total megabyte-milliseconds taken by all reduce tasks=3902464

Map-Reduce Framework

Map input records=270

Map output records=1672

Map output bytes=20756

Map output materialized bytes=12507

Input split bytes=96

Combine input records=1672

Combine output records=657

Reduce input groups=657

Reduce shuffle bytes=12507

Reduce input records=657

Reduce output records=657

Spilled Records=1314

Shuffled Maps =1

Failed Shuffles=0

Merged Map outputs=1

GC time elapsed (ms)=126

CPU time spent (ms)=1110

Physical memory (bytes) snapshot=474148864

Virtual memory (bytes) snapshot=5063700480

Total committed heap usage (bytes)=450887680

Peak Map Physical memory (bytes)=288309248

Peak Map Virtual memory (bytes)=2528395264

Peak Reduce Physical memory (bytes)=185839616

Peak Reduce Virtual memory (bytes)=2535305216

Shuffle Errors

BAD_ID=0

CONNECTION=0

IO_ERROR=0

WRONG_LENGTH=0

WRONG_MAP=0

WRONG_REDUCE=0

File Input Format Counters

Bytes Read=15217

File Output Format Counters

Bytes Written=9894

root@h01:/usr/local/hadoop/bin#查看 HDFS 中的 /output ⽂件夹的内容

查看 part-r-00000 ⽂件的内容

⾄此，hadoop部分已经结束

**2.3 安装 Hbase **

在 Hadoop 集群的基础上安装 Hbase

下载 Hbase 3.0.0

解压到 /usr/local ⽬录下⾯

修改 /etc/profile 环境变量⽂件，添加 Hbase 的环境变量，追加下述代码

使环境变量配置⽂件⽣效

使⽤ ssh h02 可进⼊h02容器，修改profile⽂件如上。依次修改h03、h04、h05

即是每个容器都要在 /etc/profile ⽂件后追加那两⾏环境变量

在⽬录 /usr/local/hbase**-****3.0.0/conf **修改配置

修改 hbase-env.sh，追加

修改 hbase-site.xml 为

root@h01:/usr/local/hadoop/bin# ./hadoop fs -ls /output

Found 2 items

-rw-r--r-- 2 root supergroup 0 2022-07-20 05:13 /output/_SUCCESS

-rw-r--r-- 2 root supergroup 9894 2022-07-20 05:13 /output/part-r-00000

root@h01:/usr/local/hadoop/bin#

root@h01:/usr/local/hadoop/bin# ./hadoop fs -cat /output/part-r-00000

root@h01:~# wget https://mirrors.tuna.tsinghua.edu.cn/apache/hbase/3.0.0-alpha-

3/hbase-3.0.0-alpha-3-bin.tar.gz

root@h01:~# tar -zxvf hbase-3.0.0-bin.tar.gz -C /usr/local/

export HBASE_HOME=/usr/local/hbase-3.0.0

export PATH=$PATH:$HBASE_HOME/bin

root@h01:/usr/local# source /etc/profile

root@h01:/usr/local#

export JAVA_HOME=/usr/lib/jvm/java-8-openjdk-amd64

export HBASE_MANAGES_ZK=true

<name>hbase.rootdir</name><value>hdfs://h01:9000/hbase</value>

</property> <property>

<name>hbase.cluster.distributed</name>

</property> <property>

<name>hbase.master</name>

</property> <property>

<name>hbase.zookeeper.quorum</name>

</property> <property>

<name>hbase.zookeeper.property.dataDir</name>

<value>/home/hadoop/zoodata</value>

</property> </configuration>

修改 regionservers ⽂件为

h01

h02

h03

h04

h05

使⽤ scp 命令将配置好的 Hbase 复制到其他 4 个容器中

root@h01:~# scp -r /usr/local/hbase-3.0.0 root@h02:/usr/local/

root@h01:~# scp -r /usr/local/hbase-3.0.0 root@h03:/usr/local/

root@h01:~# scp -r /usr/local/hbase-3.0.0 root@h04:/usr/local/

root@h01:~# scp -r /usr/local/hbase-3.0.0 root@h05:/usr/local/

启动 Hbaseroot@h01:/usr/local/hbase-3.0.0/bin# ./start-hbase.sh

h04: running zookeeper, logging to /usr/local/hbase-3.0.0/bin/../logs/hbase-root

zookeeper-h04.out

h02: running zookeeper, logging to /usr/local/hbase-3.0.0/bin/../logs/hbase-root

zookeeper-h02.out

h03: running zookeeper, logging to /usr/local/hbase-3.0.0/bin/../logs/hbase-root

zookeeper-h03.out

h05: running zookeeper, logging to /usr/local/hbase-3.0.0/bin/../logs/hbase-root

zookeeper-h05.out

h01: running zookeeper, logging to /usr/local/hbase-3.0.0/bin/../logs/hbase-root

zookeeper-h01.out

running master, logging to /usr/local/hbase-3.0.0/bin/../logs/hbase--master

h01.out

h05: running regionserver, logging to /usr/local/hbase-3.0.0/bin/../logs/hbase

root-regionserver-h05.out

h01: running regionserver, logging to /usr/local/hbase-3.0.0/bin/../logs/hbase

root-regionserver-h01.out

h04: running regionserver, logging to /usr/local/hbase-3.0.0/bin/../logs/hbase

root-regionserver-h04.out

h03: running regionserver, logging to /usr/local/hbase-3.0.0/bin/../logs/hbase

root-regionserver-h03.out

h02: running regionserver, logging to /usr/local/hbase-3.0.0/bin/../logs/hbase

root-regionserver-h02.out

root@h01:/usr/local/hbase-3.0.0/bin#

打开 Hbase 的 shell

root@h01:/usr/local/hbase-3.0.0/bin# ./hbase shell

HBase Shell

Use "help" to get list of supported commands.

Use "exit" to quit this interactive shell.

For Reference, please visit: http://hbase.apache.org/book.html#shell

Version 3.0.0-alpha-3, rb3657484850f9fa9679f2186bf53e7df768f21c7, Wed Jun 15

07:56:54 UTC 2022

Took 0.0017 seconds

hbase:001:0>

hbase测试

创建表member

hbase:006:0> create 'member','id','address','info'

Created table member

Took 0.6838 seconds

=> Hbase::Table - member

hbase:007:0>

添加数据，并查看表中数据

hbase:007:0> put 'member', 'debugo','id','11'

Took 0.1258 seconds

hbase:008:0> put 'member', 'debugo','info:age','27'**2.4 安装 Spark **

在 Hadoop 的基础上安装 Spark

下载 Spark 3.3.0

解压到 /usr/local ⽬录下⾯

修改⽂件夹的名字

修改 /etc/profile 环境变量⽂件，添加 Hbase 的环境变量，追加下述代码

使环境变量配置⽂件⽣效

使⽤ ssh h02 可进⼊其他四个容器，依次修改。

即是每个容器都要在 /etc/profile ⽂件后追加那两⾏环境变量

在⽬录 /usr/local/spark**-****3.3.0/conf **修改配置

修改⽂件名

Took 0.0108 seconds

hbase:009:0> count 'member'

1 row(s)

Took 0.0499 seconds

=> 1

hbase:010:0> scan 'member'

ROW COLUMN+CELL

debugo column=id:, timestamp=2022-07-

20T05:37:58.720, value=11

debugo column=info:age, timestamp=2022-07-

20T05:38:11.302, value=27

1 row(s)

Took 0.0384 seconds

hbase:011:0>

root@h01:~# wget https://mirrors.tuna.tsinghua.edu.cn/apache/spark/spark-

3.3.0/spark-3.3.0-bin-hadoop3.tgz

root@h01:~# tar -zxvf spark-3.3.0-bin-hadoop3.tgz -C /usr/local/

root@h01:~# cd /usr/local/

root@h01:/usr/local# mv spark-3.3.0-bin-hadoop3 spark-3.3.0

export SPARK_HOME=/usr/local/spark-3.3.0

export PATH=$PATH:$SPARK_HOME/bin

root@h01:/usr/local# source /etc/profile

root@h01:/usr/local#修改 spark-env.sh，追加

修改⽂件名

修改 slaves 如下

使⽤ scp 命令将配置好的 Hbase 复制到其他 4 个容器中

启动 Spark

**3 **其他

root@h01:/usr/local/spark-3.3.0/conf# mv spark-env.sh.template spark-env.sh

root@h01:/usr/local/spark-3.3.0/conf#

export JAVA_HOME=/usr/lib/jvm/java-8-openjdk-amd64

export HADOOP_HOME=/usr/local/hadoop

export HADOOP_CONF_DIR=/usr/local/hadoop/etc/hadoop

export SCALA_HOME=/usr/share/scala

export SPARK_MASTER_HOST=h01

export SPARK_MASTER_IP=h01

export SPARK_WORKER_MEMORY=4g

root@h01:/usr/local/spark-3.3.0/conf# mv slaves.template slaves

root@h01:/usr/local/spark-3.3.0/conf#

h01

h02

h03

h04

h05

root@h01:/usr/local# scp -r /usr/local/spark-3.3.0 root@h02:/usr/local/

root@h01:/usr/local# scp -r /usr/local/spark-3.3.0 root@h03:/usr/local/

root@h01:/usr/local# scp -r /usr/local/spark-3.3.0 root@h04:/usr/local/

root@h01:/usr/local# scp -r /usr/local/spark-3.3.0 root@h05:/usr/local/

root@h01:/usr/local/spark-3.3.0/sbin# ./start-all.sh

starting org.apache.spark.deploy.master.Master, logging to /usr/local/spark-

3.3.0/logs/spark--org.apache.spark.deploy.master.Master-1-h01.out

h03: starting org.apache.spark.deploy.worker.Worker, logging to /usr/local/spark-

3.3.0/logs/spark-root-org.apache.spark.deploy.worker.Worker-1-h03.out

h02: starting org.apache.spark.deploy.worker.Worker, logging to /usr/local/spark-

3.3.0/logs/spark-root-org.apache.spark.deploy.worker.Worker-1-h02.out

h04: starting org.apache.spark.deploy.worker.Worker, logging to /usr/local/spark-

3.3.0/logs/spark-root-org.apache.spark.deploy.worker.Worker-1-h04.out

h05: starting org.apache.spark.deploy.worker.Worker, logging to /usr/local/spark-

3.3.0/logs/spark-root-org.apache.spark.deploy.worker.Worker-1-h05.out

h01: starting org.apache.spark.deploy.worker.Worker, logging to /usr/local/spark-

3.3.0/logs/spark-root-org.apache.spark.deploy.worker.Worker-1-h01.out

root@h01:/usr/local/spark-3.3.0/sbin#**3.1 HDFS **重格式化问题

参考 https://blog.csdn.net/gis_101/article/details/52821946

重新格式化意味着集群的数据会被全部删除，格式化前需考虑数据备份或转移问题；

先删除主节点（即namenode节点），Hadoop的临时存储⽬录tmp、namenode存储永久性元数

据⽬录dfs/name、Hadoop系统⽇志⽂件⽬录log 中的内容（注意是删除⽬录下的内容不是⽬

录）；

删除所有数据节点(即datanode节点) ，Hadoop的临时存储⽬录tmp、namenode存储永久性元数

据⽬录dfs/name、Hadoop系统⽇志⽂件⽬录log 中的内容；

格式化⼀个新的分布式⽂件系统：

注意事项:

Hadoop的临时存储⽬录tmp（即core-site.xml配置⽂件中的hadoop.tmp.dir属性，默认值

是/tmp/hadoop-${user.name}），如果没有配置hadoop.tmp.dir属性，那么hadoop格式化时将

会在/tmp⽬录下创建⼀个⽬录，例如在cloud⽤⼾下安装配置hadoop，那么Hadoop的临时存储⽬

录就位于/tmp/hadoop-cloud⽬录下

Hadoop的namenode元数据⽬录（即hdfs-site.xml配置⽂件中的dfs.namenode.name.dir属性，

默认值是${hadoop.tmp.dir}/dfs/name），同样如果没有配置该属性，那么hadoop在格式化时将

⾃⾏创建。必须注意的是在格式化前必须清楚所有⼦节点（即DataNode节点）dfs/name下的内

容，否则在启动hadoop时⼦节点的守护进程会启动失败。这是由于，每⼀次format主节点

namenode，dfs/name/current⽬录下的VERSION⽂件会产⽣新的clusterID、namespaceID。但

是如果⼦节点的dfs/name/current仍存在，hadoop格式化时就不会重建该⽬录，因此形成⼦节点

的clusterID、namespaceID与主节点（即namenode节点）的clusterID、namespaceID不⼀致。

最终导致hadoop启动失败。

root@h01:/usr/local/hadoop/bin# ./hadoop namenode -format

标签： hadoop eureka 大数据

本文转载自: https://blog.csdn.net/qq_40992158/article/details/133377977
版权归原作者 汉卿HanQ 所有，如有侵权，请联系我们删除。

docer安装hadoop

enable programmable completion features (you don't need to enable

this, if it's already enabled in /etc/bash.bashrc and /etc/profile

sources /etc/bash.bashrc).

. /etc/bash_completion

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