Hadoop伪分布式搭建步骤

太过爱你忘了你带给我的痛 2024-04-07 10:11 96阅读 0赞

**Hadoop\*\*\*\*伪分布式搭建步骤**

一、环境准备

进入超级用户：

![20565e1e372844ddaabc0d901fd26f30.png][]

二、安装ssh：

![51122bdf3f4f4779ab26b0f4547bea8d.png][]

生成秘钥文件，无密码访问：

![d16b198609924ef8becebc6aa568a925.png][]

进入无密码访问目录：/root/.ssh/

![9b900cc79f69413c8d8144936f6621e2.png][]

生成authorized\_keys秘钥文件

![7163a193dac948ebada18803c8712299.png][]

修改/etc/hosts文件内容，将IP地址与计算机名关联起来。

vi /etc/hosts

![4ccc491895e746b8baf0602da11fa16a.png][]

测试无密码登录是否成功：

![77d021b1e32b47909790284fa4b3f1b2.png][]

登录成功后，请用exit命令退出远程登录。

二、安装Java语言（jdk）

1.  在/home/czc/下创建文件夹wei。

![3215c71014084d70ae9789898504ab60.png][]

2、解压jdk软件包到wei文件夹下。

![4f1f750ee98948a2a5be32afb158b183.png][]

1.  到解压的文件夹里去查看

![a28d096a45fe41f0a12e7382f2d6a9cd.png][]

4、为了后面书写简单，改一下文件夹的名字。

![b89953f5ab1043bf91c74c4020952f24.png][]

1.  编辑Java变量环境文件：/etc/profile:

![54d8f01997054726b1a017ce5c05dcd7.png][]

最后添加两行：

![8aca3a269f144985ad7507d952fe1bbb.png][]

6、使刚刚编辑的环境生效：

![4d4bc987c4c6459da23315b4b88c9d40.png][]

7、测试是否安装成功：

![12a85cb41abb4e9cafbee31a1ee67d18.png][]

三、安装hadoop

将hadoop软件包解压到/home/czc/wei/下（注意路径）：

![6f9e6a77079146a79ab869e859b6cad1.png][]

进入hadoop目录，并查看核心文件夹：

![39bbdcf3a22f4729ad0394fa53fe4367.png][]

进入hadoop配置文件的目录下：

![c614c172fd84490797983e296aeb135a.png][]

查看主要配置文件：

![ddebeb773b5e49be8244237d77404f09.png][]

修改hadoop-env.sh文件内容：

vi hadoop-env.sh

![98a584ef6df448b2b8e12a86ebdf937f.png][]

修改core-site.xml内容：

![a4e7c473da0c4b52889c445170959cd8.png][]

修改hdfs-site.xml内容：

![ba88ec49b28c42f294b94eeac7f477df.png][]

复制成一个新文件：

![5d3f0b4d80ad4373a8eee2b1d89b47b1.png][]

修改该文件内容:

![879350cb2b004adbb039c328eb25fe08.png][]

修改yarn-site.xml文件内容：

![6331581ba28143fcac866160ec27099f.png][]

修改slaves文件内容

![c8749a6198204b3ba78c35a01c512e3e.png][]

配置环境变量，使hadoop命令正常执行，（修改环境变量，/etc/profile文件）

![60033ec1f65049af9ea5bef02fe2246c.png][]

![6954f90847f54506afef378bc560281c.png][]

用source /etc/profile 命令更新：

![be0e6e45e24e4f9c9f357427dc7f91b8.png][]

测试Hadoop安装是否成功：

![03d25e0e466c46f88ba118141308b48f.png][]

格式化namenode

![dcc7c1b9626d4915ad4b1b9b50926ba9.png][]

![240711e8f47642b9afe92d407f297967.png][]

配置全部完成，对hadoop结构进行启动，（可以分布启动，也可以一次启动）

![b5ac74e0851e4390bdf4f153b3f09c2c.png][]

查看进程（6个）

![396a67ffdbaa4e0bac0f36e26adb41d4.png][]

注意：如果没有6个进程，请先关闭所有进程（stop-all.sh），再到5个配置文件中去修改，再运行，直到出现6个进程。

![e4536c965dda4b10a402af4c01162598.png][]

打开浏览器，用web页来测试：

端口50070，8088

![70433f8ba99047d5be8925cff9c016a2.png][]

![f64f54aebcf34c33b4d8bb53f3fcd4a5.png][]

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