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Editor to share with you how to install Hadoop, I believe most people do not know much about it, so share this article for your reference, I hope you can learn a lot after reading this article, let's go to know it!

1 install dual system

Install the Hadoop software family, preferably on Linux systems such as Ubuntu. If your system is Windows, it is recommended to install another Ubuntu to form a dual system, so that you can give full play to the characteristics of their respective systems.

Use U disk to make a system, take out a partition as a newly installed system, boot up and install, select the newly vacated space and divide it into 4 partitions. This is probably the process. There are many online tutorials, which can be used for reference.

2 the source of the tutorial

This Hadoop course is produced by Lin Ziyu teacher team of Xiamen University. It can be said that the introduction is very professional and meticulous. According to this tutorial, you can basically install Hadoop at one time.

3 installation steps

1) it is not necessary to create Hadoop users. It is recommended for beginners to refer to this step.

2) Update apt

3) install ssh and configure ssh login without password

4) install Java environment

5) install Hadoop2

6) stand-alone configuration of Hadoop

7) pseudo-distributed configuration of Hadoop

8) run

4 easy to make mistakes

It is best to check each of the above steps. They are all interdependent. At the same time, it is recommended to install the pseudo-distributed version, which mainly involves two configuration files: core-site.xml and hdfs-site.xml. The configuration is as follows:

Core-site.xml

Hdfs-site.xml starts Hadoop by executing / sbin/start-dfs.sh, as shown in the following figure, creating one DataNode node and two NameNode nodes.

The above is all the contents of the article "how to install Hadoop". Thank you for reading! I believe we all have a certain understanding, hope to share the content to help you, if you want to learn more knowledge, welcome to follow the industry information channel!

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