> For the complete documentation index, see [llms.txt](https://docs2.kafka-eagle.org/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs2.kafka-eagle.org/2.env-and-install/1.env.md).

# 1.Env

## 1.Install JDK

If there is a JDK environment on the Linux server, this step can be ignored, and the installation of the second section of the link. If there is no JDK, first to the Oracle official website to download JDK, [Download](http://www.oracle.com/technetwork/java/javase/downloads/index.html).

## 2.JAVA\_HOME Configure

JDK extract can according to their actual situation to want to extract the path, here we extract to unzip `/usr/java/jdk1.8` , as shown below:

```bash
cd /usr/java
tar -zxvf jdk-xxxx.tar.gz
mv jdk-xxxx jdk1.8
...
vi /etc/profile

export JAVA_HOME=/usr/java/jdk1.8
export PATH=$PATH:$JAVA_HOME/bin
```

Then, we use the `. /etc/profile` to enable the configuration to take effect immediately.

`PS: If the authority is insufficient, please use the sudo command`

Finally, we input `java -version`, according to the following information:

```bash
java version "1.8.0_60"
Java(TM) SE Runtime Environment (build 1.8.0_60-b27)
Java HotSpot(TM) 64-Bit Server VM (build 25.60-b23, mixed mode)
```