# How to install Java / Logstash on client side

The following are the steps to install Java and LogStash on various Operating systems.

#### 1) CentOS - v6/7

a) Install Java by downloading the software and

```
>>> sudo wget http://mirror.centos.org/centos/7/updates/x86_64/Packages/java-11-openjdk-11.0.4.11-1.el7_7.x86_64.rpm
>>> sudo rpm -Uvh java-11-openjdk-11.0.4.11-1.el7_7.x86_64.rpm 
```

b) Check installed Java version

```
>>> java -version
```

c) Install Logstash-7.1.1

```
>>> curl -L -O https://artifacts.elastic.co/downloads/logstash/logstash-7.1.1.rpm
>>> sudo rpm -ivh logstash-oss-7.1.1.rpm
```

d) Start and Stop Logstash services, use the following commands

```
>>> sudo service logstash start/stop/restart (for CentOS-6)
>>> sudo systemctl start/stop/restart logstash (for CentOS-7)
You can enable autostart of Logstash services when system reboots using the following command
>>> sudo service logstash enable (or) 
>>> sudo systemctl enable logstash
```

#### 2) RHEL OS 6 / 7

a) Install Java

```
>>> sudo wget http://mirror.centos.org/centos/7/updates/x86_64/Packages/java-11-openjdk-11.0.4.11-1.el7_7.x86_64.rpm
>>> sudo rpm -ivh java-11-openjdk-11.0.4.11-1.el7_7.x86_64.rpm
```

b) Check Java Version

```
>>> java -version
```

c) Install LogStash-7.1.1

```
>>> curl -L -O https://artifacts.elastic.co/downloads/logstash/logstash-7.1.1.rpm
>>> sudo rpm -ivh logstash-oss-7.1.1.rpm
```

d) To stop and Stop Logstash services, use the following commands

```
>>> sudo service logstash start/stop/restart (for RHEL-6)
>>> sudo systemctl start/stop/restart logstash (for RHEL-7)
```

e) To auto start logstash services when system reboot follow the below commands.

```
>>> sudo service logstash enable (or) sudo systemctl enable logstash
>>> sudo chkconfig --add logstash --level on
```

3\) Ubuntu 16.04/18.04 OS:

a) Install Java

```
>>> sudo add-apt-repository ppa:linuxuprising/java
>>> sudo apt update
>>> sudo apt install openjdk-11-jre-headless

If above procedure fails, follow the following:
>>> sudo curl -O https://download.java.net/java/GA/jdk11/9/GPL/openjdk-11.0.2_linux-x64_bin.tar.gz
>>> sudo tar zxvf openjdk-11.0.2_linux-x64_bin.tar.gz
>>> sudo mv jdk-11* /usr/local/
>>> sudo vim /etc/profile.d/jdk.sh add below two lines and save the file
export JAVA_HOME=/usr/local/jdk-11.0.2
export PATH=$PATH:$JAVA_HOME/bin

>>> source /etc/profile
```

b) Check Java Version

```
>>> java -version
```

c) Install Logstash-7.1.1

```
>>> sudo curl -L -O https://artifacts.elastic.co/downloads/logstash/logstash-7.1.1.deb
>>> sudo dpkg -i logstash-7.1.1.deb
>>> sudo service logstash start/stop

```

d) To auto start logstash services when system reboot, enter the following commands

```
>>> sudo service logstash enable (or) sudo systemctl enable logstash
>>> sudo chkconfig --add logstash --level on

```

#### 3) Oracle Enterprise Linux (OEL 6 / OEL 7)

a) Install Java

```
>>> sudo wget http://mirror.centos.org/centos/7/updates/x86_64/Packages/java-11-openjdk-11.0.4.11-1.el7_7.x86_64.rpm
>>> sudo rpm -ivh java-11-openjdk-11.0.4.11-1.el7_7.x86_64.rpm

```

b) Check Java Version

```
>>> java -version
```

c) Install LogStash-7.1.1

```
>>> curl -L -O https://artifacts.elastic.co/downloads/logstash/logstash-7.1.1.rpm
>>> sudo rpm -ivh logstash-oss-7.1.1.rpm
>>> sudo initctl start logstash
>>> sudo initctl stop logstash

```

d) To autostart logstash service when system reboots, enter the following commands

```
>>> sudo service logstash enable (or) sudo systemctl enable logstash
>>> sudo chkconfig --add logstash --level on

```

#### 4) Debian Linux v8/v9

a) Install Java

```
>>> sudo apt update
>>> sudo apt install openjdk-11-jdk

```

**Note: If the above step failed, download java deb package by following the link below**

[**https://www.oracle.com/technetwork/java/javase/downloads/jdk11-downloads-5066655.html**](https://www.oracle.com/technetwork/java/javase/downloads/jdk11-downloads-5066655.html)\
Copy the package to the server and execute below command<br>

```
>>> sudo dpkg -i jdk-11.0.2_linux-x64_bin.deb
```

b) Check Java Version

```
>>> java --version
```

c) Install Logstash-7.1.1

```
>>> sudo curl -L -O https://artifacts.elastic.co/downloads/logstash/logstash-7.1.1.deb
>>> sudo dpkg -i logstash-7.1.1.deb
>>> sudo service logstash start/stop/restart 
```

d) To auto start logstash when system reboots, enter the following commands

```
>>> sudo service logstash enable (or) sudo systemctl enable logstash
>>> sudo chkconfig --add logstash --level on
```

#### 5) SLES OS

a) Install Java

```
>>> wget http://mirror.centos.org/centos/7/updates/x86_64/Packages/java-11-openjdk-11.0.4.11-1.el7_7.x86_64.rpm
>>> sudo rpm -ivh java-11-openjdk-11.0.4.11-1.el7_7.x86_64.rpm

```

b) Check Java version

```
>>> java --version
```

c) Install Logstash

```
>>> curl -L -O https://artifacts.elastic.co/downloads/logstash/logstash-7.1.1.rpm
>>> sudo rpm -ivh logstash-oss-7.1.1.rpm
>>> sudo service logstash start/stop/restart
```

d) To auto start logstash when system reboots follow below commands

```
>>> sudo service logstash enable (or) sudo systemctl enable logstash
>>> sudo chkconfig --add logstash --level on

```


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