CentOS7.6 install Elasticsearch7.2

Elasticsearch installation

Create a dedicated user for Elasticsearch

1. increase user

   useradd -d /home/es -m es

   2. Set password

   passwd es

 

Install Elasticsearch

1. Use  root user upload  es installation package

scp elasticsearch-7.2.0-linux-x86_64.tar.gz [email protected]:/download/

 

1. Unzip

   tar -zxvf elasticsearch-7.2.0-linux-x86_64.tar.gz

 

Modify the configuration file

1. Modify the  elasticsearch.yml configuration file

2. modify limits.conf

   vi /etc/security/limits.conf

3. Add the following content

   * soft  nofile 65536
   * hard  nofile 65536
   * soft  nproc  4096
   * hard  nproc  4096

4. Modify the configuration file to  sysctl.conf add the following configuration

   vi /etc/sysctl.conf
   vm.max_map_count=655360

5. Execute the command to take effect

   sysctl -p

JAVA environment installation (JDK 1.12)

installation

1. Use  root user upload  JDK installation package

   scp jdk-12.0.1_linux-x64_bin.tar.gz [email protected]:/download/

 

1. Create java installation directory

   mkdir /usr/local/java/

   3. Unzip to the installation directory

   tar -zxvf jdk-12.0.1_linux-x64_bin.tar.gz -C /usr/local/java/

 

Set environment variables

1. open a file

   vim /etc/profile

2. Add at the end

   JAVA_HOME=/usr/local/java/jdk-12.0.1
   CLASSPATH=$JAVA_HOME/lib/
   PATH=$PATH:$JAVA_HOME/bin
   export PATH JAVA_HOME CLASSPATH

3. Make environment variables take effect

   source /etc/profile

Check if the installation is successful

    java -version

 

start up Elasticsearch

cd /download/elasticsearch-7.2.0/
# 前台启动
./bin/elasticsearch

# 后台启动
./bin/elasticsearch -d

 

Check if the installation is successful

Please visit http://ip地址:9200

 

If the above prompt appears, the  Elasticsearch installation is successful