CentOS7 (single node) mounted elasticsearch

1. Download the installation package
2. Upload to Linux
3. decompression:

cd /usr/local/tars

tar -zxvf elasticsearch-5.6.2.tar.gz -C /usr/local

4. New Directory

cd /usr/local/elasticsearch-5.6.2

mkdir data                    
mkdir logs     

5. modify the configuration file:

cd /usr/local/elasticsearch-5.6.2/config

vi elasticsearch.yml

Modifications are as follows:

cluster.name: my-application

node.name: hadoop1

path.data: /usr/local/elasticsearch-5.6.2/data

path.logs: /usr/local/elasticsearch-5.6.2/logs

bootstrap.memory_lock: false
bootstrap.system_call_filter: false

network.host: hadoop1

discovery.zen.ping.unicast.hosts: ["hadoop1"]

6. Modify limits.conf file

vi /etc/security/limits.conf

//在文件末尾添加如下内容

* soft nofile 655360
* hard nofile 131072
* soft nproc 4096
* hard nproc 4096

File under 7. Modify limit.d

vi /etc/security/limits.d/20-nproc.conf

//修改内容如下
*    soft    nproc    1024
//改为
*    soft    nproc    4096

8. Modify the sysctl.conf file

vi /etc/sysctl.conf

//添加内容
vm.max_map_count=655360

9. New User, elasticsearch root user can not start

useradd hduser

cd /user/local

chown -R hduser ./elasticsearch-5.6.2/
chgrp -R hduser ./elasticsearch-5.6.2/

10. Switch to hduser user, start elasticsearch

su hduser

cd /usr/local/elasticsearch-5.6.2

./bin/elasticsearch -d                              //后台启动