Caused by: java.lang.RuntimeException: can not run elasticsearch as root

Caused by: java.lang.RuntimeException: can not run elasticsearch as root

爆报错截图如下：此错误是在centos7中启动elasticsearch6.0是报的错，原因报错中也已经写明是因为elasticsearch不能用root用户启动，解决方法如下：1.需要新建个用户组与用户：

groupadd elsearch
useradd elsearch -g elsearch
passwd elsearch

2.给用户赋予权限

cd /opt
chown -R elsearch:elsearch  elasticsearch-6.0.1

3.再次切换用户重新启动：

su elsearch 
cd /optelasticsearch-6.0.1/bin
./elasticsearch