1.java.nio.file.AccessDeniedException: /home/leyou/elasticsearch/config/jvm.options 文件权限不足要切换到root用户下赋予权限。
chown -R leyou:leyou /home/leyou/elasticsearch/
2.max file descriptors [65535] for elasticsearch process is too low, increase to at least [65536]
vim /etc/security/limits.conf 在系统limits.conf的最后面加上就好 * soft nofile 65536 * hard nofile 65536 * soft nproc 4096 * hard nproc 4096
3.max virtual memory areas vm.max_map_count [65530] is too low, increase to at least [262144]
提高系统的最大内存需要的配置
vim /etc/sysctl.conf
vm.max_map_count=262144
最后对配置文件进行刷新：
sysctl -p
启动成功！
通过地址访问9200端口即可
