[TOC]
报错内容：
报错一：[1]: max file descriptors [4096] for elasticsearch process is too low, increase to at least [65536]
- 解决办法：在/etc/security/limits.conf 中添加如下几行：
# config for elasticsearch
elasticsearch - nofile 65536
elasticsearch - nproc 65536
报错二：[2]: max virtual memory areas vm.max_map_count [65530] is too low, increase to at least [262144]
报错原因：分配给es的内存太小，小于es需要的最小值
解决办法：在/etc/sysctl.conf中添加如下几行：
vm.zone_reclaim_mode=0
vm.max_map_count = 262144
vm.swappiness = 1
