1、max file descriptors [4096] for elasticsearch process is too low, increase to at least [65535] 编辑 /etc/security/limits.conf，追加以下内容；
- soft nofile 65536
- hard nofile 65536 此文件修改后需要重新登录用户，才会生效
登录后使用ulimit -S -n/ulimit -H -n查看 2、Native controller process has stopped - no new native processes can be started
3、No handler for type [string] declared on field[XXX]的解决办法
