ERROR: [2] bootstrap checks failed
[1]: max file descriptors [4096] for elasticsearch process is too low, increase to at least [65536]
[2]: max virtual memory areas vm.max_map_count [65530] is too low, increase to at least [262144]
启动报这个错误；
问题1 [1]: max file descriptors [4096] for elasticsearch process is too low, increase to at least [65536]
修改/etc/security/limits.conf文件，添加或修改如下行： （请切换到root用户 然后强制修改文件）
* hard nofile 65536
* soft nofile 65536
问题2 [2]: max virtual memory areas vm.max_map_count [65530] is too low, increase to at least [262144]
$ sudo sysctl -w vm.max_map_count=2621441
或者修改 /etc/sysctl.conf 文件，添加 “vm.max_map_count”设置 永久改变(sudo sysctl -p /etc/sysctl.conf生效)。
设置后，可以使用