elasticsearch7.x安装异常 ERROR: [2] bootstrap checks failed. You must address the points described in th

ERROR: [2] bootstrap checks failed. You must address the points described in the following [2] lines before starting Elasticsearch.
bootstrap check failure [1] of [2]: max file descriptors [4096] for elasticsearch process is too low, increase to at least [65535]
bootstrap check failure [2] of [2]: max virtual memory areas vm.max_map_count [65530] is too low, increase to at least [262144]

主要是文件权限与内存大小问题：

elasticsearch用户拥有的可创建文件描述的权限太低，至少需要65536,

处理办法: #切换到root用户修改

vim /etc/security/limits.conf # 在最后面追加下面内容

elk hard nofile 65536

elk soft nofile 65536 #*** 是启动elk的用户

max_map_count文件包含限制一个进程可以拥有的VMA(虚拟内存区域)的数量

处理办法: #切换到root用户修改

vim /etc/sysctl.conf # 在最后面追加下面内容

vm.max_map_count=655360

执行 sysctl -p

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