Elasticsearch7.15.2 出现 node validation exception 的问题处理

3个异常如下：

  [1]: max file descriptors [65535] for elasticsearch process is too low, increase to at least [65536][2]: memory locking requested for elasticsearch process but memory is not locked[3]: max virtual memory areas vm.max_map_count [65530] is too low, increase to at least [262144]

[1]: max file descriptors [65535] for elasticsearch process is too low, increase to at least [65536]
切换到root用户，编辑limits.conf 添加类似如下内容 vim /etc/security/limits.conf 添加如下内容:*               soft    nofile          262144*               hard    nofile          262144

在这里插入图片描述

wenti2我没遇到

[2]: memory locking requested for elasticsearch process but memory is not locked
原因：锁定内存失败解决方案：
切换到root用户，编辑limits.conf配置文件， 添加类似如下内容：sudo vim /etc/security/limits.conf添加如下内容:* soft memlock unlimited
* hard memlock unlimited备注：* 代表Linux所有用户名称保存、退出、重新登录才可生效

问题3

[3]: max virtual memory areas vm.max_map_count [65530] is too low, increase to at least [262144]
原因：最大虚拟内存太小
解决方案：切换到root用户下，修改配置文件sysctl.confsudo vim /etc/sysctl.conf添加下面配置：vm.max_map_count=655360并执行命令：sysctl -p