[--16T18::,][INFO ][o.e.b.BootstrapChecks ] [node-] bound or publishing to a non-loopback address, enforcing bootstrap checks [--16T18::,][ERROR][o.e.b.Bootstrap ] [node-] node validation exception [] bootstrap checks failed []: max number of threads [] ]
[--17T19::,][ERROR][o.e.b.Bootstrap ] [node-] node validation exception [] bootstrap checks failed []: max ] ]
最大进程数为1024是太少了，最少要增加到4096，但是生产中建议调大些，我们生产中使用的值是655350
解决方法：
vim /etc/security/limits.conf #增加如下四行 elasticsearch soft nproc elasticsearch hard nproc elasticsearch soft nofile elasticsearch hard nofile
退出终端，重新进入，重启ES