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问题出现环境,OS版本:CentOS-7-x86_64-Minimal-1708;ES版本:elasticsearch-6.2.2。

1、max file descriptors [4096] for elasticsearch process is too low, increase to at least [65536]

  每个进程最大同时打开文件数太小,可通过下面2个命令查看当前数量

ulimit -Hn
ulimit -Sn

  修改/etc/security/limits.conf文件,增加配置,用户退出后重新登录生效

*               soft    nofile          65536
*               hard    nofile          65536

 

2、max number of threads [3818] for user [es] is too low, increase to at least [4096]

  问题同上,最大线程个数太低。修改配置文件/etc/security/limits.conf(和问题1是一个文件),增加配置

*               soft    nproc           4096
*               hard    nproc           4096

  可通过命令查看

ulimit -Hu
ulimit -Su

修改后的文件:

 

 

3、max virtual memory areas vm.max_map_count [65530] is too low, increase to at least [262144]

  修改/etc/sysctl.conf文件,增加配置vm.max_map_count=262144

vi /etc/sysctl.conf
sysctl -p

  执行命令sysctl -p生效

 4、Exception in thread "main" java.nio.file.AccessDeniedException: /usr/local/elasticsearch/elasticsearch-6.2.2-1/config/jvm.options

  elasticsearch用户没有该文件夹的权限,执行命令

chown -R es:es /usr/local/elasticsearch/

 

posted on 2018-02-28 19:35  玄同太子  阅读(...)  评论(...编辑  收藏