elasticsearch 常见问题

安装

https://www.linuxprobe.com/elasticsearch-install-tutorial.html

 

• 外网访问

解决办法：vim config/elasticsearch.yml
增加：network.host: 0.0.0.0

 

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

修改/etc/security/limits.conf

* soft nofile 65536
* hard nofile 65536

 

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

* soft nproc 4096
* hard nproc 4096

查看是否生效
ulimit -Hn
ulimit -Sn
ulimit -Hu
ulimit -Su

 

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

vi /etc/sysctl.conf
vm.max_map_count=262144

执行生效
sysctl -p

 

• elasticsearch用户没有该文件夹的权限

chown -R 用户 路径

 

参考：
https://www.cnblogs.com/zhi-leaf/p/8484337.html