錯誤描述:Linux默認配置的參數過小,需要自己設置
max file descriptors [4096] for elasticsearch process is too low, increase to at least [65536]
max number of threads [1024] for user [hadoop] is too low, increase to at least [2048]
max virtual memory areas vm.max_map_count [65530] is too low, increase to at least [262144]
解決方案：
max file descriptors [4096] for elasticsearch process is too low, increase to at least [65536]
切換到root用戶
ulimit -Hn 查看硬限制
vim /etc/security/limits.conf
添加下面設置 hadoop是用戶
也可以是設置 * soft nofile 65536
es soft nofile 65536 es hard nofile 65536
退出用戶重新登錄，使配置生效
重新 ulimit -Hn 查看硬限制 會發現數值有4096改成65535
vi /etc/sysctl.conf
添加下面配置：
vm.max_map_count=655360
並執行命令：
sysctl -p
然後 su es
啓動es發現可以啓動成功