[1]: max file descriptors [4096] for elasticsearch process is too low, increase to at least [65536]
切換到root用戶，編輯limits.conf添加如下內(nèi)容
vi /etc/security/limits.conf
* soft nofile 65536
* hard nofile 65536
[2]: max number of threads [3818] for user [es] is too low, increase to at least [4096]
最大線程個(gè)數(shù)太低。修改配置文件etc/security/limits.conf，增加配置
* soft nproc 4096
* hard nproc 4096
[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
執(zhí)行命令sysctl -p生效
[4]: system call filters failed to install; check the logs and fix your configuration or disable system call filters at your own risk
問題原因：因?yàn)镃entos6不支持SecComp，而ES5.2.1默認(rèn)bootstrap.system_call_filter為true進(jìn)行檢測，所以導(dǎo)致檢測失敗，失敗后直接導(dǎo)致ES不能啟動(dòng)
解決方法：在elasticsearch.yml中配置bootstrap.system_call_filter為false，注意要在Memory下面:
bootstrap.memory_lock: false
bootstrap.system_call_filter: false
