centos6安装ElasticSearch5.6.5错误记录

在centos6安装ES的时候遇到不少问题。这里记录日志。以后安装一定要升级centos7，别说啥稳定问题了，该升级就升级。

[1]: max file descriptors [4096] for elasticsearch process is too low, increase to at least [65536]
[2]: max number of threads [1024] for user [es] is too low, increase to at least [2048]
[3]: max virtual memory areas vm.max_map_count [65530] is too low, increase to at least [262144]
[4]: system call filters failed to install; check the logs and fix your configuration or disable system call filters at your own risk

解决方案：

vim config/elasticsearch.yml

追加

bootstrap.memory_lock: false
bootstrap.system_call_filter: false

vi /etc/security/limits.conf

追加

* soft nofile 65536

* hard nofile 131072

* soft nproc 2048

* hard nproc 4096

vi /etc/security/limits.d/90-nproc.conf
追加

修改如下内容：

* soft nproc 1024

#修改为

* soft nproc 2048

vi /etc/sysctl.conf
追加

vm.max_map_count=655360

sysctl -p

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