CentOS6.7安装elasticsearch5.4 以及kibana-优快云博客

本文链接：https://blog.youkuaiyun.com/vincent_duan/article/details/100880087

本文解决Elasticsearch在Linux环境下使用root用户启动失败的问题，通过创建专用用户和调整系统配置来确保服务正常运行。同时，指导如何安装和配置Kibana，实现与Elasticsearch的连接。

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1.安装jdk1.8

2.问题1：org.elasticsearch.bootstrap.StartupException: java.lang.RuntimeException: can not run elasticsearch as root

解决方案：

因为安全问题elasticsearch 不让用root用户直接运行，所以要创建新用户
建议创建一个单独的用户用来运行ElasticSearch
创建elsearch用户组及elsearch用户
groupadd elsearch
useradd elsearch -g elsearch -p elasticsearch

chown -R elsearch:elsearch ./elasticsearch-5.4.1 用户目录权限

3.问题2：

ERROR: [1] bootstrap checks failed
[1]: system call filters failed to install; check the logs and fix your configuration or disable system call filters at your own risk

vim config/elasticsearch.yml 添加如下：
bootstrap.system_call_filter: false

4.问题3：

ERROR: bootstrap checks failed
max file descriptors [10240] for elasticsearch process likely too low, increase to at least [65536]
max number of threads [1024] for user [elsearch] likely too low, increase to at least [2048]
max virtual memory areas vm.max_map_count [65530] likely too low, increase to at least [262144]
[2016-11-14T10:22:17,569][INFO ][o.e.n.Node               ] [mysteel-node1] stopping ...
[2016-11-14T10:22:17,615][INFO ][o.e.n.Node               ] [mysteel-node1] stopped
[2016-11-14T10:22:17,615][INFO ][o.e.n.Node               ] [mysteel-node1] closing ...
[2016-11-14T10:22:17,638][INFO ][o.e.n.Node               ] [mysteel-node1] closed

切换到root用户

vi /etc/security/limits.conf

添加如下内容:

* soft nofile 65536
* hard nofile 131072
* soft nproc 2048
* hard nproc 4096

vi /etc/security/limits.d/90-nproc.conf
修改如下内容：
* soft nproc 1024
#修改为
* soft nproc 2048

vi /etc/sysctl.conf
添加下面配置：
vm.max_map_count=655360
并执行命令：
sysctl -p
重新登录elsearch
然后，重新启动elasticsearch，即可启动成功。

安装kibana：

解压之后修改配置文件：./config/kibana.yml

server.host: "192.168.152.39"
elasticsearch.url: "http://192.168.152.39:9200"