centos6.0安装ELK5.2（elasticsearch安装）
实验环境：CentOS6.8版本安装ELK5.2，5.0开始之后的版本多了很多环境的校验，比如jdk,max-files等等。此次实验我所使用的安装包全都是rpm包。实验开始前先修改一些内核参数防止后期报错:#vim /etc/security/limits.conf
* soft nofile 65536
* hard nofile 65536 #vim /etc/sysctl.conf
vm.max_map_count=655360 #sysctl -p
不要忘了使配置立即生效
#cat /etc/redhat-release
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#rpm -ivh jdk-8u121-linux-x64.rpm
#java -version
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#rpm -ivh elasticsearch-5.2.2.rpm
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#vim /etc/elasticsearch/elasticsearch.yml
默认配置全都是被注释掉的，直接添加就可以，最后两句是必须有的，否则报错起不来服务的，因为Centos6不支持SecComp
cluster.name: es-50-test
node.name: es-node-1
network.host: 0.0.0.0
http.port: 9200
http.cors.enabled: true
http.cors.allow-origin: "*"
bootstrap.memory_lock: false
bootstrap.system_call_filter: false bound or publishing to a non-loopback or non-link-local address, enforcing bootstrap checks
node validation exception
bootstrap checks failed
max number of threads for user is too low, increase to at least 如果报以上错误的话在/etc/security/limits.d/90-nproc.conf修改如下内容
* soft nproc 1024
改为
* soft nproc 2048 修改之后再次重启elasticsearch服务就能9200端口了http://IP:9200/
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