elasticsearch 5.1.1安装

1. 安装jdk1.8：http://www.javashuo.com/article/p-vhaysmjy-dd.html
2. 下载elasticsearch：https://www.elastic.co/downloads/elasticsearch
3. 建立es用户
   1. adduser  es 建立 es帐户
   2. passwd es  设置密码
4. 安装elasticsearch ：
   1. 切换es  用户  su - es
   2. 解压elasticsearch 压缩包 tar - zxvf elasticsearch-5.1.1
   3. 配置 java_home  修改 elasticsearch 中的 java_home 指定jdk的位置
   4. 配置config 里面的 elasticsearch.yml
   5. ./elasticsearch 启动  ./elasticsearch - d 后台启动
   6. 编写shell 脚原本关闭、启动、重启 es
5. 启动es中 错误解
   1. 警告、不用修改

      1. [2016-12-20T22:37:28,543][INFO ][o.e.b.BootstrapCheck     ] [elk-node1] bound or publishing to a non-loopback or non-link-local address, enforcing bootstrap checks
         [2016-12-20T22:37:28,552][ERROR][o.e.b.Bootstrap          ] [elk-node1] node validation exception
         bootstrap checks failed
         max number of threads [1024] for user [elasticsearch] is too low, increase to at least [2048]
         [2016-12-20T22:37:28,560][INFO ][o.e.n.Node               ] [elk-node1] stopping ...
         [2016-12-20T22:37:28,628][INFO ][o.e.n.Node               ] [elk-node1] stopped
         [2016-12-20T22:37:28,629][INFO ][o.e.n.Node               ] [elk-node1] closing ...
         [2016-12-20T22:37:28,677][INFO ][o.e.n.Node               ] [elk-node1] closed

   2. 错误2

      1. ERROR: bootstrap checks failed
         max file descriptors [4096] for elasticsearch process likely too low, increase to at least [65536]
         max number of threads [1024] for user [lishang] likely too low, increase to at least [2048]

      2. 解决：切换到root用户，编辑limits.conf 添加相似以下内容
         vi /etc/security/limits.conf 
         
         添加以下内容:
         
         * soft nofile 65536
         * hard nofile 131072
         * soft nproc 2048
         * hard nproc 4096

   3. 错误3

      max number of threads [1024] for user [lish] likely too low, increase to at least [2048]

      1. 切换到root用户，进入limits.d目录下修改配置文件。
         vi /etc/security/limits.d/90-nproc.conf 
         修改以下内容：
         
         * soft nproc 1024
         #修改成
         * soft nproc 2048

   4. 错误4

   5. max virtual memory areas vm.max_map_count [65530] likely too low, increase to at least [262144]    

      1. 切换到root用户修改配置sysctl.conf
         
         vi /etc/sysctl.conf 
         添加下面配置：
         vm.max_map_count=655360
         并执行命令：
         sysctl -p
         而后，从新启动elasticsearch，便可启动成功。