Linux CentOS7 单机部署elasticsearch-7.2.0

• 安装规划

• 软件安装包下载

  #elasticsearch安装
  wget -p /soft/es/elasticsearch https://artifacts.elastic.co/downloads/elasticsearch/elasticsearch-7.2.0-linux-x86_64.tar.gz
  #kibana 下载
  wget -p /soft/es/elasticsearch https://artifacts.elastic.co/downloads/kibana/kibana-7.2.0-linux-x86_64.tar.gz
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• 安装环境准备

  设置一些elasticsearch启动需要的一些额外操作系统设置

  ​ 1.修改所有用户最大可创建的文件数目，如果不设置，启动会报max file descriptors [4096] for elasticsearch process is too low, increase to at least [65535]错误

  echo "* soft nofile 65536" >> /etc/security/limits.conf  
  echo "* hard nofile 65536" >> /etc/security/limits.conf      
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  ​ 2.修改最大虚拟内存,如果不设置，启动会报max virtual memory areas vm.max_map_count [65530] is too low, increase to at least [262144]

  echo "vm.max_map_count=262144" >> /etc/sysctl.conf sysctl -w vm.max_map_count=262144       
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  ​ 可以使用以下命令查看是否生效:

  sysctl -a | grep vm.max_map_count       
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  ​ 3.设置用户最大线程数，如果不设置，启动会报max number of threads [3795] for user [esuser] is too low, increase to at least [4096]

  echo "* soft nproc 4096" >> /etc/security/limits.conf  
  echo "* hard nproc 4096" >> /etc/security/limits.conf      
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  4. jdk环境，建议为1.8，具体安装省略

  5. 添加运行elasticsearch的用户(es必须使用非root用户启动)

     groupadd elsearch
     useradd elsearch -g elsearch -p 123456
     chown -R elsearch:elsearch /opt/es
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elasticsearch安装

1. 下载载安装包elasticsearch-7.2.0-linux-x86_64.tar.gz解压文件

   tar -zxvf elasticsearch-7.2.0-linux-x86_64.tar.gz
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2. 查看所修改的配置文件

   [elsearch@hejt-29 es]$ grep -v "^#" elasticsearch-7.2.0/config/elasticsearch.yml | more
    cluster.name: es-demo
    node.name: node-1
    node.master: true
    node.data: true
    http.cors.enabled: true
    http.cors.allow-origin: "*"
    http.port: 9200
    transport.tcp.port: 9300
    path.data: /soft/es/to/data
    path.logs: /soft/es/to/logs
    bootstrap.memory_lock: true
    network.host: 0.0.0.0
    discovery.seed_hosts: ["127.0.0.1"]
    cluster.initial_master_nodes: ["node-1"]
   [elsearch@hejt-29 es]$
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3. es内存调整配置文件(建议配置为物理内存的一半或者更多最好不要超过32G，超过了也可能不会增强性能)：

   /soft/es/elasticsearch-7.2.0/config/jvm.options
   sed -i 's/-Xms2g/-Xms32g/' /soft/es/elasticsearch-7.2.0/config/jvm.options
   sed -i 's/-Xmx2g/-Xmx32g/' /soft/es/elasticsearch-7.2.0/config/jvm.options
   echo "-Xss256k" >>/opt/elasticsearch/elasticsearch-5.2.0/config/jvm.options
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4. 启动

   /soft/es/elasticsearch-7.2.0/bin/elasticsearch -d
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5. 验证

[elsearch@hejt-29 es]$ curl -i -XGET '192.168.66.151:9200/'
HTTP/1.1 200 OK
content-type: application/json; charset=UTF-8
content-length: 502

{
  "name" : "node-1",
  "cluster_name" : "es-demo",
  "cluster_uuid" : "-6Eg9-Y_R52KELnET06Asg",
  "version" : {
    "number" : "7.2.0",
    "build_flavor" : "default",
    "build_type" : "tar",
    "build_hash" : "508c38a",
    "build_date" : "2019-06-20T15:54:18.811730Z",
    "build_snapshot" : false,
    "lucene_version" : "8.0.0",
    "minimum_wire_compatibility_version" : "6.8.0",
    "minimum_index_compatibility_version" : "6.0.0-beta1"
  },
  "tagline" : "You Know, for Search"
}
[elsearch@hejt-29 es]$ 
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kibana 安装

1. 解压

   tar  -zxvf  kibana-7.2.0-linux-x86_64.tar.gz   
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2. 修改配置文件

   #查看kibana配置文件去掉空行和注释行，如下主要配置内容
   [elsearch@hejt-29 es]$ grep -v "^#" ./kibana-7.2.0-linux-x86_64/config/kibana.yml| grep -v "^$" | more
   server.port: 5601
   server.host: "192.168.66.151"
   server.name: "kibana-audit-asiainfo"
   elasticsearch.hosts: ["http://192.168.66.151:9200"]
   i18n.locale: "zn-CN"
   [elsearch@hejt-29 es]$
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3. 启动

   ./kibana-7.2.0-linux-x86_64/bin/kibana
   #或者后台启动
   nohup /soft/es/kibana-7.2.0-linux-x86_64/bin/kibana > /dev/null 2>&1 &
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4. 验证

netstat -tunlp|grep 5601
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