ELK（一）--Centos7.X安装最新版elasticsearch-7.0.0

下载最新版

wget https://artifacts.elastic.co/downloads/elasticsearch/elasticsearch-7.0.0-linux-x86_64.tar.gz

解压

tar -zxvf elasticsearch-7.0.0-linux-x86_64.tar.gz

移动目录

cd /usr/local/
mkdir elasticsearch
mv /data/elk/elasticsearch-7.0.0 /usr/local/elasticsearch/

修改配置

vim config/elasticsearch.yml

network.host: 0.0.0.0  //设置所有IP都能访问
http.port: 9200  //设置端口
#增加该配置，允许跨域
http.cors.enabled: true
http.cors.allow-origin: "*"
#不配置会出现 the default discovery settings are unsuitable for production use; at least one of [discovery.seed_hosts, discovery.seed_providers, cluster.initial_master_nodes] must be configured
cluster.initial_master_nodes: ["node-1"]

创建用户es，并赋权

useradd es
passwd es
chown -R es:es /usr/local/elasticsearch/elasticsearch-7.0.0/

切换用户，并启动elasticsearch

su es
cd /usr/local/elasticsearch/elasticsearch-7.0.0/
 ./bin/elasticsearch //前台启动
 ./bin/elasticsearch -d //后台启动

会出现以下错误

错误：

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

解决方法：

echo "vm.max_map_count=262144" > /etc/sysctl.conf
sysctl -p

错误：

the default discovery settings are unsuitable for production use; at least one of [discovery.seed_hosts, discovery.seed_providers, cluster.initial_master_nodes] must be configured

解决方法：

在上面配置文件的配置中已经说了，需要修改配置文件设置cluster.initial_master_nodes: ["node-1"]

访问IP:9200,出现下面内容启动成功

{
  "name" : "clark-app2",
  "cluster_name" : "elasticsearch",
  "cluster_uuid" : "ASWWjZi3RzqbMqXgZf9yEw",
  "version" : {
    "number" : "7.0.0",
    "build_flavor" : "default",
    "build_type" : "tar",
    "build_hash" : "b7e28a7",
    "build_date" : "2019-04-05T22:55:32.697037Z",
    "build_snapshot" : false,
    "lucene_version" : "8.0.0",
    "minimum_wire_compatibility_version" : "6.7.0",
    "minimum_index_compatibility_version" : "6.0.0-beta1"
  },
  "tagline" : "You Know, for Search"
}