ELK 安装Elasticsearch

章节

ELK栈要安装以下开源组件：

Elasticsearch
Kibana
Beats
Logstash (可选)

Logstash是可选的。

安装Elasticsearch

Elasticsearch是一个近实时的全文搜索引擎，它有多种用途，例如作为日志系统。

要下载安装Elasticsearch，打开命令行终端，执行以下命令(deb用于Debian/Ubuntu, rpm用于Redhat/Centos/Fedora, mac用于OS X, linux用于linux, win用于Windows):

deb:

curl -L -O https://artifacts.elastic.co/downloads/elasticsearch/elasticsearch-7.1.0-amd64.deb
sudo dpkg -i elasticsearch-7.1.0-amd64.deb
sudo /etc/init.d/elasticsearch start

rpm:

curl -L -O https://artifacts.elastic.co/downloads/elasticsearch/elasticsearch-7.1.0-x86_64.rpm
sudo rpm -i elasticsearch-7.1.0-x86_64.rpm
sudo service elasticsearch start

mac:

curl -L -O https://artifacts.elastic.co/downloads/elasticsearch/elasticsearch-7.1.0-darwin-x86_64.tar.gz
tar -xzvf elasticsearch-7.1.0-darwin-x86_64.tar.gz
cd elasticsearch-7.1.0
./bin/elasticsearch

linux:

curl -L -O https://artifacts.elastic.co/downloads/elasticsearch/elasticsearch-7.1.0-linux-x86_64.tar.gz
tar -xzvf elasticsearch-7.1.0-linux-x86_64.tar.gz
cd elasticsearch-7.1.0
./bin/elasticsearch

win:

从Elasticsearch下载页面下载Elasticsearch 7.1.0 Windows zip文件。
将zip文件的内容解压到一个目录，例如：C:Program Files。
以管理员身份打开命令行窗口，切换到解压目录，例如:
```
cd C:Program Fileselasticsearch-7.1.0
```
开始Elasticsearch:
```
binelasticsearch.bat
```

确认Elasticsearch启动

要确认Elasticsearch服务是否启动，可以访问端口9200。

curl http://127.0.0.1:9200

在Windows上，如果没有安装cURL，可以用浏览器打开上面的网址。

如果一切正常，可以看到如下响应:

{
  "name" : "qikegu",
  "cluster_name" : "elasticsearch",
  "cluster_uuid" : "qZk2EjpQRDiYYyhccomWyw",
  "version" : {
    "number" : "7.1.0",
    "build_flavor" : "default",
    "build_type" : "rpm",
    "build_hash" : "606a173",
    "build_date" : "2019-05-16T00:43:15.323135Z",
    "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"
}