Elasticsearch安装（Linux版）

╰+攻爆jí腚メ 2022-09-11 11:10 189阅读 0赞

一、下载&安装

1、在linux上建立一个目录,用来保存`elasticsearch安装包`

`   mkdir /usr/local/tools/elasticsearch`

`2、进入/usr/local/tools/elasticsearch目录，下载安装包`

wget https://artifacts.elastic.co/downloads/elasticsearch/elasticsearch-7.14.1-linux-x86\_64.tar.gz![icon-default.png_t_L892][]

3、tar -zxvf elasticsearch-7.14.1

二、配置文件讲解

jvm.options         虚拟机参数配置文件

配置heap内存一样

elasticsearch.yml   主配置文件

cluster.name  集群名称，同一个网段自动加入

node.name        节点名称

http.port     http端口

默认情况下，Elastic 只允许本机访问，如果需要远程访问，可以修改 Elastic 安装目录的config/elasticsearch.yml文件，去掉network.host的注释，将它的值改成0.0.0.0，然后重新启动 Elastic。

三、启动

注意：root用户无法启动Elasticsearch

add一个es用户：

useradd es

passwd es

再输入两次密码(自定义)  
　　为用户赋权限

chown -R es:es /usr/local/tools/elasticsearch

然后使用es用户启动  ：su es

cd  /usr/local/tools/elasticsearch-7.14.1/bin

启动es命令：./elasticsearch -d

输入：curl http://localhost:9200

如果展示；

\{  
  "name" : "localhost.localdomain",  
  "cluster\_name" : "elasticsearch",  
  "cluster\_uuid" : "h83jwfs8Rkyn8xYejbeXzQ",  
  "version" : \{  
    "number" : "7.14.1",  
    "build\_flavor" : "default",  
    "build\_type" : "tar",  
    "build\_hash" : "66b55ebfa59c92c15db3f69a335d500018b3331e",  
    "build\_date" : "2021-08-26T09:01:05.390870785Z",  
    "build\_snapshot" : false,  
    "lucene\_version" : "8.9.0",  
    "minimum\_wire\_compatibility\_version" : "6.8.0",  
    "minimum\_index\_compatibility\_version" : "6.0.0-beta1"  
  \},  
  "tagline" : "You Know, for Search"  
\}

则证明启动成功。

四、外网访问`elasticsearch`

`上面只能用localhost访问，下面配置elasticsearch，令外网也能访问。`

需要修改elasticsearch.yml

network.host: 0.0.0.0

然后再启动，可能会有下面一些报错，根据实际报错情况处理即可

\[1\]: max file descriptors \[4096\] for elasticsearch process is too low, increase to at least \[65536\]

#切换到root用户修改
    vim /etc/security/limits.conf
    
    # 在最后面追加下面内容
    es hard nofile 65536
    es soft nofile 65536
    
    
    # 注意es 是用户

\[2\]: max number of threads \[1024\] for user \[elk\] is too low, increase to at least \[4096\]

#切换到root用户修改
    进入limits.d下的配置文件：vim /etc/security/limits.d/20-nproc.conf ，修改配置如下：
    
    
    *          soft    nproc      4096
    root       soft    nproc     unlimited 
    
    
    #我这里是20-nproc.conf，不同系统文件名不同，请进入/etc/security/limits.d目录下查看

\[3\]: max virtual memory areas vm.max\_map\_count \[65530\] is too low, increase to at least \[262144\]

#切换到root用户修改
    修改sysctl文件：vim /etc/sysctl.conf ，增加下面配置项
    
    
        增加改行配置：vm.max_map_count=655360  
        保存退出后，执行：  
        sysctl -p

\[4\]: system call filters failed to install; check the logs and fix your configuration or disable system call filters at your own risk

# 在elasticsearch.yml中加入下面命令即可
    
    bootstrap.system_call_filter: false

\[5\]:

ERROR: [1] bootstrap checks failed
    [1]: 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

解决方法如下:

# 修改elasticsearch.yml
    
    node.name: node-1
    cluster.initial_master_nodes: ["node-1"]

把错误一一改正后，启动es。

外网访问：http://\*\*\*\*:9200

展示：

{
      "name" : "node-1",
      "cluster_name" : "elasticsearch",
      "cluster_uuid" : "h83jwfs8Rkyn8xYejbeXzQ",
      "version" : {
        "number" : "7.14.1",
        "build_flavor" : "default",
        "build_type" : "tar",
        "build_hash" : "66b55ebfa59c92c15db3f69a335d500018b3331e",
        "build_date" : "2021-08-26T09:01:05.390870785Z",
        "build_snapshot" : false,
        "lucene_version" : "8.9.0",
        "minimum_wire_compatibility_version" : "6.8.0",
        "minimum_index_compatibility_version" : "6.0.0-beta1"
      },
      "tagline" : "You Know, for Search"
    }

[icon-default.png_t_L892]: /images/20220828/e0cce6667acc4472aab23d51d0374552.png