[转帖]elasticsearch 8.0 linux安装部署

elasticsearch,linux,安装,部署 · 浏览次数 : 0

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**安装和配置步骤：** 1. 下载并下载安装包： ``` wget -O elasticsearch-8.0.0-linux-x86_64.tar.gz ``` 2. 打开 `/etc/security/limits.conf` 文件并添加以下配置： ``` vm.max_map_count=262144 ``` 3. 打开 `/etc/sysctl.conf` 文件并添加以下配置： ``` vm.max_map_count=262144 ``` 4. 创建用户 `elasticpasswd` 并设置密码。 5. 解压文件： ``` tar -zxvf elasticsearch-8.0.0-linux-x86_64.tar.gz ``` 6. 配置文件 `elasticsearch.yml`： ``` cluster.name: my-applicationnode.name: node-1path.data: /opt/elk/elasticsearch-8.0.0/datapath.logs: /opt/elk/elasticsearch-8.0.0/logs ``` **运行服务：** ``` sudo service elasticsearch start ``` **浏览器访问：** 访问 `http://localhost:9200/`，您将看到类似的信息，表示安装成功： ``` { "name": "node-1", "cluster_name": "my-application", "cluster_uuid": "D7re4bfxTpC", "version": { "number": "8.0.0", "build_flavor": "default", "build_type": "tar", "build_hash": "1b6a7ece17463df5ff54", "build_date": "2022-02-03T16:47:57.507843096Z", "build_snapshot": false, "lucene_version": "9.0.0", "minimum_wire_compatibility_version": "7.17.0", "minimum_index_compatibility_version": "7.0.0" }, "tagline": "You Know, for Search" } ``` **常见错误：** * 无法以 root 运行时启动 Elasticsearch。 * `elasticsearch.yml` 中的 `cluster.name` 要与您的 Elasticsearch 集群名称匹配。 * `elasticsearch-8.0.0-linux-x86_64.tar.gz` 的解压缩文件夹中必须包含 `elasticsearch.yml` 文件。

正文

1. 下载安装包

https://www.elastic.co/cn/downloads/elasticsearch

选择下载linux版本，elasticsearch-8.0.0-linux-x86_64.tar.gz

2. 系统参数修改

limits.conf和sysctl.conf


vim /etc/security/limits.conf
 
elastic soft nofile 65536
elastic hard nofile 65536
elastic soft nproc  65536
elastic hard nproc  65536
 
vim /etc/sysctl.conf
# 添加如下配置
 
vm.max_map_count=262144
 
# 执行生效
sysctl -p

3. 新建用户

添加用户并设置密码。


useradd elastic
passwd elastic

如果解压文件是在切换用户以前进行，则可以在创建用户以后，设置目录权限为新建用户。

chown -R elastic:elastic elasticsearch-8.0.0

切换用户名：

su - elastic

4. 解压文件

tar -zxvf elasticsearch-8.0.0-linux-x86_64.tar.gz

5. 配置文件elasticsearch.yml


cluster.name: my-application
node.name: node-1
path.data: /opt/elk/elasticsearch-8.0.0/data
path.logs: /opt/elk/elasticsearch-8.0.0/logs
 
#开启xpack
xpack.security.enabled:  false
xpack.security.transport.ssl.enabled: false
 
 
#开启集群中https传输
#xpack.security.transport.ssl.enabled: true
#xpack.security.transport.ssl.verification_mode: certificate
#xpack.security.transport.ssl.keystore.path: certs/elastic-certificates.p12
#xpack.security.transport.ssl.truststore.path: certs/elastic-certificates.p12
 
#开启api接口https传输,配置HTTP层TLS/SSL加密传输
#xpack.security.http.ssl.enabled: true
#xpack.security.http.ssl.keystore.path: certs/elastic-certificates.p12
#xpack.security.http.ssl.truststore.path: certs/elastic-certificates.p12
 
#xpack.security.http.ssl.enabled: true
#xpack.security.http.ssl.keystore.path: "certs/http.p12"
 
 
#允许跨域
http.cors.enabled: true
http.cors.allow-origin: "*"
http.cors.allow-headers: Authorization,X-Requested-With,Content-Type,Content-Length

本地测试访问，先不启用https了。

6. 运行服务，浏览器访问

http://localhost:9200/

可以看到类似下面的信息，表示安装成功


{
  "name" : "node-1",
  "cluster_name" : "my-application",
  "cluster_uuid" : "D7re4bfxTpC",
  "version" : {
    "number" : "8.0.0",
    "build_flavor" : "default",
    "build_type" : "tar",
    "build_hash" : "1b6a7ece17463df5ff54",
    "build_date" : "2022-02-03T16:47:57.507843096Z",
    "build_snapshot" : false,
    "lucene_version" : "9.0.0",
    "minimum_wire_compatibility_version" : "7.17.0",
    "minimum_index_compatibility_version" : "7.0.0"
  },
  "tagline" : "You Know, for Search"
}

7. 常见错误，不能以root运行

启动后出现如下提示，表示elasticsearch不能以root运行。


[2022-03-08T14:52:15,181][ERROR][o.e.b.ElasticsearchUncaughtExceptionHandler] [bogon] uncaught exception in thread [main]
org.elasticsearch.bootstrap.StartupException: java.lang.RuntimeException: can not run elasticsearch as root