云主机debian安装elasticsearch8笔记

最新推荐文章于 2025-03-04 00:04:44 发布

wencan579

最新推荐文章于 2025-03-04 00:04:44 发布

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文章标签：腾讯云云计算

本文链接：https://blog.youkuaiyun.com/wencan579/article/details/130071799

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本文记录了一台腾讯云2c2g服务器上安装Elasticsearch的过程，包括安装Java8、添加Elasticsearch的GPG密钥和APT源，调整内存配置防止OOM，禁用xpack.security.enabled以进行本地测试，并通过curl检查服务状态。

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在腾讯云订了2c2g的云服务器，最近想学习一下elasticsearch，以下是安装笔记

1、确保已经安装了java8+

2、下载sign key

wget -qO - https://artifacts.elastic.co/GPG-KEY-elasticsearch | sudo apt-key add -

3、安装apt-transport-https

apt-get install apt-transport-https

4、保存apt源

echo “deb https://artifacts.elastic.co/packages/8.x/apt stable main” | sudo tee /etc/apt/sources.list.d/elastic-8.x.list

5、更新并安装elastiscsearch

apt-get update && apt-get install elasticsearch

6、修改配置

elasticsearch默认8g内存，我的服务器配置非常低，所以要修改内存配置，修改es安装目录下的jvm.options，限制内存使用为500m，不要会被OOM killer干掉

################################################################
## IMPORTANT: JVM heap size
################################################################
##
## The heap size is automatically configured by Elasticsearch
## based on the available memory in your system and the roles
## each node is configured to fulfill. If specifying heap is
## required, it should be done through a file in jvm.options.d,
## which should be named with .options suffix, and the min and
## max should be set to the same value. For example, to set the
## heap to 4 GB, create a new file in the jvm.options.d
## directory containing these lines:
##
-Xms500m
-Xmx500m

7、启动

systemctl start elasticsearch

8、查看es运行状态

systemctl status elasticsearch

9、测试

curl -X GET "localhost:9200"

curl: (3) URL using bad/illegal format or missing URL

发现响应的数据不对，应该是端口限制了或者防火墙的问题。

修改配置：elasticsearch.yml，把xpack.security.enabled的值改为false：

再次测试：

root@VM-12-8-debian:/etc/elasticsearch# curl -X GET "localhost:9200"
{
  "name" : "VM-12-8-debian",
  "cluster_name" : "elasticsearch",
  "cluster_uuid" : "ExJ9j_u-S4upDCkkWLDvpQ",
  "version" : {
    "number" : "8.7.0",
    "build_flavor" : "default",
    "build_type" : "deb",
    "build_hash" : "09520b59b6bc1057340b55750186466ea715e30e",
    "build_date" : "2023-03-27T16:31:09.816451435Z",
    "build_snapshot" : false,
    "lucene_version" : "9.5.0",
    "minimum_wire_compatibility_version" : "7.17.0",
    "minimum_index_compatibility_version" : "7.0.0"
  },
  "tagline" : "You Know, for Search"
}