YDOOK-云计算-ubuntu24.04-安装-ElasticSearch-直接服务器安装

YDOOK-Jinwei Lin

平台：腾讯云-轻量应用服务器-ubuntu24.04 LTS

首先更新软件列表：

sudo apt update

安装Java运行时环境（JRE）或开发工具包（JDK）- V17

sudo apt install openjdk-17-jdk -y

添加Elastic官方的GPG密钥到系统以验证下载的软件包

wget -qO – https://artifacts.elastic.co/GPG-KEY-elasticsearch | sudo gpg –dearmor -o /usr/share/keyrings/elastic-keyring.gpg

添加Elastic的APT源

echo "deb [signed-by=/usr/share/keyrings/elastic-keyring.gpg] https://artifacts.elastic.co/packages/8.x/apt stable main" | sudo tee /etc/apt/sources.list.d/elastic-8.x.list

 再次更新软件列表：

sudo apt update

开始安装 Elasticsearch

sudo apt install elasticsearch -y

修改/etc/elasticsearch/elasticsearch.yml文件：

 启动 Elasticsearch 服务，并设置该服务开机自动启动：

sudo systemctl start elasticsearch
sudo systemctl enable elasticsearch

查看 Elasticsearch 当前的状态：

sudo systemctl status elasticsearch

修改 Elasticsearch 运行时候JVM的内存大小：

/etc/elasticsearch# /etc/elasticsearch/jvm.options

修改配置后重新启动 Elasticsearch:

sudo systemctl restart elasticsearch

如果使用下面命令仍然无法测试：  

curl -X GET "localhost:9200/"

应该为服务器中需要通过Elasticsearch的默认用户名与密码进行访问，

因为安装时没有给出，所以通过下面命令，修改Elasticsearch默认密码：

sudo /usr/share/elasticsearch/bin/elasticsearch-reset-password -u elastic -i

上述命令需要在 Elasticsearch 运行的时候进行：

修改密码成功后，使用下面命令测试：

curl -u elastic:<password> -X GET "https://10.1.12.16:9200/_cluster/health?pretty"

输出测试结果：

ubuntu@VM-12-16-ubuntu:/etc/elasticsearch$ curl -k -u elastic:<password> -X GET "https://10.1.12.16:9200/_cluster/health?pretty"
{
"cluster_name" : "elasticsearch",
"status" : "green",
"timed_out" : false,
"number_of_nodes" : 1,
"number_of_data_nodes" : 1,
"active_primary_shards" : 3,
"active_shards" : 3,
"relocating_shards" : 0,
"initializing_shards" : 0,
"unassigned_shards" : 0,
"unassigned_primary_shards" : 0,
"delayed_unassigned_shards" : 0,
"number_of_pending_tasks" : 0,
"number_of_in_flight_fetch" : 0,
"task_max_waiting_in_queue_millis" : 0,
"active_shards_percent_as_number" : 100.0
}