Elasticsearch 安装和配置脚本文档

#!/bin/bash
 
# 安装Elasticsearch
sudo rpm --import https://artifacts.elastic.co/GPG-KEY-elasticsearch
echo '[elasticsearch-7.x]
name=Elasticsearch repository for 7.x packages
baseurl=https://artifacts.elastic.co/packages/7.x/yum
gpgcheck=1
gpgkey=https://artifacts.elastic.co/GPG-KEY-elasticsearch
enabled=1
autorefresh=1
type=rpm-md' | sudo tee /etc/yum.repos.d/elasticsearch.repo
sudo yum install --enablerepo=elasticsearch elasticsearch -y
 
# 配置Elasticsearch
sudo systemctl daemon-reload
sudo systemctl enable elasticsearch.service
 
# 设置内存锁定，只在特定的场景下启用
# echo 'vm.max_map_count=262144' | sudo tee -a /etc/sysctl.conf
# sudo sysctl -p
 
# 启动Elasticsearch服务
sudo systemctl start elasticsearch.service
 
# 检查Elasticsearch服务状态
sudo systemctl status elasticsearch.service

这段脚本首先导入Elasticsearch的GPG密钥，然后创建Elasticsearch的yum仓库配置文件。接着，使用yum安装Elasticsearch。之后，重载系统服务守护进程以识别新的Elasticsearch服务，并将其设置为开机自启。最后，启动Elasticsearch服务并检查其状态。注意，设置内存锁定的步骤被注释掉了，因为这项配置通常只在特定的高内存使用场景下启用。