新版已经支持免java方式安装, 参考文档 传送门
依赖安装：java
Elasticsearch基于java开发，先要安装java环境，推荐yum命令安装
- 查看java可下载列表（官网推荐使用jdk 1.8.0安装）
yum -y list java*
Elasticsearch requires at least Java 8. Specifically as of this writing, it is recommended that you use the Oracle JDK version 1.8.0_131
- 我们安装-devel版本，时间不同，版本号有区别
yum install -y java-1.8.0-openjdk-devel.x86_64
- 输入
java -version查看是否安装成功 - 默认安装在/usr/lib/jvm目录，通过
echo $JAVA_HOME可以查看 - 将java添加到环境变量
vi /etc/profile，在尾部添加如下配置：
export JAVA_HOME=/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.181-3.b13.el6_10.x86_64
export CLASSPATH=.:$JAVA_HOME/jre/lib/rt.jar:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar
export PATH=$PATH:$JAVA_HOME/bin
- 按Esc按键，然后输入
:wq命令保存文件，输入以下命令使配置生效
source /etc/profile
安装Elasticsearch
- 下载Elasticsearch的rpm安装包（一包解万坑），可以在https://www.elastic.co/cn/downloads/elasticsearch 查看，下载最新的rmp包
wget -c https://artifacts.elastic.co/downloads/elasticsearch/elasticsearch-7.2.0-x86_64.rpm
- 执行安装
rpm -ivh elasticsearch-7.2.0-x86_64.rpm
- 运行，这里不需要切换用户运行，因为elasticsearch的服务命令会完成这一切
sudo systemctl daemon-reload
sudo systemctl start elasticsearch.service
- 查看是否成功
curl -XGET 'http://localhost:9200/'
{
"name" : "localhost.localdomain",
"cluster_name" : "elasticsearch",
"cluster_uuid" : "izX7KuQATc2ghCjDbEYwYg",
"version" : {
"number" : "7.2.0",
"build_flavor" : "default",
"build_type" : "rpm",
"build_hash" : "508c38a",
"build_date" : "2019-06-20T15:54:18.811730Z",
"build_snapshot" : false,
"lucene_version" : "8.0.0",
"minimum_wire_compatibility_version" : "6.8.0",
"minimum_index_compatibility_version" : "6.0.0-beta1"
},
"tagline" : "You Know, for Search"
}
- 设置开机启动
sudo systemctl daemon-reload
sudo systemctl enable elasticsearch.service
- 停止开机启动
sudo systemctl disable elasticsearch.service
