Ubuntu 安装 Elasticsearch
1.安装java
注意:最新版本的elasticsearch(5.6.2)要求安装java8
1、sudo apt-add-repository ppa:webupd8team/java
2、sudo apt-get update
3、sudo apt-get install oracle-java8-installer
注意:如果之前有安装老版本的java或者opensdk的,在安装之后,最好重新设置以下环境变量:export JAVA_HOME=/usr/lib/jvm/java-8-oracle 和 export CLASSPATH=/usr/share/java,最后source /etc/profile使变量生效。
2. 下载elasticsearch
zip安装:
wget https://artifacts.elastic.co/downloads/elasticsearch/elasticsearch-5.6.2.zip
wget https://artifacts.elastic.co/downloads/elasticsearch/elasticsearch-5.6.2.zip.sha512
shasum -a 512 -c elasticsearch-5.6.2.zip.sha512
unzip elasticsearch-5.6.2.zip
cd elasticsearch-5.6.2/
rpm安装:
wget https://artifacts.elastic.co/downloads/elasticsearch/elasticsearch-6.5.4.rpm
wget https://artifacts.elastic.co/downloads/elasticsearch/elasticsearch-6.5.4.rpm.sha512
shasum -a 512 -c elasticsearch-6.5.4.rpm.sha512
sudo rpm --install elasticsearch-6.5.4.rpm
注意:需要为elasticsearch分配一个新的用户(因为不允许以root账号启动)
groupadd elsearch
useradd elsearch -g elsearch -p elasticsearch
创建新用户后,将解压后的elasticsearch的拥有者更换为elsearch:chown -R elsearch:elsearch elasticsearch
3. 运行elasticsearch
切换到elsearch用户,切换到elasticsearch目录,使用命令启动:./bin/elasticsearch
另开一个终端,使用curl访问如下地址即可验证是否成功安装:curl 'http://localhost:9200?pretty'
技巧1:变更配置内存
新版的elasticsearch配置内存要使用如下指令:ES_JAVA_OPTS="-Xms30g –Xmx30g" ./bin/elasticsearch