Centos7下安装Elasticsearch6记录

目的

• 本文安装一个无权限Elasticsearch 6来作为测试环境试用。
• 开放跨域
• 解决centos7里的坑
• 下次安装自己也可以参考

创建用户(Elasticsearch 不能使用root运行)

groupadd elsearch
useradd elsearch -g elsearch -p /opt/elasticsearch-6.2.4

安装依赖的JDK环境

cd /opt/
wget --no-cookies --no-check-certificate --header "Cookie: gpw_e24=http%3A%2F%2Fwww.oracle.com%2F; oraclelicense=accept-securebackup-cookie" "http://download.oracle.com/otn-pub/java/jdk/8u141-b15/336fa29ff2bb4ef291e347e091f7f4a7/jdk-8u141-linux-x64.tar.gz"

tar xzf jdk-8u141-linux-x64.tar.gz

加入环境变量 vi /home/elsearch/.bash_profile

su elsearch
PATH=$PATH:$HOME/bin

JAVA_HOME=/opt/jdk1.8.0_141
JAVA_JRE=$JAVA_HOME/jre
CLASS_PATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar:$JRE_HOME/lib
PATH=$PATH:$JAVA_HOME/bin:$JRE_HOME/bin
export JAVA_HOME JRE_HOME CLASS_PATH PATH

source .bash_profile

验证是否安装成功.

java -version
java version "1.8.0_141"
Java(TM) SE Runtime Environment (build 1.8.0_141-b15)
Java HotSpot(TM) 64-Bit Server VM (build 25.141-b15, mixed mode)

开始

然后开始安elasticsearch，直接官网即可 https://www.elastic.co/downloads/elasticsearch,下面是我的操作记录。

su root
wget https://artifacts.elastic.co/downloads/elasticsearch/elasticsearch-6.2.4.tar.gz
tar -xzvf elasticsearch-6.2.4.tar.gz
chown -R elsearch:elsearch  /opt/elasticsearch-6.2.4

su research

/opt/elasticsearch-6.2.4/bin/elasticsearch -d

• curl http://localhost:9200/

[elsearch@elastic opt]$ curl http://localhost:9200/
{
  "name" : "-H4VT3I",
  "cluster_name" : "elasticsearch",
  "cluster_uuid" : "DzQVWzsiTny5stBwCJtJYw",
  "version" : {
    "number" : "6.2.4",
    "build_hash" : "ccec39f",
    "build_date" : "2018-04-12T20:37:28.497551Z",
    "build_snapshot" : false,
    "lucene_version" : "7.2.1",
    "minimum_wire_compatibility_version" : "5.6.0",
    "minimum_index_compatibility_version" : "5.0.0"
  },
  "tagline" : "You Know, for Search"
}

• 安装完成

开放外网及跨域

#防火墙
su root
iptables -I INPUT -p tcp --dport 9200 -j ACCEPT
iptables -I INPUT -p tcp --dport 9300 -j ACCEPT
# 其他云主机记得开放，安全组端口

#跨域
vi /opt/elasticsearch-6.2.4/config/elasticsearch.yml
network.host: 0.0.0.0
http.cors.enabled: true
http.cors.allow-origin: /.*/
#重启
ps -ef | grep elasticsearch
kill -9 11340

/opt/elasticsearch-6.2.4/bin/elasticsearch -d

ERROR: [2] bootstrap checks failed
[1]: max file descriptors [65535] for elasticsearch process is too low, increase to at least [65536]
[2]: max virtual memory areas vm.max_map_count [65530] is too low, increase to at least [262144]

su root
vi /etc/sysctl.conf
vm.max_map_count=262144
sysctl -p

vi /etc/security/limits.conf
* soft nofile 65536
* hard nofile 65536

/opt/elasticsearch-6.2.4/bin/elasticsearch -d

• 完成开放

参考

• https://www.elastic.co/downloads/elasticsearch
• https://tecadmin.net/install-java-8-on-centos-rhel-and-fedora/
• https://blog.csdn.net/showhilllee/article/details/53404042