祝您身体健康，前程似锦，小弟期待文章对您有帮助，也期待您的打赏:
目录
一、安装JDK(root用户权限下)
二、安装Elasticsearch(root用户权限下)
三、配置
四、 启动Elasticsearch
五、访问elasticsearch的状态
六. 安装elasticsearch-head插件
七. 启动
一、安装JDK(root用户权限下)
yum install -y java
java -version
二、安装Elasticsearch(root用户权限下)
1.下载并安装GPG key
rpm --import https://artifacts.elastic.co/GPG-KEY-elasticsearch
2.添加yum仓库
vim /etc/yum.repos.d/es.repo
[elasticsearch-6.x] name=Elasticsearch repository for 6.x packages baseurl=https://artifacts.elastic.co/packages/6.x/yum gpgcheck=1 gpgkey=https://artifacts.elastic.co/GPG-KEY-elasticsearch enabled=1 autorefresh=1 type=rpm-md
3.安装elasticsearch
yum install -y elasticsearch
三、配置
1. （root用户下）配置外网访问IP
vim /etc/elasticsearch/elasticsearch.yml
2. （root用户下）修改limits.conf
vi /etc/security/limits.conf #添加如下内容: * soft nofile 65536 * hard nofile 131072 * soft nproc 4096 * hard nproc 4096
3 . （root用户下）修改/etc/sysctl.conf
#添加下面配置： vm.max_map_count=655360
4.（root用户下） 执行命令
sysctl -p
四、 启动Elasticsearch
1、（root用户下）创建用户：elasticsearch
adduser elasticsearch(自动安装的时候可能创建有了)
2、（root用户下）创建用户密码，需要输入两次
passwd elasticsearch （测试就1eGhXZ0n78WoqSw6） //修改强一点的密码，免得遭受攻击
3、（root用户下）将对应的文件夹权限赋给该用户
find / -name elasticsearch
发现安装在: /usr/share/elasticsearch/
chown -R elasticsearch /usr/share/elasticsearch/
4. （root用户下）防止切换到elasticsearch，报"This account is currently not available"
usermod -s /bin/bash elasticsearch
5. （root用户下）切换到elasticsearch用户下
su elasticsearch
6. （elasticsearch用户下）启动elasticsearch
/usr/share/elasticsearch/bin/elasticsearch
五、访问elasticsearch的状态
1. 本地访问
[root@localhost ~]# curl http://127.0.0.1:9200/_cluster/health?pretty=true
{
"cluster_name" : "elasticsearch",
"status" : "green",
"timed_out" : false,
"number_of_nodes" : 1,
"number_of_data_nodes" : 1,
"active_primary_shards" : 0,
"active_shards" : 0,
"relocating_shards" : 0,
"initializing_shards" : 0,
"unassigned_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
}
2. 对外IP访问
[root@localhost ~]# curl http://192.168.161.131:9200/_cluster/health?pretty=true
{
"cluster_name" : "elasticsearch",
"status" : "green",
"timed_out" : false,
"number_of_nodes" : 1,
"number_of_data_nodes" : 1,
"active_primary_shards" : 0,
"active_shards" : 0,
"relocating_shards" : 0,
"initializing_shards" : 0,
"unassigned_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
}
3. 查看es里面有什么内容
[root@localhost ~]# curl -i -XGET 'http://192.168.161.131:9200/_count?'
HTTP/1.1 200 OK
content-type: application/json; charset=UTF-8
content-length: 71
{"count":0,"_shards":{"total":0,"successful":0,"skipped":0,"failed":0}}
解释: 返回头部200，执行成功0个，返回0个
// 健康检查
curl http://192.168.161.131:9200/_cluster/health?pretty
// 集群详细信息 curl http://192.168.161.131:9200/_cluster/state?pretty
六. 安装elasticsearch-head插件
1. 安装npm命令:
yum install gcc gcc-c++
wget https://npm.taobao.org/mirrors/node/v10.14.1/node-v10.14.1-linux-x64.tar.gz
tar -xvf node-v10.14.1-linux-x64.tar.gz
mv node-v10.14.1-linux-x64 /usr/local/node
vi /etc/profile
在文件最后添加以下配置：
export NODE_HOME=/usr/local/node export PATH=$NODE_HOME/bin:$PATH
source /etc/profile
node -v
npm -v
npm install -g cnpm --registry=https://registry.npm.taobao.org
npm install -g grunt-cli --registry=https://registry.npm.taobao.org
grunt -version
2. 下载安装elasticsearch-head
git clone https://github.com/mobz/elasticsearch-head.git
cd elasticsearch-head
cnpm install （好像会出现红色的错误，先不管吧）
[root@localhost elasticsearch-head]# grunt -version
grunt-cli v1.3.2
grunt v1.0.1
(上面这样子显示两个就Ok啦)
3. 配置
3.1 vim Gruntfile.js (注意逗号)
3.2 vim _site/app.js
3.3 vim /etc/elasticsearch/elasticsearch.yml
增加：
http.cors.enabled: true
http.cors.allow-origin: "*"
七. 启动
systemctl restart elasticsearch
systemctl status elasticsearch
cd /home/study/ELK/elasticsearch-head && grunt server &
(运行后，按enter， 会退回命令行，服务已经在后台运行了)
// 如果想要关闭grunt服务
ps -ef | grep grunt
kill -9 pid
5. 访问
（期待您上面二维码打赏，也祝您前程似锦，步步高升）
