ELK部署检测nginx日志demo

ELK

E: ElasticSearch 搜索引擎存储 https://www.elastic.co/cn/downloads/elasticsearch

L: Logstash 日志收集 https://www.elastic.co/cn/downloads/logstash

K: kibana 展示 https://www.elastic.co/cn/downloads/kibana

ElasticSearch

下载解压

tar -zxvf elasticsearch-7.3.1-linux-x86_64.tar.gz

在es下创建数据和日志文件夹，修改配置文件

#对应配置里的数据和日志文件目录
mkdir /usr/local/src/elasticsearch/elasticsearch-7.3.1/data
mkdir /usr/local/src/elasticsearch/elasticsearch-7.3.1/logs
vim config/elasticsearch.yml

cluster.name: my-application

node.name: node-10

path.data: /usr/local/src/elasticsearch/elasticsearch-7.3.1/data

path.logs: /usr/local/src/elasticsearch/elasticsearch-7.3.1/logs

新建elkuser用户(注意不能使用root用户启动es)

#创建用户
useradd elkuser
#修改用户组和用户
chown -R elkuser:elkuser elasticsearch-7.3.1
#切换用户
su elkuser

启动
```
./bin/elasticsearch
```

Nginx

安装PCRE

安装编译工具及库文件

yum -y install make zlib zlib-devel gcc-c++ libtool  openssl openssl-devel

首先要安装 PCRE(作用是让 Nginx 支持 Rewrite 功能)

#下载
wget http://downloads.sourceforge.net/project/pcre/pcre/8.35/pcre-8.35.tar.gz
#解压安装包
tar -zxvf pcre-8.35.tar.gz
#进入安装包目录
cd pcre-8.35
#编译安装 
./configure
make && make install
#查看pcre版本
pcre-config --version

安装Nginx

#下载
wget http://nginx.org/download/nginx-1.6.2.tar.gz
#解压安装包
tar -zxvf nginx-1.6.2.tar.gz
#进入安装包目录
cd nginx-1.6.2/
#编译安装(注意pcre路径)
./configure --prefix=/usr/local/webserver/nginx --with-http_stub_status_module --with-http_ssl_module --with-pcre=/usr/local/src/nginx/pcre-8.35
make && make install
#查看pcre版本
/usr/local/webserver/nginx/sbin/nginx -v

检查

#检查配置文件nginx.conf的正确性命令
/usr/local/webserver/nginx/sbin/nginx -t

启动 Nginx

/usr/local/webserver/nginx/sbin/nginx
#查看进程
ps -ef |grep nginx

Nginx 其他命令

/usr/local/webserver/nginx/sbin/nginx -s reload            # 重新载入配置文件
/usr/local/webserver/nginx/sbin/nginx -s reopen           # 重启 Nginx
/usr/local/webserver/nginx/sbin/nginx -s stop               # 停止 Nginx

浏览器访问站点

Logstash

下载解压
```
tar -zxvf logstash-7.3.1.tar.gz
```
创建一个配置文件
```
vim logstash-nginx-access-log.conf
```
input {
path => "/usr/local/webserver/nginx/logs/*.log"
start_position => "beginning"
}
}

192.168.192.1 - - [12/Sep/2019:15:47:37 +0800] "GET / HTTP/1.1" 304 0 "-" "Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.131 Safari/537.36" "-"

filter {
grok {
match => {
"message" => '%{IPORHOST:remote_ip} - %{DATA:user_name} [%{HTTPDATE:time}] "%{WORD:request_action} %{DATA:request} HTTP/%{NUMBER:http_version}" %{NUMBER:response} %{NUMBER:bytes} "%{DATA:referrer}" "%{DATA:agent}"' } }
date {
match => [ "time" , "dd/MMM/yyyy:HH:mm:ss Z" ]
locale => cn
}
}

output {
elasticsearch {
hosts => ["192.168.192.10:9200"]
index => "logstash-nginx-access-log"
}
stdout { codec => rubydebug }
}
启动

bin/logstash -f logstash-nginx-access-log.conf

访问nginx页面

kibana

下载解压

tar -zxvf kibana-7.3.1-linux-x86_64.tar.gz
#进入kibana配置下
cd kibana-7.3.1-linux-x86_64/config
#修改配置文件
vim kibana.yml

server.host: "localhost"

elasticsearch.hosts: ["http://localhost:9200"]

启动(kibana不建议以root用户启动，如果用root启动，需要加--allow-root)
```
bin/kibana 
```
访问5601端口
创建日志索引
查看日志量等信息