企业—logstash采集apache的日志到elksticsearch

server1：elasticsearch
server2：logstash，apache

1.在server2上编辑logstash的的文件

[root@server2 conf.d]# pwd
/etc/logstash/conf.d
[root@server2 conf.d]# vim test.conf
input {
        stdin {}
}
filter {
  grok {
    match => { "message" => "%{IP:client} %{WORD:method} %{URIPATHPARAM:request} %{NUMBER:bytes} %{NUMBER:duration}" }
  }
}

output {
         stdout {}
}

2.执行

[root@server2 conf.d]# /usr/share/logstash/bin/logstash -f /etc/logstash/conf.d/test.conf
在下面输入：55.3.244.1 GET /index.html 15824 0.043    会被拆分成指定的的格式

3.在server2上1安装apache，编写其默认发布页面进行访问产生相应的日志

[root@server2 conf.d]# yum install -y httpd
[root@server2 conf.d]# systemctl start httpd
[root@server2 conf.d]# cd /var/www/html/
[root@server2 html]# vim index.html
[root@server2 html]# cat index.html 
www.westos.org

[root@foundation42 Desktop]# ab -c 1 -n 100 http://172.25.42.2/index.html  测试生成日志，如果没有ab命令安装httpd-tools

//logstash的相应目录下有httpd的配置输出格式的相应文件直接运用即可

[root@server2 html]# cd /usr/share/logstash/vendor/bundle/jruby/2.3.0/gems/logstash-patterns-core-4.1.2/patterns/
[root@server2 patterns]# cat httpd   

4.编辑es.conf

input {
#         stdin {}
#          file {
#                  path => "/var/log/elasticsearch/my-es.log"
#                  start_position => "beginning"
#                  codec => multiline {
#                           pattern => "^\["
#                           negate => "true"
#                           what => "previous"
#                }
#          }
#
#           syslog {
#                     port => 514
#            }
             file {
                      path => "/var/log/httpd/access_log"
                      start_position => "beginning"
             }
}

filter {
  grok {
    match => { "message" => "%{HTTPD_COMBINEDLOG" }
  }
}

output {
         stdout {}

         elasticsearch {
                hosts => ["172.25.42.1:9200"]
                index => "apachelog-%{+YYYY.MM.dd}"
        }

}

//执行：

[root@server2 conf.d]# /usr/share/logstash/bin/logstash -f /etc/logstash/conf.d/es.conf

在ui界面通过索引查看其相应的信息即可