ELK日志分析平台（二）

ELK架构图例

紧接上文：https://www.jianshu.com/p/af308f558c7d

logstash安装

购买云主机

主机	IP地址	配置
logstash	192.168.1.47	最低配置2核2G

logstash云主机安装

[root@logstash ~]# vim /etc/hosts
192.168.1.41    es-0001
192.168.1.42    es-0002
192.168.1.43    es-0003
192.168.1.44    es-0004
192.168.1.45    es-0005
192.168.1.47    logstash
[root@logstash ~]# yum install -y java-1.8.0-openjdk logstash

基础配置样例

[root@logstash ~]# ln -s /etc/logstash /usr/share/logstash/config
[root@logstash ~]# vim /etc/logstash/conf.d/my.conf
input { 
  stdin {}
}

filter{ }

output{ 
  stdout{}
}
[root@logstash ~]# /usr/share/logstash/bin/logstash

插件与调试格式

使用json格式字符串测试 {"a":"1", "b":"2", "c":"3"}

[root@logstash ~]# vim /etc/logstash/conf.d/my.conf
input { 
  stdin { codec => "json" }
}

filter{ }

output{ 
  stdout{ codec => "rubydebug" }
}
[root@logstash ~]# /usr/share/logstash/bin/logstash

官方手册地址

https://www.elastic.co/guide/en/logstash/current/index.html

input file插件

[root@logstash ~]# vim /etc/logstash/conf.d/my.conf
input { 
  file {
    path => ["/tmp/c.log"]
    type => "test"
    start_position => "beginning"
    sincedb_path => "/var/lib/logstash/sincedb"
  }
}
filter{ }
output{ 
  stdout{ codec => "rubydebug" }
}
[root@logstash ~]# rm -rf /var/lib/logstash/plugins/inputs/file/.sincedb_*
[root@logstash ~]# /usr/share/logstash/bin/logstash

filter grok插件

正则表达式分组匹配格式: (?<名字>正则表达式)

正则表达式宏调用格式: %{宏名称:名字}

宏文件路径

/usr/share/logstash/vendor/bundle/jruby/2.5.0/gems/logstash-patterns-core-4.1.2/patterns

[root@logstash ~]# echo '192.168.1.252 - - [29/Jul/2020:14:06:57 +0800] "GET /info.html HTTP/1.1" 200 119 "-" "curl/7.29.0"' >/tmp/c.log
[root@logstash ~]# vim /etc/logstash/conf.d/my.conf
input { 
  file {
    path => ["/tmp/c.log"]
    type => "test"
    start_position => "beginning"
    sincedb_path => "/dev/null"
  }
}
filter{ 
  grok {
    match => { "message" => "%{HTTPD_COMBINEDLOG}" }
  }
}
output{ 
  stdout{ codec => "rubydebug" }
}
[root@logstash ~]# /usr/share/logstash/bin/logstash

output elasticsearch插件

[root@logstash ~]# vim /etc/logstash/conf.d/my.conf
input { 
  file {
    path => ["/tmp/c.log"]
    type => "test"
    start_position => "beginning"
    sincedb_path => "/dev/null"
  }
}
filter{ 
  grok {
    match => { "message" => "%{HTTPD_COMBINEDLOG}" }
  }
}
output{ 
  stdout{ codec => "rubydebug" }
  elasticsearch {
    hosts => ["es-0004:9200", "es-0005:9200"]
    index => "weblog-%{+YYYY.MM.dd}"
  }
}
[root@logstash ~]# /usr/share/logstash/bin/logstash

浏览器打开 head 插件，通过 web 页面浏览验证
http://公网IP:9200/_plugin/head/

web 页面浏览验证

filebeat配置

logstash beats插件

[root@logstash ~]# vim /etc/logstash/conf.d/my.conf
input { 
  stdin { codec => "json" }
  file{
    path => ["/tmp/c.log"]
    type => "test"
    start_position => "beginning"
    sincedb_path => "/var/lib/logstash/sincedb"
  }
  beats {
    port => 5044
  }
} 

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

output{ 
  stdout{ codec => "rubydebug" }
  elasticsearch {
    hosts => ["es-0004:9200", "es-0005:9200"]
    index => "weblog-%{+YYYY.MM.dd}"
  }
}
[root@logstash ~]# /usr/share/logstash/bin/logstash

web服务安装filebeat

[root@web ~]# yum install -y filebeat
[root@web ~]# vim /etc/filebeat/filebeat.yml
24:  enabled: true
28:  - /var/log/httpd/access_log
45:    fields: 
46:       my_type: apache
148, 150 注释掉
161: output.logstash:
163:   hosts: ["192.168.1.47:5044"]
180, 181, 182 注释掉
[root@web ~]# grep -Pv "^\s*(#|$)" /etc/filebeat/filebeat.yml
[root@web ~]# systemctl enable --now filebeat