logstash日志采集工具的安装部署

 1.从官网下载安装包，并通过Xftp5上传到机器集群上

下载logstash-6.2.3.tar.gz版本，并通过Xftp5上传到hadoop机器集群的第一个节点node1上的/opt/uploads/目录：

2、解压logstash-6.2.3.tar.gz，并把解压的安装包移动到/opt/app/目录上

tar zxvf  logstash-6.2.3.tar.gz

 mv logstash-6.2.3 /opt/app/  &&  cd /opt/app/

3、修改环境变量，编辑/etc/profile，并生效环境变量，输入如下命令：

sudo vi /etc/profile

添加如下内容：

export LOGSTASH_HOME=/opt/app/logstash-6.2.3
export PATH=:$PATH:$LOGSTASH_HOME/bin

使环境变量生效：source /etc/profile

4、配置文件类型

4.1 log-kafka配置文件

输入源为nginx的日志文件，输出源为kafka

input {
    file {
        path => "/var/logs/nginx/*.log"
        discover_interval => 5
        start_position => "beginning"
    }
}

output {
    kafka {
       topic_id => "accesslog"
       codec => plain {
          format => "%{message}"
          charset => "UTF-8"
       }
       bootstrap_servers => "hadoop1:9092,hadoop2:9092,hadoop3:9092"
    }
}

4.2 file-kafka配置文件

输入源为txt文件，输出源为kafka

input {
   file {
      codec => plain {
	    charset => "GB2312"
	  }
	  path => "D:/GameLog/BaseDir/*/*.txt"
	  discover_interval => 30
	  start_position => "beginning"
   }
}

output {
   kafka {
       topic_id => "gamelog"
	   codec => plain {
	      format => "%{message}"
		  charset => "GB2312"
	   }
	   bootstrap_servers => "hadoop1:9092,hadoop2:9092,hadoop3:9092"
   }
}

4.3 log-elasticsearch配置文件

输入源为nginx的日志文件，输出源为elasticsearch

input {
     file {
         type => "flow"
         path => "var/logs/nginx/*.log"
         discover_interval => 5
         start_position => "beginning"
     }
}

output {
    if [type] == "flow" {
        elasticsearch {
             index => "flow-%{+YYYY.MM.dd}"
             hosts => ["hadoop1:9200", "hadoop2:9200", "hadoop3:9200"]
        }
    }
}

4.4 kafka-elasticsearch配置文件

输入源为kafka的accesslog和gamelog主题，并在中间分别针对accesslog和gamelog进行过滤，输出源为elasticsearch。当input里面有多个kafka输入源时，client_id => "es*"必须添加且需要不同，否则会报错javax.management.InstanceAlreadyExistsException: kafka.consumer:type=app-info,id=logstash-0。

input {
  kafka {
     type => "accesslog"
     codec => "plain"
     auto_offset_reset => "earliest"
     client_id => "es1"
     group_id => "es1"
     topics => ["accesslog"]
     bootstrap_servers => "hadoop1:9092,hadoop2:9092,hadoop3:9092"
  }

  kafka {
     type => "gamelog"
     codec => "plain"
     auto_offset_reset => "earliest"
     client_id => "es2"
     group_id => "es2"
     topics => ["gamelog"]
     bootstrap_servers => "hadoop1:9092,hadoop2:9092,hadoop3:9092"
  }
}

filter {
  if [type] == "accesslog" {
     json {
	source => "message"
	remove_field => ["message"]
	target => "access"
     }
  }
  
  if [type] == "gamelog" {
     mutate {
         split => { "message" => "	" }
         add_field => {
	      "event_type" => "%{message[3]}"
	      "current_map" => "%{message[4]}"
	      "current_x" => "%{message[5]}"
	      "current_y" => "%{message[6]}"
	      "user" => "%{message[7]}"
	      "item" => "%{message[8]}"
	      "item_id" => "%{message[9]}"
	      "current_time" => "%{message[12]}"
         }
         remove_field => ["message"]
     }
  }
}

output {
  if [type] == "accesslog" {
     elasticsearch {
	   index => "accesslog"
	   codec => "json"
	   hosts => ["hadoop1:9200","hadoop2:9200","hadoop3:9200"]
     }
  }
  
  if [type] == "gamelog" {
     elasticsearch {
	    index => "gamelog"
	    codec => plain {
	         charset => "UTF-16BE"
	    }
	    hosts => ["hadoop1:9200","hadoop2:9200","hadoop3:9200"]
     }
  }
}

注：UTF-16BE为解决中文乱码，而不是UTF-8

5、logstash启动

logstash  -f  /opt/app/logstash-6.2.3/conf/flow-kafka.conf

6、logstash遇到的问题

1) 在使用logstash采集日志时，如果我们采用file为input类型，采用不能反复对一份文件进行测试！第一次会成功，之后就会失败！

 参考资料：

https://blog.csdn.net/lvyuan1234/article/details/78653324