验证Logstash

[root@localhost logstash]# bin/logstash -e 'input { stdin { } } output { stdout {} }'
Sending Logstash's logs to /var/log/logstash which is now configured via log4j2.properties
The stdin plugin is now waiting for input:
hello world
2017-02-21T08:23:56.878Z localhost.localdomain hello world

1.执行logstash -e 'input { stdin { } } output { stdout {} }'
2.-e 参数允许Logstash直接通过命令行接受设置
3.无论我们输入什么字符，Logstash都会按照某种格式来返回我们输入的字符

在output中加入codec可以改变输出变现

[root@localhost logstash]# bin/logstash -e 'input { stdin { } } output { stdout { codec => rubydebug } }'
Sending Logstash's logs to /var/log/logstash which is now configured via log4j2.properties
The stdin plugin is now waiting for input:
hello world again
{
    "@timestamp" => 2017-02-21T08:30:58.821Z,
      "@version" => "1",
          "host" => "localhost.localdomain",
       "message" => "hello world again"
}

验证数据是否发送到Elasticsearch

[root@localhost logstash]# bin/logstash -e 'input { stdin { } } output { elasticsearch { hosts => ["172.16.24.105:9200"] } }'
Sending Logstash's logs to /var/log/logstash which is now configured via log4j2.properties
The stdin plugin is now waiting for input:
test send elasticsearch

1.output里面配置elasticsearch的地址
2.输入数据之后，logstash会像之前那样处理数据，但是此次看不到输出(没有配置stdout)
3.curl 'http://localhost:9200/_search?pretty'--查看ES是否接受到了数据

多重输出:数据保存到ES，同时在控制台显示

bin/logstash -e 'input { stdin { } } output { elasticsearch { hosts => ["172.16.24.105:9200"] } stdout { codec => rubydebug}}'