在Logstash中为sql_last_value使用表的ID? [英] Using an id of a table for sql_last_value in logstash?

问题描述

我在logstash输入中的jdbc插件中有这样的MySQL语句.

I'm having a MySQL statement as such within my jdbc plugin in logstash input.

statement => "SELECT * from TEST where id > :sql_last_value"

我的表没有这样的date或datetime字段.因此，我试图通过使用scheduler每分钟检查一次索引来更新索引，是否在表中添加了任何新行.

My table doesn't have any date or datetime field as such. So I'm trying to update the index, by checking minute by minute using a scheduler, whether any new rows have been added to the table.

我应该只能更新新记录，而不能更新现有记录中的现有值更改.为此，我要使用logstash输入:

I should only be able to update the new records, rather than updating the existing value changes from an existing record. So to do this I'm having this kinda of a logstash input:

input {
    jdbc {
        jdbc_connection_string => "jdbc:mysql://myhostmachine:3306/mydb" 
        jdbc_user => "root"
        jdbc_password => "root"
        jdbc_validate_connection => true
        jdbc_driver_library => "/mypath/mysql-connector-java-5.1.39-bin.jar"
        jdbc_driver_class => "com.mysql.jdbc.Driver"
        jdbc_paging_enabled => "true"
        jdbc_page_size => "50000"
        schedule => "* * * * *"
        statement => "SELECT * from mytable where id > :sql_last_value"
        use_column_value => true
        tracking_column => id
        last_run_metadata_path => "/path/.logstash_jdbc_last_run"
        clean_run => true
    }
}

因此，每当我创建索引并运行此logstash文件以上传文档时，它根本就不会上传.文档计数显示为零.在运行logstash conf文件之前，请确保已删除.logstash_jdbc_last_run.

So whenever I create an index and run this logstash file in order to upload the docs, it doesn't get uploaded at all. The docs count shows as zero. I made sure that I deleted the .logstash_jdbc_last_run before I ran the logstash conf file.

logstash控制台输出的一部分:

Part of logstash console output:

[2016-11-02T16:33:00,294] [INFO] [logstash.inputs.jdbc] (0.002000s)SELECT count(*)AS count FROM(SELECT * from TEST其中 id>'2016-11-02 11:02:00')AS t1 LIMIT 1

[2016-11-02T16:33:00,294][INFO ][logstash.inputs.jdbc ] (0.002000s) SELECT count(*) AS count FROM (SELECT * from TEST where id > '2016-11-02 11:02:00') AS t1 LIMIT 1

并继续进行逐分钟检查，这是正确的，但随后却没有记录.它是如何工作的?

and this keeps on going by checking minute by minute which is correct but then it doesn't get the records. How does it work?

我错过了什么吗?任何帮助，将不胜感激.

Am I missing something? Any help could be appreciated.

推荐答案

您需要像这样修改您的logstash配置:

You need to modify your logstash configuration like this:

jdbc { 
  jdbc_connection_string => "jdbc:mysql://myhostmachine:3306/mydb" 
  jdbc_user => "root" 
  jdbc_password => "root" 
  jdbc_validate_connection => true 
  jdbc_driver_library => "/mypath/mysql-connector-java-5.1.39-bin.jar" 
  jdbc_driver_class => "com.mysql.jdbc.Driver" 
  jdbc_paging_enabled => "true" 
  jdbc_page_size => "50000" 
  schedule => "* * * * *" 
  statement => "SELECT * from TEST where id > :sql_last_value" 
  use_column_value => true 
  tracking_column => "id" 
  tracking_column_type => "numeric" 
  clean_run => true 
  last_run_metadata_path => "/mypath/.logstash_jdbc_last_run" 
}

最后五个设置对您而言很重要.同样，即使clean_run => true确实要删除.logstash_jdbc_last_run文件，也要确保删除该文件.

The last five settings are important in your case. Also make sure to delete the .logstash_jdbc_last_run file even though clean_run => true does it.

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