Example of ELK logstash processing MySQL slow query logs

Source: Internet
Author: User
Tags regular expression logstash filebeat

In a production environment, logstash often processes logs in multiple formats. Different log formats have different parsing methods. The following is an example of how logstash processes multi-line logs and analyzes MySQL slow query logs. This is a frequent occurrence and many questions are raised on the Internet.
The slow query log format of MySQL is as follows:


# User @ Host: ttlsa [ttlsa] @ [10.4.10.12] Id: 69641319
# Query_time: 0.000148 Lock_time: 0.000023 Rows_sent: 0 Rows_examined: 202
SET timestamp = 1456717595;
Select 'id', 'URL' from 'file' where 'id' in ('20140901', '20140901 ');
# Time: 160229 11:46:37
Filebeat configuration

I am using filebeat 1.1.1. In the previous version, there is no multiline configuration item. For details, refer to the following.


Filebeat:
Prospectors:
    -
Paths:
-/Www.ttlsa.com/logs/mysql/slow.log
Document_type: mysqlslowlog
Input_type: log
Multiline:
Negate: true
Match: after
Registry_file:/var/lib/filebeat/registry
Output:
Logstash:
Hosts: ["10.6.66.14: 5046"]
Shipper:
Logging:
Files:

Logstash configuration

1. input segment configuration


# Vi/etc/logstash/conf. d/01-beats-input.conf
Input {
Beats {
Port = & gt; 5046
Host => "10.6.66.14"
 }
}

2. filter segment configuration

# Vi/etc/logstash/conf. d/16-mysqlslowlog.log
Filter {
If [type] = "mysqlslowlog "{
Grok {
Match => {"message" => "(? M) ^ # \ s + User @ Host: \ s + % {USER: user} \ [[^ \] + \] \ s + @ \ s + (? :(? <Clienthost> \ S *))? \[(? : % {IPV4: clientip })? \] \ S + Id: \ s + % {NUMBER: row_id: int} \ n # \ s + Query_time: \ s + % {NUMBER: query_time: float} \ s + Lock_time: \ s + % {NUMBER: lock_time: float} \ s + Rows_sent: \ s + % {NUMBER: rows_sent: int} \ s + Rows_examined: \ s + % {NUMBER: rows_examined: int} \ n \ s *(? : Use % {DATA: database}; \ s * \ n )? SET \ s + timestamp = % {NUMBER: timestamp}; \ n \ s *(? <SQL> (? <Action> \ w +) \ B. *;) \ s *(? : \ N # \ s + Time )?. * $ "}
  }
Date {
Match => ["timestamp", "UNIX", "YYYY-MM-dd HH: mm: ss"]
Remove_field => ["timestamp"]
    }
  }
}

The key is the configuration of the grok regular expression.

3. output segment configuration


# Vi/etc/logstash/conf. d/30-beats-output.conf
Output {
If "_ grokparsefailure" in [tags] {
File {path => "/var/log/logstash/grokparsefailure-% {[type]}-% {+ YYYY. MM. dd}. log "}
    }
 
If [@ metadata] [type] in ["mysqlslowlog"] {
Elasticsearch {
Hosts => ["10.6.66.14: 9200"]
Sniffing => true
Manage_template => false
Template_overwrite => true
Index => "% {[@ metadata] [beat]}-% {[type]}-% {+ YYYY. MM. dd }"
Document_type => "% {[@ metadata] [type]}"
    }
  }
}

 

If you are using a version earlier than filebeat1.1.1, the configuration is as follows:

1. filebeat configuration

Filebeat:
Prospectors:
    -
Paths:
-/Www.ttlsa.com/logs/mysql/slow.log
Document_type: mysqlslowlog
Input_type: log
Registry_file:/var/lib/filebeat/registry
Output:
Logstash:
Hosts: ["10.6.66.14: 5046"]
Shipper:
Logging:
Files:

2. logstash input segment configuration


Input {
Beats {
Port = & gt; 5046
Host => "10.6.66.14"
Codec => multiline {
Pattern => "^ # User @ Host :"
Negate => true
What => previous
    }
 }
}
Other configurations remain unchanged.

Contact Us

The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion; products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the content of the page makes you feel confusing, please write us an email, we will handle the problem within 5 days after receiving your email.

If you find any instances of plagiarism from the community, please send an email to: info-contact@alibabacloud.com and provide relevant evidence. A staff member will contact you within 5 working days.

A Free Trial That Lets You Build Big!

Start building with 50+ products and up to 12 months usage for Elastic Compute Service

  • Sales Support

    1 on 1 presale consultation

  • After-Sales Support

    24/7 Technical Support 6 Free Tickets per Quarter Faster Response

  • Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.