Query Logging
ProxySQL能够记录完整的查询日志，是通过查询规则来配置，粒度可大可小。
Setup
首先，全局启用logging
SET mysql-eventslog_filename='queries.log';
变量需要load到runtime，最后save到磁盘
LOAD MYSQL VARIABLES TO RUNTIME; SAVE MYSQL VARIABLES TO DISK;
接下来，创建查询路由规则。如果你需要记录所有的查询，简单配置一下即可：
1 INSERT INTO mysql_query_rules (rule_id, active, match_digest, log,apply) VALUES (1,1,'.',1,0);
如果你想记录某个人的所有查询记录，如‘Bob’：
1 INSERT INTO mysql_query_rules (rule_id, active, username, match_pattern, log,apply) VALUES (1, 1, 'Bob', '.', 1, 0);
现在，加载到runtime并持久化到磁盘即可：
1 LOAD MYSQL QUERY RULES TO RUNTIME; 2 SAVE MYSQL QUERY RULES TO DISK;
Reading Logged Queries
查询日志以二进制的形式记录，源码中有一个app能将二进制转换成普通平面文件
1 $ ./tools/eventslog_reader_sample /var/lib/proxysql/file1.log.00001258 2 ProxySQL LOG QUERY: thread_id="2" username="root" schemaname=information_schema" client="127.0.0.1:58307" HID=0 server="127.0.0.1:3306" starttime="2016-10-23 12:34:37.132509" endtime="2016-10-23 12:34:38.347527" duration=1215018us digest="0xC5C3C490CA0825C1" 3 select sleep(1) 4 ProxySQL LOG QUERY: thread_id="2" username="root" schemaname=information_schema" client="127.0.0.1:58307" HID=0 server="127.0.0.1:3306" starttime="2016-10-23 12:41:38.604244" endtime="2016-10-23 12:41:38.813587" duration=209343us digest="0xE9D6D71A620B328F" 5 SELECT DATABASE() 6 ProxySQL LOG QUERY: thread_id="2" username="root" schemaname=test" client="127.0.0.1:58307" HID=0 server="127.0.0.1:3306" starttime="2016-10-23 12:42:38.511849" endtime="2016-10-23 12:42:38.712609" duration=200760us digest="0x524DB8D7A9B4C132" 7 select aaaaaaa
https://github.com/sysown/proxysql/tree/v1.4.4/tools
安装部署app：
- 克隆repo或者download源码安装
- cd到tools目录
- 执行make
Related Issues and Feature Requests
下面是一些相关功能的讨论
Issue #561 -- 记录所有查询
Feature Request #871 -- 针对Splunk/ElasticStack应用保存为json格式的日志
Feature Request #1184 -- 记录到数据库