- 错误日志（Error log）：记录启动、运行或停止mysqld遇到的问题；
- 通用查询日志（General query log）：记录服务器接收到的每一个命令，包括客户端连接以及sql执行记录等；
- 二进制日志（Binary log）：记录引起或可能引起数据更改的SQL，用于数据还原以及主从复制；
- 中继日志（Relay log）：从复制源服务器收到的数据更改日志；
- 慢查询日志（Slow query log）：执行时间超过long_query_time和没有使用索引的sql，用来发现并调优一些慢sql；
- DDL日志（DDL log (metadata log)）：DDL语句执行的元数据操作。
1. 通用查询日志设置
MySQL通用查询日志用来记录用户的所有操作，包括启动和关闭MySQL服务、insert/update/delete/select语句等。mysqld按照接收语句的顺序将执行语句写入查询日志，这可能与它们实际的执行顺序不同，该日志记录顺序不同于二进制日志，二进制日志的执行顺序是在语句执行之后但释放任何锁之前。此外，查询日志只包含select语句，而仅仅是select的语句不写入二进制日志。
默认情况下，常规查询日志处于禁用状态，要明确指定初始常规查询日志状态，使用全局系统变量 --general_log[={0|1}]，不带参数或参数为1时， --general_log启用日志，参数为0时，此选项禁用日志；使用 --general_log_file=file_name 指定日志文件名，使用系统变量log_output指定日志目标。
- 通用查询日志输出格式：log_output=[none|file|table|file,table]
- 是否启用通用查询日志：general_log=[on|off]或者general_log=[1|0]
- 通用查询日志位置及名字：general_log_file[=filename]
mysql> SHOW VARIABLES LIKE '%general%';
+------------------+-------------------------------+
| Variable_name | Value |
+------------------+-------------------------------+
| general_log | OFF |
| general_log_file | /home/mysql8/data/chengyu.log |
+------------------+-------------------------------+
2 rows in set (0.05 sec)
MySQL通用查询日志默认名称为host_name.log（host_name为主机名），除非给出绝对路径名以指定其他目录，否则服务器将在数据目录中创建通用日志文件。
服务器重启和日志刷新不会生成新的常规查询日志文件（尽管刷新会关闭并重新打开它），重命名文件并创建一个新文件，使用以下命令：
shell> mv host_name.log host_name-old.log
shell> mysqladmin flush-logs
shell> mv host_name-old.log backup-directory
2. 通用查询日志使用
开启通用查询日志：
mysql> SET GLOBAL general_log = 'ON';
Query OK, 0 rows affected (0.02 sec)
mysql> SHOW VARIABLES LIKE '%general%';
+------------------+-------------------------------+
| Variable_name | Value |
+------------------+-------------------------------+
| general_log | ON |
| general_log_file | /home/mysql8/data/chengyu.log |
+------------------+-------------------------------+
2 rows in set (0.00 sec)
mysql> show variables like 'log_output';
+---------------+-------+
| Variable_name | Value |
+---------------+-------+
| log_output | FILE |
+---------------+-------+
1 row in set (0.00 sec)
执行增删改查看一下通用查询日志记录：
mysql> use dbcy;
Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -A
Database changed
mysql> select * from t1;
+-----+--------+
| tid | tname |
+-----+--------+
| 16 | 钟一 |
| 17 | 赵二 |
| 18 | 张三 |
| 19 | 李四 |
| 20 | 王五 |
+-----+--------+
5 rows in set (0.00 sec)
mysql> delete from t1 where tid=16;
Query OK, 1 row affected (0.07 sec)
mysql> insert into t1 values(1,'狗十三');
Query OK, 1 row affected (0.06 sec)
mysql> update t1 set tid=2 where tid=1;
Query OK, 1 row affected (0.10 sec)
Rows matched: 1 Changed: 1 Warnings: 0
mysql> select * from t1;
+-----+-----------+
| tid | tname |
+-----+-----------+
| 2 | 狗十三 |
| 17 | 赵二 |
| 18 | 张三 |
| 19 | 李四 |
| 20 | 王五 |
+-----+-----------+
5 rows in set (0.00 sec)
mysql> system more /home/mysql8/data/chengyu.log;
/usr/local/mysql8/bin/mysqld, Version: 8.0.20 (Source distribution). started with:
Tcp port: 3307 Unix socket: /usr/local/mysql8/mysql.sock
Time Id Command Argument
2020-07-29T02:09:44.391267Z 8 Query SHOW VARIABLES LIKE '%general%'
2020-07-29T02:09:55.013330Z 8 Query show databases
2020-07-29T02:09:58.566908Z 8 Query SELECT DATABASE()
2020-07-29T02:09:58.585828Z 8 Init DB dbcy
2020-07-29T02:09:58.587318Z 8 Query show databases
2020-07-29T02:09:58.588165Z 8 Query show tables
2020-07-29T02:09:58.591758Z 8 Field List t1
2020-07-29T02:09:58.596068Z 8 Field List t2
2020-07-29T02:09:58.597682Z 8 Field List tb_cylog
2020-07-29T02:09:58.599708Z 8 Field List tb_notice
2020-07-29T02:09:58.601173Z 8 Field List v_cylog
2020-07-29T02:10:01.523953Z 8 Query show tables
2020-07-29T02:10:09.588382Z 8 Query select * from t1
2020-07-29T02:10:27.835936Z 8 Query delete from t1 where tid=16
2020-07-29T02:10:56.377920Z 8 Query insert into t1 values(1,'狗十三')
2020-07-29T02:11:30.086557Z 8 Query update t1 set tid=2 where tid=1
2020-07-29T02:11:34.252839Z 8 Query select * from t1
修改通用查询日志的输出方式log_output，看一下日志输出情况：
--mysql库的general_log表记录了通用查询日志的信息
mysql> desc mysql.general_log;
+--------------+-----------------+------+-----+----------------------+--------------------------------------------------+
| Field | Type | Null | Key | Default | Extra |
+--------------+-----------------+------+-----+----------------------+--------------------------------------------------+
| event_time | timestamp(6) | NO | | CURRENT_TIMESTAMP(6) | DEFAULT_GENERATED on update CURRENT_TIMESTAMP(6) |
| user_host | mediumtext | NO | | NULL | |
| thread_id | bigint unsigned | NO | | NULL | |
| server_id | int unsigned | NO | | NULL | |
| command_type | varchar(64) | NO | | NULL | |
| argument | mediumblob | NO | | NULL | |
+--------------+-----------------+------+-----+----------------------+--------------------------------------------------+
6 rows in set (0.00 sec)
mysql> select thread_id,command_type,argument from mysql.general_log;
Empty set (0.00 sec)
--设置输出目标为file+table
mysql> set global log_output='file,table';
Query OK, 0 rows affected (0.00 sec)
mysql> insert into t1 values(3,'曹成屿');
Query OK, 1 row affected (0.08 sec)
mysql> system more /home/mysql8/data/chengyu.log;
/usr/local/mysql8/bin/mysqld, Version: 8.0.20 (Source distribution). started with:
Tcp port: 3307 Unix socket: /usr/local/mysql8/mysql.sock
Time Id Command Argument
2020-07-29T02:09:44.391267Z 8 Query SHOW VARIABLES LIKE '%general%'
2020-07-29T02:09:55.013330Z 8 Query show databases
2020-07-29T02:09:58.566908Z 8 Query SELECT DATABASE()
2020-07-29T02:09:58.585828Z 8 Init DB dbcy
2020-07-29T02:09:58.587318Z 8 Query show databases
2020-07-29T02:09:58.588165Z 8 Query show tables
2020-07-29T02:09:58.591758Z 8 Field List t1
2020-07-29T02:09:58.596068Z 8 Field List t2
2020-07-29T02:09:58.597682Z 8 Field List tb_cylog
2020-07-29T02:09:58.599708Z 8 Field List tb_notice
2020-07-29T02:09:58.601173Z 8 Field List v_cylog
2020-07-29T02:10:01.523953Z 8 Query show tables
2020-07-29T02:10:09.588382Z 8 Query select * from t1
2020-07-29T02:10:27.835936Z 8 Query delete from t1 where tid=16
2020-07-29T02:10:56.377920Z 8 Query insert into t1 values(1,'狗十三')
2020-07-29T02:11:30.086557Z 8 Query update t1 set tid=2 where tid=1
2020-07-29T02:11:34.252839Z 8 Query select * from t1
2020-07-29T02:25:58.802863Z 8 Query desc mysql.general_log
2020-07-29T02:27:12.874205Z 8 Query desc mysql.general_log
2020-07-29T02:27:24.411720Z 8 Query select thread_id,command_type,argument from mysql.general_log
2020-07-29T02:27:51.665524Z 8 Query show variables like 'log_output'
2020-07-29T02:28:12.046406Z 8 Query set global log_output='file,table'
2020-07-29T02:28:38.739788Z 8 Query insert into t1 values(3,'曹成屿')
mysql> select thread_id,command_type,argument from mysql.general_log;
+-----------+--------------+------------------------------------------------------------------------------------------------------------------------------+
| thread_id | command_type | argument |
+-----------+--------------+------------------------------------------------------------------------------------------------------------------------------+
| 8 | Query | 0x696E7365727420696E746F2074312076616C75657328332C27E69BB9E68890E5B1BF2729 |
| 8 | Query | 0x73656C656374207468726561645F69642C636F6D6D616E645F747970652C617267756D656E742066726F6D206D7973716C2E67656E6572616C5F6C6F67 |
+-----------+--------------+------------------------------------------------------------------------------------------------------------------------------+
2 rows in set (0.00 sec)
--mysql.general_log的argument为二进制格式，要想可读，需要进行convert(argument using UTF8)转换。
mysql> select thread_id,command_type,convert(argument using UTF8) from mysql.general_log;
+-----------+--------------+-----------------------------------------------------------------------------------+
| thread_id | command_type | convert(argument using UTF8) |
+-----------+--------------+-----------------------------------------------------------------------------------+
| 8 | Query | insert into t1 values(3,'曹成屿') |
| 8 | Query | select thread_id,command_type,argument from mysql.general_log |
+-----------+--------------+-----------------------------------------------------------------------------------+
--关闭general_log
mysql> set global general_log=off;
Query OK, 0 rows affected (0.04 sec)
mysql> show variables like '%gener%';
+----------------------------------------------+-------------------------------+
| Variable_name | Value |
+----------------------------------------------+-------------------------------+
| auto_generate_certs | ON |
| caching_sha2_password_auto_generate_rsa_keys | ON |
| general_log | OFF |
| general_log_file | /home/mysql8/data/chengyu.log |
| generated_random_password_length | 20 |
| histogram_generation_max_mem_size | 20000000 |
| sha256_password_auto_generate_rsa_keys | ON |
+----------------------------------------------+-------------------------------+
7 rows in set (0.00 sec)
mysql> SHOW VARIABLES LIKE '%general%';
+------------------+-------------------------------+
| Variable_name | Value |
+------------------+-------------------------------+
| general_log | OFF |
| general_log_file | /home/mysql8/data/chengyu.log |
+------------------+-------------------------------+
2 rows in set (0.00 sec)
mysql> delete from t1 where tid=3;
Query OK, 1 row affected (0.05 sec)
mysql> system more /home/mysql8/data/chengyu.log;
/usr/local/mysql8/bin/mysqld, Version: 8.0.20 (Source distribution). started with:
Tcp port: 3307 Unix socket: /usr/local/mysql8/mysql.sock
Time Id Command Argument
2020-07-29T02:09:44.391267Z 8 Query SHOW VARIABLES LIKE '%general%'
2020-07-29T02:09:55.013330Z 8 Query show databases
2020-07-29T02:09:58.566908Z 8 Query SELECT DATABASE()
2020-07-29T02:09:58.585828Z 8 Init DB dbcy
2020-07-29T02:09:58.587318Z 8 Query show databases
2020-07-29T02:09:58.588165Z 8 Query show tables
2020-07-29T02:09:58.591758Z 8 Field List t1
2020-07-29T02:09:58.596068Z 8 Field List t2
2020-07-29T02:09:58.597682Z 8 Field List tb_cylog
2020-07-29T02:09:58.599708Z 8 Field List tb_notice
2020-07-29T02:09:58.601173Z 8 Field List v_cylog
2020-07-29T02:10:01.523953Z 8 Query show tables
2020-07-29T02:10:09.588382Z 8 Query select * from t1
2020-07-29T02:10:27.835936Z 8 Query delete from t1 where tid=16
2020-07-29T02:10:56.377920Z 8 Query insert into t1 values(1,'狗十三')
2020-07-29T02:11:30.086557Z 8 Query update t1 set tid=2 where tid=1
2020-07-29T02:11:34.252839Z 8 Query select * from t1
2020-07-29T02:25:58.802863Z 8 Query desc mysql.general_log
2020-07-29T02:27:12.874205Z 8 Query desc mysql.general_log
2020-07-29T02:27:24.411720Z 8 Query select thread_id,command_type,argument from mysql.general_log
2020-07-29T02:27:51.665524Z 8 Query show variables like 'log_output'
2020-07-29T02:28:12.046406Z 8 Query set global log_output='file,table'
2020-07-29T02:28:38.739788Z 8 Query insert into t1 values(3,'曹成屿')
2020-07-29T02:28:54.922368Z 8 Query select thread_id,command_type,argument from mysql.general_log
2020-07-29T02:30:34.609885Z 8 Query set global general_log=off
mysql> select thread_id,command_type,convert(argument using UTF8) from mysql.general_log;
+-----------+--------------+-----------------------------------------------------------------------------------+
| thread_id | command_type | convert(argument using UTF8) |
+-----------+--------------+-----------------------------------------------------------------------------------+
| 8 | Query | insert into t1 values(3,'曹成屿') |
| 8 | Query | select thread_id,command_type,argument from mysql.general_log |
| 8 | Query | set global general_log=off |
+-----------+--------------+------------------------------------------------------------------------------------------------------------------------------+
3 rows in set (0.00 sec)
general_log_file为NONE时，则即使启用了常规日志，服务器也不会写入任何查询；如果日志目标值不包含FILE，则设置日志文件名对日志记录无效 。
--修改log_output为none时，执行操作将不写入通用日志文件
mysql> set global log_output=none;
Query OK, 0 rows affected (0.00 sec)
mysql> SHOW VARIABLES LIKE '%general%';
+------------------+-------------------------------+
| Variable_name | Value |
+------------------+-------------------------------+
| general_log | OFF |
| general_log_file | /home/mysql8/data/chengyu.log |
+------------------+-------------------------------+
2 rows in set (0.00 sec)
mysql> set global general_log=on;
Query OK, 0 rows affected (0.00 sec)
mysql> SHOW VARIABLES LIKE '%general%';
+------------------+-------------------------------+
| Variable_name | Value |
+------------------+-------------------------------+
| general_log | ON |
| general_log_file | /home/mysql8/data/chengyu.log |
+------------------+-------------------------------+
2 rows in set (0.00 sec)
mysql> insert into t1 values(5,'呢呢');
Query OK, 1 row affected (0.09 sec)
mysql> system more /home/mysql8/data/chengyu.log;
/usr/local/mysql8/bin/mysqld, Version: 8.0.20 (Source distribution). started with:
Tcp port: 3307 Unix socket: /usr/local/mysql8/mysql.sock
Time Id Command Argument
2020-07-29T02:09:44.391267Z 8 Query SHOW VARIABLES LIKE '%general%'
2020-07-29T02:09:55.013330Z 8 Query show databases
2020-07-29T02:09:58.566908Z 8 Query SELECT DATABASE()
2020-07-29T02:09:58.585828Z 8 Init DB dbcy
2020-07-29T02:09:58.587318Z 8 Query show databases
2020-07-29T02:09:58.588165Z 8 Query show tables
2020-07-29T02:09:58.591758Z 8 Field List t1
2020-07-29T02:09:58.596068Z 8 Field List t2
2020-07-29T02:09:58.597682Z 8 Field List tb_cylog
2020-07-29T02:09:58.599708Z 8 Field List tb_notice
2020-07-29T02:09:58.601173Z 8 Field List v_cylog
2020-07-29T02:10:01.523953Z 8 Query show tables
2020-07-29T02:10:09.588382Z 8 Query select * from t1
2020-07-29T02:10:27.835936Z 8 Query delete from t1 where tid=16
2020-07-29T02:10:56.377920Z 8 Query insert into t1 values(1,'狗十三')
2020-07-29T02:11:30.086557Z 8 Query update t1 set tid=2 where tid=1
2020-07-29T02:11:34.252839Z 8 Query select * from t1
2020-07-29T02:25:58.802863Z 8 Query desc mysql.general_log
2020-07-29T02:27:12.874205Z 8 Query desc mysql.general_log
2020-07-29T02:27:24.411720Z 8 Query select thread_id,command_type,argument from mysql.general_log
2020-07-29T02:27:51.665524Z 8 Query show variables like 'log_output'
2020-07-29T02:28:12.046406Z 8 Query set global log_output='file,table'
2020-07-29T02:28:38.739788Z 8 Query insert into t1 values(3,'曹成屿')
2020-07-29T02:28:54.922368Z 8 Query select thread_id,command_type,argument from mysql.general_log
2020-07-29T02:30:34.609885Z 8 Query set global general_log=off
/usr/local/mysql8/bin/mysqld, Version: 8.0.20 (Source distribution). started with:
Tcp port: 3307 Unix socket: /usr/local/mysql8/mysql.sock
Time Id Command Argument
mysql> select thread_id,command_type,convert(argument using UTF8) from mysql.general_log;
+-----------+--------------+------------------------------------------------------------------------------------------------------------------------------+
| thread_id | command_type | argument |
+-----------+--------------+------------------------------------------------------------------------------------------------------------------------------+
| 8 | Query | insert into t1 values(3,'曹成屿')|
| 8 | Query | select thread_id,command_type,argument from mysql.general_log|
| 8 | Query | set global general_log=off|
+-----------+--------------+------------------------------------------------------------------------------------------------------------------------------+
3 rows in set (0.00 sec)
3. 会话级别的通用查询日志
sql_log_off：用于禁用或启用当前会话的通用查询日志记录，默认值为OFF（即启用日志记录）。
log-raw：抑制通用查询日志的密码重写，服务器会重写某些写入普通查询日志，慢速查询日志和二进制日志的语句中的密码，启动该参数以使它们不会以纯文本形式出现。通过使用该参数对于诊断目的可能有用，以查看服务器接收到的语句的确切文本，但是出于安全原因，不建议将其用于生产。
来看下开启关闭sql_log_off对写入用查询日志的影响：
mysql> system more /home/mysql8/data/chengyu.log;
mysql> SHOW VARIABLES LIKE '%general%';
+------------------+-------------------------------+
| Variable_name | Value |
+------------------+-------------------------------+
| general_log | OFF |
| general_log_file | /home/mysql8/data/chengyu.log |
+------------------+-------------------------------+
2 rows in set (0.00 sec)
mysql> set global general_log=on;
Query OK, 0 rows affected (0.00 sec)
mysql> SHOW VARIABLES LIKE '%general%';
+------------------+-------------------------------+
| Variable_name | Value |
+------------------+-------------------------------+
| general_log | ON |
| general_log_file | /home/mysql8/data/chengyu.log |
+------------------+-------------------------------+
2 rows in set (0.01 sec)
--关闭sql_log_off
mysql> set sql_log_off=off;
Query OK, 0 rows affected (0.00 sec)
mysql> use dbcy;
Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -A
Database changed
mysql> insert into t1 values(6,'大惊小怪');
Query OK, 1 row affected (0.06 sec)
mysql> system more /home/mysql8/data/chengyu.log;
/usr/local/mysql8/bin/mysqld, Version: 8.0.20 (Source distribution). started with:
Tcp port: 3307 Unix socket: /usr/local/mysql8/mysql.sock
Time Id Command Argument
2020-07-29T08:13:20.369741Z 12 Query SHOW VARIABLES LIKE '%general%'
2020-07-29T08:13:53.012741Z 12 Query set sql_log_off=off
2020-07-29T08:14:34.588074Z 12 Query SELECT DATABASE()
2020-07-29T08:14:34.588428Z 12 Init DB dbcy
2020-07-29T08:14:34.590030Z 12 Query show databases
2020-07-29T08:14:34.591415Z 12 Query show tables
2020-07-29T08:14:34.593232Z 12 Field List t1
2020-07-29T08:14:34.593605Z 12 Field List t2
2020-07-29T08:14:34.593938Z 12 Field List tb_cylog
2020-07-29T08:14:34.594398Z 12 Field List tb_notice
2020-07-29T08:14:34.594716Z 12 Field List v_cylog
2020-07-29T08:14:36.102065Z 12 Query insert into t1 values(6,'大惊小怪')
mysql> select * from t1;
+-----+--------------+
| tid | tname |
+-----+--------------+
| 2 | 狗十三 |
| 4 | 大猪蹄子 |
| 5 | 呢呢 |
| 6 | 大惊小怪 |
| 17 | 赵二 |
| 18 | 张三 |
| 19 | 李四 |
| 20 | 王五 |
+-----+--------------+
8 rows in set (0.00 sec)
mysql> system more /home/mysql8/data/chengyu.log;
/usr/local/mysql8/bin/mysqld, Version: 8.0.20 (Source distribution). started with:
Tcp port: 3307 Unix socket: /usr/local/mysql8/mysql.sock
Time Id Command Argument
2020-07-29T08:13:20.369741Z 12 Query SHOW VARIABLES LIKE '%general%'
2020-07-29T08:13:53.012741Z 12 Query set sql_log_off=off
2020-07-29T08:14:34.588074Z 12 Query SELECT DATABASE()
2020-07-29T08:14:34.588428Z 12 Init DB dbcy
2020-07-29T08:14:34.590030Z 12 Query show databases
2020-07-29T08:14:34.591415Z 12 Query show tables
2020-07-29T08:14:34.593232Z 12 Field List t1
2020-07-29T08:14:34.593605Z 12 Field List t2
2020-07-29T08:14:34.593938Z 12 Field List tb_cylog
2020-07-29T08:14:34.594398Z 12 Field List tb_notice
2020-07-29T08:14:34.594716Z 12 Field List v_cylog
2020-07-29T08:14:36.102065Z 12 Query insert into t1 values(6,'大惊小怪')
2020-07-29T08:15:29.346946Z 12 Query select * from t1
--开启sql_log_off
mysql> set sql_log_off=on;
Query OK, 0 rows affected (0.00 sec)
mysql> insert into t1 values(7,'杯子');
Query OK, 1 row affected (0.07 sec)
mysql> system more /home/mysql8/data/chengyu.log;
/usr/local/mysql8/bin/mysqld, Version: 8.0.20 (Source distribution). started with:
Tcp port: 3307 Unix socket: /usr/local/mysql8/mysql.sock
Time Id Command Argument
2020-07-29T08:13:20.369741Z 12 Query SHOW VARIABLES LIKE '%general%'
2020-07-29T08:13:53.012741Z 12 Query set sql_log_off=off
2020-07-29T08:14:34.588074Z 12 Query SELECT DATABASE()
2020-07-29T08:14:34.588428Z 12 Init DB dbcy
2020-07-29T08:14:34.590030Z 12 Query show databases
2020-07-29T08:14:34.591415Z 12 Query show tables
2020-07-29T08:14:34.593232Z 12 Field List t1
2020-07-29T08:14:34.593605Z 12 Field List t2
2020-07-29T08:14:34.593938Z 12 Field List tb_cylog
2020-07-29T08:14:34.594398Z 12 Field List tb_notice
2020-07-29T08:14:34.594716Z 12 Field List v_cylog
2020-07-29T08:14:36.102065Z 12 Query insert into t1 values(6,'大惊小怪')
2020-07-29T08:15:29.346946Z 12 Query select * from t1
2020-07-29T08:15:43.911204Z 12 Query set sql_log_off=on
4. 通用查询日志删除
FLUSH GENERAL LOGS：关闭并重新打开服务器正在写入的任何常规查询日志文件。
mysql> system more /home/mysql8/data/chengyu.log;
/usr/local/mysql8/bin/mysqld, Version: 8.0.20 (Source distribution). started with:
Tcp port: 3307 Unix socket: /usr/local/mysql8/mysql.sock
Time Id Command Argument
2020-07-29T08:13:20.369741Z 12 Query SHOW VARIABLES LIKE '%general%'
2020-07-29T08:13:53.012741Z 12 Query set sql_log_off=off
2020-07-29T08:14:34.588074Z 12 Query SELECT DATABASE()
2020-07-29T08:14:34.588428Z 12 Init DB dbcy
2020-07-29T08:14:34.590030Z 12 Query show databases
2020-07-29T08:14:34.591415Z 12 Query show tables
2020-07-29T08:14:34.593232Z 12 Field List t1
2020-07-29T08:14:34.593605Z 12 Field List t2
2020-07-29T08:14:34.593938Z 12 Field List tb_cylog
2020-07-29T08:14:34.594398Z 12 Field List tb_notice
2020-07-29T08:14:34.594716Z 12 Field List v_cylog
2020-07-29T08:14:36.102065Z 12 Query insert into t1 values(6,'大惊小怪')
2020-07-29T08:15:29.346946Z 12 Query select * from t1
2020-07-29T08:15:43.911204Z 12 Query set sql_log_off=on
mysql> FLUSH GENERAL LOGS;
Query OK, 0 rows affected (0.04 sec)
mysql> system more /home/mysql8/data/chengyu.log;
/usr/local/mysql8/bin/mysqld, Version: 8.0.20 (Source distribution). started with:
Tcp port: 3307 Unix socket: /usr/local/mysql8/mysql.sock
Time Id Command Argument
2020-07-29T08:13:20.369741Z 12 Query SHOW VARIABLES LIKE '%general%'
2020-07-29T08:13:53.012741Z 12 Query set sql_log_off=off
2020-07-29T08:14:34.588074Z 12 Query SELECT DATABASE()
2020-07-29T08:14:34.588428Z 12 Init DB dbcy
2020-07-29T08:14:34.590030Z 12 Query show databases
2020-07-29T08:14:34.591415Z 12 Query show tables
2020-07-29T08:14:34.593232Z 12 Field List t1
2020-07-29T08:14:34.593605Z 12 Field List t2
2020-07-29T08:14:34.593938Z 12 Field List tb_cylog
2020-07-29T08:14:34.594398Z 12 Field List tb_notice
2020-07-29T08:14:34.594716Z 12 Field List v_cylog
2020-07-29T08:14:36.102065Z 12 Query insert into t1 values(6,'大惊小怪')
2020-07-29T08:15:29.346946Z 12 Query select * from t1
2020-07-29T08:15:43.911204Z 12 Query set sql_log_off=on
/usr/local/mysql8/bin/mysqld, Version: 8.0.20 (Source distribution). started with:
Tcp port: 3307 Unix socket: /usr/local/mysql8/mysql.sock
Time Id Command Argument
或者通过mysqladmin删除通用查询日志：
[root@chengyu ~]# mysqladmin -uroot -p flush-logs
mysql> insert into t1 values(8,'出门三');
Query OK, 1 row affected (0.07 sec)
mysql> system more /home/mysql8/data/chengyu.log;
/usr/local/mysql8/bin/mysqld, Version: 8.0.20 (Source distribution). started with:
Tcp port: 3307 Unix socket: /usr/local/mysql8/mysql.sock
Time Id Command Argument
2020-07-29T08:13:20.369741Z 12 Query SHOW VARIABLES LIKE '%general%'
2020-07-29T08:13:53.012741Z 12 Query set sql_log_off=off
2020-07-29T08:14:34.588074Z 12 Query SELECT DATABASE()
2020-07-29T08:14:34.588428Z 12 Init DB dbcy
2020-07-29T08:14:34.590030Z 12 Query show databases
2020-07-29T08:14:34.591415Z 12 Query show tables
2020-07-29T08:14:34.593232Z 12 Field List t1
2020-07-29T08:14:34.593605Z 12 Field List t2
2020-07-29T08:14:34.593938Z 12 Field List tb_cylog
2020-07-29T08:14:34.594398Z 12 Field List tb_notice
2020-07-29T08:14:34.594716Z 12 Field List v_cylog
2020-07-29T08:14:36.102065Z 12 Query insert into t1 values(6,'大惊小怪')
2020-07-29T08:15:29.346946Z 12 Query select * from t1
2020-07-29T08:15:43.911204Z 12 Query set sql_log_off=on
/usr/local/mysql8/bin/mysqld, Version: 8.0.20 (Source distribution). started with:
Tcp port: 3307 Unix socket: /usr/local/mysql8/mysql.sock
Time Id Command Argument
2020-07-29T08:22:26.527288Z 12 Query set global general_log=off
/usr/local/mysql8/bin/mysqld, Version: 8.0.20 (Source distribution). started with:
Tcp port: 3307 Unix socket: /usr/local/mysql8/mysql.sock
Time Id Command Argument
2020-07-29T08:24:27.587199Z 13 Query SHOW VARIABLES LIKE '%general%'
2020-07-29T08:24:49.234511Z 13 Query SELECT DATABASE()
2020-07-29T08:24:49.234871Z 13 Init DB dbcy
2020-07-29T08:24:49.236429Z 13 Query show databases
2020-07-29T08:24:49.237818Z 13 Query show tables
2020-07-29T08:24:49.239570Z 13 Field List t1
2020-07-29T08:24:49.239946Z 13 Field List t2
2020-07-29T08:24:49.240280Z 13 Field List tb_cylog
2020-07-29T08:24:49.240779Z 13 Field List tb_notice
2020-07-29T08:24:49.241153Z 13 Field List v_cylog
2020-07-29T08:24:50.861526Z 13 Query insert into t1 values(8,'出门三')
mysql> exit
[root@chengyu ~]# mysqladmin -uroot -p flush-logs
Enter password:
mysql> system more /home/mysql8/data/chengyu.log;
/usr/local/mysql8/bin/mysqld, Version: 8.0.20 (Source distribution). started with:
Tcp port: 3307 Unix socket: /usr/local/mysql8/mysql.sock
Time Id Command Argument
2020-07-29T08:13:20.369741Z 12 Query SHOW VARIABLES LIKE '%general%'
2020-07-29T08:13:53.012741Z 12 Query set sql_log_off=off
2020-07-29T08:14:34.588074Z 12 Query SELECT DATABASE()
2020-07-29T08:14:34.588428Z 12 Init DB dbcy
2020-07-29T08:14:34.590030Z 12 Query show databases
2020-07-29T08:14:34.591415Z 12 Query show tables
2020-07-29T08:14:34.593232Z 12 Field List t1
2020-07-29T08:14:34.593605Z 12 Field List t2
2020-07-29T08:14:34.593938Z 12 Field List tb_cylog
2020-07-29T08:14:34.594398Z 12 Field List tb_notice
2020-07-29T08:14:34.594716Z 12 Field List v_cylog
2020-07-29T08:14:36.102065Z 12 Query insert into t1 values(6,'大惊小怪')
2020-07-29T08:15:29.346946Z 12 Query select * from t1
2020-07-29T08:15:43.911204Z 12 Query set sql_log_off=on
/usr/local/mysql8/bin/mysqld, Version: 8.0.20 (Source distribution). started with:
Tcp port: 3307 Unix socket: /usr/local/mysql8/mysql.sock
Time Id Command Argument
2020-07-29T08:22:26.527288Z 12 Query set global general_log=off
/usr/local/mysql8/bin/mysqld, Version: 8.0.20 (Source distribution). started with:
Tcp port: 3307 Unix socket: /usr/local/mysql8/mysql.sock
Time Id Command Argument
2020-07-29T08:24:27.587199Z 13 Query SHOW VARIABLES LIKE '%general%'
2020-07-29T08:24:49.234511Z 13 Query SELECT DATABASE()
2020-07-29T08:24:49.234871Z 13 Init DB dbcy
2020-07-29T08:24:49.236429Z 13 Query show databases
2020-07-29T08:24:49.237818Z 13 Query show tables
2020-07-29T08:24:49.239570Z 13 Field List t1
2020-07-29T08:24:49.239946Z 13 Field List t2
2020-07-29T08:24:49.240280Z 13 Field List tb_cylog
2020-07-29T08:24:49.240779Z 13 Field List tb_notice
2020-07-29T08:24:49.241153Z 13 Field List v_cylog
2020-07-29T08:24:50.861526Z 13 Query insert into t1 values(8,'出门三')
2020-07-29T08:25:05.155210Z 13 Quit
2020-07-29T08:25:16.047718Z 14 Connect root@localhost on using Socket
2020-07-29T08:25:16.048069Z 14 Query FLUSH LOGS
/usr/local/mysql8/bin/mysqld, Version: 8.0.20 (Source distribution). started with:
Tcp port: 3307 Unix socket: /usr/local/mysql8/mysql.sock
Time Id Command Argument
2020-07-29T08:25:16.232538Z 14 Quit
2020-07-29T08:25:23.446874Z 15 Connect root@localhost on using Socket
2020-07-29T08:25:23.447317Z 15 Query select @@version_comment limit 1
2020年07月29日
还能流眼泪说明还年轻…