MySQL5.7参数log_timestamps分分快三全天计划网站

作者:分分快三全天计划网站

近日测量试验MySQL 5.7.21  Community Server那么些版本的MySQL数据库时,发掘其荒诞日志的小时跟系统当下时光不雷同,前边防检查查开掘日期时间格式都以UTC时间,查了一下相关资料,原本在MySQL 5.7.2 之前几天志文件之中的日子戳从暗中认可的本土系统时区改为了UTC格式。MySQL 5.7.2多了三个参数log_timestamps ,那些参数首假如调整不当日志、慢查询日志等日志中的呈现时间。但它不会潜移暗化查询日志和慢日志写到表 (mysql.general_log, mysql.slow_log) 中的显示时间。在询问记录的时候,能够行使 CONVERT_TZ() 函数,恐怕设置会话级其余系统变量 time_zone 来转变到所急需的时区。官方材料详实介绍如下所示:

[root@bogon data]# /etc/init.d/mysqld start
Starting MySQL.... SUCCESS! 
You have new mail in /var/spool/mail/root
[root@bogon data]# tailf error.log 
2017-01-01T06:49:38.202954Z 0 [Note] InnoDB: Loading buffer pool(s) from /data/mysql/mysql3306/data/ib_buffer_pool
2017-01-01T06:49:38.440257Z 0 [Warning] Failed to set up SSL because of the following SSL library error: SSL context is not usable without certificate and private key
2017-01-01T06:49:38.440314Z 0 [Note] Server hostname (bind-address): '*'; port: 3306
2017-01-01T06:49:38.440426Z 0 [Note] IPv6 is available.
2017-01-01T06:49:38.440443Z 0 [Note] - '::' resolves to '::';
2017-01-01T06:49:38.440471Z 0 [Note] Server socket created on IP: '::'.
2017-01-01T06:49:38.627893Z 0 [Note] InnoDB: Buffer pool(s) load completed at 161116 14:49:38
2017-01-01T06:49:38.871533Z 0 [Note] Event Scheduler: Loaded 0 events
2017-01-01T06:49:38.871938Z 0 [Note] /usr/local/mysql/bin/mysqld: ready for connections.
Version: '5.7.14-log'socket: '/tmp/mysql3306.sock'port: 3306MySQL Community Server (GPL)

ALTER USER 'root'@'localhost' PASSWORD EXPIRE NEVER;

This variable controls the time zone of timestamps in messages written to the error log, and in general query log and slow query log messages written to files. It does not affect the time zone of general query log and slow query log messages written to tables(mysql.general_log, mysql.slow_log). Rows retrieved from those tables can be converted from the local system time zone to any desired time zone with CONVERT_TZ() or by setting the session time_zone system variable.

log_timestamps
Introduced 5.7.2
Command-Line Format --log_timestamps=#
System Variable Name log_timestamps
Variable Scope Global
Dynamic Variable Yes
Permitted Values Type enumeration
Default UTC
Valid Values UTC
SYSTEM
This variable controls the timestamp time zone of error log messages, and of general query log and slow query log messages written to files. It does not affect the time zone of general query log and slow query log messages written to tables (mysql.general_log, mysql.slow_log). Rows retrieved from those tables can be converted from the local system time zone to any desired time zone with CONVERT_TZ() or by setting the session time_zone system variable.
Permitted log_timestamps values are UTC (the default) and SYSTEM (local system time zone).
Timestamps are written using ISO 8601 / RFC 3339 format: YYYY-MM-DDThh:mm:ss.uuuuuu plus a tail value of Z signifying Zulu time (UTC) or ±hh:mm (an offset from UTC).
This variable was added in MySQL 5.7.2. Before 5.7.2, timestamps in log messages were written using the local system time zone by default, not UTC. If you want the previous log message time zone default, set log_timestamps=SYSTEM. 

mysql> update user set authentication_string=password('123333') where user='root';

近年有两三套情况提高到了5.7.16,开采mysql.err中的时间接近有个别难点,经查是mysql 5.7后的退换,如下:

SHOW GLOBAL VARIABLES LIKE 'log_timestamps';

This variable was added in MySQL 5.7.2. Before 5.7.2, timestamps in log messages were written using the local system time zone by default, not UTC. If you want the previous log message time zone default, set log_timestamps=SYSTEM.

消释办法:

 

 

日志呈现时间

| log_timestamps | SYSTEM |

 

难点原因:

port = 3306

 

 

    drop  ...        101    2013-07-23 20:57:00

仿照效法资料:

root@localhost [(none)]>SHOW GLOBAL VARIABLES LIKE 'log_timestamps';
ERROR 2006 (HY000): MySQL server has gone away
No connection. Trying to reconnect...
Connection id:3
Current database: *** NONE ***
---------------- -------
| Variable_name| Value |
---------------- -------
| log_timestamps | UTC |
---------------- -------
1 row in set (0.01 sec)
root@localhost [(none)]>set global log_timestamps=SYSTEM;
Query OK, 0 rows affected (0.00 sec)
root@localhost [(none)]>SHOW GLOBAL VARIABLES LIKE 'log_timestamps';
---------------- --------
| Variable_name| Value|
---------------- --------
| log_timestamps | SYSTEM |
---------------- --------
1 row in set (0.00 sec) 

举个例子说 大家把一个表个drop 了 那么大家只要把表复苏到 drop在此之前就好了

 

本条参数是5.7.2推荐介绍来的,主要决定记录日志的年华戳(得加到默许配置中了卡塔尔国,不影响general log和slow log写表。

 

 

root@localhost [(none)]>select now();
---------------------
| now() |
---------------------
| 2017-01-01 14:52:05 |
---------------------
1 row in set (0.00 sec) 

 

 

它的暗中认可设置是UTC,倘诺您想纠正暗许设置,set log_timestamps=SYSTEM就可以了。注意那几个变量的效能域是global

---------------- --------

 

 

  1. 运转服务

Permitted log_timestamps values are UTC (the default) and SYSTEM (local system time zone).

 

此参数是大局的,可以动态更正,修改参数log_timestamps的值极度轻巧,如下所示,但是最佳在参数文件my.cnf设置该参数值,以免MySQL服务重启失效。

 

Timestamps are written using ISO 8601 / RFC 3339 format: YYYY-MM-DDThh:mm:ss.uuuuuu plus a tail value of Z signifying Zulu time (UTC) or ±hh:mm (an offset from UTC).

数据库时差 相差8钟头

mysql> show variables like 'log_timestamps';

 ---------------- ------- 

| Variable_name  | Value |

 ---------------- ------- 

| log_timestamps | UTC   |

 ---------------- ------- 

1 row in set (0.01 sec)

 

mysql> set global log_timestamps=system;

Query OK, 0 rows affected (0.00 sec)

 

mysql> show variables like 'log_timestamps';

 ---------------- -------- 

| Variable_name  | Value  |

 ---------------- -------- 

| log_timestamps | SYSTEM |

 ---------------- -------- 

1 row in set (0.01 sec)

 

mysql>

vim /etc/my.cnf //编辑也许涂改

分分快三全天计划网站 1

mkdir -p /data/mysql

 

datadir=/data/mysql

./bin/mysql_ssl_rsa_setup --datadir=/data/mysql

  1. 拷贝配置文件和起步脚本

cp support-files/my-default.cnf  /etc/my.cnf 

 

 

 

basedir = /usr/local/mysql

 

 

重启 /etc/init.d/mysqld restart

 

useradd -M -s /sbin/nologin  mysql

mysqlbinlog --start-position=4 --stop-position=106 yueliangd

socket = /tmp/mysql.sock

  1. 解压

能够调节从如曾几何时候起初 到何以是落成

当心,这一步最终大器晚成行会有二个唤起

 

重启  /etc/init.d/mysqld restart

/etc/init.d/mysqld start

SET PASSWORD = PASSWORD('HycK@12345.CoM');

增量备份

最终面包车型客车字符串为root密码。

flush privileges;

 

mysqlbinlog  --stop-position=4590 e:/mysqldb/logbin.000001  | mysql -uroot -p

 

basedir=/usr/local/mysql

---------------- --------

根据时间回复

 

        mysqlbinlog  --stop-position="100" e:/mysqldb/logbin.000001  |

| Variable_name  | Value  |

mysql 对于你的每叁遍操作 都会记录叁次时间 同不常间 给您分配一个职责 (pos卡塔 尔(英语:State of Qatar)

 

 

 

 

        上面那一个讲话意思是 恢复生机到100的职位

 

    logbin.000001

cd /usr/local/mysql

换句话说 未来我们回复 可以依附时间点来过来 只怕依据岗位来复苏

 

SHOW GLOBAL VARIABLES LIKE 'log_timestamps';

 

vi /etc/init.d/mysqld   //编辑可能涂改

Query OK, 0 rows affected (0.00 sec)

 

运用开头化密码登入

 

退出去后,改正my.cnf,去掉刚加的 skip-grant-tables

| log_timestamps | UTC    |

[Note] A temporary password is generated for root@localhost: B*s1i(*,kXwg    llRhYDpFa6>8    //jHxl,!<3iQ

    update .....   4    2013-07-23 17:59:00

    上边那句的意趣是 从2011-07-23 20:50:00  初阶回涨

 

 

---------------- --------

  1. 初始化

 

/usr/local/mysql/bin/mysql -uroot -p'B*s1i(*,kXwg'  //步向后从来设置密码

    insert ......   3       2013-07-23 17:57:00

根据岗位来回复

 

| Variable_name  | Value  |

ao_binglog.000001 > c:\test1.txt

cp support-files/mysql.server /etc/init.d/mysqld

 

 

在 5.7.2 之后改参数为默许 UTC 那样会导致日志中记录的日子比中华夏族民共和国那边的慢,导致查看日志不便于。改良为 SYSTEM 就能够灭亡难点

---------------- --------

mv  mysql-5.7.12-linux-glibc2.5-x86_64  /usr/local/mysql

vi /etc/my.cnf

mysql>set password = password('mypass');   //应当要安装一下新密码

./bin/mysqld  --initialize --user=mysql --datadir=/data/mysql

岁月点过来

退出去,再利用新的密码登陆就能够了

  1. 设置root密码

在[mysqld]上面扩充生龙活虎行

 

 

     mysqlbinlog  --start-datatime="2013-07-23 20:50:00" e:/mysqldb/logbin.000001

在MySQL 5.7.2 新增了 log_timestamps 那几个参数,该参数首假若调整 error log、genera log,等等记录日志的突显时间参数。

 

 

    上边那句的情致是 一贯苏醒到 二〇一三-07-23 20:50:00  停止

    复苏的话能够如此写

This variable was added in MySQL 5.7.2. Before 5.7.2, timestamps in log messages were written using the local system time zone by default, not UTC. If you want the previous log message time zone default, set log_timestamps=SYSTEM.

 

SET GLOBAL log_timestamps = SYSTEM;

 

 

     insert ......   100       2013-07-23 19:57:00

datadir = /data/mysql

    mysqlbinlog  --stop-datatime="2013-07-23 20:50:00" e:/mysqldb/logbin.000001

那时候就足以采纳新的密码了。

tar  xxvf mysql-5.7.12-linux-glibc2.5-x86_64.tar.gz

或者

chown mysql /data/mysql

实际复苏

再有意气风发种情况,正是不掌握最早化密码

/usr/local/mysql/bin/mysql -uroot

    大家得以画个流程图

---------------- --------

  1. 下载包

官方网站原话:

mysqlbinlog e:/mysqldb/logbin.000001

 

 

 

skip-grant-tables

mysqlbinlog  --stop-datetime="2013-07-24 18:17:19" e:/mysqldb/logbin.000001  | mysql -uroot -p

 

wget   

依照职位复苏

 

---------------- --------

 

本文由分分快三计划发布,转载请注明来源

关键词: 分分快三计划 mysql linux方面的