mysql數(shù)據(jù)庫(kù)備份設(shè)置延時(shí)備份方法(mysql主從配置)

更新時(shí)間：2013年12月12日 10:24:00 作者：

這篇文章主要介紹了mysql數(shù)據(jù)庫(kù)延時(shí)備份的方法，也就是mysql主從服務(wù)器備份，可以同步到多個(gè)服務(wù)器，最后我們提供了一個(gè)備份腳本，大家參考使用吧

一為什么需要延時(shí)備份

percona-xtrabackup是一個(gè)優(yōu)秀的用于增量備份的工具。今天我們講到的延時(shí)備份也是使用他們的產(chǎn)品。
以前在MySQL AB復(fù)制一文中提到了AB復(fù)制。我們首先回顧下MySQL復(fù)制的相關(guān)要點(diǎn)。AB復(fù)制又稱主從復(fù)制，實(shí)現(xiàn)的是數(shù)據(jù)同步。經(jīng)過以下步驟：

1)主服務(wù)器把數(shù)據(jù)更改記錄到二進(jìn)制日志中，這個(gè)操作叫做二進(jìn)制日志事件；

2)從服務(wù)器把主服務(wù)器的二進(jìn)制日志事件拷貝到自己的中繼日志（relay log）中；

3)從服務(wù)器執(zhí)行中繼日志中的事件，把更改應(yīng)用到自己的數(shù)據(jù)上。

在生產(chǎn)中，我們?cè)谑褂?mysql AB 復(fù)制技術(shù)不但可以起到數(shù)據(jù)庫(kù)層面負(fù)載均衡的能力，還可以起到備份數(shù)據(jù)的功能，但有的時(shí)候我們可能由于不小心誤操作導(dǎo)致數(shù)據(jù)被刪除，這這個(gè)時(shí)候 slave服務(wù)器上的數(shù)據(jù)也會(huì)同時(shí)被刪除，如果我們能夠能是的其中的一臺(tái) slave 延時(shí)備份的話，這樣就可以從 slave服務(wù)器上找回被誤刪的數(shù)據(jù)了。
從服務(wù)器到主服務(wù)器中拷貝二進(jìn)制日志文件，如果在并發(fā)量高，網(wǎng)絡(luò)延時(shí)嚴(yán)重的情況下，會(huì)對(duì)主服務(wù)器造成相當(dāng)大的壓力，負(fù)載高，必定會(huì)出現(xiàn)很多問題，比如訪問延遲，IO瓶頸，網(wǎng)絡(luò)擁塞等等。服務(wù)器壓力過大是我們都不愿看到的情況，那有沒有方案緩解這種情況呢？有，這就是本文講到的延時(shí)備份。延時(shí)備份通過第三方工具，將檢查同步和真正同步的時(shí)間控制在一定的范圍內(nèi)，而不是主服務(wù)器數(shù)據(jù)發(fā)生變化，從服務(wù)器立即去同步二進(jìn)制事件到自己的中繼日志中，這樣的話可以大大減輕主服務(wù)器的壓力，并且基于AB復(fù)制的優(yōu)點(diǎn)，可以達(dá)到備份數(shù)據(jù)的目的。

環(huán)境簡(jiǎn)介

serv01：主服務(wù)器 192.168.1.11serv01.host.com

serv08：及時(shí)同步服務(wù)器 192.168.1.18serv01.host.com

serv09：延時(shí)同步服務(wù)器 192.168.1.19serv08.host.com

操作系統(tǒng)版本

RHEL Server6.1 64位系統(tǒng)

使用到的軟件包版本

mysql-5.5.29-linux2.6-x86_64.tar.gz

percona-toolkit-2.1.7-1.noarch.rpm

第一步，搭建環(huán)境。修改配置文件，注意每臺(tái)的server-id不一致；

復(fù)制代碼代碼如下:

[root@serv01 ~]# cat /etc/my.cnf | grep server-id
server-id = 1
#server-id       = 2
[root@serv01 ~]# /etc/init.d/mysqld start
Starting MySQL SUCCESS! 

[root@serv08 ~]# cat /etc/my.cnf | grep server-id
server-id = 2
#server-id       = 2
[root@serv08 ~]# /etc/init.d/mysqld start
Starting MySQL SUCCESS! 

[root@serv09 ~]# cat /etc/my.cnf | grep server-id
server-id = 3
#server-id       = 2
[root@serv09 ~]# /etc/init.d/mysqld start
Starting MySQL SUCCESS! 

第二步，serv01serv08 serv09清空日志

復(fù)制代碼代碼如下:

serv01
mysql> show binary logs;
+------------------+-----------+
| Log_name         | File_size |
+------------------+-----------+
| mysql-bin.000001 |       683 |
+------------------+-----------+
1 row in set (0.01 sec)

mysql> reset master;
Query OK, 0 rows affected (0.01 sec)

mysql> show binary logs;
+------------------+-----------+
| Log_name         | File_size |
+------------------+-----------+
| mysql-bin.000001 |       107 |
+------------------+-----------+
1 row in set (0.00 sec)

serv08
mysql> reset master;
Query OK, 0 rows affected (0.02 sec)

mysql> show binary logs;
+------------------+-----------+
| Log_name         | File_size |
+------------------+-----------+
| mysql-bin.000001 |       107 |
+------------------+-----------+
1 row in set (0.00 sec)

serv09
mysql> show binary logs;
+------------------+-----------+
| Log_name         | File_size |
+------------------+-----------+
| mysql-bin.000001 |       107 |
+------------------+-----------+
1 row in set (0.00 sec)

mysql> reset master;
Query OK, 0 rows affected (0.00 sec)

mysql> show binary logs;
+------------------+-----------+
| Log_name         | File_size |
+------------------+-----------+
| mysql-bin.000001 |       107 |
+------------------+-----------+
1 row in set (0.00 sec)

第三步，主服務(wù)器serv01創(chuàng)建授權(quán)用戶

復(fù)制代碼代碼如下:

mysql> grant replication client, replication slave on *.* to 'larry'@'192.168.1.%' identified by 'larry';

第四步，serv08修改master設(shè)置，開啟slave，查看slave狀態(tài)

復(fù)制代碼代碼如下:

mysql> change master to
    -> master_host='192.168.1.11',
    -> master_user='larry',
    -> master_password='larry',
    -> master_port=3306,
    -> master_log_file='mysql-bin.000001',
    -> master_log_pos=107;
Query OK, 0 rows affected (0.03 sec)

mysql> start slave;
Query OK, 0 rows affected (0.00 sec)

mysql> show slave status G;
*************************** 1. row ***************************
               Slave_IO_State: Waiting for master to send event
                  Master_Host: 192.168.1.11
                  Master_User: larry
                  Master_Port: 3306
                Connect_Retry: 60
              Master_Log_File: mysql-bin.000001
          Read_Master_Log_Pos: 107
               Relay_Log_File: serv08-relay-bin.000002
                Relay_Log_Pos: 253
        Relay_Master_Log_File: mysql-bin.000001
             Slave_IO_Running: Yes
            Slave_SQL_Running: Yes
              Replicate_Do_DB: 
          Replicate_Ignore_DB: 
           Replicate_Do_Table: 
       Replicate_Ignore_Table: 
      Replicate_Wild_Do_Table: 
  Replicate_Wild_Ignore_Table: 
                   Last_Errno: 0
                   Last_Error: 
                 Skip_Counter: 0
          Exec_Master_Log_Pos: 107
              Relay_Log_Space: 410
              Until_Condition: None
               Until_Log_File: 
                Until_Log_Pos: 0
           Master_SSL_Allowed: No
           Master_SSL_CA_File: 
           Master_SSL_CA_Path: 
              Master_SSL_Cert: 
            Master_SSL_Cipher: 
               Master_SSL_Key: 
        Seconds_Behind_Master: 0
Master_SSL_Verify_Server_Cert: No
                Last_IO_Errno: 0
                Last_IO_Error: 
               Last_SQL_Errno: 0
               Last_SQL_Error: 
  Replicate_Ignore_Server_Ids: 
             Master_Server_Id: 1
1 row in set (0.00 sec)

ERROR: 
No query specified

第五步，serv09延時(shí)服務(wù)器修改master狀態(tài)，開啟slave，查看slave狀態(tài)

復(fù)制代碼代碼如下:

mysql> change master to master_host='192.168.1.11', master_user='larry', master_password='larry', master_port=3306, master_log_file='mysql-bin.000001', master_log_pos=107;
Query OK, 0 rows affected (0.02 sec)

mysql> start slave;
Query OK, 0 rows affected (0.01 sec)

mysql> show slave status G;
*************************** 1. row ***************************
               Slave_IO_State: Waiting for master to send event
                  Master_Host: 192.168.1.11
                  Master_User: larry
                  Master_Port: 3306
                Connect_Retry: 60
              Master_Log_File: mysql-bin.000001
          Read_Master_Log_Pos: 107
               Relay_Log_File: serv09-relay-bin.000002
                Relay_Log_Pos: 253
        Relay_Master_Log_File: mysql-bin.000001
             Slave_IO_Running: Yes
            Slave_SQL_Running: Yes
              Replicate_Do_DB: 
          Replicate_Ignore_DB: 
           Replicate_Do_Table: 
       Replicate_Ignore_Table: 
      Replicate_Wild_Do_Table: 
  Replicate_Wild_Ignore_Table: 
                   Last_Errno: 0
                   Last_Error: 
                 Skip_Counter: 0
          Exec_Master_Log_Pos: 107
              Relay_Log_Space: 410
              Until_Condition: None
               Until_Log_File: 
                Until_Log_Pos: 0
           Master_SSL_Allowed: No
           Master_SSL_CA_File: 
           Master_SSL_CA_Path: 
              Master_SSL_Cert: 
            Master_SSL_Cipher: 
               Master_SSL_Key: 
        Seconds_Behind_Master: 0
Master_SSL_Verify_Server_Cert: No
                Last_IO_Errno: 0
                Last_IO_Error: 
               Last_SQL_Errno: 0
               Last_SQL_Error: 
  Replicate_Ignore_Server_Ids: 
             Master_Server_Id: 1
1 row in set (0.00 sec)

ERROR: 
No query specified

第六步，在沒有使用延時(shí)服務(wù)器時(shí)，serv01創(chuàng)建測(cè)試數(shù)據(jù)庫(kù)，可以看到同步服務(wù)器serv08和延時(shí)服務(wù)器serv09已經(jīng)同步了

復(fù)制代碼代碼如下:

serv01
mysql> create database justdb;
Query OK, 1 row affected (0.01 sec)

mysql> show databases;
+--------------------+
| Database           |
+--------------------+
| information_schema |
| crm                |
| justdb             |
| larry              |
| larrydb            |
| mysql              |
| performance_schema |
| test               |
+--------------------+
8 rows in set (0.00 sec)

serv08
mysql> show databases;
+--------------------+
| Database           |
+--------------------+
| information_schema |
| justdb             |
| larrydb            |
| mysql              |
| performance_schema |
| test               |
+--------------------+
6 rows in set (0.03 sec)

serv09
mysql> show databases;
+--------------------+
| Database           |
+--------------------+
| information_schema |
| justdb             |
| larry              |
| larrydb            |
| mysql              |
| performance_schema |
| test               |
+--------------------+
7 rows in set (0.00 sec)

第七步，拷貝percona-toolkit-2.1.7-1.noarch.rpm

復(fù)制代碼代碼如下:

[root@larrywen ule-mysql]# scp percona-toolkit-2.1.7-1.noarch.rpm 192.168.1.11:/opt
root@192.168.1.11's password: 
percona-toolkit-2.1.7-1.noarch.rpm                       100% 1767KB   1.7MB/s   00:00 

第八步，主服務(wù)器中通過yum安裝percona-toolkit-2.1.7-1.noarch.rpm

復(fù)制代碼代碼如下:

[root@serv01 opt]# yum install percona-toolkit-2.1.7-1.noarch.rpm -y

第九步，使用pt-slave-delay工具進(jìn)行延時(shí)設(shè)置。可以先查看幫助。

復(fù)制代碼代碼如下:

[root@serv01 opt]# pt-slave-delay --help
pt-slave-delay starts and stops a slave server as needed to make it lag behind
the master.  The SLAVE-HOST and MASTER-HOST use DSN syntax, and values are
copied from the SLAVE-HOST to the MASTER-HOST if omitted.  For more details,
please use the --help option, or try 'perldoc /usr/bin/pt-slave-delay' for
complete documentation.

Usage: pt-slave-delay [OPTION...] SLAVE-HOST [MASTER-HOST]

Options:

  --ask-pass            Prompt for a password when connecting to MySQL
  --charset=s       -A  Default character set
  --config=A            Read this comma-separated list of config files; if
                        specified, this must be the first option on the command
                        line
  --[no]continue        Continue replication normally on exit (default yes)
  --daemonize           Fork to the background and detach from the shell
  --database=s      -D  The database to use for the connection
  --defaults-file=s -F  Only read mysql options from the given file
  --delay=m             How far the slave should lag its master (default 1h).
                        Optional suffix s=seconds, m=minutes, h=hours, d=days;
                        if no suffix, s is used.
  --help                Show help and exit
  --host=s          -h  Connect to host
  --interval=m          How frequently pt-slave-delay should check whether the
                        slave needs to be started or stopped (default 1m).
                        Optional suffix s=seconds, m=minutes, h=hours, d=days;
                        if no suffix, s is used.
  --log=s               Print all output to this file when daemonized
  --password=s      -p  Password to use when connecting
  --pid=s               Create the given PID file when daemonized
  --port=i          -P  Port number to use for connection
  --quiet           -q  Don't print informational messages about operation
  --run-time=m          How long pt-slave-delay should run before exiting.
                        Optional suffix s=seconds, m=minutes, h=hours, d=days;
                        if no suffix, s is used.
  --set-vars=s          Set these MySQL variables (default wait_timeout=10000)
  --socket=s        -S  Socket file to use for connection
  --use-master          Get binlog positions from master, not slave
  --user=s          -u  User for login if not current user
  --version             Show version and exit
  --version-check=s     Send program versions to Percona and print suggested
                        upgrades and problems (default off)

Option types: s=string, i=integer, f=float, h/H/a/A=comma-separated list, d=DSN, z=size, m=time

Rules:

  This tool accepts additional command-line arguments. Refer to the SYNOPSIS and usage information for details.

DSN syntax is key=value[,key=value...]  Allowable DSN keys:

  KEY  COPY  MEANING
  ===  ====  =============================================
  A    yes   Default character set
  D    yes   Default database
  F    yes   Only read default options from the given file
  P    yes   Port number to use for connection
  S    yes   Socket file to use for connection
  h    yes   Connect to host
  p    yes   Password to use when connecting
  u    yes   User for login if not current user

  If the DSN is a bareword, the word is treated as the 'h' key.

Options and values after processing arguments:

  --ask-pass            FALSE
  --charset             (No value)
  --config              /etc/percona-toolkit/percona-toolkit.conf,/etc/percona-toolkit/pt-slave-delay.conf,/root/.percona-toolkit.conf,/root/.pt-slave-delay.conf
  --continue            TRUE
  --daemonize           FALSE
  --database            (No value)
  --defaults-file       (No value)
  --delay               3600
  --help                TRUE
  --host                (No value)
  --interval            60
  --log                 (No value)
  --password            (No value)
  --pid                 (No value)
  --port                (No value)
  --quiet               FALSE
  --run-time            (No value)
  --set-vars            wait_timeout=10000
  --socket              (No value)
  --use-master          FALSE
  --user                (No value)
  --version             FALSE
  --version-check       off

第十步，serv09延時(shí)服務(wù)器中創(chuàng)建授權(quán)用戶

復(fù)制代碼代碼如下:

mysql> grant all on *.* to 'rep'@'192.168.1.%' identified by 'larry';
Query OK, 0 rows affected (0.00 sec)

第十一步，實(shí)現(xiàn)功能。

復(fù)制代碼代碼如下:

[root@serv01 ~]# pt-slave-delay --user='rep' --password='larry' --delay=3m --interval=20s --run-time=30m 192.168.1.19
2013-10-06T19:43:30 slave running 0 seconds behind
2013-10-06T19:43:30 STOP SLAVE until 2013-10-06T19:46:30 at master position mysql-bin.000001/199

<strong>命令解釋</strong>
--user='rep'：延時(shí)服務(wù)器中授權(quán)用戶的用戶名，這里設(shè)置為rep
--password='larry'：延時(shí)服務(wù)器中授權(quán)用戶的密碼，這里設(shè)置為larry
--delay=3m：延時(shí)同步的時(shí)間，這里設(shè)置為3分鐘
--interval=20s：檢查同步的時(shí)間，這里設(shè)置為20s
--run-time=30m：pt-slave-delay的運(yùn)行時(shí)間，這里設(shè)置為30分鐘
192.168.1.19：延時(shí)服務(wù)器的IP地址

第十二步，測(cè)試，主服務(wù)器serv01創(chuàng)建測(cè)試數(shù)據(jù)庫(kù)，可以發(fā)現(xiàn)同步服務(wù)器立馬更新，而延時(shí)同步服務(wù)器要等3分鐘之后才更新

復(fù)制代碼代碼如下:

serv01
mysql> use justdb;
Database changed
mysql> create table test(id int);
Query OK, 0 rows affected (0.01 sec)

mysql> insert into test values(1);
Query OK, 1 row affected (0.00 sec)

serv08
  mysql> select * from justdb.test;
+------+
| id   |
+------+
|    1 |
+------+
1 row in set (0.00 sec)

serv09
mysql> select * from justdb.test;
ERROR 1146 (42S02): Table 'justdb.test' doesn't exist

三分鐘過后查看延時(shí)服務(wù)器已經(jīng)同步成功
[root@serv01 ~]# pt-slave-delay --user='rep' --password='larry' --delay=3m --interval=20s --run-time=30m 192.168.1.19
2013-10-06T19:43:30 slave running 0 seconds behind
2013-10-06T19:43:30 STOP SLAVE until 2013-10-06T19:46:30 at master position mysql-bin.000001/199
2013-10-06T19:43:50 slave stopped at master position mysql-bin.000001/199
2013-10-06T19:44:10 slave stopped at master position mysql-bin.000001/199
2013-10-06T19:44:30 slave stopped at master position mysql-bin.000001/492
2013-10-06T19:44:50 slave stopped at master position mysql-bin.000001/492
2013-10-06T19:45:10 slave stopped at master position mysql-bin.000001/492
2013-10-06T19:45:30 slave stopped at master position mysql-bin.000001/492
2013-10-06T19:45:50 slave stopped at master position mysql-bin.000001/492
2013-10-06T19:46:10 slave stopped at master position mysql-bin.000001/492
2013-10-06T19:46:30 no new binlog events
2013-10-06T19:46:50 slave stopped at master position mysql-bin.000001/492
2013-10-06T19:47:10 slave stopped at master position mysql-bin.000001/492
2013-10-06T19:47:30 START SLAVE until master 2013-10-06T19:44:30 mysql-bin.000001/492
2013-10-06T19:47:50 slave running 0 seconds behind
2013-10-06T19:47:50 STOP SLAVE until 2013-10-06T19:50:50 at master position mysql-bin.000001/492
2013-10-06T19:48:10 slave stopped at master position mysql-bin.000001/492
2013-10-06T19:48:30 slave stopped at master position mysql-bin.000001/492
2013-10-06T19:48:50 slave stopped at master position mysql-bin.000001/492
2013-10-06T19:49:10 slave stopped at master position mysql-bin.000001/492
2013-10-06T19:49:30 slave stopped at master position mysql-bin.000001/492
2013-10-06T19:49:50 slave stopped at master position mysql-bin.000001/492
2013-10-06T19:50:10 slave stopped at master position mysql-bin.000001/492
2013-10-06T19:50:30 slave stopped at master position mysql-bin.000001/492
2013-10-06T19:50:50 no new binlog events
2013-10-06T19:51:10 slave stopped at master position mysql-bin.000001/492
2013-10-06T19:51:30 slave stopped at master position mysql-bin.000001/492
2013-10-06T19:51:50 slave stopped at master position mysql-bin.000001/492
2013-10-06T19:52:10 slave stopped at master position mysql-bin.000001/492
2013-10-06T19:52:30 slave stopped at master position mysql-bin.000001/492
2013-10-06T19:52:50 slave stopped at master position mysql-bin.000001/492
2013-10-06T19:53:10 slave stopped at master position mysql-bin.000001/492
2013-10-06T19:53:30 slave stopped at master position mysql-bin.000001/492
2013-10-06T19:53:50 slave stopped at master position mysql-bin.000001/492
2013-10-06T19:54:10 no new binlog events
2013-10-06T19:54:30 slave stopped at master position mysql-bin.000001/492
2013-10-06T19:54:50 slave stopped at master position mysql-bin.000001/492
2013-10-06T19:55:10 slave stopped at master position mysql-bin.000001/492
2013-10-06T19:55:30 slave stopped at master position mysql-bin.000001/492
2013-10-06T19:55:50 slave stopped at master position mysql-bin.000001/492
2013-10-06T19:56:10 slave stopped at master position mysql-bin.000001/492
2013-10-06T19:56:30 slave stopped at master position mysql-bin.000001/492
2013-10-06T19:56:50 slave stopped at master position mysql-bin.000001/492
2013-10-06T19:57:10 slave stopped at master position mysql-bin.000001/492
2013-10-06T19:57:30 no new binlog events
2013-10-06T19:57:50 slave stopped at master position mysql-bin.000001/492
2013-10-06T19:58:10 slave stopped at master position mysql-bin.000001/492
2013-10-06T19:58:30 slave stopped at master position mysql-bin.000001/492
2013-10-06T19:58:50 slave stopped at master position mysql-bin.000001/492
2013-10-06T19:59:10 slave stopped at master position mysql-bin.000001/492
2013-10-06T19:59:30 slave stopped at master position mysql-bin.000001/492
2013-10-06T19:59:50 slave stopped at master position mysql-bin.000001/492
2013-10-06T20:00:10 slave stopped at master position mysql-bin.000001/492
2013-10-06T20:00:30 slave stopped at master position mysql-bin.000001/492
2013-10-06T20:00:50 no new binlog events
2013-10-06T20:01:10 slave stopped at master position mysql-bin.000001/492
2013-10-06T20:01:30 slave stopped at master position mysql-bin.000001/492
2013-10-06T20:01:50 slave stopped at master position mysql-bin.000001/492
2013-10-06T20:02:10 slave stopped at master position mysql-bin.000001/492
2013-10-06T20:02:30 slave stopped at master position mysql-bin.000001/492
2013-10-06T20:02:50 slave stopped at master position mysql-bin.000001/492
2013-10-06T20:03:10 slave stopped at master position mysql-bin.000001/492
2013-10-06T20:03:30 slave stopped at master position mysql-bin.000001/492
2013-10-06T20:03:50 slave stopped at master position mysql-bin.000001/492
2013-10-06T20:04:10 no new binlog events
2013-10-06T20:04:30 slave stopped at master position mysql-bin.000001/492
2013-10-06T20:04:50 slave stopped at master position mysql-bin.000001/492
2013-10-06T20:05:10 slave stopped at master position mysql-bin.000001/492
2013-10-06T20:05:30 slave stopped at master position mysql-bin.000001/492
2013-10-06T20:05:50 slave stopped at master position mysql-bin.000001/492
2013-10-06T20:06:10 slave stopped at master position mysql-bin.000001/492
2013-10-06T20:06:30 slave stopped at master position mysql-bin.000001/492
2013-10-06T20:06:50 slave stopped at master position mysql-bin.000001/492
2013-10-06T20:07:10 slave stopped at master position mysql-bin.000001/492
2013-10-06T20:07:30 no new binlog events
2013-10-06T20:07:50 slave stopped at master position mysql-bin.000001/492
2013-10-06T20:08:10 slave stopped at master position mysql-bin.000001/492
2013-10-06T20:08:30 slave stopped at master position mysql-bin.000001/492
2013-10-06T20:08:50 slave stopped at master position mysql-bin.000001/492
2013-10-06T20:09:10 slave stopped at master position mysql-bin.000001/492
2013-10-06T20:09:30 slave stopped at master position mysql-bin.000001/492
2013-10-06T20:09:50 slave stopped at master position mysql-bin.000001/492
2013-10-06T20:10:10 slave stopped at master position mysql-bin.000001/492
2013-10-06T20:10:30 slave stopped at master position mysql-bin.000001/492
2013-10-06T20:10:50 no new binlog events
2013-10-06T20:11:10 slave stopped at master position mysql-bin.000001/492
2013-10-06T20:11:30 slave stopped at master position mysql-bin.000001/492
2013-10-06T20:11:50 slave stopped at master position mysql-bin.000001/492
2013-10-06T20:12:10 slave stopped at master position mysql-bin.000001/492
2013-10-06T20:12:30 slave stopped at master position mysql-bin.000001/492
2013-10-06T20:12:50 slave stopped at master position mysql-bin.000001/492
2013-10-06T20:13:10 slave stopped at master position mysql-bin.000001/492
2013-10-06T20:13:30 slave stopped at master position mysql-bin.000001/492
2013-10-06T20:13:30 Setting slave to run normally

mysql> select * from justdb.test;
+------+
| id   |
+------+
|    1 |
+------+
1 row in set (0.00 sec)

四附延時(shí)備份腳本

復(fù)制代碼代碼如下:

#!/bin/bash
#
# chkconfig: - 88 12
# description: the mysql ab delay scripts

host=192.168.100.54
user=rep
password=larry

delay=2m
in=15s

prog=/usr/bin/pt-slave-delay

. /etc/init.d/functions

start() {
    echo -n "Starting `basename $prog`..."
    daemon $prog --host=$host --user=$user --password=$password --delay=$delay --interval=$in --daemonize --log=/var/log/mysql-delay.log
    echo
}

stop() {
    echo -n "Stopping `basename $prog`..."
    killproc  $prog
    echo
}

case "$1" in
    start)
        start

    stop)
        stop

    restart)
        stop
        start

    *)
        echo "Usage: $0 {start|stop|restart}"
        exit 1
esac