Last_SQL_Error: Could not execute Write_rows event on table hcy.t1; 
Duplicate entry '2' for key 'PRIMARY', 
Error_code: 1062; 
handler error HA_ERR_FOUND_DUPP_KEY; the event's master log mysql-bin.000006, end_log_pos 924

mysql> desc hcy.t1;
+-------+---------+------+-----+---------+-------+
| Field | Type  | Null | Key | Default | Extra |
+-------+---------+------+-----+---------+-------+
| id  | int(11) | NO  | PRI | 0    |    | 
| name | char(4) | YES |   | NULL  |    | 
+-------+---------+------+-----+---------+-------+

mysql> delete from t1 where id=2;
Query OK, 1 row affected (0.00 sec)

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

mysql> show slave status\G;
……
Slave_IO_Running: Yes
Slave_SQL_Running: Yes
……
mysql> select * from t1 where id=2;

Last_SQL_Error: Could not execute Update_rows event on table hcy.t1; 
Can't find record in 't1', 
Error_code: 1032; 
handler error HA_ERR_KEY_NOT_FOUND; 
the event's master log mysql-bin.000010, end_log_pos 794

/usr/local/mysql/bin/mysqlbinlog --no-defaults -v -v --base64-output=DECODE-ROWS mysql-bin.000010 | grep -A '10' 794

#120302 12:08:36 server id 22 end_log_pos 794 Update_rows: table id 33 flags: STMT_END_F
### UPDATE hcy.t1
### WHERE
###  @1=2 /* INT meta=0 nullable=0 is_null=0 */
###  @2='bbc' /* STRING(4) meta=65028 nullable=1 is_null=0 */
### SET
###  @1=2 /* INT meta=0 nullable=0 is_null=0 */
###  @2='BTV' /* STRING(4) meta=65028 nullable=1 is_null=0 */
# at 794
#120302 12:08:36 server id 22 end_log_pos 821 Xid = 60
COMMIT/*!*/;
DELIMITER ;
# End of log file
ROLLBACK /* added by mysqlbinlog */;
/*!50003 SET COMPLETION_TYPE=@OLD_COMPLETION_TYPE*/;

mysql> select * from t1 where id=2;
+----+------+
| id | name |
+----+------+
| 2 | BTV | 
+----+------+
1 row in set (0.00 sec)

mysql> insert into t1 values (2,'BTV');
Query OK, 1 row affected (0.00 sec)

mysql> select * from t1 where id=2;  
+----+------+
| id | name |
+----+------+
| 2 | BTV | 
+----+------+
1 row in set (0.00 sec)

mysql> stop slave ;set global sql_slave_skip_counter=1;start slave;
Query OK, 0 rows affected (0.01 sec)
Query OK, 0 rows affected (0.00 sec)
Query OK, 0 rows affected (0.00 sec)

mysql> show slave status\G;
……
 Slave_IO_Running: Yes
 Slave_SQL_Running: Yes
……

Last_SQL_Error: Error initializing relay log position: I/O error reading the header from the binary log
Last_SQL_Error: Error initializing relay log position: Binlog has bad magic number; 
It's not a binary log file that can be used by this version of MySQL

mysql> show slave status\G;
*************************** 1. row ***************************
       Master_Log_File: mysql-bin.000010
     Read_Master_Log_Pos: 1191
        Relay_Log_File: vm02-relay-bin.000005
        Relay_Log_Pos: 253
    Relay_Master_Log_File: mysql-bin.000010
       Slave_IO_Running: Yes
      Slave_SQL_Running: No
       Replicate_Do_DB: 
     Replicate_Ignore_DB: 
      Replicate_Do_Table: 
    Replicate_Ignore_Table: 
   Replicate_Wild_Do_Table: 
 Replicate_Wild_Ignore_Table: 
          Last_Errno: 1593
          Last_Error: Error initializing relay log position: I/O error reading the header from the binary log
         Skip_Counter: 1
     Exec_Master_Log_Pos: 821

Relay_Master_Log_File: mysql-bin.000010
Exec_Master_Log_Pos: 821
mysql> stop slave;
Query OK, 0 rows affected (0.01 sec)

mysql> CHANGE MASTER TO MASTER_LOG_FILE='mysql-bin.000010',MASTER_LOG_POS=821;
Query OK, 0 rows affected (0.01 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: 192.168.8.22
         Master_User: repl
         Master_Port: 3306
        Connect_Retry: 10
       Master_Log_File: mysql-bin.000010
     Read_Master_Log_Pos: 1191
        Relay_Log_File: vm02-relay-bin.000002
        Relay_Log_Pos: 623
    Relay_Master_Log_File: mysql-bin.000010
       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: 1191
       Relay_Log_Space: 778
       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: 
Ibbackup

[root@vm01 etc]# more my_local.cnf 

datadir =/usr/local/mysql/data
innodb_data_home_dir = /usr/local/mysql/data
innodb_data_file_path = ibdata1:10M:autoextend
innodb_log_group_home_dir = /usr/local/mysql/data
innodb_buffer_pool_size = 100M
innodb_log_file_size = 5M
innodb_log_files_in_group=2


[root@vm01 etc]# ibbackup /bak/etc/my_local.cnf /bak/etc/my_bak.cnf 

InnoDB Hot Backup version 3.0.0; Copyright 2002-2005 Innobase Oy
License A21488 is granted to vm01 (chunyang_he@126.com)
(--apply-log works in any computer regardless of the hostname)
Licensed for use in a computer whose hostname is 'vm01'
Expires 2012-5-1 (year-month-day) at 00:00
See http://www.innodb.com for further information
Type ibbackup --license for detailed license terms, --help for help

Contents of /bak/etc/my_local.cnf:
innodb_data_home_dir got value /usr/local/mysql/data
innodb_data_file_path got value ibdata1:10M:autoextend
datadir got value /usr/local/mysql/data
innodb_log_group_home_dir got value /usr/local/mysql/data
innodb_log_files_in_group got value 2
innodb_log_file_size got value 5242880

Contents of /bak/etc/my_bak.cnf:
innodb_data_home_dir got value /bak/data
innodb_data_file_path got value ibdata1:10M:autoextend

datadir got value /bak/data
innodb_log_group_home_dir got value /bak/data
innodb_log_files_in_group got value 2
innodb_log_file_size got value 5242880

ibbackup: Found checkpoint at lsn 0 1636898
ibbackup: Starting log scan from lsn 0 1636864
120302 16:47:43 ibbackup: Copying log...
120302 16:47:43 ibbackup: Log copied, lsn 0 1636898
ibbackup: We wait 1 second before starting copying the data files...
120302 16:47:44 ibbackup: Copying /usr/local/mysql/data/ibdata1
ibbackup: A copied database page was modified at 0 1636898
ibbackup: Scanned log up to lsn 0 1636898
ibbackup: Was able to parse the log up to lsn 0 1636898
ibbackup: Maximum page number for a log record 0
120302 16:47:46 ibbackup: Full backup completed!
[root@vm01 etc]#
[root@vm01 etc]# cd /bak/data/
[root@vm01 data]# ls
ibbackup_logfile ibdata1

[root@vm01 data]# ibbackup --apply-log /bak/etc/my_bak.cnf 

InnoDB Hot Backup version 3.0.0; Copyright 2002-2005 Innobase Oy
License A21488 is granted to vm01 (chunyang_he@126.com)
(--apply-log works in any computer regardless of the hostname)
Licensed for use in a computer whose hostname is 'vm01'
Expires 2012-5-1 (year-month-day) at 00:00
See http://www.innodb.com for further information
Type ibbackup --license for detailed license terms, --help for help

Contents of /bak/etc/my_bak.cnf:
innodb_data_home_dir got value /bak/data
innodb_data_file_path got value ibdata1:10M:autoextend
datadir got value /bak/data
innodb_log_group_home_dir got value /bak/data
innodb_log_files_in_group got value 2
innodb_log_file_size got value 5242880

120302 16:48:38 ibbackup: ibbackup_logfile's creation parameters:
ibbackup: start lsn 0 1636864, end lsn 0 1636898,
ibbackup: start checkpoint 0 1636898


ibbackup: start checkpoint 0 1636898
InnoDB: Doing recovery: scanned up to log sequence number 0 1636898
InnoDB: Starting an apply batch of log records to the database...
InnoDB: Progress in percents: 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 .....99
Setting log file size to 0 5242880
ibbackup: We were able to parse ibbackup_logfile up to
ibbackup: lsn 0 1636898
ibbackup: Last MySQL binlog file position 0 1191, file name ./mysql-bin.000010
ibbackup: The first data file is '/bak/data/ibdata1'
ibbackup: and the new created log files are at '/bak/data/'
120302 16:48:38 ibbackup: Full backup prepared for recovery successfully!

[root@vm01 data]# ls
ibbackup_logfile ibdata1 ib_logfile0 ib_logfile1

[root@vm02]# mk-table-checksum h=vm01,u=admin,p=123456 h=vm02,u=admin,p=123456 -d hcy -t t1
Cannot connect to MySQL because the Perl DBI module is not installed or not found. 
Run 'perl -MDBI' to see the directories that Perl searches for DBI.
If DBI is not installed, try:
 Debian/Ubuntu apt-get install libdbi-perl
 RHEL/CentOS  yum install perl-DBI
 OpenSolaris  pgk install pkg:/SUNWpmdbi

[root@vm02 bin]# mk-table-checksum h=vm01,u=admin,p=123456 h=vm02,u=admin,p=123456 -d hcy -t t1
DATABASE TABLE CHUNK HOST ENGINE   COUNT     CHECKSUM TIME WAIT STAT LAG
hcy   t1    0 vm02 InnoDB    NULL    1957752020  0  0 NULL NULL
hcy   t1    0 vm01 InnoDB    NULL    1957752020  0  0 NULL NULL

[root@vm02 ~]# mk-table-checksum h=vm01,u=admin,p=123456 h=vm02,u=admin,p=123456 -d hcy | mk-checksum-filter    
hcy   t2    0 vm01 InnoDB    NULL    1957752020  0  0 NULL NULL
hcy   t2    0 vm02 InnoDB    NULL    1068689114  0  0 NULL NULL

mysql> select * from t2;         mysql> select * from t2;  
+----+------+               +----+------+
| id | name |               | id | name |
+----+------+               +----+------+
| 1 | a  |               | 1 | a  | 
| 2 | b  |               | 2 | b  | 
| 3 | ss  |               | 3 | ss  | 
| 4 | asd |               | 4 | asd | 
| 5 | ss  |               +----+------+
+----+------+               4 rows in set (0.00 sec)
5 rows in set (0.00 sec) 
                     mysql> \! hostname; 
mysql> \! hostname;            vm02    
vm01 
[root@vm02 ~]# mk-table-sync --execute --print --no-check-slave --transaction --databases hcy h=vm01,u=admin,p=123456 h=vm02,u=admin,p=123456 
INSERT INTO `hcy`.`t2`(`id`, `name`) VALUES ('5', 'ss') /*maatkit src_db:hcy src_tbl:t2 src_dsn:h=vm01,p=...,u=admin dst_db:hcy dst_tbl:t2 
dst_dsn:h=vm02,p=...,u=admin lock:0 transaction:1 changing_src:0 replicate:0 bidirectional:0 pid:3246 user:root host:vm02*/;

If C<--transaction> is specified, C<LOCK TABLES> is not used. Instead, lock
and unlock are implemented by beginning and committing transactions.
The exception is if L<"--lock"> is 3.
If C<--no-transaction> is specified, then C<LOCK TABLES> is used for any
value of L<"--lock">. See L<"--[no]transaction">.
When enabled, either explicitly or implicitly, the transaction isolation level
is set C<REPEATABLE READ> and transactions are started C<WITH CONSISTENT
SNAPSHOT>

#!/bin/bash
#
#check_mysql_slave_replication_status
#
#
#
parasum=2
help_msg(){
 
cat <<
 help
+---------------------+
+Error
 Cause:
+you
 must input $parasum parameters!
+1st
 : Host_IP
+2st
 : Host_Port
help
exit
}
 
[
 $#
 -ne ${parasum} ] && help_msg #若参数不够打印帮助信息并退出
 
export HOST_IP=$1
export HOST_PORt=$2
MYUSER="root"     
MYPASS="123456"
 
MYSQL_CMD="mysql
 -u$MYUSER -p$MYPASS"
MailTitle=""        #邮件主题
Mail_Address_MysqlStatus="root@localhost.localdomain"  #收件人邮箱  
 
time1=$(date +"%Y%m%d%H%M%S")
time2=$(date +"%Y-%m-%d
 %H:%M:%S")
 
SlaveStatusFile=/tmp/salve_status_${HOST_PORT}.${time1} 
#邮件内容所在文件
echo "--------------------Begin
 at: "$time2
 > $SlaveStatusFile
echo "" >>
 $SlaveStatusFile
 
#get
 slave status
${MYSQL_CMD}
 -e "show
 slave status\G" >>
 $SlaveStatusFile #取得salve进程的状态
 
#get
 io_thread_status,sql_thread_status,last_errno  取得以下状态值
 
IOStatus=$(cat $SlaveStatusFile|grep Slave_IO_Running|awk '{print
 $2}')
SQLStatus=$(cat $SlaveStatusFile|grep Slave_SQL_Running
 |awk '{print
 $2}')
  Errno=$(cat $SlaveStatusFile|grep Last_Errno
 | awk '{print
 $2}')
  Behind=$(cat $SlaveStatusFile|grep Seconds_Behind_Master
 | awk '{print
 $2}')
 
echo "" >>
 $SlaveStatusFile
 
if [
"$IOStatus" ==
"No" ]
 || [ "$SQLStatus" ==
"No" ];then  #判断错误类型
    if [
"$Errno" -eq 0
 ];then  #可能是salve线程未启动
      $MYSQL_CMD
 -e "start
 slave io_thread;start slave sql_thread;"
      echo "Cause
 slave threads doesnot's running,trying start slsave io_thread;start slave sql_thread;" >>
 $SlaveStatusFile
      MailTitle="[Warning]
 Slave threads stoped on $HOST_IP $HOST_PORT"
    elif [
"$Errno" -eq 1007
 ] || [ "$Errno" -eq 1053
 ] || [ "$Errno" -eq 1062
 ] || [ "$Errno" -eq 1213
 ] || [ "$Errno" -eq 1032
 ]\
      ||
 [ "Errno" -eq 1158
 ] || [ "$Errno" -eq 1159
 ] || [ "$Errno" -eq 1008
 ];then #忽略此些错误
      $MYSQL_CMD
 -e "stop
 slave;set global sql_slave_skip_counter=1;start slave;"
      echo "Cause
 slave replication catch errors,trying skip counter and restart slave;stop slave ;set global sql_slave_skip_counter=1;slave start;" >>
 $SlaveStatusFile
      MailTitle="[Warning]
 Slave error on $HOST_IP $HOST_PORT! ErrNum: $Errno"
    else
      echo "Slave
 $HOST_IP $HOST_PORT is down!" >>
 $SlaveStatusFile
      MailTitle="[ERROR]Slave
 replication is down on $HOST_IP $HOST_PORT ! ErrNum:$Errno"
    fi
fi
if [
 -n "$Behind" ];then
    Behind=0
fi
echo "$Behind" >>
 $SlaveStatusFile
 
#delay
 behind master 判断延时时间
if [
 $Behind -gt 300 ];then
  echo `date +"%Y-%m%d
 %H:%M:%S"`
"slave
 is behind master $Bebind seconds!" >>
 $SlaveStatusFile
  MailTitle="[Warning]Slave
 delay $Behind seconds,from $HOST_IP $HOST_PORT"
fi
 
if [
 -n "$MailTitle" ];then #若出错或者延时时间大于300s则发送邮件
    cat ${SlaveStatusFile}
 | /bin/mail -s
"$MailTitle" $Mail_Address_MysqlStatus
fi
 
#del
 tmpfile:SlaveStatusFile
>
 $SlaveStatusFile

#!/bin/sh
#
 check_mysql_slave_replication_status
#
 参考:http://www.tianfeiyu.com/?p=2062
 
Usage(){
  echo Usage:
  echo "$0
 HOST PORT USER PASS"
}
 
[
 -z "$1" -o
 -z "$2" -o
 -z "$3" -o
 -z "$4" ]
 && Usage && exit 1
HOST=$1
PORT=$2
USER=$3
PASS=$4
 
MYSQL_CMD="mysql
 -h$HOST -P$PORT -u$USER -p$PASS"
 
MailTitle=""        #邮件主题
Mail_Address_MysqlStatus="root@localhost.localdomain"  #收件人邮箱  
 
time1=$(date +"%Y%m%d%H%M%S")
time2=$(date +"%Y-%m-%d
 %H:%M:%S")
 
SlaveStatusFile=/tmp/salve_status_${HOST_PORT}.${time1} 
#邮件内容所在文件
echo "--------------------Begin
 at: "$time2
 > $SlaveStatusFile
echo "" >>
 $SlaveStatusFile
 
#get
 slave status
${MYSQL_CMD}
 -e "show
 slave status\G" >>
 $SlaveStatusFile #取得salve进程的状态
 
#get
 io_thread_status,sql_thread_status,last_errno  取得以下状态值
 
 IOStatus=$(cat $SlaveStatusFile|grep Slave_IO_Running|awk '{print
 $2}')
SQLStatus=$(cat $SlaveStatusFile|grep Slave_SQL_Running
 |awk '{print
 $2}')
  Errno=$(cat $SlaveStatusFile|grep Last_Errno
 | awk '{print
 $2}')
  Behind=$(cat $SlaveStatusFile|grep Seconds_Behind_Master
 | awk '{print
 $2}')
 
echo "" >>
 $SlaveStatusFile
 
if [
"$IOStatus" =
"No" -o
"$SQLStatus" =
"No" ];then
  case "$Errno" in
  0)
    #
 可能是slave未启动
    $MYSQL_CMD
 -e "start
 slave io_thread;start slave sql_thread;"
    echo "Cause
 slave threads doesnot's running,trying start slsave io_thread;start slave sql_thread;" >>
 $SlaveStatusFile
    ;;
  1007|1053|1062|1213|1032|1158|1159|1008)
    #
 忽略这些错误
    $MYSQL_CMD
 -e "stop
 slave;set global sql_slave_skip_counter=1;start slave;"
    echo "Cause
 slave replication catch errors,trying skip counter and restart slave;stop slave ;set global sql_slave_skip_counter=1;slave start;" >>
 $SlaveStatusFile
    MailTitle="[Warning]
 Slave error on $HOST:$PORT! ErrNum: $Errno"
    ;;
  *)
    echo "Slave
 $HOST:$PORT is down!" >>
 $SlaveStatusFile
    MailTitle="[ERROR]Slave
 replication is down on $HOST:$PORT! Errno:$Errno"
    ;;
  esac
fi
 
if [
"$Behind" =
"NULL" -o
 -z "$Behind" ];then
  Behind=0
fi
echo "Behind:$Behind" >>
 $SlaveStatusFile
 
#delay
 behind master 判断延时时间
if [
 $Behind -gt 300 ];then
  echo `date +"%Y-%m%d
 %H:%M:%S"`
"slave
 is behind master $Bebind seconds!" >>
 $SlaveStatusFile
  MailTitle="[Warning]Slave
 delay $Behind seconds,from $HOST $PORT"
fi
 
if [
 -n "$MailTitle" ];then #若出错或者延时时间大于300s则发送邮件
  cat ${SlaveStatusFile}
 | /bin/mail -s
"$MailTitle" $Mail_Address_MysqlStatus
fi
 
#del
 tmpfile:SlaveStatusFile
>
 $SlaveStatusFile