mysql主從複製（冷備）

lovehewenyu發表於2016-08-15
原文網址 : http://blog.itpub.net/26442936/viewspace-2123509/
MySql

mysql主從複製（冷備）


1.create repl user on master
grant replication slave on *.* to identified by 'doudou123';

  1. root@ (none ) 10 :13 >grant replication slave on * . * to 'repl' @ '10.124.110.116' identified by 'doudou123' ;
  2. Query OK , 0 rows affected (0 .04 sec )

2.enable BINLOG and set server-id in my.conf and restart server
[mysqld]
log-bin = /mysql/data/3307/mysql-bin.log
server-id = 113

  1. root@ (none ) 10 :35 >show variables like ' %log_bin % ' ;
  2. + - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - + - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - +
  3. | Variable_name | Value |
  4. + - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - + - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - +
  5. | log_bin | ON |
  6. | log_bin_basename | /mysql /data /3307 /mysql -bin . log | < = =success
  7. | log_bin_index | /mysql /data /3307 /binlog .index |
  8. | log_bin_trust_function_creators | ON |
  9. | log_bin_use_v1_row_events | OFF |
  10. | sql_log_bin | ON |
  11. + - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - + - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - +

  13. root@ (none ) 10 :36 >show variables like ' %server_id % ' ;
  14. + - - - - - - - - - - - - - - - - + - - - - - - - +
  15. | Variable_name | Value |
  16. + - - - - - - - - - - - - - - - - + - - - - - - - +
  17. | server_id | 113 | < = =success
  18. | server_id_bits | 32 |
  19. + - - - - - - - - - - - - - - - - + - - - - - - - +
  20. 2 rows in set (0 .00 sec )

3.flush tables
flush tables with read lock;

  1. root@ (none ) 10 :42 >flush tables with read lock ;
  2. Query OK , 0 rows affected (0 .00 sec )

4.show file and position
show master status;


  1. root@ (none ) 14 :57 >show master status ;
  2. + - - - - - - - - - - - - - - - - - - + - - - - - - - - - - + - - - - - - - - - - - - - - + - - - - - - - - - - - - - - - - - - + - - - - - - - - - - - - - - - - - - - +
  3. | File | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set |
  4. + - - - - - - - - - - - - - - - - - - + - - - - - - - - - - + - - - - - - - - - - - - - - + - - - - - - - - - - - - - - - - - - + - - - - - - - - - - - - - - - - - - - +
  5. | mysql -bin .000008 | 120 | | | |
  6. + - - - - - - - - - - - - - - - - - - + - - - - - - - - - - + - - - - - - - - - - - - - - + - - - - - - - - - - - - - - - - - - + - - - - - - - - - - - - - - - - - - - +

5.cold backup
tar -cvf 3307data.tar 3307


6.unlock tables on master
unlock tables;

  1. root@ (none ) 14 :18 >unlock tables ;
  2. Query OK , 0 rows affected (0 .02 sec )

7.set only server-id in my.conf on slave
[mysqld]
server-id = 114
vi auto.cnf
server_uuid=57735006-38f1-11e6-862c-005056beb65f


8.startup server with --skip-slave-start on slave
mysqld_multi start 3307

9.set user,ip,port,replication log and position on slave
change master to
master_host='10.124.110.113',
master_port=3307,
master_user='repl',
master_password='doudou123',
master_log_file='mysql-bin.000008',
master_log_pos=120;

  1. mysql > change master to
  2.      - > master_host = '10.124.110.113' ,
  3.      - > master_port =3307 ,
  4.      - > master_user = 'repl' ,
  5.      - > master_password = 'doudou123' ,
  6.      - > master_log_file = 'binlog.000008' ,
  7.      - > master_log_pos =120 ;
  8. Query OK , 0 rows affected , 2 warnings (0 .05 sec )

10.startup slave process
start slave;


  1. mysql > start slave ;
  2. Query OK , 0 rows affected (0 .01 sec )

11.show processlist on slave
show processlist \G


mysql> show processlist \G
*************************** 1. row ***************************
     Id: 1
   User: event_scheduler
   Host: localhost
     db: NULL
Command: Daemon
   Time: 10060
  State: Waiting on empty queue
   Info: NULL
*************************** 2. row ***************************
     Id: 2
   User: root
   Host: localhost
     db: NULL
Command: Query
   Time: 0
  State: init
   Info: show processlist
*************************** 3. row ***************************
     Id: 3
   User: system user
   Host:
     db: NULL
Command: Connect
   Time: 19
  State: Connecting to master   <=="Waiting for master to send event" is right. and some errors because password is wrong or server_uuid is the same.
## find errors using "show slave status \G"  and modify server_uuid using "auto.cnf" and find server_uuid using "show variables like '%server_uuid%';" ##
   Info: NULL
*************************** 4. row ***************************
     Id: 4
   User: system user
   Host:
     db: NULL
Command: Connect
   Time: 19
  State: Slave has read all relay log; waiting for the slave I/O thread to update it
   Info: NULL
4 rows in set (0.00 sec)


  1. this is all right !!!!
  2. mysql > show processlist \G
  3. * * * * * * * * * * * * * * * * * * * * * * * * * * * 1 . row * * * * * * * * * * * * * * * * * * * * * * * * * * *
  4.      Id : 1
  5.    User : system user
  6.    Host :
  7.      db : NULL
  8. Command : Connect
  9.    Time : 31769
  10.   State : Slave has read all relay log ; waiting for the slave I/O thread to update it
  11.    Info : NULL
  12. * * * * * * * * * * * * * * * * * * * * * * * * * * * 2 . row * * * * * * * * * * * * * * * * * * * * * * * * * * *
  13.      Id : 2
  14.    User : system user
  15.    Host :
  16.      db : NULL
  17. Command : Connect
  18.    Time : 946
  19.   State : Waiting for master to send event
  20.    Info : NULL
  21. * * * * * * * * * * * * * * * * * * * * * * * * * * * 3 . row * * * * * * * * * * * * * * * * * * * * * * * * * * *
  22.      Id : 3
  23.    User : event_scheduler
  24.    Host : localhost
  25.      db : NULL
  26. Command : Daemon
  27.    Time : 946
  28.   State : Waiting on empty queue
  29.    Info : NULL
  30. * * * * * * * * * * * * * * * * * * * * * * * * * * * 4 . row * * * * * * * * * * * * * * * * * * * * * * * * * * *
  31.      Id : 5
  32.    User : root
  33.    Host : localhost
  34.      db : test
  35. Command : Query
  36.    Time : 0
  37.   State : init
  38.    Info : show processlist
  39. 4 rows in set (0 .00 sec )

12.test change rows on master
use test
show tables;
create table repl_test(id int);
insert into repl_test values(1),(2),(3);
insert into repl_test values(4),(5),(6);
insert into repl_test values(7),(8),(9);


13.show test rows on slave
use test
show tables;

  1. select * from repl_test ;

  3. + - - - - - - +
  4. | id |
  5. + - - - - - - +
  6. | 1 |
  7. | 2 |
  8. | 3 |
  9. | 4 |
  10. | 5 |
  11. | 6 |
  12. | 7 |
  13. | 8 |
  14. | 9 |
  15. + - - - - - - +
  16. 9 rows in set (0 .00 sec )

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