开始～上篇实验是MariaDB的单机多实例安装

双实例端口3307主库，3308从库

3307主实例的mysqld配置

[mysqld2]  port=3307  socket=/tmp/mysql3307.sock  pid-file=/tmp/mysql3307.pid  max_allowed_packet=1M  net_buffer_length=2k  table_open_cache=4  sort_buffer_size=64k  thread_stack=128k  basedir=/usr/local/mysql  datadir=/data/mydata2  server-id=244  log-bin = master3307-bin  log-bin-index = master3307-bin.index  thread_concurrency=4  innodb_file_per_table = 1  #mysql_pwd='teleframe'

3308从实例的mysqld配置

[mysqld3]  port=3308  socket=/tmp/mysql3308.sock  pid-file=/tmp/mysql3308.pid  max_allowed_packet=1M  net_buffer_length=2k  table_open_cache=4  sort_buffer_size=64k  thread_stack=128k  basedir=/usr/local/mysql  datadir=/data/mydata3  innodb_file_per_table = 1  server-id=245  log-bin=mysql3308-bin  relay-log = relay-log  relay-log-index = relay-log-index  thread_concurrency=4  read-only = on

开始主从配置

步骤1、连接到主库上授权一个REPLICATION SLAVE帐号，并且刷新授权表

[root@e3 mysql]# mysql -uroot -h127.0.0.1 -P3307 -p  Enter password:   Welcome to the MariaDB monitor.  Commands end with ; or \g.  Your MariaDB connection id is 8  Server version: 10.0.15-MariaDB-log Source distribution    Copyright (c) 2000, 2014, Oracle, SkySQL Ab and others.    Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.    MariaDB [(none)]> show databases;  +--------------------+  | Database           |  +--------------------+  | information_schema |  | mysql              |  | performance_schema |  | test               |  | test1              |  +--------------------+  5 rows in set (0.00 sec)    MariaDB [(none)]> grant replication slave on *.* to 'repl'@'192.168.0.%' identified by 'repl';  Query OK, 0 rows affected (0.00 sec)    MariaDB [(none)]> flush privileges;  Query OK, 0 rows affected (0.00 sec)    MariaDB [(none)]> show master status;  +-----------------------+----------+--------------+------------------+  | File                  | Position | Binlog_Do_DB | Binlog_Ignore_DB |  +-----------------------+----------+--------------+------------------+  | master3307-bin.000005 |      632 |              |                  |  +-----------------------+----------+--------------+------------------+  1 row in set (0.00 sec)    MariaDB [(none)]>

        2、连接到从库上指定主库，启动slave

[root@e3 ~]# mysql -uroot -p'teleframe' -h127.0.0.1 -P3308  Welcome to the MariaDB monitor.  Commands end with ; or \g.  Your MariaDB connection id is 3  Server version: 10.0.15-MariaDB-log Source distribution    Copyright (c) 2000, 2014, Oracle, SkySQL Ab and others.    Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.    MariaDB [(none)]> change master to master_host='192.168.0.244',master_user='repl',master_password='repl',master_port=3307,master_log_file='master3307-bin.000005',master_log_pos=632;  ERROR 1201 (HY000): Could not initialize master info structure for ''; more error messages can be found in the MariaDB error log #我这报错了，如果你跟我一样报错就执行下面的命令  MariaDB [(none)]> reset slave;  Query OK, 0 rows affected (0.00 sec)    MariaDB [(none)]> change master to master_host='192.168.0.244',master_user='repl',master_password='repl',master_port=3307,;  Query OK, 0 rows affected (0.22 sec) #好了现在连接上了      master_log_file='master3307-bin.000005',master_log_pos=632  表示从主服务器那个二进制日志文件开始复制因为这是复制授权信息，所以没必要复制，在主服务器上可以查看show master status; 查看内容show binglog events in 'master-bin.000001';  MariaDB [(none)]> show slave status\G  *************************** 1. row ***************************                 Slave_IO_State:                     Master_Host: 192.168.0.244                    Master_User: repl                    Master_Port: 3307                  Connect_Retry: 60                Master_Log_File: master3307-bin.000005            Read_Master_Log_Pos: 632                 Relay_Log_File: relay-log.000002                  Relay_Log_Pos: 4          Relay_Master_Log_File: master3307-bin.000005               Slave_IO_Running: No  #  从服务器有没有正常工作主要是看这个值是否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: 0                     Last_Error:                    Skip_Counter: 0            Exec_Master_Log_Pos: 632                Relay_Log_Space: 248                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: NULL  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: 0                 Master_SSL_Crl:              Master_SSL_Crlpath:                      Using_Gtid: No                    Gtid_IO_Pos:   1 row in set (0.00 sec)  MariaDB [(none)]> start slave;  #好启动slave  Query OK, 0 rows affected (0.00 sec)    MariaDB [(none)]> show slave status\G  *************************** 1. row ***************************                 Slave_IO_State: Waiting for master to send event                    Master_Host: 192.168.0.244                    Master_User: repl                    Master_Port: 3307                  Connect_Retry: 60                Master_Log_File: master3307-bin.000005            Read_Master_Log_Pos: 632                 Relay_Log_File: relay-log.000003                  Relay_Log_Pos: 540          Relay_Master_Log_File: master3307-bin.000005               Slave_IO_Running: Yes  #表示从服务器正常工作了              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: 632                Relay_Log_Space: 831                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: 244                 Master_SSL_Crl:              Master_SSL_Crlpath:                      Using_Gtid: No                    Gtid_IO_Pos:

来测试！

在主的上面创建一个库看从的是否可以复制到

主上创建

MariaDB [(none)]> create database kcwtest;  Query OK, 1 row affected (0.00 sec)    MariaDB [(none)]> show databases;  +--------------------+  | Database           |  +--------------------+  | information_schema |  | kcwtest            |  | mysql              |  | performance_schema |  | test               |  | test1              |  +--------------------+  6 rows in set (0.00 sec)

从上查看

MariaDB [(none)]> show databases;  +--------------------+  | Database           |  +--------------------+  | information_schema |  | kcwtest            |  | mysql              |  | performance_schema |  | test               |  +--------------------+  5 rows in set (0.00 sec)

可以复制！这样就实现单机实例复制，我做的3个实例，3306端口给默认的用，3307，3308端口做主从复制。

转自：http://my.oschina.net/kcw/blog/362687