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          it运维开发教程,运维管理,因为微不足道,所以值得关注!域名来源:sos 救援 idc 数据中心 所以sos+idc=sosidc.com

          mysql高可用mha解决方案02-去哪网采用的

          发布:admin2016-3-4 16:24分类: 解决方案

          1.2   .主从同步搭建

          注意:防火墙需要关闭

          创建复制账号(masterslave1(mha新主)

          GRANT REPLICATION  SLAVE ON *.*  TO 'repl'@'192.168.127.%'  IDENTIFIED BY 'repl';

          flush privileges;

           

          查看master binlog  POS点信息

          [email protected](none) 06:47:05>show master status;

          +------------------+----------+--------------+------------------+-------------------+

          | File             | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set |

          +------------------+----------+--------------+------------------+-------------------+

          | mysql-bin.000004 |      409 |              |                  |                   |

          +------------------+----------+--------------+------------------+-------------------+

          1 row in set (0.01 sec)

           

          建立主从复制(slave01slave02

          [[email protected] ~]# mysql

          Welcome to the MySQL monitor.  Commands end with ; or \g.

          Your MySQL connection id is 2

          Server version: 5.6.27-75.0-log Percona Server (GPL), Release 75.0, Revision 8bb53b6

           

          Copyright (c) 2009-2015 Percona LLC and/or its affiliates

          Copyright (c) 2000, 2015, Oracle and/or its affiliates. All rights reserved.

           

          Oracle is a registered trademark of Oracle Corporation and/or its

          affiliates. Other names may be trademarks of their respective

          owners.

           

          Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

           

          [email protected](none) 07:03:39>CHANGE MASTER TO MASTER_HOST='192.168.127.101',MASTER_PORT=3306,MASTER_USER='repl',MASTER_PASSWORD='repl',MASTER_LOG_FILE='mysql-bin.000004',MASTER_LOG_POS=409;

          Query OK, 0 rows affected, 2 warnings (0.05 sec)

           

          [email protected](none) 07:03:41>start slave;

          Query OK, 0 rows affected (0.02 sec)

           

          查看主从复制

          [email protected](none) 07:03:42>show slave status\G;

          *************************** 1. row ***************************

                         Slave_IO_State: Waiting for master to send event

                            Master_Host: 192.168.127.101

                            Master_User: repl

                            Master_Port: 3306

                          Connect_Retry: 60

                        Master_Log_File: mysql-bin.000004

                    Read_Master_Log_Pos: 409

                         Relay_Log_File: mysqld-relay-bin.000002

                          Relay_Log_Pos: 283

                  Relay_Master_Log_File: mysql-bin.000004

                       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: 409

                        Relay_Log_Space: 457

                        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: 101

                            Master_UUID: 8b1cf62d-e063-11e5-84ba-000c2908253f

                       Master_Info_File: /data/mysql3306/master.info

                              SQL_Delay: 0

                    SQL_Remaining_Delay: NULL

                Slave_SQL_Running_State: Slave has read all relay log; waiting for the slave I/O thread to update it

                     Master_Retry_Count: 86400

                            Master_Bind:

                Last_IO_Error_Timestamp:

               Last_SQL_Error_Timestamp:

                         Master_SSL_Crl:

                     Master_SSL_Crlpath:

                     Retrieved_Gtid_Set:

                      Executed_Gtid_Set:

                          Auto_Position: 0

          1 row in set (0.02 sec)

           

          ERROR:

          No query specified

           

          以上主从已经搭建好,下面我们安装与配置MHA

          1slave服务器(192.168.127.102,192.168.103)设置read only;

          mysql> set global read_only=1;

          2)设置relay log清除方式(在每个slave 下)

          mysql> set global relay_log_purge=0;

          (3)创建监控用户,在所有MYSQL上执行

          mysql> grant all privileges on *.* to 'root'@'192.168.127.%' identified by '123456';

          mysql>flush privileges;

           

           

          4)在slave01(192.168.127.102)上创建复制用户:

          mysql> grant replication slave on *.* to 'repl'@'192.168.127.%' identified by 'repl';

          mysql>flush privileges;

           

           

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