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转载地址：http://yueliangdao0608.blog.51cto.com/397025/1199960
我主要体验了下几个关于REPLICATION的工具。 其他的可以参见手册。
先说下我的环境：
MASTER: 192.168.1.131
SLAVE: 192.168.1.132, 192.168.1.133
三台DB都有对外的ALL权限用户。
各个配置文件如下，
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 | [root@mysql56-master home]# cat /etc/my.cnf [mysqld] user = ytt skip- name -resolve innodb_buffer_pool_size = 128M basedir = /usr/ local /mysql datadir = /usr/ local /mysql/data port = 3306 server_id = 131 socket = /tmp/mysql.sock explicit_defaults_for_timestamp log-bin=mysql56-master-bin binlog- ignore -db=mysql gtid-mode= on enforce-gtid-consistency log-slave-updates binlog-format=ROW sync-master-info=1 report-host=192.168.1.131 report-port=3306 master_info_repository= table relay_log_info_repository= table |
其他两台SERVER，除了SERVER-ID，都基本相同，我就不贴了。
1. MYSQLREPLICATE 搭建主从的脚本，这里我搭建了两台从机。
| 1 2 3 4 5 6 7 8 9 10 11 12 | mysqlreplicate --master=root:root@192.168.1.131:3306 --slave=root:root@192.168.1.132:3306;... [root@mysql56-master home]# ./replicate_create # master on 192.168.1.131: ... connected. # slave on 192.168.1.132: ... connected. # Checking for binary logging on master... # Setting up replication... # ...done. # master on 192.168.1.131: ... connected. # slave on 192.168.1.133: ... connected. # Checking for binary logging on master... # Setting up replication... # ...done. |
2. mysqlrplcheck 检查主从的运行情况。
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 | [root@mysql56-master home]# mysqlrplcheck --master=root:root@192.168.1.131:3306 --slave=root:root@192.168.1.132:3306 -s # master on 192.168.1.131: ... connected. # slave on 192.168.1.132: ... connected. Test Description Status --------------------------------------------------------------------------- Checking for binary logging on master [pass] Are there binlog exceptions? [WARN] + ---------+--------+------------+ | server | do_db | ignore_db | + ---------+--------+------------+ | master | | mysql | | slave | | mysql | + ---------+--------+------------+ Replication user exists? [pass] Checking server_id values [pass] Checking server_uuid values [pass] Is slave connected to master? [pass] Check master information file [pass] Checking InnoDB compatibility [pass] Checking storage engines compatibility [pass] Checking lower_case_table_names settings [pass] Checking slave delay (seconds behind master) [pass] # # Slave status: # Slave_IO_State : Waiting for master to send event Master_Host : 192.168.1.131 Master_User : rpl Master_Port : 3306 Connect_Retry : 60 Master_Log_File : mysql56-master-bin.000002 Read_Master_Log_Pos : 151 Relay_Log_File : mysql56-slave-relay-bin.000003 Relay_Log_Pos : 379 Relay_Master_Log_File : mysql56-master-bin.000002 Slave_IO_Running : Yes Slave_SQL_Running : Yes Replicate_Do_DB : Replicate_Ignore_DB : mysql 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 : 151 Relay_Log_Space : 819 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 : 131 Master_UUID : 4d89ad1d-bc12-11e2-87e9-080027338857 Master_Info_File : mysql.slave_master_info SQL_Delay : 0 SQL_Remaining_Delay : None 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 : 1 # ...done. |
3. mysqlrplshow. 显示主从的架构。
| 1 2 3 4 5 6 7 8 9 10 | [root@mysql56-master home]# mysqlrplshow --master=root:root@192.168.1.131:3306 --discover-slaves-login=root:root -v # master on 192.168.1.131: ... connected. # Finding slaves for master: 192.168.1.131:3306 # Replication Topology Graph 192.168.1.131:3306 (MASTER) | + --- 192.168.1.132:3306 [IO running: Yes] - (SLAVE) | + --- 192.168.1.133:3306 [IO running: Yes] - (SLAVE) [root@mysql56-master home]# |
4. mysqlfailover. 监视主从健康状态。
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 | [root@mysql56-master home]# mysqlfailover --master=root:root@192.168.1.131:3306 --discover-slaves-login=root:root # Discovering slaves for master at 192.168.1.131:3306 # Discovering slave at 192.168.1.132:3306 # Found slave: 192.168.1.132:3306 # Discovering slave at 192.168.1.133:3306 # Found slave: 192.168.1.133:3306 # Checking privileges . MySQL Replication Failover Utility Failover Mode = auto Next Interval = Tue May 14 12:27:56 2013 Master Information ------------------ Binary Log File Position Binlog_Do_DB Binlog_Ignore_DB mysql56-master-bin.0 151 mysql GTID Executed Set None Replication Health Status + ----------------+-------+---------+--------+------------+-------------------------------------------+ | host | port | role | state | gtid_mode | health | + ----------------+-------+---------+--------+------------+-------------------------------------------+ | 192.168.1.131 | 3306 | MASTER | UP | ON | OK | | 192.168.1.132 | 3306 | SLAVE | UP | ON | OK | | 192.168.1.133 | 3306 | SLAVE | UP | ON | Binary log and Relay log filters differ. | + ----------------+-------+---------+--------+------------+-------------------------------------------+ Q-quit R-refresh H-health G-GTID Lists U-UUIDs [root@mysql56-master home]# |
5. mysqlrpladmin. 对主从进行管理。
停止从机服务：
| 1 2 3 4 5 6 7 | [root@mysql56-master home]# mysqlrpladmin --master=root:root@192.168.1.131:3306 --slaves=root:root@192.168.1.132:3306,root:root@192.168.1.133:3306 stop # Checking privileges . # Performing STOP on all slaves. # Executing stop on slave 192.168.1.132:3306 Ok # Executing stop on slave 192.168.1.133:3306 Ok # ...done. [root@mysql56-master home]# |
开启从机服务：
| 1 2 3 4 5 6 7 | [root@mysql56-master home]# mysqlrpladmin --master=root:root@192.168.1.131:3306 --slaves=root:root@192.168.1.132:3306,root:root@192.168.1.133:3306 stop # Checking privileges . # Performing STOP on all slaves. # Executing stop on slave 192.168.1.132:3306 Ok # Executing stop on slave 192.168.1.133:3306 Ok # ...done. [root@mysql56-master home]# |
选择最好的备机准备以后切换用.
| 1 2 3 4 5 6 | [root@mysql56-master home]# mysqlrpladmin --master=root:root@192.168.1.131:3306 --slaves=root:root@192.168.1.132:3306,root:root@192.168.1.133:3306 elect # Checking privileges . # Electing candidate slave from known slaves. # Best slave found is located on 192.168.1.132:3306. # ...done. [root@mysql56-master home]# |
进行主从切换。
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 | [root@mysql56-master home]# mysqlrpladmin --master=root:root@192.168.1.131:3306 --slaves=root:root@192.168.1.132:3306,root:root@192.168.1.133:3306 --new-master=root:root@192.168.1.132:3306 --demote-master switchover # Checking privileges . # Performing switchover from master at 192.168.1.131:3306 to slave at 192.168.1.132:3306. # Checking candidate slave prerequisites. # Checking slaves configuration to master. # Waiting for slaves to catch up to old master. # Stopping slaves. # Performing STOP on all slaves. # Demoting old master to be a slave to the new master. # Switching slaves to new master. # Starting all slaves. # Performing START on all slaves. # Checking slaves for errors. # Switchover complete. # # Replication Topology Health: + ----------------+-------+---------+--------+------------+-----------------------------+ | host | port | role | state | gtid_mode | health | + ----------------+-------+---------+--------+------------+-----------------------------+ | 192.168.1.132 | 3306 | MASTER | UP | ON | OK | | 192.168.1.131 | 3306 | SLAVE | UP | ON | OK | | 192.168.1.133 | 3306 | SLAVE | UP | ON | OK | + ----------------+-------+---------+--------+------------+-----------------------------+ # ...done. [root@mysql56-master home]# |
显示下新的主从架构：
| 1 2 3 4 5 6 7 8 9 10 | [root@mysql56-master home]# mysqlrplshow --master=root:root@192.168.1.132:3306 --discover-slaves-login=root:root -v # master on 192.168.1.132: ... connected. # Finding slaves for master: 192.168.1.132:3306 # Replication Topology Graph 192.168.1.132:3306 (MASTER) | + --- 192.168.1.131:3306 [IO running: Yes] - (SLAVE) | + --- 192.168.1.133:3306 [IO running: Yes] - (SLAVE) [root@mysql56-master home]# |
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