SQLServer wwwhj8828com18o88049999数据库镜像复制切换方案

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SQLServer wwwhj8828com18o88049999数据库镜像复制切换方案

数量烦恼 2018-10-08 回复 1 浏览 1281
目标:       主机做了Mirror和Replication,当主机出现问题时,Replication和Mirror实现自动的故障转移(Mirror 和Replication都切换到备机,而当主机        重新启动后,自动充当备机的角色)。 环境:           五台虚拟机,配置均为Windows2008 Enterprise + SQLServer2008R2 Enterprise           08R201:Mirror 见证机(WITNESS)           IP:192.168.56.101           08R202:主机(Rep+Mirror)                  IP:192.168.56.102           08R203:Rep分发机                               IP:192.168.56.103           08R204:Rep订阅机                               IP:192.168.56.104           08R205:镜像机(Mirror)                       IP:192.168.56.105 步骤: 配置有见证服务器的镜像 创建证书和Endpoint      08R202(Master) 上运行下面的脚本: --主机执行: USE master; CREATE MASTER KEY ENCRYPTION BY PASSWORD ='123456abc'; CREATE CERTIFICATE HOST_A_cert WITH SUBJECT = 'HOST_A certificate' , START_DATE = '11/08/2010',EXPIRY_DATE = '10/31/2099'; --主机执行: CREATE ENDPOINT Endpoint_Mirroring STATE = STARTED AS TCP ( LISTENER_PORT=5022 , LISTENER_IP = ALL ) FOR DATABASE_MIRRORING ( AUTHENTICATION = CERTIFICATE HOST_A_cert , ENCRYPTION = REQUIRED ALGORITHM AES , ROLE = ALL ); --主机执行: BACKUP CERTIFICATE HOST_A_cert TO FILE = 'D:HOST_A_cert.cer';       08R205(Mirror) 上运行下面的脚本: --备机执行: USE master; CREATE MASTER KEY ENCRYPTION BY PASSWORD ='123456abc'; CREATE CERTIFICATE HOST_B_cert WITH SUBJECT = 'HOST_B certificate', START_DATE = '11/08/2010',EXPIRY_DATE = '10/31/2099'; --备机执行: CREATE ENDPOINT Endpoint_Mirroring STATE = STARTED AS TCP ( LISTENER_PORT=5022 , LISTENER_IP = ALL ) FOR DATABASE_MIRRORING ( AUTHENTICATION = CERTIFICATE HOST_B_cert , ENCRYPTION = REQUIRED ALGORITHM AES , ROLE = ALL ); --备机执行: BACKUP CERTIFICATE HOST_B_cert TO FILE = 'D:HOST_B_cert.cer';       08R201(WITNESS) 上运行下面的脚本: --见证机执行 USE master; CREATE MASTER KEY ENCRYPTION BY PASSWORD ='123456abc'; CREATE CERTIFICATE HOST_W_cert WITH SUBJECT = 'HOST_W certificate', START_DATE = '11/08/2010',EXPIRY_DATE = '10/31/2099'; --见证机执行 CREATE ENDPOINT Endpoint_Mirroring STATE = STARTED AS TCP ( LISTENER_PORT=5022 , LISTENER_IP = ALL ) FOR DATABASE_MIRRORING ( AUTHENTICATION = CERTIFICATE HOST_W_cert , ENCRYPTION = REQUIRED ALGORITHM AES , ROLE = ALL ); --见证机执行 BACKUP CERTIFICATE HOST_W_cert TO FILE = 'D:HOST_W_cert.cer'; 交换证书      将HOST_B_cert.cer和HOST_W_cert.cer拷贝到 08R202 机器的”D:Cert“目录;      将HOST_A_cert.cer和HOST_W_cert.cer拷贝到 08R205 机器的”D:Cert“目录;      将HOST_A_cert.cer和HOST_B_cert.cer拷贝到 08R201 机器的”D:Cert“目录;      08R202(Master) 上运行下面的脚本: --Master CREATE LOGIN HOST_B_login WITH PASSWORD = '123abc!@#'; CREATEUSER HOST_B_user FOR LOGIN HOST_B_login; CREATE CERTIFICATE HOST_B_certAUTHORIZATION HOST_B_user FROM FILE = 'D:CertHOST_B_cert.cer'; GRANTCONNECT ON ENDPOINT::Endpoint_Mirroring TO [HOST_B_login]; CREATE LOGIN HOST_W_login WITH PASSWORD = '123abc!@#'; CREATE USER HOST_W_user FORLOGIN HOST_W_login; CREATE CERTIFICATE HOST_W_cert AUTHORIZATIONHOST_W_user FROM FILE = 'D:CertHOST_W_cert.cer'; GRANT CONNECT ONENDPOINT::Endpoint_Mirroring TO [HOST_W_login];      08R205(Mirror) 上运行下面的脚本: --Mirror CREATE LOGIN HOST_A_login WITH PASSWORD = '123abc!@#'; CREATEUSER HOST_A_user FOR LOGIN HOST_A_login; CREATE CERTIFICATE HOST_A_certAUTHORIZATION HOST_A_user FROM FILE = 'D:CertHOST_A_cert.cer'; GRANTCONNECT ON ENDPOINT::Endpoint_Mirroring TO [HOST_A_login]; CREATE LOGIN HOST_W_login WITH PASSWORD = '123abc!@#'; CREATE USER HOST_W_user FORLOGIN HOST_W_login; CREATE CERTIFICATE HOST_W_cert AUTHORIZATIONHOST_W_user FROM FILE = 'D:CertHOST_W_cert.cer'; GRANT CONNECT ONENDPOINT::Endpoint_Mirroring TO [HOST_W_login];      08R201(WITNESS) 上运行下面的脚本: --WITNESS CREATE LOGIN HOST_A_login WITH PASSWORD = '123abc!@#'; CREATEUSER HOST_A_user FOR LOGIN HOST_A_login; CREATE CERTIFICATE HOST_A_certAUTHORIZATION HOST_A_user FROM FILE = 'D:CertHOST_A_cert.cer'; GRANTCONNECT ON ENDPOINT::Endpoint_Mirroring TO [HOST_A_login]; CREATE LOGIN HOST_B_login WITH PASSWORD = '123abc!@#'; CREATE USER HOST_B_user FORLOGIN HOST_B_login; CREATE CERTIFICATE HOST_B_cert AUTHORIZATIONHOST_B_user FROM FILE = 'D:CertHOST_B_cert.cer'; GRANT CONNECT ONENDPOINT::Endpoint_Mirroring TO [HOST_B_login]; 备份还原数据库      08R202(Master) 上备份数据库: BACKUP DATABASE RepTest TO DISK='D:tempRepTest.bak' BACKUP LOG RepTestTO DISK='D:tempRepTest.trn'      将备份文件拷贝到 08R205(Mirror) 上做还原(最好以SA帐号登录,使得数据库所有者为”SA“): --RESTORE RESTORE DATABASE RepTest FROM DISK = N'D:RepTest.bak' WITHFILE = 1, MOVE N'RepTest' TO N'D:DataRepTest.mdf', MOVE N'RepTest_log'TO N'D:DataRepTest_log.ldf', NORECOVERY, NOUNLOAD, STATS = 10 GORESTORE LOG RepTest FROM DISK ='D:RepTest.trn' WITH NORECOVERY 建立镜像       在08R205(Mirror) 上执行: --Mirror ALTER DATABASE RepTest SET PARTNER ='TCP://192.168.56.102:5022';      在 08R202(Master)上执行: ALTER DATABASE RepTest SET PARTNER = 'TCP://192.168.56.105:5022'; ALTERDATABASE RepTest SET WITNESS = 'TCP://192.168.56.101:5022'; ALTERDATABASE RepTest SET SAFETY FULL 到此,镜像已经建立完成。 配置Replication(事务型复制)      Replicaiton不做具体的搭建过程,只做几点说明:      1.  08R202和08R205都需要搭建到08R203的Distribution;             2.  08R202和08R205上的发布库的所有者必须为“SA”,否则切换会出现如下错误:The process could not execute ‘sp_replcmds’ on ‘WIN-08R205′.      3.  08R203分发机上配置文件需要做如下修改(配置故障转移Partner): --配置复制故障转移参数 --查看代理配置,在分发服务器运行 execsp_help_agent_profile --Agent_Type含义 --1 = Snapshot Agent; 2 = Log Reader Agent; 3 = Distribution Agent; --4 = Merge Agent; 9 = Queue Reader Agent. --对于事务复制,需查看Agent_Type=1,2的Profile_id --对于事务复制,需要配置快照代理(Snapshot Agent)和日志读取代理(Log Reader Agent) execsp_add_agent_parameter @profile_id = 1, @parameter_name = N'-PublisherFailoverPartner', @parameter_value = N'WIN-08R205'--镜像服务器名称 exec sp_add_agent_parameter @profile_id = 2, @parameter_name = N'-PublisherFailoverPartner', @parameter_value = N'WIN-08R205'--镜像服务器名称 修改完成后,记得重启Agent服务,使之生效。       4.  从08R202创建到08R204的同步链。 模拟故障转移并观察结果      1.  暂停08R202的SQLServer服务;      2.  到08R205上观察镜像和同步链是否转移过去了;              3.  如果同步链正常,修改某个表中的数据,看是否能同步到08R204上;       4.  重新启动08R202的SQLServer服务,看其是否成为了镜像机;               5.  如果一起都正常,那恭喜啦,我们的测试成功。
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服务器云 1楼 2018-10-08
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