linux_hadr_环境搭建
http://guoyanxi.iteye.com/blog/1173906
简单的HADR,只用一台虚拟机,两个实例间搭建。工作量不大,一般5分钟左右能够完成。
步骤:
1.设定归档模式
2.使用备份建立standby数据库
3.设定hadr相关的参数
4.启动并测试
1.设定归档模式
2.使用备份建立standby数据库
3.设定hadr相关的参数
4.启动并测试
步骤:
1.设定归档模式
2.使用备份建立standby数据库
3.设定hadr相关的参数
4.启动并测试
- 环境:
- Server: 127.0.0.1
- Primary instance: db2inst4
- Primary service/port: 42099
- Standby instance: db2inst5
- Standby service/port: 41099
- DB name: SAMPLE
- --注意,切勿使用与DBM SVCENAME 太接近的端口,因为实例会默认使用那端口之后的连续几个端口,所以应尝试更远一些的端口
1.设定归档模式
- --在Primary:
- --启用归档模式
- [db2inst4@localhost instance]$ db2 update db cfg for SAMPLE using LOGRETAIN on
- DB20000I The UPDATE DATABASE CONFIGURATION command completed successfully.
- --启用LOGINDEXBUILD,以便日志有关索引的操作
- [db2inst4@localhost instance]$ db2 update db cfg for SAMPLE using LOGINDEXBUILD on
- DB20000I The UPDATE DATABASE CONFIGURATION command completed successfully.
2.使用备份建立standby数据库
- --备份primary
- [db2inst4@localhost arch]$ db2 list db directory
- System Database Directory
- Number of entries in the directory = 1
- Database 1 entry:
- Database alias = SAMPLE
- Database name = SAMPLE
- Local database directory = /home/db2inst4
- Database release level = d.00
- Comment =
- Directory entry type = Indirect
- Catalog database partition number = 0
- Alternate server hostname =
- Alternate server port number =
- [db2inst4@localhost arch]$ db2 backup db sample to /arch
- Backup successful. The timestamp for this backup image is : 20110430101950
- [db2inst4@localhost arch]$ ls -atrl
- total 135208
- drwxr-x--- 3 db2inst1 db2iadm1 4096 Dec 8 12:12 db2inst1
- drwxr-xr-x 27 root root 4096 Apr 22 23:45 ..
- drwxrwxrwx 3 root root 4096 Apr 30 10:19 .
- -rw------- 1 db2inst4 db2iadm1 138297344 Apr 30 10:20 SAMPLE.0.db2inst4.NODE0000.CATN0000.20110430101950.001
- --注意修改备份文件属性,以便standby实例能够访问
- [db2inst4@localhost arch]$ chmod 777 SAMPLE.0.db2inst4.NODE0000.CATN0000.20110430101950.001
- --在standby:
- [db2inst5@localhost ~]$ db2 restore db sample from /arch/ on /home/db2inst5/
- DB20000I The RESTORE DATABASE command completed successfully.
- [db2inst5@localhost ~]$ db2 list db directory
- System Database Directory
- Number of entries in the directory = 1
- Database 1 entry:
- Database alias = SAMPLE
- Database name = SAMPLE
- Local database directory = /home/db2inst5
- Database release level = d.00
- Comment =
- Directory entry type = Indirect
- Catalog database partition number = 0
- Alternate server hostname =
- Alternate server port number =
- --这时候standby的数据库应该是roll-forward pedning的状态,切勿手动roll-forward
- [db2inst5@localhost ~]$ db2 connect to SAMPLE
- SQL1117N A connection to or activation of database "SAMPLE" cannot be made
- because of ROLL-FORWARD PENDING. SQLSTATE=57019
3.设定hadr相关的参数
- --在Primary:
- db2 update db cfg for sample using HADR_LOCAL_HOST 127.0.0.1
- db2 update db cfg for sample using HADR_LOCAL_SVC 42099
- db2 update db cfg for sample using HADR_REMOTE_HOST 127.0.0.1
- db2 update db cfg for sample using HADR_REMOTE_SVC 41099
- db2 update db cfg for sample using HADR_REMOTE_INST db2inst5
- db2 update db cfg for sample using HADR_SYNCMODE SYNC
- db2 update db cfg for sample using HADR_TIMEOUT 3
- db2 update db cfg for sample using HADR_PEER_WINDOW 120
- db2 connect to sample
- db2 quiesce database immediate force connections
- db2 unquiesce database
- db2 connect reset
- --在Standby:
- db2 update db cfg for sample using HADR_LOCAL_HOST 127.0.0.1
- db2 update db cfg for sample using HADR_LOCAL_SVC 41099
- db2 update db cfg for sample using HADR_REMOTE_HOST 127.0.0.1
- db2 update db cfg for sample using HADR_REMOTE_SVC 42099
- db2 update db cfg for sample using HADR_REMOTE_INST db2inst4
- db2 update db cfg for sample using HADR_SYNCMODE SYNC
- db2 update db cfg for sample using HADR_TIMEOUT 3
- db2 update db cfg for sample using HADR_PEER_WINDOW 120
4.启动并测试
- --先启动standby
- --在Standby:
- [db2inst5@localhost ~]$ db2 start hadr on db sample as standby
- DB20000I The START HADR ON DATABASE command completed successfully.
- --这时候应该是remote catchup pending的状态:
- [db2inst5@localhost ~]$ db2pd -d sample -hadr
- Database Partition 0 -- Database SAMPLE -- Standby -- Up 0 days 00:03:44
- HADR Information:
- Role State SyncMode HeartBeatsMissed LogGapRunAvg (bytes)
- Standby RemoteCatchupPending Sync 0 1
- ConnectStatus ConnectTime Timeout
- Disconnected Sat Apr 30 14:09:54 2011 (1304143794) 3
- PeerWindowEnd PeerWindow
- Null (0) 120
- LocalHost LocalService
- 127.0.0.1 41099
- RemoteHost RemoteService RemoteInstance
- 127.0.0.1 42099 db2inst4
- PrimaryFile PrimaryPg PrimaryLSN
- S0000000.LOG 0 0x0000000002AC24A1
- StandByFile StandByPg StandByLSN StandByRcvBufUsed
- S0000000.LOG 0 0x0000000002AC24A1 0%
- --再启动Primary
- --在Primary:
- [db2inst4@localhost ~]$ db2 start hadr on database sample as primary
- DB20000I The START HADR ON DATABASE command completed successfully.
- [db2inst4@localhost ~]$ db2pd -d sample -hadr
- Database Partition 0 -- Database SAMPLE -- Active -- Up 0 days 00:00:15
- HADR Information:
- Role State SyncMode HeartBeatsMissed LogGapRunAvg (bytes)
- Primary Peer Sync 0 0
- ConnectStatus ConnectTime Timeout
- Connected Sat Apr 30 14:14:14 2011 (1304144054) 3
- PeerWindowEnd PeerWindow
- Sat Apr 30 14:16:26 2011 (1304144186) 120
- LocalHost LocalService
- 127.0.0.1 42099
- RemoteHost RemoteService RemoteInstance
- 127.0.0.1 41099 db2inst5
- PrimaryFile PrimaryPg PrimaryLSN
- S0000002.LOG 0 0x0000000003288861
- StandByFile StandByPg StandByLSN
- S0000002.LOG 0 0x0000000003288861
- --可以看到一旦Primary也起来了,hadr的状态就会变成peer
- --这时候尝试手动归档,看日志是否能够顺利传递到standby
- [db2inst4@localhost ~]$ db2 archive log for DB sample
- DB20000I The ARCHIVE LOG command completed successfully.
- --在Standby观察
- [db2inst5@localhost ~]$ db2pd -d sample -hadr
- Database Partition 0 -- Database SAMPLE -- Standby -- Up 0 days 00:05:25
- HADR Information:
- Role State SyncMode HeartBeatsMissed LogGapRunAvg (bytes)
- Standby Peer Sync 0 0
- ConnectStatus ConnectTime Timeout
- Connected Sat Apr 30 14:14:14 2011 (1304144054) 3
- PeerWindowEnd PeerWindow
- Sat Apr 30 14:17:18 2011 (1304144238) 120
- LocalHost LocalService
- 127.0.0.1 41099
- RemoteHost RemoteService RemoteInstance
- 127.0.0.1 42099 db2inst4
- PrimaryFile PrimaryPg PrimaryLSN
- S0000003.LOG 0 0x000000000366BA41
- StandByFile StandByPg StandByLSN StandByRcvBufUsed
- S0000003.LOG 0 0x000000000366BA41 0%
- --两边当前日志都是S0000003.LOG,测试成功
posted on 2016-07-21 10:44 fantiejun0436 阅读(170) 评论(0) 收藏 举报
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