iMC dbman自动备份失败手动备份成功问题解决办法

某局点双机冷备部署iMC，主机备机都是集中式部署+本地数据库的方式。主机手工备份可以成功，但是配置自动备份后总是失败，且失败后dbman进程会自动重启。

现场是操作系统：Redhat 6

数据库：oracle11g

iMC PLAT：7.1 E0303P14

主机地址：10.100.32.3

主机主机名：wangluojiankong

备机地址：10.100.32.4

备机主机名：wangluojiankong2
 

2018-01-02 14:30:05 [INFO] [TimeBackup] Begin auto backup

2018-01-02 14:30:05 [DEBUG] [Remove] Remove file: /opt/iMC/dbman/etc/dbman_bak.conf

2018-01-02 14:30:05 [DEBUG] [TimeBackup] Bak host ip address: 10.100.32.4

2018-01-02 14:30:05 [INFO] [Client::connect_to_server] Starting connect to 10.100.32.4: 2810

2018-01-02 14:30:05 [INFO] [Client::connect_to_server] Established connection to 10.100.32.4: 2810

2018-01-02 14:30:05 [DEBUG] [My_Accept_Handler::handle_input] Connection established 10.100.32.4

2018-01-02 14:30:05 [DEBUG] [CDataConnStreamQueueT::deal_msg] Receive command code: 10010

2018-01-02 14:30:05 [DEBUG] [CDataConnStreamQueueT::deal_msg] Succeed to create FileTrans thread

2018-01-02 14:30:05 [INFO] [Remove] Fail to remove file: /opt/iMC/dbman/etc/dbman_bak.conf

2018-01-02 14:30:05 [INFO] [Client::connect_to_server] Starting connect to 10.100.32.3: 2810

2018-01-02 14:30:05 [INFO] [Client::connect_to_server] Established connection to 10.100.32.3: 2810

2018-01-02 14:30:05 [DEBUG] [My_Accept_Handler::handle_input] Connection established 10.100.32.3

2018-01-02 14:30:05 [DEBUG] [CDataConnStreamQueueT::deal_msg] Receive command code: 10009

2018-01-02 14:30:05 [INFO] [Client::connect_to_server] Starting connect to ::: 0

2018-01-02 14:30:05 [INFO] [Client::connect_to_server] Established connection to ::: 0

2018-01-02 14:30:10 [INFO] [Main] Version: 7.1.6216

2018-01-02 14:30:10 [INFO] [Main] Global directory: /opt/iMC/dbman

2018-01-02 14:30:10 [DEBUG] [Main] arv count 1

2018-01-02 14:30:10 [DEBUG] [Main] arv 1:./dbman

2018-01-02 14:30:10 [INFO] [Client::connect_to_server] Starting connect to 127.0.0.1: 2810

2018-01-02 14:30:10 [DEBUG] [Client::connect_to_server] errno: 111, strerror: Connection refused

2018-01-02 14:30:10 [ERROR] [Client::connect_to_server] Connection failed

2018-01-02 14:30:10 [ERROR] [Client::send_echo_msg] Connect to server fail

2018-01-02 14:30:10 [DEBUG] [CreateCommandThread] Succeed to create command process thread .

2018-01-02 14:30:10 [DEBUG] [CommandMain] Start CommandMain()

2018-01-02 14:30:12 [INFO] [DBMAN] Startup successfully!

主机可以收到从备机传送来的配置文件，在该配置文件中含有备机的主机名等信息，主机在进行自动备份时，根据该配置文件的备机的主机名去寻找备机时，因为在网络上找不到备机主机名的地址，dbman进程会崩溃并自动重启进程，由此主机自动备份时总是失败。

需要在主机上/etc/hosts文件中，做一条映射，将备机的IP：10.100.32.4与备机的主机名映射关系建立起来，如下图：

对于iMC冷备方案定位故障的思路及顺序是： iMC服务器软硬件状态及路由可达性检查、设备配置检查、确认iMC/数据库部署方式、数据库服务器配置检查、dbman配置检查、日志分析。

从机防火墙需要放开到TCP 2810的连接，不然会导致数据传输失败

对于主机有、备机没有的组件，不允许对该组件对应的数据库勾选“传送至备机”

保证dbman配置的路径实际存在

SQL2000的数据不可以恢复到高版本SQL数据库；

SQL 2005的数据可以恢复到SQL 2008或者SQL 2008R2(包括补丁版本)数据库；

SQL 2008的数据可以恢复到SQL 2008 R2（包括补丁版本）；

SQL 2005的数据不可以恢复到SQL 2012里面；

SQL 2008（R2）是否可以恢复到SQL 2014需要确认。