数据守护搭建
1.关闭主备实例root：systemctl stop
2.创建主备备份目录data/
3.主库备份：./dmrman backup DATABASE 'ini目录' FULL TO 文件名 BACKUPSET '存放目录'
4.备库拷贝：scp root@地址目录 .(当前目录)
5.备库还原、恢复：./dmrman RESTORE/recover DB 'ini' FROM '目录'
6.同步数据模数：./dmrman RECOVER DATABASE 'ini' UPDATE DB_MAGIC
7.启动主库：dmserver /ini mount
8.修改配置SP_SET_PARA_VALUE(1,'ALTER_MODE_STATUS',1);
sp_set_oguid();
alter database primary;
sp_set_para_value(1,'alter_mode_status',0);
9.修改mal/arch/watcher/ini文件配置
主备服务注册：
./dm_service_installer.sh -t dmserver -p DMSERVER -m mount -dm_ini /dm8/DAMENG/dm.ini
./dm_service_installer.sh -t dmwatcher -p DMWATCHER -watcher_ini /dm8/DAMENG/dmwatcher.ini
10.启动备库dmserver /ini mount
11.同主库修改，standby
12.启动主备守护：dmwatcher /dmwatcher.ini
13.登录主备库验证
14.配置监视器：ini文件
监视器服务注册：
./dm_service_installer.sh -t dmmonitor -p DMMONITOR -monitor_ini /dm8/DAMENG/dmmonitor.ini
15.启动监视器：dmmonitor /ini
16.login登录、switchover切换主备
17.退出步骤，exit退出监视器-退出备机-退出主机-关闭备库-关闭主库