GBase 8c 恢复

GBase 8c 数据库支持数据恢复。

1.停止新集群；

2.备份新集群topo信息；

gha_ctl backup topo host path/topo.json -l dcslist -c cluster

3.还原dcs、topo、gtm、各个高可用组、cn；

命令:

gha_ctl restore xxx host path -l dcslist -c cluster

举例:

gha_ctl restore dcs host path -l dcslist -c cluster

gha_ctl restore topo host path/topo.json -l dcslist -c cluster

gha_ctl restore gtm host path -l dcslist -c cluster

gha_ctl restore datanode hg host path tbs_path wal_host wal_path target_type target_info -l dcslist -c cluster

gha_ctl restore coordinator host path tbs_path wal_host wal_path target_type target_info -l dcslist -c cluster

4.还原过程，只会还原第一个gtm、cn及每个高可用组的第一个dn。其他节点，检测到上述节点变为running后，直接start就行了