GBase 8a表级全量和增量备份还原功能测试gcrcman.py

本文介绍GBase 8a数据库集群自带的备份还原工具gcrcman的使用，尝试备份还原一个表。

参考 https://www.gbase8.cn/1679

环境

2节点集群，8.6.2Build43版本

[gbase@862b43 gcluster_0_0]$ gcadmin
CLUSTER STATE:  ACTIVE
CLUSTER MODE:   NORMAL

=================================================================
|             GBASE COORDINATOR CLUSTER INFORMATION             |
=================================================================
|   NodeName   |     IpAddress     |gcware |gcluster |DataState |
-----------------------------------------------------------------
| coordinator1 |    10.0.2.107     | OPEN  |  OPEN   |    0     |
-----------------------------------------------------------------
| coordinator2 |    10.0.2.106     | OPEN  |  OPEN   |    0     |
-----------------------------------------------------------------
=============================================================
|              GBASE DATA CLUSTER INFORMATION               |
=============================================================
|NodeName |     IpAddress     |gnode |syncserver |DataState |
-------------------------------------------------------------
|  node1  |    10.0.2.107     | OPEN |   OPEN    |    0     |
-------------------------------------------------------------
|  node2  |    10.0.2.106     | OPEN |   OPEN    |    0     |

表和数据

1个testdb.t1表，有4行数据。

gbase> select count(*) from t1;
+----------+
| count(*) |
+----------+
|        4 |
+----------+
1 row in set (Elapsed: 00:00:00.04)

gcrcman命令介绍

GBase 8a MPP Cluster 提供专用的备份恢复工具(gcrcman)，用户使用它
可以方便地对整个集群中的数据进行集群的备份和恢复。集群的备份、恢复工
具随集群的安装自动安装，该工具被安装在/opt/gcluster/