原作者：Mr.robot

• 适用范围
• 问题概述
• 问题原因
• 解决方案
• 参考文档

适用范围

opengauss 2.0.1

问题概述

gs_probackup backup -B /home/omm/backup -b full --instance=og3
INFO: Backup start, gs_probackup version: 2.4.2, instance: og3, backup ID: RDNUSY, backup mode: FULL, wal mode: STREAM, remote: false, compress-algorithm: none, compress-level: 1
LOG: Backup destination is initialized
ERROR: could not connect to database omm: connect to server failed: No such file or directory

WARNING: Backup RDNUSY is running, setting its status to ERROR

问题原因

gs_probackup默认连接的数据库为omm，默认是没有这个数据库名的
[omm@og3 ~]$ gs_probackup show-config -B /ogdb/backups/ --instance=og3
pgdata = /ogdb/data/db1
system-identifier = 3422852164628655
pgdatabase = omm
archive-timeout = 5min

解决方案

在使用gs_probackup备份时添加-d指定数据库名为postgres或者通过set-config修改pgdatabbase为postgres

参考文档

opengauss