GaussDB T 备份工具GaussRoach.py 报错：NoneType object has no attribute

问题描述

运行华为GaussDB T 备份工具Roach时报错如下：

[omm@pr7 roach]$ python GaussRoach.py -h
Traceback (most recent call last):
  File "GaussRoach.py", line 27, in <module>
    import util.GSroachCommon as RoachCommon
  File "/opt/software/roach/util/GSroachCommon.py", line 23, in <module>
    from util.GSroachConfig import RConfig,ClusterStatus
  File "/opt/software/roach/util/GSroachConfig.py", line 13, in <module>
    ROACH_INI = os.path.join(ROACH_HOME,"conf","roach.ini")
  File "/usr/lib64/python2.7/posixpath.py", line 77, in join    elif path == '' or path.endswith('/'):
AttributeError: 'NoneType' object has no attribute 'endswith'[omm@pr7 roach]$ python GaussRoach.py -h
Traceback (most recent call last):
  File "GaussRoach.py", line 27, in <module>
    import util.GSroachCommon as RoachCommon
  File "/opt/software/roach/util/GSroachCommon.py", line 23, in <module>
    from util.GSroachConfig import RConfig,ClusterStatus
  File "/opt/software/roach/util/GSroachConfig.py", line 15, in <module>
    g_logger = GaussLog(os.path.join(log_path,DEFAULT_LOG_PATH,LOG_FILE_NAME))
  File "/usr/lib64/python2.7/posixpath.py", line 77, in join    elif path == '' or path.endswith('/'):
AttributeError: 'NoneType' object has no attribute 'endswith'

请问如何解决？

专家解答

查看/opt/software/roach/util/GSroachConfig.py相关行代码如下:

log_path = DefaultValue.getPathFileOfENV("GAUSSLOG")
ROACH_INI = os.path.join(ROACH_HOME,"conf","roach.ini")

g_logger = GaussLog(os.path.join(log_path,DEFAULT_LOG_PATH,LOG_FILE_NAME))

这个问题是gaussdb脚本和Python版本不兼容的问题，Python 2.7   调用posixpath.py 在对路径进行拼接的时候，如果发现有些路径为空，就出现了这个报错。

所以根据以上至少需要设置GAUSSLOG和ROACH_HOME两个环境变量，就可以正常打开了。

[omm@pr7 roach]$ export ROACH_HOME=/opt/software/roach
[omm@pr7 roach]$ export GAUSSLOG=/opt/software/roach/log[omm@pr7 roach]$ python GaussRoach.py -h
[GAUSS-51800] : The environmental variable GAUSSHOME is empty.

另外需要设置GAUSSHOME环境变量即可正常使用。

[omm@pr7 roach]$ export GAUSSHOME=/opt/gaussdb/app
[omm@pr7 roach]$ python GaussRoach.py -h

GaussRoach.py is a utility to backup GaussDB100 to NBU/disk and restore GaussDB100 from NBU/disk.

Usage:
  python GaussRoach.py -h | --help
  python GaussRoach.py -v | --version
  python GaussRoach.py -t start
  python GaussRoach.py -t backup [options]
  python GaussRoach.py -t restore [options]
  python GaussRoach.py -t stop
  python GaussRoach.py -t delete [options]
  python GaussRoach.py -t show [options]
  python GaussRoach.py -t validate [options]
Common options:
  -t                                            The step of GaussRoach, include config, clean and start,backup,restore,delete,stop
  -h  --help                                    Show this help, then exit
  -v  --version                                 Display the current roach version.
  --master-port <master port>                   The port in which master roach should be started.
  --media-type <media type>                     Mention type of media either disk or NBU
  --media-destination <media destination>       The path or policy that should be used for backup/restore as per media-type.
  --metadata-destination <path-name>            The path where the metadata file is to be kept in backup
  --group                                       backup,restore,start database group in SingleService
  --nbu-policy <nbu policy>                     The NBU policy that should be used for backup/restore.
  --nbu-schedule <nbu schedule>                 The NBU schedule that should be used for backup/restore.

Options for backup
  --compression-level                           The compression level that should be used for backup.
  --compression-mode                            The compression mode that should be used for backup.
  --archivelog                                  Backup archive log
  --prior-backup-key                            Previous Full Backup key to be considered as the base for Incremental Backup

Options for Restore
  --backup-key <backup key>                     The  key for restoring.
  --clean                                       For cluster restore,performs clean up activity internally.
  --restore-new-cluster                         Restore data to new cluster
  --archivelog                                  Restore archive log
  --restore-target-time                         Time(<=) to be used for restore, format '<YYYY-MM-DD HH:MM:SS>'Options for Show
  --all-backups                                 Show complete backup catalogue information. Default action if no option given.
  --backup-key <backup_key>                     Show restore path upto a given backup key.

Options for Validate
  --backup-key <backup key>                     The  key for validate.

Options for Delete
  --cascade                                     To delete all descendant backups of the provided backup key.
  ### Refer user manual for more details ###

转自墨天轮