Unable to initiate/start VAMI backup of vCenter

Products

• VMware vCenter Server

Issue/Introduction

Initiating a VAMI backup of vCenter fails with below error.

Environment

VMware vCenter 8.x

Cause

SftpStorageIOLib.py python script was altered. This script is located under /usr/lib/applmgmt/backup_restore/py/vmware/appliance/backup_restore/plugins/

 

/var/log/vmware/applmgmt/applmgmt.log

YYYY-MM-DD HH:MM:SS:MS [40931]ERROR: backupRestoreAPI: Error loading dispatch plugin: unindent does not match any outer indentation level (SftpStorageIOLib.py, line 97)
Traceback (most recent call last) :
File "/usr/lib/applmgmt/backup_restore/py/vmware/appliance/backup_restore/util/Common.py", line 393, in loadDispatchPlugin
module = importlib. import_module ('plugins. backupRestoreDispatch' )
File "/usr/lib/python3.10/importlib/_init _. py", line 126, in import_module
return bootstrap. gcd_import (name [level: ], package, level)
File "<frozen importlib._ bootstrap>", line 1050, in gcd_import
File "<frozen importlib. bootstrap>", line 1027, in find and load
File "<frozen importlib._bootstrap>",line 1006, in find_and_load_unlocked
File "<frozen importlib._bootstrap>"load_unlocked
File "<frozen importlib._bootstrap_external>", line 883, in exec_module
File "<frozen importlib._bootstrap>", line 241, in_call_with_frames_removed
File "/usr/lib/applmgmt/backup_restore/py/vmware/appliance/backup_restore/plugins/backupRestoreDispatch.py", line 25, in <module>
from .StorageIOLibFactory import CreateStorageI0Object
File "/usr/lib/applmgmt/backup_restore/py/vmware/appliance/backup_restore/plugins/StorageIOLibFactory.py", line 9, in <module>
from .SftpStorageIOLib import SftpStorageIO
File "/usr/lib/applmgmt/backup_restore/py/vmware/appliance/backup_restore/plugins/SftpStorageIOLib.py", line 97
if self.validateCerts:
                      ^
IndentationError: unindent does not match any outer indentation level

 

Resolution

SSH to vCenter Server Appliance.

1. Move the SftpStorageIOLib.py to tmp directory.

cd /usr/lib/applmgmt/backup_restore/py/vmware/appliance/backup_restore/plugins/

mv SftpStorageIOLib.py /tmp

2. Copy the SftpStorageIOLib.py script from a working vCenter to the above path using WinSCP. 

3. Restart the applmgmt service using command:

service-control --restart applmgmt

4. Proceed with the backup via VAMI

 

Note: The file SftpStorageIOLib.py attached to this article is from vCenter 8.0 Update 3d 24322831 (8.0.3.00400)