vCenter VAMI backup fails when including supervisor

Products

• VMware vSphere Kubernetes Service
• VMware vCenter Server

Issue/Introduction

vCenter backup fails when including supervisor 
From /var/log/vmware/applmgmt/backup.log

 

 

 [ComponentScriptsBackup:PID-729889] [Log::run:Log.py:64] ERROR:       dynamicType = <unset>,
[ComponentScriptsBackup:PID-729889] [Log::run:Log.py:64] ERROR:       dynamicProperty = (vmodl.DynamicProperty) [],
 [ComponentScriptsBackup:PID-729889] [Log::run:Log.py:64] ERROR:       msg = 'A general system error occurred: failed to download file /wcp/backup/metadata.
yaml to VC. Error: HTTP request failed with status code: 503',
 [ComponentScriptsBackup:PID-729889] [Log::run:Log.py:64] ERROR:       faultCause = <unset>,
 [ComponentScriptsBackup:PID-729889] [Log::run:Log.py:64] ERROR:       faultMessage = (vmodl.LocalizableMessage) [],
 [ComponentScriptsBackup:PID-729889] [Log::run:Log.py:64] ERROR:       reason = 'failed to download file /wcp/backup/metadata.yaml to VC. Error: HTTP request failed with status code: 503'
 [ComponentScriptsBackup:PID-729889] [Log::run:Log.py:64] ERROR:    },
[ComponentScriptsBackup:PID-729889] [Log::run:Log.py:64] ERROR:    result = <unset>,
...
[ScriptsBackup:ComponentScripts.py:106] ERROR: Component backup command "/etc/vmware/backup/component-scripts/wcp/supervisors_backup_restore.py --backup" failed 1.
[ComponentScriptsBackup:PID-1969266] [Log::run:Log.py:64] ERROR: }Failed to take Supervisor ########### backup: Supervisor backup task 'vim.Task:task-406851' failedFailed to write backup content: Supervisor backup task 'vim.Task:task-406851' failed
 [ComponentScripts::ComponentScriptsBackup:ComponentScripts.py:135] ERROR: Error during component supervisors backup
Underlying process status. rc: 1
stdout:
stderr:
Traceback (most recent call last):
  File "/usr/lib/applmgmt/backup_restore/py/vmware/appliance/backup_restore/components/ComponentScripts.py", line 110, in ComponentScriptsBackup
    raise BackupRestoreError(('Error during component %s backup' %
util.Common.BackupRestoreError: Error during component supervisors backup
Underlying process status. rc: 1
stdout:
stderr:
[MainProcess:PID-1968862] [Proc::VerifyProcStatusAndGetArchive:Proc.py:159] ERROR: Error at process ComponentScriptsBackup; rc:1.
[MainProcess:PID-1968862] [Proc::VerifyProcStatusAndGetArchive:Proc.py:172] INFO: Following error message isn't localized:



 

 

 

Environment

vSphere 8.0
vSphere Kubernetes Service

Cause

 Port 443 should be open for Supervisor Control Plane Management Network IP address. Network issues can be seen for Supervisor from envoy logs on vCenter

1envoy[2057] [Originator@6876 sub=Default] 2025-12-12T08:30:03.274Z GET /external-cert/http1/###.###.#.##/443/wcp/backup/metadata.yaml 503 no_healthy_upstream UH 0 19 - 120000 - - 127.0.0.1:50068 HTTP/1.1 - 127.0.0.1:1080 - - - ###.####.#.#FG:443 - -
info envoy[2057] [Originator@6876 sub=Default] GET /external-cert/http1/###.####.#.#/443/wcp/backup/metadata.yaml 503 no_healthy_upstream UH 0 19 - 120005 - - 127.0.0.1:32784 HTTP/1.1 - 127.0.0.1:1080 - - - ###.####.#.#:443 - -
nfo envoy[2057] [Originator@6876 sub=Default] GET /external-cert/http1###.####.#.#443/wcp/backup/metadata.yaml 503 no_healthy_upstream UH 0 19 - 120001 - - 127.0.0.1:58376 HTTP/1.1 - 127.0.0.1:1080 - - - ###.####.#.#:443 -

Resolution

Open port 443 vCenter to the management IP on each of the supervisor nodes as per 

https://ports.broadcom.com/home/vSphere