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Updated:June 1, 2020
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This document describes how to troubleshoot an issue related to failed scheduled or on-demand backup operations in Unified Computing System Manager (UCSM) after a firmware upgrade to 4.0.2a.
Cisco recommends that you have knowledge of these topics:
SCP (Secure Copy Protocol) or SFTP (Secure File Transfer Protocol)
This document is not restricted to specific software and hardware versions.
The information in this document was created from the devices in a specific lab environment. All of the devices used in this document started with a cleared (default) configuration. If your network is live, ensure that you understand the potential impact of any command.
After a firmware upgrade to version 4.0(2a) or later, backups can no longer work on UCSM.
A similar error can be seen
[Critical] F999723 4154197 sys/backup-cop-swinds01.aaaaa.com Fsm Failed 1 2019-09-11T10:05:55.706 2019-09-11T10:05:55.706 [FSM:FAILED]: internal system backup(FSM:sam:dme:MgmtBackupBackup). Remote-Invocation-Error: End point timed out. Check for IP, password, space or access related issues.#
With Cisco UCS Manager 4.0(2a) release and later, certain insecure ciphers are blocked by UCS Fabric Interconnects. In order to log in to servers through the secure protocol, you must use a version of OpenSSH that supports at least one algorithm in each of the three categories:
The backup utility or server in use can not support the new OpenSSH requirements for UCS when the transfer protocol is Secure Shell (SSH), SFTP or SCP. Therefore, the connection is blocked, and the backup fails.
Troubleshoot Backup to SFTP or SCP Failure After Upgrade to 4.0.2a UCSM
Step 1. Upgrade software version of Putty, SFTP Server, SCP Server or other third party tool.
Step 2. Confirm that the secure tool used supports the required algorithms as with Cisco UCS Manager Release 4.0(2a), certain insecure ciphers are blocked by UCS Fabric Interconnects. To log in to servers through a secure protocol, you must use a version of OpenSSH that supports at least one algorithm in each of the three categories: