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Cisco Bug: CSCvi72765 - Display files names on the console when SSH key exchange fails

Last Modified

Apr 05, 2018

Products (1)

  • Cisco Unified Computing System

Known Affected Releases

2.2(7c)A

Description (partial)

Symptom:
FI-A being added to the cluster with FI-B as primary.

########## FI B ########## 

Linux(debug)# ls -l /root/.ssh/id_rsa.pub
-rw-r--r-- 1 root root 225 Nov  2 10:30 /root/.ssh/id_rsa.pub

Linux(debug)# ls -l /opt/ssh_keys/root/id_rsa.pub
-rw-r--r-- 1 root root 219 Jun 12  2012 /opt/ssh_keys/root/id_rsa.pub

Linux(debug)# diff  root/.ssh/id_rsa.pub  /opt/ssh_keys/root/id_rsa.pub
1c1
< ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAAAgQDgD599LyR8KW/Mfkh/4sewgSU4cLfzFekLGXky82YGBpAi6hmeg7hpapg2D3JbykgSI480PufDmtub0PCTVEICLfRB9FYwn3yVYKo66tcZdZV0RDx5+Ct+jROB22E1vnp1ou7NoH60+me9Pu3w3x7P5SaH2A1b71/9PCcDXNE0Jw== root@(none)
---
> ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAAAgQDgD599LyR8KW/Mfkh/4sewgSU4cLfzFekLGXky82YGBpAi6hmeg7hpapg2D3JbykgSI480PufDmtub0PCTVEICLfRB9FYwn3yVYKo66tcZdZV0RDx5+Ct+jROB22E1vnp1ou7NoH60+me9Pu3w3x7P5SaH2A1b71/9PCcDXNE0Jw== root@


~FI-A~
########## Problem state ############

Enter the configuration method. (console/gui) ? console
Installer has detected the presence of a peer Fabric interconnect. This Fabric interconnect will be added to the cluster. Continue (y/n) ? y
Enter the admin password of the peer Fabric interconnect:
Connecting to peer Fabric interconnect... done
Retrieving config from peer Fabric interconnect... done
Peer Fabric interconnect Mgmt0 IPv4 Address: 10.34.37.2
Peer Fabric interconnect Mgmt0 IPv4 Netmask: 255.255.255.0
Cluster IPv4 address : 10.34.37.3
Peer FI is IPv4 Cluster enabled. Please Provide Local Fabric Interconnect Mgmt0 IPv4 Address
Physical Switch Mgmt0 IP address : 10.34.37.1

Apply and save the configuration (select 'no' if you want to re-enter)? (yes/no): yes
Applying configuration. Please wait.
Sat Mar 3 10:06:39 UTC 2018
Error while exchanging SSH keys. Rebooting in 30 secs
#################################

Conditions:
During the process of UCSM infra upgrade from 2.2.7c to 2.2.8g, UCSM was upgraded to 2.2 8g and then rebooted the subordinate FI.
After the reboot this FI-A failed to join the cluster and ended up in initial configuration mode.
Customer tried to add it to the cluster which failed with this error: "Error while exchanging SSH keys. Rebooting in 30 secs"


UCSM: 2.2.7c
FI [A/B]: 2.2.7c
UCS-FI-6248UP
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