Cisco FI6248UP second node join cluster failure ? ‘ Error while exchanging SSH keys. Rebooting in 30 secs ‘

因更換了FI6248UP node-B RMA在想說加入cluster居然會fail又一直重開機狀況無限迴圈..

以下為一般拿到第二個node-B時,基本作法先接好
a. Node-A L1 接 Node-B L1 , Node-A L2 接 Node-B L2
b. 接上MGMT 網路線
c. 等join cluster後再接上 server port ,再來是 ethernet port / FCoE port

如下是狀況如下
——————————————————————————————————————-

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 IP Address: 192.168.1.1
Peer Fabric interconnect Mgmt0 IP Netmask: 255.255.255.0
Cluster IP address          :192.168.1.10

Physical Switch Mgmt0 IPv4 address : 192.168.1.2

Apply and save the configuration (select ‘no’ if you want to re-enter)? (yes/no): yes
Applying configuration. Please wait.

Error while exchanging SSH keys. Rebooting in 30 secs
Resetting board

** 原由是Node-A /dev/null 權限有可能是 600 (rw- , — , — ) **

workaround:
—————————
step01.
FI6248-A# connect local-mgmt

step02.
FI6248-A(local-mgmt)# copy tftp://client-ip-address/ucs-dplug.5.0.3.N2.2.11.3a.gbin workspace:debug_plugin/ucs-dplug.5.0.3.N2.2.11.3a.gbin

step03.
FI6248-A(local-mgmt)# cd debug_plugin/

step04.
FI6248-A(local-mgmt)# copy ucs-dplug.5.0.3.N2.2.11.3a.gbin x

step05.
FI6248-A(local-mgmt)# ls // check file list 應存在著二個檔案
FI6248-A(local-mgmt)# ls

1 2308480 Apr 22 10:00:51 2016 ucs-dplug.5.0.3.N2.2.11.3a.gbin
1 2308480 Apr 22 14:36:17 2016 x

step06. FI6248-A(local-mgmt)# load x //執行過一次即自動刪除x plug-in
###############################################################
Warning: debug-plugin is for engineering internal use only!
For security reason, plugin image has been deleted.
###############################################################
Successfully loaded debug-plugin!!!
Linux(debug)#

step07.
Linux(debug)# ls -la /dev/null
crw——-  1 root root 1, 3 Jun 27  2007 /dev/null

step08.
Linux(debug)# chmod 666 /dev/null

step09.
Linux(debug)# ls -la /dev/null
crw-rw-rw-  1 root root 1, 3 Jun 27  2007 /dev/null

step10.
Linux(debug)# exit

step11.重新再加入cluster一次
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 IP Address: 192.168.1.1
Peer Fabric interconnect Mgmt0 IP Netmask: 255.255.255.0
Cluster IP address          : 192.168.1.10

Physical Switch Mgmt0 IPv4 address : 192.168.1.2

Apply and save the configuration (select ‘no’ if you want to re-enter)? (yes/no): yes
Applying configuration. Please wait.

  Configuration file – Ok  <<看到OK眼淚直流…..成功了…

step11. check cluster state.
FI6248-A# sh cluster state
Cluster Id: 0x11111111111111111111111111111111111111

A: UP, PRIMARY
B: UP, SUBORDINATE

HA READY

Done.

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