Problem

I have some HP-UX vPar machines, one day I faced the issue that one vPar machine was pinging but I was unable to login through PuTTY.

Solution

To find the reason I need to log in to the console of the vPar machine. To log in on vPar console first I need to log in on the base machine of the vPar which was a nPar machine.

Login on nPar machine

After login on nPar machine see the details of the all vPar machines created under this nPar using the command vparstatus.

# vparstatus
[Virtual Partition]
Num Name                        RunState      State
=== ==========================  ============  =========
  1 dbappweb1                    UP            Active
  2 dbappweb2                    UP            Active
  3 dbappweb3                    UP            Active

[Virtual Partition Resource Summary]
Virtual Partition               CPU      Num   Num   Total MB   Floating MB
Num Name                        Min/Max  CPUs  IO    Memory     Memory
=== ==========================  =======  ====  ====  =========  ============
  1 dbappweb1                     1/512     2     5      16384             0
  2 dbappweb2                     1/512     3     5      16384             0
  3 dbappweb3                     1/512     2     6      16384             0
#

Login to vPar Machine

Use the below command to log in on the vPar machine.

# vparconsole -p2


   vMP MAIN MENU

         CO: Console
         CM: Command Menu
         CL: Console Log
         SL: Show Event Logs
         VM: Virtual Machine Menu
         HE: Main Help Menu
          X: Exit Connection

[dbappweb2] vMP> co



        (Use Ctrl-B to return to vMP main menu.)



- - - - - - - - - - Prior Console Output - - - - - - - - - -


The system is ready.

- - - - - - - - - - - - Live Console - - - - - - - - - - - -

Console Login: root
Password:

# hostname
dbappweb2

After login on vPar console, I restarted the ssh service to resolve the above issue.

# /sbin/init.d/secsh stop
HP-UX Secure Shell stopped
# /sbin/init.d/secsh start
HP-UX Secure Shell started

Note: In the above case, my OS was HP-UX 11.31

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