Cannot log in to some InstaGENI nodes

[johren@bbn.com]

I have created several slivers in the last couple of weeks where one or more of the four nodes (VMs) have not had their SSH keys configured correctly. IOW, I get a password prompt when attempting to log in to the node. I ran into the same problem today and left the slice up in case someone wants to troubleshoot. The slice is johGEM1209261101. I can only log into node PCA (pc1.utah.geniracks.net -p 31035). The rest present the password prompt.

Luisa has reproduced the same problem in two of her slices today.

[lnevers@bbn.com]

On 9/26/12 3:31 PM, Leigh Stoller wrote:

This is a case where telling us about the not working example in detail is more hepful.

The exact ssh command, to what IP and what port, etc. I looked at PCB, which has your keys and looks okay, but no one has tried to log into it.

Lbs

One scenario where this problem was seen was for sliver named "lninsta" and the following VMS sessions:

  ssh -p 32829 lnevers@pc3.utah.geniracks.net 
  ssh -p 32827  lnevers@pc3.utah.geniracks.net 

a second scenario were this was also seen is with sliver named "lninsta-3" and the following did not have the ssh keys:

ssh -p 33338  lnevers@pc1.utah.geniracks.net

[johren@bbn.com]

I have tried to log in to all four nodes in this slice. These are the results:

GN - FAILED:

geniuser@UserWorkspace:~/Tutorials/GEMINI/common$ ssh ​johren@pcvm1-5.utah.geniracks.net ​johren@pcvm1-5.utah.geniracks.net's password:

PCA - SUCCEEDED:

geniuser@UserWorkspace:~/Tutorials/GEMINI/common$ ssh ​johren@pc1.utah.geniracks.net -p 31035 Last login: Wed Sep 26 13:07:32 2012 from min-dhcp33-251-139.bbn.com [johren@PCA ~]$ exit logout Connection to pc1.utah.geniracks.net closed.

PCB - FAILED:

geniuser@UserWorkspace:~/Tutorials/GEMINI/common$ ssh ​johren@pc1.utah.geniracks.net -p 31036 ​johren@pc1.utah.geniracks.net's password:

PCC - FAILED:

geniuser@UserWorkspace:~/Tutorials/GEMINI/common$ ssh ​johren@pc1.utah.geniracks.net -p 31037 ​johren@pc1.utah.geniracks.net's password:

[johren@bbn.com]

Try again with the correct wiki formatting:

GN - FAILED:

    geniuser@UserWorkspace:~/Tutorials/GEMINI/common$ ssh johren@pcvm1-5.utah.geniracks.net
    johren@pcvm1-5.utah.geniracks.net's password:

PCA - SUCCEEDED:

    geniuser@UserWorkspace:~/Tutorials/GEMINI/common$ ssh johren@pc1.utah.geniracks.net -p 31035
    Last login: Wed Sep 26 13:07:32 2012 from min-dhcp33-251-139.bbn.com
    [johren@PCA ~]$ exit
    logout
    Connection to pc1.utah.geniracks.net closed.

PCB - FAILED:

    geniuser@UserWorkspace:~/Tutorials/GEMINI/common$ ssh johren@pc1.utah.geniracks.net -p 31036
    johren@pc1.utah.geniracks.net's password:

PCC - FAILED:

    geniuser@UserWorkspace:~/Tutorials/GEMINI/common$ ssh johren@pc1.utah.geniracks.net -p 31037
    johren@pc1.utah.geniracks.net's password:

[lnevers@bbn.com]

On 9/26/12 4:33 PM, Leigh Stoller wrote:

#51: Cannot log in to some InstaGENI nodes

Hmm, weird race condition that I am looking for. Lets leave things as is for a while please.

While trying to test a 2 node shared vlan 1750 experiment ran into this problem. The sliver is named "2shared" and the host where the keys were not uploaded is:

pc3.utah.geniracks.net (port 31034).

[lnevers@bbn.com]

Still having problems with ssh key not being uploaded. The problem sliver is IG-EXP-5-exp1 using 2 hosts on shared VLAN. The host without keys is pc5.utah.geniracks.net (port 32059)