Data ONTAP Discussions

DataONTAP powershell cannot connect to a cluster

Hi all, I'm having trouble connecting to 1 CDOT cluster but can connect to others from same server with matching hardware and OnTap versions. Below is what I've checked already.  I CAN reach onbox system manager OK as well as SSH to the cluster mgmt LIF, but powershell connections and thus WFA connections fail.  Details:

 

Error:

 

PS C:\Windows\system32> Connect-NcController san2001c-cluster.eci.cloud -Credential admin
Connect-NcController : Object reference not set to an instance of an object.
At line:1 char:1
+ Connect-NcController san2001c-cluster.eci.cloud -Credential admin
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : InvalidResult: (san2001c-cluster.eci.cloud:NcController) [Connect-NcController], NullRef
erenceException
+ FullyQualifiedErrorId : HttpConnectionFailed,DataONTAP.C.PowerShell.SDK.ConnectNcController

 

PS C:\Windows\system32> Connect-NcController san2001c-cluster.eci.cloud -Credential admin -https
Connect-NcController : API invoke failed.
At line:1 char:1
+ Connect-NcController san2001c-cluster.eci.cloud -Credential admin -https
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : InvalidResult: (san2001c-cluster.eci.cloud:NcController) [Connect-NcController], NaExcep
tion
+ FullyQualifiedErrorId : HttpConnectionFailed,DataONTAP.C.PowerShell.SDK.ConnectNcController

 

 

Things I've tried:

  • Connect to another cluster also running ontap 9.1from same powershell server -> connect OK
  • Connect to affected cluster using systemscope credentials -> same error as above on affected cluster but OK on other 9.1 clusters
  • Compared configuration of the following match for both affected cluster and working cluster (both clusters run ontap 9.1:
    • vserver services web show
    • web access show
    • security ssh show
    • security ssl show
    • firewall policy show
    • security certificate show
  • There are NO firewalls between the powershell server and affected cluster
  • I've tried powershell connections from other Windows servers running different Windows OS, powershell and DataONTAP plugin versions -> same error

Other information:

-DataONTAP plugin version 4.1.0

-Powershell version 4.0

-.NET v 3.5 and 4.5 feature are installed

 

Any suggestions would be appreciated.  Thanks!

5 REPLIES 5
Highlighted

Re: DataONTAP powershell cannot connect to a cluster

^^

The connection needs API access to the cluster

 

security login show  

 

You need to have API access

 

Also, i've seen those really wierd errors once in a while

Highlighted

Re: DataONTAP powershell cannot connect to a cluster

Do I not already have this?

 

san2001c-cluster::*> sec login show
(security login show)

Vserver: san2001c-cluster
Authentication Acct Is-Nsswitch
User/Group Name Application Method Role Name Locked Group
---------------- ----------- --------- ---------------- ------ -----------
admin console password admin no no
admin http password admin no no
admin ontapi password admin no no
admin service-processor password admin no no

admin ssh password admin no no

Highlighted

Re: DataONTAP powershell cannot connect to a cluster

Yes, looks good.

 

And you are connecting to the other cluster successfully from the same computer?

Highlighted

Re: DataONTAP powershell cannot connect to a cluster

Correct 🙂  Just this 1 cluster is problematic, others work just fine and are running same OnTap versions, and apparently same configuration, as far as I can tell.

Highlighted

Re: DataONTAP powershell cannot connect to a cluster

Support had me changed "system services web modify -http-enabled true" even though other working clusters had that set to false, and that fixed the issue.  Confirmed self-signed certificates are still valid so unclear why this fixed it but powershell login works OK now.

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