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m.puwalski
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Veeam B&P v10 - problem with Linux backup

Post by m.puwalski » Feb 21, 2020 7:45 am 3 people like this post

Hi,

I updated my Veeam BP from 9.5 to 10 version.

In my Job Backup I have VM's with Windows Server and Linux. After update Windows Server VM's was backup correct, but Linux got error:

Code: Select all

Processing linux_vm Error: Cannot find Linux guest credentials
Before updated to v10 I don't have problem with Linux VM's and I didn't use credentials for Linux.

In new version can I backup Linux VM's without credentials?

HannesK
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Re: Veeam B&P v10 - problem with Linux backup

Post by HannesK » Feb 21, 2020 11:07 am

Hello,
and welcome to the forums.

Yes, it's possible to backup all VMs (Linux, Windows, whatever) without credentials. It depends on the application aware image processing settings whether credentials are required or not.

As you said that it worked before update... please contact support to check and post the case number here for reference

Best regards,
Hannes

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Re: Veeam B&P v10 - problem with Linux backup

Post by erpomik » Feb 22, 2020 9:35 am 1 person likes this post

Hello

I just upgraded our test-environment yesterday, and face the exact same issue. All Linux server are NOT backup up due to:
"Unable to connect to guest OS for guest processing. Cannot find Linux guest credentials"

Best regards,
Ernst

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Re: Veeam B&P v10 - problem with Linux backup

Post by Ibeme » Feb 22, 2020 12:58 pm

You can either exclude these Linux servers from Application aware processing or set the credentials in Application aware processing for those VMs.
When you do one of these things the error should disappear.

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Re: Veeam B&P v10 - problem with Linux backup

Post by ChristianHa » Feb 22, 2020 1:22 pm 1 person likes this post

Same here.

I figured out that one of the Linux VMs, actually the one I added last, had "application aware processing" switched on. I guess I forgot to turn it off at the time I added the Linux VM. Veeam v9 did not care, the error came up with v10.

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Re: Veeam B&P v10 - problem with Linux backup

Post by soehl » Feb 24, 2020 11:25 pm

Same here, we updated Veeam today and have a lot of jobs with "application-aware processing" activated, that includes Windows and Linux vms.

After the update we also the error:

Code: Select all

Processing linux_vm Error: Cannot find Linux guest credentials
For "guest file system indexing" we disabled indexing for Linux vms in the "application-aware processing", but I see no option to do the same for "application-aware processing".
:x

As workaround all of our Linux vms have now a "application aware disabled" - "vSphere Tag" and for that tag is "application-aware processing" disabled.

But it would be great to have options for Linux vms in the "application-aware processing" options like in the "indexing".

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Re: Veeam B&P v10 - problem with Linux backup

Post by Gostev » Feb 25, 2020 11:03 am

Hi, all.

After a few days, we still don't have a single support case referenced in this topic, as we request when you click New Topic. Since we can't action this report without a support case with debug logs for R&D to investigate, I'm locking this thread down and scheduling it for deletion in a few days.

If anyone has a support case ID open on this issue, please PM me and I will re-open the thread before it is deleted.

Thanks!

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Re: Veeam B&P v10 - problem with Linux backup

Post by Gostev » Feb 25, 2020 2:16 pm

03992718

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Re: Veeam B&P v10 - problem with Linux backup

Post by lightsout » Feb 25, 2020 2:24 pm

Yeah I had the same issue. I wrote some code as workaround.

Code: Select all

$jobs=get-vbrjob | ? {$_.JobType -eq "Backup"}

foreach ($job in $jobs) {
    foreach ($Object in ($Job | Get-VBRJobObject)) {
      $VSSOptions = $Object.VssOptions
      $VSSOptions.IgnoreErrors = $True
      $Object.SetVssOptions($VSSOptions)
      $job | Enable-VBRJobVSSIntegration
    }
  }
This way, it will give a warning and then failover to the v9 and before style of processing.

I got the impression from support that I should have separate jobs for Windows & Linux VMs, which I've certainly not done yet.

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Re: Veeam B&P v10 - problem with Linux backup

Post by Gostev » Feb 27, 2020 2:23 pm 2 people like this post

All, we had our QA research the issue, and the change in behavior appears to be caused by a bug fixed in v10.

In previous releases, "Require successful application-aware processing" option was quietly ignored for Linux VMs without credentials assigned. This is a bug, because this can potentially result in unrecoverable backup without the user knowing.

In v10, you will see the above-mentioned error in such situations. This is now consistent with how it always worked for Windows VMs.

You have two options to get rid of the error, both of which are already captured above:
1. Specify the missing credentials for the Linux VM in question.
2. Change the application-aware processing setting to a less strict one in the advanced settings on the Guest Processing step of the job wizard. Or, disable it completely for the specific VM only.

Thanks!

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Re: Veeam B&P v10 - problem with Linux backup

Post by dcit » Feb 27, 2020 6:12 pm

After update of Veeam Backup v9.5 to v10 I have got bunch of warnings (not errors because we do not have set "Require ..."):
Unable to connect to guest OS for guest processing. Cannot find Linux guest credentials

Googling it got me to this forum.

Reason is explained in previous Gostev's post, and I understand what I can do with it.

But what leaves me puzzled is why I have not got those warnings for CentOS 8 VMs. Is CentOS 8 (not yet) supported, so those VMs are not identified by Veeam as Linux?

Finally I would like to add that now we have ESXi 6.7.0 U2. Can it be problem with not (yet) having latest version of ESXi?

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Re: Veeam B&P v10 - problem with Linux backup

Post by Gostev » Feb 27, 2020 6:21 pm

We would be happy to investigate your specific situation. Please upload debug logs to the support case, and share the case ID here. Thanks!

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Re: Veeam B&P v10 - problem with Linux backup

Post by dcit » Feb 28, 2020 11:31 am

case ID: 04033499

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