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Fix Implicit Remoting test failure on nightly run#4323

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mirichmo merged 1 commit intoPowerShell:masterfrom
SteveL-MSFT:maxconcurrentusers
Jul 26, 2017
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Fix Implicit Remoting test failure on nightly run#4323
mirichmo merged 1 commit intoPowerShell:masterfrom
SteveL-MSFT:maxconcurrentusers

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@SteveL-MSFT SteveL-MSFT commented Jul 22, 2017 •
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[Feature]
Systems running WS2012R2 w/o WMF5 has WinRM with restriction for MaxConcurrentUsers between 1-100

So the default needs to be 100 to allow PSCore6 to work w/o requiring WMF5+

This is technically a Breaking Change as we had explicitly changed the allowed max to Int.MaxValue, but for most users this shouldn't be an issue.

@SteveL-MSFT SteveL-MSFT requested a review from mirichmo July 22, 2017 06:26
@SteveL-MSFT SteveL-MSFT added the Breaking-Change breaking change that may affect users label Jul 22, 2017
@SteveL-MSFT SteveL-MSFT changed the title [Daily] Fix Implicit Remoting test failure on nightly run [Feature] Fix Implicit Remoting test failure on nightly run Jul 22, 2017
@SteveL-MSFT SteveL-MSFT changed the title [Feature] Fix Implicit Remoting test failure on nightly run Fix Implicit Remoting test failure on nightly run Jul 22, 2017
@SteveL-MSFT SteveL-MSFT reopened this Jul 22, 2017
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SteveL-MSFT commented Jul 22, 2017

@TravisEz13 having trouble getting Feature tests to run

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iSazonov commented Jul 22, 2017

WS2012R2 w/o WMF5 has WinRM with restriction for MaxConcurrentUsers between 1-100

I never knew that restriction! I tried and I can confirm.
It's also a very fantastic scenario - to a server should connect more than 100 users by WinRS!

I believe the fix does not need because the limit (1) can be changed in future, (2) can vary between systems and versions
If anybody catch the issue he get a standard error message.
So I believe the best fix is to enhance documentation https://msdn.microsoft.com/en-us/library/ee309367%28v=vs.85%29.aspx

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iSazonov commented Jul 22, 2017

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[Feature]

"If in the first line of the last (most recent) commit description you add [Feature],
we will ensure that we will also run the tests tagged with Feature."

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TravisEz13 commented Jul 22, 2017

#4304 was causing [Feature] not to work for PRs

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SteveL-MSFT commented Jul 23, 2017

@iSazonov the fix is only needed because any customer (and affects our AppVeyor CI) using WS2012/R2 without WMF5 installed will have this restriction. This means that by default, if they do new-pssessionconfigurationfile and register-pssessionconfigurationfile it will return this error. Unfortunately, we don't expose a way to set this value, they would have to understand WinRM XML configuration to make it work.

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daxian-dbw commented Jul 24, 2017

The 3 failures in implicit remoting will be resolved by #4326

@daxian-dbw daxian-dbw mentioned this pull request Jul 24, 2017
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iSazonov commented Jul 24, 2017

@SteveL-MSFT Why do we rely on the default value? What if I want 200? I can install WMF5 and get 200, but this fix is blocking me. This error is rised on the server but is sent to the remote user.
This user does not know the configuration of the remote server, which can also be changed dynamically. If we want to inform the user, we must catch this exception and create our own.

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SteveL-MSFT commented Jul 24, 2017

@iSazonov we need a default as that value is required by WinRM. I guess the question is whether we want to support downlevel systems w/o WMF5 or not. Personally, I don't like making PSCore6 dependent on WMF5. cc @joeyaiello

@SteveL-MSFT SteveL-MSFT force-pushed the maxconcurrentusers branch 2 times, most recently from c2d3444 to 6dd595a Compare July 24, 2017 16:56
@SteveL-MSFT SteveL-MSFT added the Review - Committee The PR/Issue needs a review from the PowerShell Committee label Jul 24, 2017
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iSazonov commented Jul 25, 2017

I don't like making PSCore6 dependent on WMF5 too.

@SteveL-MSFT SteveL-MSFT mentioned this pull request Jul 25, 2017
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@SteveL-MSFT SteveL-MSFT removed the Review - Committee The PR/Issue needs a review from the PowerShell Committee label Jul 25, 2017
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SteveL-MSFT commented Jul 25, 2017

Based on some internal discussion, I think where we ended up is to revert the default as it was changed due to customer impact (100 was too low) and in the cmdlet, if the registration fails, we try again with MaxConcurrentUsers=100.

@SteveL-MSFT SteveL-MSFT added the Committee-Reviewed PS-Committee has reviewed this and made a decision label Jul 25, 2017
iSazonov
iSazonov reviewed Jul 25, 2017
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src/System.Management.Automation/engine/remoting/commands/CustomShellCommands.cs Outdated
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@iSazonov iSazonov Jul 25, 2017 •
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The comment should mention WMF 5.

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@SteveL-MSFT SteveL-MSFT Jul 25, 2017

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WS2012R2 has PSv3 by default and I'm not sure if the Max limit was changed in WMF4 or WMF5, so I'll just mention WMF

@SteveL-MSFT SteveL-MSFT removed the Breaking-Change breaking change that may affect users label Jul 25, 2017
@SteveL-MSFT SteveL-MSFT requested a review from PaulHigin July 25, 2017 23:52
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SteveL-MSFT commented Jul 25, 2017

@mirichmo @PaulHigin since this is causing our nightly runs to fail, can you prioritize this review higher? thanks

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...tem.Management.Automation/engine/remoting/commands/NewPSSessionConfigurationOptionCommand.cs Outdated
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Given the decision to retry, shouldn't this be reverted?

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@SteveL-MSFT SteveL-MSFT Jul 26, 2017

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Yes, thought I did. Will fix.

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[Feature]
6c85e19 
Retry setting winrm config if it fails with MaxConcurrentUsers > 100
PaulHigin
PaulHigin approved these changes Jul 26, 2017
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LGTM

@mirichmo mirichmo merged commit cf7b9f3 into PowerShell:master Jul 26, 2017
@SteveL-MSFT SteveL-MSFT deleted the maxconcurrentusers branch July 26, 2017 17:50
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