Docker IIS WindowsServerCore Image - Not able to read environment variable

[nareshkhatri81]

Hi Team,

We are setting environment variable like below in init.bat file.

When i do docker exec command to see inside containers i can see those environmental variable set but when IIS process(Asp.net) try to read, it doesn't find those. we are deploying containers via Service Fabric.
Below is sample docker file

FROM microsoft/iis:windowsservercore-ltsc2016
SHELL ["powershell"]

RUN Install-WindowsFeature NET-Framework-45-ASPNET ;
Install-WindowsFeature Web-Asp-Net45

CMD init.bat

COPY webContain webContain

RUN icacls "C:\webContain" /grant IIS_IUSRS:F /T

RUN Remove-WebSite -Name 'Default Web Site'

RUN New-Website -Name 'WebContainer' -Port 84
-PhysicalPath 'c:\webContain' -ApplicationPool '.NET v4.5'
EXPOSE 84

CMD Write-Host IIS Started... ;
while ($true) { Start-Sleep -Seconds 3600 }

Below are contents of init.cmd where we set environmental variables

setx /M PATH %PATH%;C:\sffabricbin
set PATH=%PATH%;C:\sffabricbin

Thanks,
Naresh Khatri

[bariscaglar]

chiyuan ma (@mcy94w) can you take a look?

[artisticcheese]

Make sure you are not running into problem below
moby/moby#30192

[nareshkhatri81]

GSA (@artisticcheese)
Env variable are set using setx command and set command inside docker image.

[artisticcheese]

Are you sure setx is setting machine level environment variable? Also please use .NET or powershell. I don't understand how you can possibly work with docker etc and still go back to batch commands.
Check value of HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\Environment to see your machine level variables
Here is how to do it in powershell
Get-ItemProperty -path "hklm:\SYSTEM\CurrentControlSet\Control\Session Manager\Environment" -Name path

[nareshkhatri81]

GSA (@artisticcheese)
Thing here is we are dependent upon Microsoft two exes
C:\SFFabricBin\vc14_redist.x64.exe -quiet
C:\SFFabricBin\vcredist_x64.exe -quiet

which runs and setup number of environment variables which i can see when i do docker exec command but IIS w3wp process is not able to get to those variables.
https://github.com/Azure/service-fabric-scripts-and-templates/blob/master/scripts/CodePackageToDockerPackage/CreateDockerPackage.ps1

Thanks,
Naresh Khatri

[artisticcheese]

I beleive setx sets user or session level process variables, so they will not be visible from our sessions. If you want to create machine level variable yourself you can use .NET classes to do that.

[nareshkhatri81]

GSA (@artisticcheese)
we dont set those as i mention above. it is setup by MS inside C:\SFFabricBin\vc14_redist.x64.exe -quiet
C:\SFFabricBin\vcredist_x64.exe -quiet
so i dont have control over it. it contains connecting string of host which naming service should use to connect inside environmental variable.

Thanks,
naresh Khatri

[mcy94w]

Naresh Khatri (@nareshkhatri81) :

ServiceMonitor.exe only setup Env Var once when the container start. Can you confirm when the serviceMonitor.exe start, those Env Var already exist?

[bariscaglar]

chiyuan ma (@mcy94w), Naresh Khatri (@nareshkhatri81) can we close this?

[nareshkhatri81]

I need to perform few more test this week.
Let me update by end of this week.

[shirhatti]

Hi. We're closing this issue as no response or updates have been provided in a timely manner and we have been unable to reproduce it. If you have more details and are encountering this issue please add a new reply and re-open the issue.