odegroot
commented
7 months ago This seems to be triggered by the absence of the HOME environment variable.
When I SSH to the VM (after provisioning is done), then temporarily unset the HOME var, and retry Install-PSResource, then it fails with the same error.
pwsh -c 'Remove-Item Env:\HOME; gci env:; Install-PSResource -Name "Az.Accounts" -ErrorAction Stop -Verbose; Get-Error'Name Value
---- -----
_ /usr/bin/pwsh
LANG C.UTF-8
LESSCLOSE /usr/bin/lesspipe %s %s
LESSOPEN | /usr/bin/lesspipe %s
LOGNAME root
LS_COLORS rs=0:di=01;34:ln=01;36:mh=00:pi=40;33:so=01;35:do=01;35:bd=40;33;01:cd=40;33;01:or=40;31;01:mi=00:su=37;41:sg=30;43:ca=30;41:tw=30;42:ow=34;42:st=37;44:ex=01;32:*.tar=01;31:*.tgz=01;31:*.arc=01;31:*.arj=…
MAIL /var/mail/root
OLDPWD /root
PATH /opt/microsoft/powershell/7:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/snap/bin
PSModulePath /root/.local/share/powershell/Modules:/usr/local/share/powershell/Modules:/opt/microsoft/powershell/7/Modules
PWD /var/lib/waagent/custom-script/download/1
SGX_AESM_ADDR 1
SHELL /bin/bash
SHLVL 1
SUDO_COMMAND /bin/bash
SUDO_GID 1000
SUDO_UID 1000
SUDO_USER odg
TERM xterm-256color
USER root
XDG_DATA_DIRS /usr/local/share:/usr/share:/var/lib/snapd/desktop
Install-PSResource: Value cannot be null. (Parameter 'path1')
Exception : System.ArgumentNullException: Value cannot be null. (Parameter 'path1')
at System.ArgumentNullException.Throw(String paramName)
at System.IO.Path.Combine(String path1, String path2, String path3, String path4)
at Microsoft.PowerShell.PSResourceGet.UtilClasses.Utils.GetStandardPlatformPaths(PSCmdlet psCmdlet, String& localUserDir, String& allUsersDir)
at Microsoft.PowerShell.PSResourceGet.UtilClasses.Utils.GetPathsFromEnvVarAndScope(PSCmdlet psCmdlet, Nullable`1 scope)
at Microsoft.PowerShell.PSResourceGet.UtilClasses.Utils.GetAllInstallationPaths(PSCmdlet psCmdlet, Nullable`1 scope)
at Microsoft.PowerShell.PSResourceGet.Cmdlets.InstallPSResource.BeginProcessing()
at System.Management.Automation.Cmdlet.DoBeginProcessing()
at System.Management.Automation.CommandProcessorBase.DoBegin()
TargetObject :
CategoryInfo : NotSpecified: (:) [Install-PSResource], ArgumentNullException
FullyQualifiedErrorId : System.ArgumentNullException,Microsoft.PowerShell.PSResourceGet.Cmdlets.InstallPSResource
ErrorDetails :
InvocationInfo : System.Management.Automation.InvocationInfo
ScriptStackTrace : at <ScriptBlock>, <No file>: line 1
PipelineIterationInfo : {}When I leave the HOME var intact, then Install-PSResource works fine.
pwsh -c 'gci env:; Install-PSResource -Name "Az.Accounts" -ErrorAction Stop -Verbose; Get-Error'Name Value
---- -----
_ /usr/bin/pwsh
HOME /root
LANG C.UTF-8
LESSCLOSE /usr/bin/lesspipe %s %s
LESSOPEN | /usr/bin/lesspipe %s
LOGNAME root
LS_COLORS rs=0:di=01;34:ln=01;36:mh=00:pi=40;33:so=01;35:do=01;35:bd=40;33;01:cd=40;33;01:or=40;31;01:mi=00:su=37;41:sg=30;43:ca=30;41:tw=30;42:ow=34;42:st=37;44:ex=01;32:*.tar=01;31:*.tgz=01;31:*.arc=01;31:*.arj=…
MAIL /var/mail/root
OLDPWD /root
PATH /opt/microsoft/powershell/7:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/snap/bin
PSModulePath /root/.local/share/powershell/Modules:/usr/local/share/powershell/Modules:/opt/microsoft/powershell/7/Modules
PWD /var/lib/waagent/custom-script/download/1
SGX_AESM_ADDR 1
SHELL /bin/bash
SHLVL 1
SUDO_COMMAND /bin/bash
SUDO_GID 1000
SUDO_UID 1000
SUDO_USER odg
TERM xterm-256color
USER root
XDG_DATA_DIRS /usr/local/share:/usr/share:/var/lib/snapd/desktop
VERBOSE: All paths to search: '/root/.local/share/powershell/Modules'
VERBOSE: All paths to search: '/root/.local/share/powershell/Scripts'
VERBOSE: Retrieving directories in the path '/root/.local/share/powershell/Modules'
VERBOSE: Retrieving directories in the path '/root/.local/share/powershell/Scripts'
VERBOSE: All paths to search: '/root/.local/share/powershell/Modules/Az.Storage'
VERBOSE: All paths to search: '/root/.local/share/powershell/Modules/Az.Accounts'
VERBOSE: Attempting to search for packages in 'PSGallery'
WARNING: Resource 'Az.Accounts' with version '2.15.0' is already installed. If you would like to reinstall, please run the cmdlet again with the -Reinstall parameter
VERBOSE: Attempting to delete '/tmp/7ea3a084-7388-4b93-b7c2-051b933d1c7e'
VERBOSE: Successfully deleted '/tmp/7ea3a084-7388-4b93-b7c2-051b933d1c7e'Looking at the source code (Utils.cs#L986), there seems to be some variable shadowing going on. Note that s_tempHome is declared twice:
private static string s_tempHome = null;var s_tempHome = Path.Combine(…);Presumably this is the cause of the ArgumentNullException.
alerickson
Prerequisites
Steps to reproduce
I have an Azure Virtual Machine Scale Set (VMSS) that provides my Azure DevOps (ADO) build agents. I use the Custom Script Extension for Linux to run a script that installs dependencies on new VM instances. One of the steps in this script is using
Install-PSResourceto install some PowerShell modules. This step fails with a weird error message.Install-PSResource.Can you change
Install-PSResourcesuch that it can deal with this situation, or that it gives an error message that makes clear what it needs from the runtime environment?Expected behavior
Install-PSResourceinstalls the requested module without errors.-or-
Install-PSResourcefails with a helpful error message.Actual behavior
Install-PSResourcefails with the following error.Note that
path1does not refer to any inputs forInstall-PSResource, so it's not clear what is missing here.After this, when I SSH to the VM instance and retry the exact same
Install-PSResourcecommand, it installs the module just fine.It seems that when the post-deployment-script runs, the VM is not quite yet in a state that
Install-PSResourceexpects.Error details
Get-Error:Environment data
Get-Module Microsoft.PowerShell.PSResourceGet:$PSVersionTable:gci env::Visuals
No response