Sorry for my English.
I have VMs on VMWare ESXi running Windows 7. All of the machines are in domain, but sometimes they leave domain, so I need to rejoin it. I wrote simple script to do this:
$credential = New-Object System.Management.Automation.PsCredential("mydomain\user", (ConvertTo-SecureString "password" -AsPlainText -Force))
Add-Computer -WorkGroupName TEMP -Credential $credential
Add-Computer -DomainName "mydomain" -Credential $credential
Restart-Computer
But it doesn't work; I have this error:
Add-Computer : This command cannot be executed on target computer('') due to following error: An existing connection was forcibly closed by the remote host.
At C:\Tools\Re-Join.ps1:2 char:13
+ Add-Computer <<<< -WorkGroupName TEMP -Credential $credential
+ CategoryInfo : InvalidOperation: (:) [Add-Computer], InvalidOperationException
+ FullyQualifiedErrorId : InvalidOperationException,Microsoft.PowerShell.Commands.AddComputerCommand<br>
If I manually join 'workgroup' and then run the script all works fine.
Here's the script I use to join domain:
$computer = Get-WmiObject Win32_ComputerSystem
$computer.JoinDomainOrWorkGroup("cloud.com" , "PASSWORD HERE", "USER", $null, 3)
Restart-Computer -Force
You may add an unjoin before the join, you won't need to reboot before rejoining the domain:
$computer.UnJoinDomainOrWorkGroup("PASSWORD HERE", "USER", 0)
Related
Below is my code, I've used the same process for connecting to sftp securely. I'm getting the error at the bottom of my post. Not sure if I'm missing a step in the creation of the key and password. Thanks.
#Set the credentials
$Password = Get-Content "c:\password.txt" |
ConvertTo-SecureString -Key (Get-Content "c:\aes.key")
$Credential = New-Object System.Management.Automation.PSCredential ('serviceaccount', $Password)
# Start a new instance of Windows PowerShell using the credentials
# stored in $Credential and run the script in $scriptblock
$powershellPath = "$env:windir\system32\windowspowershell\v1.0\powershell.exe"
$process = Start-Process $powershellPath -Credential $Credential -NoNewWindow `
-ArgumentList ("-ExecutionPolicy Bypass -noninteractive -noprofile " + $scriptBlock) -PassThru
# Script to execute in the new PowerShell instance
$scriptBlock = {
Import-Module ActiveDirectory
Get-ADUser ecarlsson | Set-ADUser -Manager bbob
Read-Host
}
I tried the code above and go the password error below.
Start-Process : This command cannot be run due to the error: The user name or password is incorrect.
At\filepath \\fV3.ps1:7 char:12
+ $process = Start-Process $powershellPath -Credential $Credential -NoN ...
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : InvalidOperation: (:) [Start-Process], InvalidOperationException
+ FullyQualifiedErrorId : InvalidOperationException,Microsoft.PowerShell.Commands.StartProcessCommand
i'am trying to excute a shell script to an azure linux virtual machine using powershell
Why I'm i using powershell? :
The virtual machine has a Copied VHD from storage account which means it doesn't have Azure VM agent
so i can't use :
azure vm extentions
azure vm Runs
i tried also using an automation runbook with the ssh module and got those errors :
Exception calling "Connect" with "0" argument(s): "Server HMAC algorithm not found" At C:\Modules\User\SSH\SSH.psm1:68 char:5 + $SSHConnection.Connect() + ~~~~~~~~~~~~~~~~~~~~~~~~ + CategoryInfo : NotSpecified: (:) [], MethodInvocationException + FullyQualifiedErrorId : SshConnectionException
and
Exception calling "RunCommand" with "1" argument(s): "Client not connected." At C:\Modules\User\SSH\SSH.psm1:69 char:5 + $ResultObject = $SSHConnection.RunCommand($ScriptBlock.ToString() ... + ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + CategoryInfo : NotSpecified: (:) [], MethodInvocationException + FullyQualifiedErrorId : SshConnectionException
which is based on my understanding caused by the vm that is missing KexAlgorithms to describe which methods are supported by the SSH daemon
What i'm trying to do now is to ssh into the vm and excute the command using powershell
here is what i got now (a Powershell scripot to ssh into the vm and excute a command):
$Password = "pwd"
$User = "pwd"
$ComputerName = "ip adress"
$Command = "touch tst.txt"
$secpasswd = ConvertTo-SecureString $Password -AsPlainText -Force
$Credentials = New-Object System.Management.Automation.PSCredential($User, $secpasswd)
echo 'logging...'
$SessionID = New-SSHSession -ComputerName $ComputerName -Credential $Credentials #Connect Over SSH
echo 'Executing...'
$output = (Invoke-SSHCommand -Index $SessionID -Command $Command).Output
Remove-SSHSession -Name $SessionID | Out-Null
im getting this error :
Invoke-SshCommand : A parameter cannot be found that matches parameter name 'Index'.
At C:\Users\octoadmin\Desktop\sign in.ps1:11 char:30
+ $output = (Invoke-SSHCommand -Index $SessionID -Command $Command).Out ...
+ ~~~~~~
+ CategoryInfo : InvalidArgument: (:) [Invoke-SshCommand], ParameterBindingException
+ FullyQualifiedErrorId : NamedParameterNotFound,Invoke-SshCommand
i looked in the internet but couldn't find anything.
apparently the ssh invoke command can't find a session with the index $SessionID
but i don't know where exactly is the problem
hope someone can guide me to the right direction.
Updating Posh-SSH worked for me with this code :
to install Posh-SSH :
Install-Module -Name Posh-SSH -RequiredVersion 2.1
The Script:
$Command = "fetch $scripturl; sh script.sh"
$secpasswd = ConvertTo-SecureString $Password -AsPlainText -Force
$Credentials = New-Object System.Management.Automation.PSCredential($User, $secpasswd)
$ComputerName = Get-AzPublicIpAddress -ResourceGroupName $RG -Name $IPName | Select-Object -ExpandProperty ipAddress
echo 'ip is : '
echo $ComputerName
echo 'logging...'
$SessionID = New-SSHSession -ComputerName $ComputerName -AcceptKey -Credential $Credentials
echo 'Exucuting...'
$Query = (Invoke-SshCommand -SSHSession $SessionID -Command $Command).Output
echo $Query
Remove-SSHSession -Name $SessionID | Out-Null
I'm new to PowerShell. I am trying to make it so I can setup a new computer connecting to the network to allow me to do certain tasks. When I run this:
$domain = "mydomain.com"
$mycred = get-credential
$credential = New-Object System.Management.Automation.PSCredential("$($domain)\$($mycred.Username)","$($mycred.Password)")
$compName = Read-Host -Prompt "Enter new computer name"
Add-Computer -DomainName $domain -newname $compName -Credential $credential -Restart
Pause
I get the error:
New-Object : Cannot find an overload for "PSCredential" and the argument count: "2".
At C:\Users\entername\Downloads\1-JoinDomainCred.ps1:7 char:15
... redential = New-Object System.Management.Automation.PSCredential("$($ ...
CategoryInfo : InvalidOperation: (:) [New-Object], MethodException
FullyQualifiedErrorId : ConstructorInvokedThrowException,Microsoft.PowerShell.Commands.NewObjectCommand
Where am I going wrong?
Get-Credential aready returns a proper credentials object. Just use that:
$mycred = Get-Credential; Add-Computer ... -Credential $mycred
PowerShell is not C#, pass the arguments as an array without the ():
$credential = New-Object System.Management.Automation.PSCredential "$($domain)\$($mycred.Username)",$mycred.Password
I'm using a PowerShell to open a session in a VM. I can run some code to write in a local folder, but I'm unable to write in a server. Even if I have all rights it gives me "Access Denied".
I'm trying to write on the server first/make folders in the server. I'm using a simple PowerShell that creates a folder.
$secpasswd = ConvertTo-SecureString 'PassWord' -AsPlainText -Force
$mycreds = New-Object System.Management.Automation.PSCredential ("UserName", $secpasswd)
$s = New-PSSession -ComputerName NameVM -Credential $mycreds
Invoke-Command -Session $s -ScriptBlock {
C:\Users\MyName\Documents\CreateFolder.ps1
}
+ CategoryInfo : PermissionDenied: (\\X\X\TestFolderVM:String) [New-Item], UnauthorizedAccessException
+ FullyQualifiedErrorId : ItemExistsUnauthorizedAccessError,Microsoft.PowerShell.Commands.NewItemCommand
+ PSComputerName : VMNAME
You got the wrong idea here. PowerShell New-PSSession creates an interactive prompt to the new computer. What you should probably be using instead is something along the lines of:
Invoke-Command -ComputerName HOSTNAME -ScriptBlock CONTENTSOFPS1 -Credentials $creds
I'm trying to set up PS Remoting/Win-RM and have the following:
$primary = 'server1'
$user = $env:UserName
$admUser = Get-Credential -UserName "domain\adm-$user" -Message 'Enter your *ADMIN* password:'
Enter-PSSession -ComputerName $primary -Credential $admUser {
hostname
}
However, this is returning the following error (I've tested this from a console and it works, so there's something wrong with my script):
Windows PowerShell credential request.
Enter your *ADMIN* password:
Password for user domain\adm-user1: ***************
Enter-PSSession : A positional parameter cannot be found that accepts argument '
hostname
'.
At line:5 char:1
+ Enter-PSSession -ComputerName $primary -Credential $admUser {
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : InvalidArgument: (:) [Enter-PSSession], ParameterBindingException
+ FullyQualifiedErrorId :PositionalParameterNotFound,Microsoft.PowerShell.Commands.EnterPSSessionCommand
What am I doing wrong? Thanks in advance!
Enter-PSSession opens a console connection to a remote system.
If you want to run a command on a remote system, you'd want to use Invoke-Command.
Also, you 100% always need to pass scriptblocks into some parameter (minus some edge cases where it's accepted by default). In this case, we need to use -Scriptblock.
Example:
Invoke-Command -ComputerName $primary -Credential $admUser -ScriptBlock {
hostname
}
or
$session = New-PSSession -ComputerName $primary -Credential $admUser
Invoke-Command -Session $session -ScriptBlock {hostname}
Invoke-Command -Session $session -ScriptBlock {$env:USERNAME}
Disconnect-PSSession -Session $session