View source for Login to ALICE using PowerShell

==[[Login to ALICE using PowerShell|Powershell]]==

===Prerequisites===
For Windows 10 build 1809 and higher, OpenSSH is available for PowerShell. This allows you to use PowerShell to connect to ALICE using ssh without any additional third-party tools for most purposes.

Check if you already have OpenSSH installed, by opening PowerShell and type 
 ssh -V
This should show someting like <code>OpenSSH_for_Windows_7.7p1, LibreSSL 2.6.5</code>. If it does not work, then install OpenSSH for PowerShell before continuing.

===Known issues===
There are three main limitations to using ssh with PowerShell.
 # You cannot do X11 forwarding without an additional third-party tool.
 # You cannot use the <code>ProxyJump</code> setting, but <code>ProxyCommand</code> works.
 # The command <code>ssh-copy-id</code> is not available.

===Setting up your ssh connection===
You can set up your ssh connection to ALICE in a very similar way to Linux. While PowerShell has its own command syntax and names, there are alias for the most common Linux-type commands and we will use these from here on.

Open PowerShell and go to your HOME directory on Windows (<code>C:\Users\<YOUR_WINDOWS_USERNAME></code>):
 cd $HOME
or use the Windows Explorer

Check if you have a directory called <code>.ssh</code> in your HOME. If not, create one. You can use <code>mkdir .ssh</code> in PowerShell.

Change into the directory <code>.ssh</code> and create a file <code>config</code>. Since PowerShell does not have a way of directly editing text files, you need to use another text editor of your choice for this.

In your text editor, add the ssh configuration settings described here: [[Login to ALICE from Linux#SSH tunneling for older versions of OpenSSH|SSH tunneling for older versions of OpenSSH]]

===Add monitoring tools in PowerShell===
Just like on Linux, it is possible to setup your ssh connection so that you can access cluster monintoring tools. Simply add the settings described here: [[Login to ALICE from Linux#Add monitoring tools|Add monitoring tools on Linux]]

Once connected you should be able to access the cluster monitoring in your browser just like this: [[Login to ALICE from Linux#Accessing monitoring tools|Accessing monitoring tools on Linux]]

===Password-less login with ssh keys in PowerShell===
Password-less login with ssh keys is possible with PowerShell. However, the procedure is slightly different from Linux because the command <code>ssh-copy-id</code> is not available.

First create a set of ssh keys using <code>ssh-keygen.exe</code> in PowerShell.  

Once you have a set of keys, you need to copy them manually to the ssh gateway and one of the login nodes. To this purpose, follow the steps described here: