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===========================
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Spinning up Windows Minions
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===========================
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It is possible to use Salt Cloud to spin up Windows instances, and then install
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Salt on them. This functionality is available on all cloud providers that are
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supported by Salt Cloud. However, it may not necessarily be available on all
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Windows images.
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Requirements
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============
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Salt Cloud makes use of `impacket` and `winexe` to set up the Windows Salt
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Minion installer.
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`impacket` is usually available as either the `impacket` or the
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`python-impacket` package, depending on the distribution. More information on
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`impacket` can be found at the project home:
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* `impacket project home`__
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.. __: https://code.google.com/p/impacket/
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`winexe` is less commonly available in distribution-specific repositories.
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However, it is currently being built for various distributions in 3rd party
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channels:
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* `RPMs at pbone.net`__
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.. __: http://rpm.pbone.net/index.php3?stat=3&search=winexe
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* `OpenSuse Build Service`__
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.. __: http://software.opensuse.org/package/winexe
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Optionally WinRM can be used instead of `winexe` if the python module `pywinrm`
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is available and WinRM is supported on the target Windows version. Information
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on pywinrm can be found at the project home:
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* `pywinrm project home`__
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.. __: https://github.com/diyan/pywinrm
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Additionally, a copy of the Salt Minion Windows installer must be present on
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the system on which Salt Cloud is running. This installer may be downloaded
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from saltstack.com:
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* `SaltStack Download Area`__
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.. __: http://docs.saltstack.com/downloads/
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Firewall Settings
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=================
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Because Salt Cloud makes use of `smbclient` and `winexe`, port 445 must be open
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on the target image. This port is not generally open by default on a standard
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Windows distribution, and care must be taken to use an image in which this port
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is open, or the Windows firewall is disabled.
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If supported by the cloud provider, a PowerShell script may be used to open up
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this port automatically, using the cloud provider's `userdata`. The following
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script would open up port 445, and apply the changes:
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.. code-block:: powershell
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<powershell>
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New-NetFirewallRule -Name "SMB445" -DisplayName "SMB445" -Protocol TCP -LocalPort 445
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Set-Item (dir wsman:\localhost\Listener\*\Port -Recurse).pspath 445 -Force
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Restart-Service winrm
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</powershell>
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For EC2, this script may be saved as a file, and specified in the provider or
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profile configuration as `userdata_file`. For instance:
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.. code-block:: yaml
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userdata_file: /etc/salt/windows-firewall.ps1
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Configuration
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=============
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Configuration is set as usual, with some extra configuration settings. The
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location of the Windows installer on the machine that Salt Cloud is running on
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must be specified. This may be done in any of the regular configuration files
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(main, providers, profiles, maps). For example:
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Setting the installer in ``/etc/salt/cloud.providers``:
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.. code-block:: yaml
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my-softlayer:
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provider: softlayer
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user: MYUSER1138
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apikey: 'e3b68aa711e6deadc62d5b76355674beef7cc3116062ddbacafe5f7e465bfdc9'
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minion:
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master: saltmaster.example.com
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win_installer: /root/Salt-Minion-2014.7.0-AMD64-Setup.exe
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win_username: Administrator
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win_password: letmein
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smb_port: 445
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The default Windows user is `Administrator`, and the default Windows password
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is blank.
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If WinRM is to be used ``use_winrm`` needs to be set to `True`.
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Auto-Generated Passwords on EC2
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===============================
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On EC2, when the `win_password` is set to `auto`, Salt Cloud will query EC2 for
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an auto-generated password. This password is expected to take at least 4 minutes
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to generate, adding additional time to the deploy process.
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When the EC2 API is queried for the auto-generated password, it will be returned
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in a message encrypted with the specified `keyname`. This requires that the
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appropriate `private_key` file is also specified. Such a profile configuration
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might look like:
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.. code-block:: yaml
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windows-server-2012:
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provider: my-ec2-config
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image: ami-c49c0dac
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size: m1.small
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securitygroup: windows
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keyname: mykey
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private_key: /root/mykey.pem
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userdata_file: /etc/salt/windows-firewall.ps1
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win_installer: /root/Salt-Minion-2014.7.0-AMD64-Setup.exe
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win_username: Administrator
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win_password: auto
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