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<?xml version="1.0" encoding="UTF-8"?>
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<title>libvirt: Microsoft Hyper-V hypervisor driver</title>
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<h1>Microsoft Hyper-V hypervisor driver</h1>
<ul><li>
<a href="#project">Project Links</a>
</li><li>
<a href="#uri">Connections to the Microsoft Hyper-V driver</a>
<ul><li>
<a href="#uriformat">URI Format</a>
<ul><li>
<a href="#extraparams">Extra parameters</a>
</li></ul>
</li><li>
<a href="#auth">Authentication</a>
</li></ul>
</li></ul>
<p>
The libvirt Microsoft Hyper-V driver can manage Hyper-V 2008 R2.
</p>
<h2>
<a name="project" shape="rect" id="project">Project Links</a>
<a class="headerlink" href="#project" title="Permalink to this headline">¶</a>
</h2>
<ul><li>
The <a href="http://www.microsoft.com/hyper-v-server/" shape="rect">Microsoft Hyper-V</a>
hypervisor
</li></ul>
<h2>
<a name="uri" shape="rect" id="uri">Connections to the Microsoft Hyper-V driver</a>
<a class="headerlink" href="#uri" title="Permalink to this headline">¶</a>
</h2>
<p>
Some example remote connection URIs for the driver are:
</p>
<pre xml:space="preserve">
hyperv://example-hyperv.com (over HTTPS)
hyperv://example-hyperv.com/?transport=http (over HTTP)
</pre>
<p>
<strong>Note</strong>: In contrast to other drivers, the Hyper-V driver
is a client-side-only driver. It connects to the Hyper-V server using
WS-Management over HTTP(S). Therefore, the
<a href="remote.html" shape="rect">remote transport mechanism</a> provided by the
remote driver and libvirtd will not work, and you cannot use URIs like
<code>hyperv+ssh://example.com</code>.
</p>
<h3>
<a name="uriformat" shape="rect" id="uriformat">URI Format</a>
<a class="headerlink" href="#uriformat" title="Permalink to this headline">¶</a>
</h3>
<p>
URIs have this general form (<code>[...]</code> marks an optional part).
</p>
<pre xml:space="preserve">
hyperv://[username@]hostname[:port]/[?extraparameters]
</pre>
<p>
The default HTTPS ports is 5986. If the port parameter is given, it
overrides the default port.
</p>
<h4>
<a name="extraparams" shape="rect" id="extraparams">Extra parameters</a>
<a class="headerlink" href="#extraparams" title="Permalink to this headline">¶</a>
</h4>
<p>
Extra parameters can be added to a URI as part of the query string
(the part following <code>?</code>). A single parameter is formed by a
<code>name=value</code> pair. Multiple parameters are separated by
<code>&</code>.
</p>
<pre xml:space="preserve">
?transport=http
</pre>
<p>
The driver understands the extra parameters shown below.
</p>
<table class="top_table"><tr><th rowspan="1" colspan="1">Name</th><th rowspan="1" colspan="1">Values</th><th rowspan="1" colspan="1">Meaning</th></tr><tr><td rowspan="1" colspan="1">
<code>transport</code>
</td><td rowspan="1" colspan="1">
<code>http</code> or <code>https</code>
</td><td rowspan="1" colspan="1">
Overrides the default HTTPS transport. The default HTTP port
is 5985.
</td></tr></table>
<h3>
<a name="auth" shape="rect" id="auth">Authentication</a>
<a class="headerlink" href="#auth" title="Permalink to this headline">¶</a>
</h3>
<p>
In order to perform any useful operation the driver needs to log into
the Hyper-V server. Therefore, only <code>virConnectOpenAuth</code> can
be used to connect to an Hyper-V server, <code>virConnectOpen</code> and
<code>virConnectOpenReadOnly</code> don't work.
To log into an Hyper-V server the driver will request credentials using
the callback passed to the <code>virConnectOpenAuth</code> function.
The driver passes the hostname as challenge parameter to the callback.
</p>
<p>
<strong>Note</strong>: Currently only <code>Basic</code> authentication
is supported by libvirt. This method is disabled by default on the
Hyper-V server and can be enabled via the WinRM commandline tool.
</p>
<pre xml:space="preserve">
winrm set winrm/config/service/auth @{Basic="true"}
</pre>
<p>
To allow <code>Basic</code> authentication with HTTP transport WinRM
needs to allow unencrypted communication. This can be enabled via the
WinRM commandline tool. However, this is not the recommended
communication mode.
</p>
<pre xml:space="preserve">
winrm set winrm/config/service @{AllowUnencrypted="true"}
</pre>
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