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提交 bfe9f25b 编写于 作者: D Daniel P. Berrangé
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docs: move docs about remote driver URIs into URI docs 

The docs about remote URIs in uri.html are somewhat sparse with the full
docs being in remote.html. Move all the URI content from remote.html
into uri.html so the user only needs to look in one place for URI info.
Reviewed-by: NMichal Privoznik <mprivozn@redhat.com>
Signed-off-by: NDaniel P. Berrangé <berrange@redhat.com>
上级 df99aa31
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Showing with 238 addition and 303 deletion
docs/remote.html.in
浏览文件 @ bfe9f25b
......@@ -34,7 +34,7 @@ the system-wide QEMU daemon on a remote machine called
<code>qemu://compute1.libvirt.org/system</code>.
</p>
<p>
The <a href="#Remote_URI_reference">section on remote URIs</a>
The <a href="uri.html#URI_remote">section on remote URIs</a>
describes in more detail these remote URIs.
</p>
<p>
......@@ -109,279 +109,9 @@ even with graphical management applications. As with the classic ssh transport
netcat is required on the remote side.</dd>
</dl>
<p>
The default transport, if no other is specified, is <code>tls</code>.
</p>
<h2>
<a id="Remote_URI_reference">Remote URIs</a>
</h2>
<p>
See also: <a href="uri.html">documentation on ordinary ("local") URIs</a>.
</p>
<p>
Remote URIs have the general form ("[...]" meaning an optional part):
</p>
<p><code>driver</code>[<code>+transport</code>]<code>://</code>[<code>username@</code>][<code>hostname</code>][<code>:port</code>]<code>/</code>[<code>path</code>][<code>?extraparameters</code>]
</p>
<p>
Either the transport or the hostname must be given in order
to distinguish this from a local URI.
</p>
<p>
Some examples:
</p>
<ul>
<li><code>xen+ssh://rjones@towada/system</code><br/> &#x2014; Connect to a
remote Xen hypervisor on host <code>towada</code> using ssh transport and ssh
username <code>rjones</code>.
</li>
<li><code>xen://towada/system</code><br/> &#x2014; Connect to a
remote Xen hypervisor on host <code>towada</code> using TLS.
</li>
<li><code>xen://towada/system?no_verify=1</code><br/> &#x2014; Connect to a
remote Xen hypervisor on host <code>towada</code> using TLS. Do not verify
the server's certificate.
</li>
<li><code>qemu+unix:///system?socket=/opt/libvirt/run/libvirt/libvirt-sock</code><br/> &#x2014;
Connect to the local qemu instances over a non-standard
Unix socket (the full path to the Unix socket is
supplied explicitly in this case).
</li>
<li><code>test+tcp://localhost:5000/default</code><br/> &#x2014;
Connect to a libvirtd daemon offering unencrypted TCP/IP connections
on localhost port 5000 and use the test driver with default
settings.
</li>
<li><code>qemu+libssh2://user@host/system?known_hosts=/home/user/.ssh/known_hosts</code><br/> &#x2014;
Connect to a remote host using a ssh connection with the libssh2 driver
and use a different known_hosts file.</li>
<li><code>qemu+libssh://user@host/system?known_hosts=/home/user/.ssh/known_hosts</code><br/> &#x2014;
Connect to a remote host using a ssh connection with the libssh driver
and use a different known_hosts file.</li>
</ul>
<h3>
<a id="Remote_URI_parameters">Extra parameters</a>
</h3>
<p>
Extra parameters can be added to remote URIs as part
of the query string (the part following <q><code>?</code></q>).
Remote URIs understand the extra parameters shown below.
Any others are passed unmodified through to the back end.
Note that parameter values must be
<a href="http://xmlsoft.org/html/libxml-uri.html#xmlURIEscapeStr">URI-escaped</a>.
</p>
<table class="top_table">
<tr>
<th> Name </th>
<th> Transports </th>
<th> Meaning </th>
</tr>
<tr>
<td>
<code>name</code>
</td>
<td>
<i>any transport</i>
</td>
<td>
The name passed to the remote virConnectOpen function. The
name is normally formed by removing transport, hostname, port
number, username and extra parameters from the remote URI, but in certain
very complex cases it may be better to supply the name explicitly.
</td>
</tr>
<tr>
<td colspan="2"/>
<td> Example: <code>name=qemu:///system</code> </td>
</tr>
<tr>
<td>
<code>tls_priority</code>
</td>
<td> tls </td>
<td>
A vaid GNUTLS priority string
</td>
</tr>
<tr>
<td colspan="2"/>
<td> Example: <code>tls_priority=NORMAL:-VERS-SSL3.0</code> </td>
</tr>
<tr>
<td>
<code>mode</code>
</td>
<td> unix, ssh, libssh, libssh2 </td>
<td>
<dl>
<dt><code>auto</code></dt><dd>automatically determine the daemon</dd>
<dt><code>direct</code></dt><dd>connect to per-driver daemons</dd>
<dt><code>legacy</code></dt><dd>connect to libvirtd</dd>
</dl>
Can also be set in <code>libvirt.conf</code> as <code>remote_mode</code>
</td>
</tr>
<tr>
<td colspan="2"/>
<td> Example: <code>mode=direct</code> </td>
</tr>
<tr>
<td>
<code>command</code>
</td>
<td> ssh, ext </td>
<td>
The external command. For ext transport this is required.
For ssh the default is <code>ssh</code>.
The PATH is searched for the command.
</td>
</tr>
<tr>
<td colspan="2"/>
<td> Example: <code>command=/opt/openssh/bin/ssh</code> </td>
</tr>
<tr>
<td>
<code>socket</code>
</td>
<td> unix, ssh, libssh2, libssh </td>
<td>
The path to the Unix domain socket, which overrides the
compiled-in default. For ssh transport, this is passed to
the remote netcat command (see next).
</td>
</tr>
<tr>
<td colspan="2"/>
<td> Example: <code>socket=/opt/libvirt/run/libvirt/libvirt-sock</code> </td>
</tr>
<tr>
<td>
<code>netcat</code>
</td>
<td> ssh, libssh2, libssh </td>
<td>
The name of the netcat command on the remote machine.
The default is <code>nc</code>. For ssh transport, libvirt
constructs an ssh command which looks like:
<pre><i>command</i> -p <i>port</i> [-l <i>username</i>] <i>hostname</i> <i>netcat</i> -U <i>socket</i>
</pre>
where <i>port</i>, <i>username</i>, <i>hostname</i> can be
specified as part of the remote URI, and <i>command</i>, <i>netcat</i>
and <i>socket</i> come from extra parameters (or
sensible defaults).
</td>
</tr>
<tr>
<td colspan="2"/>
<td> Example: <code>netcat=/opt/netcat/bin/nc</code> </td>
</tr>
<tr>
<td>
<code>keyfile</code>
</td>
<td> ssh, libssh2, libssh </td>
<td>
The name of the private key file to use to authentication to the remote
machine. If this option is not used the default keys are used.
</td>
</tr>
<tr>
<td colspan="2"/>
<td> Example: <code>keyfile=/root/.ssh/example_key</code> </td>
</tr>
<tr>
<td>
<code>no_verify</code>
</td>
<td> ssh, tls </td>
<td>
SSH: If set to a non-zero value, this disables client's strict host key
checking making it auto-accept new host keys. Existing host keys will
still be validated.
<br/>
<br/>
TLS: If set to a non-zero value, this disables client checks of the
server's certificate. Note that to disable server checks of
the client's certificate or IP address you must
<a href="#Remote_libvirtd_configuration">change the libvirtd
configuration</a>.
</td>
</tr>
<tr>
<td colspan="2"/>
<td> Example: <code>no_verify=1</code> </td>
</tr>
<tr>
<td>
<code>no_tty</code>
</td>
<td> ssh </td>
<td>
If set to a non-zero value, this stops ssh from asking for
a password if it cannot log in to the remote machine automatically
(eg. using ssh-agent etc.). Use this when you don't have access
to a terminal - for example in graphical programs which use libvirt.
</td>
</tr>
<tr>
<td colspan="2"/>
<td> Example: <code>no_tty=1</code> </td>
</tr>
<tr>
<td>
<code>pkipath</code>
</td>
<td> tls</td>
<td>
Specifies x509 certificates path for the client. If any of
the CA certificate, client certificate, or client key is
missing, the connection will fail with a fatal error.
</td>
</tr>
<tr>
<td colspan="2"/>
<td> Example: <code>pkipath=/tmp/pki/client</code> </td>
</tr>
<tr>
<td>
<code>known_hosts</code>
</td>
<td> libssh2, libssh </td>
<td>
Path to the known_hosts file to verify the host key against. LibSSH2 and
libssh support OpenSSH-style known_hosts files, although LibSSH2 does not
support all key types, so using files created by the OpenSSH binary may
result into truncating the known_hosts file. Thus, with LibSSH2 it's
recommended to use the default known_hosts file is located in libvirt's
client local configuration directory e.g.: ~/.config/libvirt/known_hosts.
Note: Use absolute paths.
</td>
</tr>
<tr>
<td colspan="2"/>
<td> Example: <code>known_hosts=/root/.ssh/known_hosts</code> </td>
</tr>
<tr>
<td>
<code>sshauth</code>
</td>
<td> libssh2, libssh </td>
<td>
A comma separated list of authentication methods to use. Default (is
"agent,privkey,password,keyboard-interactive". The order of the methods
is preserved. Some methods may require additional parameters.
</td>
</tr>
<tr>
<td colspan="2"/>
<td> Example: <code>sshauth=privkey,agent</code> </td>
</tr>
</table>
The choice of transport is determined by the <a href="uri.html#URI_remote">URI scheme</a>,
with <code>tls</code> as the default if no explicit transport is requested.
</p>
<h2>
<a id="Remote_libvirtd_configuration">libvirtd configuration file</a>
</h2>
......
docs/uri.html.in
浏览文件 @ bfe9f25b
......@@ -153,65 +153,270 @@ here</a>.
<a id="URI_remote">Remote URIs</a>
</h2>
<p>
Remote URIs are formed by taking ordinary local URIs and adding a
hostname and/or transport name. As a special case, using a URI
scheme of 'remote', will tell the remote libvirtd server to probe
for the optimal hypervisor driver. This is equivalent to passing
a NULL URI for a local connection. For example:
Remote URIs have the general form ("[...]" meaning an optional part):
</p>
<p><code>driver</code>[<code>+transport</code>]<code>://</code>[<code>username@</code>][<code>hostname</code>][<code>:port</code>]<code>/</code>[<code>path</code>][<code>?extraparameters</code>]
</p>
<p>
Either the transport or the hostname must be given in order
to distinguish this from a local URI.
</p>
<p>
Some examples:
</p>
<ul>
<li><code>xen+ssh://rjones@towada/system</code><br/> &#x2014; Connect to a
remote Xen hypervisor on host <code>towada</code> using ssh transport and ssh
username <code>rjones</code>.
</li>
<li><code>xen://towada/system</code><br/> &#x2014; Connect to a
remote Xen hypervisor on host <code>towada</code> using TLS.
</li>
<li><code>xen://towada/system?no_verify=1</code><br/> &#x2014; Connect to a
remote Xen hypervisor on host <code>towada</code> using TLS. Do not verify
the server's certificate.
</li>
<li><code>qemu+unix:///system?socket=/opt/libvirt/run/libvirt/libvirt-sock</code><br/> &#x2014;
Connect to the local qemu instances over a non-standard
Unix socket (the full path to the Unix socket is
supplied explicitly in this case).
</li>
<li><code>test+tcp://localhost:5000/default</code><br/> &#x2014;
Connect to a libvirtd daemon offering unencrypted TCP/IP connections
on localhost port 5000 and use the test driver with default
settings.
</li>
<li><code>qemu+libssh2://user@host/system?known_hosts=/home/user/.ssh/known_hosts</code><br/> &#x2014;
Connect to a remote host using a ssh connection with the libssh2 driver
and use a different known_hosts file.</li>
<li><code>qemu+libssh://user@host/system?known_hosts=/home/user/.ssh/known_hosts</code><br/> &#x2014;
Connect to a remote host using a ssh connection with the libssh driver
and use a different known_hosts file.</li>
</ul>
<h3>
<a id="Remote_URI_parameters">Extra parameters</a>
</h3>
<p>
Extra parameters can be added to remote URIs as part
of the query string (the part following <q><code>?</code></q>).
Remote URIs understand the extra parameters shown below.
Any others are passed unmodified through to the back end.
Note that parameter values must be
<a href="http://xmlsoft.org/html/libxml-uri.html#xmlURIEscapeStr">URI-escaped</a>.
</p>
<table class="top_table">
<tr>
<th> Local URI </th>
<th> Remote URI </th>
<th> Name </th>
<th> Transports </th>
<th> Meaning </th>
</tr>
<tr>
<td>
<code>xen:///system</code>
<code>name</code>
</td>
<td>
<code>xen://oirase/system</code>
<i>any transport</i>
</td>
<td> Connect to the Xen hypervisor running on host <code>oirase</code>
using TLS. </td>
<td>
The name passed to the remote virConnectOpen function. The
name is normally formed by removing transport, hostname, port
number, username and extra parameters from the remote URI, but in certain
very complex cases it may be better to supply the name explicitly.
</td>
</tr>
<tr>
<td colspan="2"/>
<td> Example: <code>name=qemu:///system</code> </td>
</tr>
<tr>
<td>
<code>NULL</code>
<code>tls_priority</code>
</td>
<td> tls </td>
<td>
<code>remote://oirase/</code>
A vaid GNUTLS priority string
</td>
</tr>
<tr>
<td colspan="2"/>
<td> Example: <code>tls_priority=NORMAL:-VERS-SSL3.0</code> </td>
</tr>
<tr>
<td>
<code>mode</code>
</td>
<td> unix, ssh, libssh, libssh2 </td>
<td>
<dl>
<dt><code>auto</code></dt><dd>automatically determine the daemon</dd>
<dt><code>direct</code></dt><dd>connect to per-driver daemons</dd>
<dt><code>legacy</code></dt><dd>connect to libvirtd</dd>
</dl>
Can also be set in <code>libvirt.conf</code> as <code>remote_mode</code>
</td>
<td> Connect to the "default" hypervisor running on host <code>oirase</code>
using TLS. </td>
</tr>
<tr>
<td colspan="2"/>
<td> Example: <code>mode=direct</code> </td>
</tr>
<tr>
<td>
<code>xen:///system</code>
<code>command</code>
</td>
<td> ssh, ext </td>
<td>
<code>xen+ssh://oirase/system</code>
The external command. For ext transport this is required.
For ssh the default is <code>ssh</code>.
The PATH is searched for the command.
</td>
</tr>
<tr>
<td colspan="2"/>
<td> Example: <code>command=/opt/openssh/bin/ssh</code> </td>
</tr>
<tr>
<td>
<code>socket</code>
</td>
<td> Connect to the Xen hypervisor running on host <code>oirase</code>
by going over an <code>ssh</code> connection. </td>
<td> unix, ssh, libssh2, libssh </td>
<td>
The path to the Unix domain socket, which overrides the
compiled-in default. For ssh transport, this is passed to
the remote netcat command (see next).
</td>
</tr>
<tr>
<td colspan="2"/>
<td> Example: <code>socket=/opt/libvirt/run/libvirt/libvirt-sock</code> </td>
</tr>
<tr>
<td>
<code>test:///default</code>
<code>netcat</code>
</td>
<td> ssh, libssh2, libssh </td>
<td>
<code>test+tcp://oirase/default</code>
The name of the netcat command on the remote machine.
The default is <code>nc</code>. For ssh transport, libvirt
constructs an ssh command which looks like:
<pre><i>command</i> -p <i>port</i> [-l <i>username</i>] <i>hostname</i> <i>netcat</i> -U <i>socket</i>
</pre>
where <i>port</i>, <i>username</i>, <i>hostname</i> can be
specified as part of the remote URI, and <i>command</i>, <i>netcat</i>
and <i>socket</i> come from extra parameters (or
sensible defaults).
</td>
</tr>
<tr>
<td colspan="2"/>
<td> Example: <code>netcat=/opt/netcat/bin/nc</code> </td>
</tr>
<tr>
<td>
<code>keyfile</code>
</td>
<td> ssh, libssh2, libssh </td>
<td>
The name of the private key file to use to authentication to the remote
machine. If this option is not used the default keys are used.
</td>
</tr>
<tr>
<td colspan="2"/>
<td> Example: <code>keyfile=/root/.ssh/example_key</code> </td>
</tr>
<tr>
<td>
<code>no_verify</code>
</td>
<td> ssh, tls </td>
<td>
SSH: If set to a non-zero value, this disables client's strict host key
checking making it auto-accept new host keys. Existing host keys will
still be validated.
<br/>
<br/>
TLS: If set to a non-zero value, this disables client checks of the
server's certificate. Note that to disable server checks of
the client's certificate or IP address you must
<a href="#Remote_libvirtd_configuration">change the libvirtd
configuration</a>.
</td>
</tr>
<tr>
<td colspan="2"/>
<td> Example: <code>no_verify=1</code> </td>
</tr>
<tr>
<td>
<code>no_tty</code>
</td>
<td> ssh </td>
<td>
If set to a non-zero value, this stops ssh from asking for
a password if it cannot log in to the remote machine automatically
(eg. using ssh-agent etc.). Use this when you don't have access
to a terminal - for example in graphical programs which use libvirt.
</td>
</tr>
<tr>
<td colspan="2"/>
<td> Example: <code>no_tty=1</code> </td>
</tr>
<tr>
<td>
<code>pkipath</code>
</td>
<td> tls</td>
<td>
Specifies x509 certificates path for the client. If any of
the CA certificate, client certificate, or client key is
missing, the connection will fail with a fatal error.
</td>
</tr>
<tr>
<td colspan="2"/>
<td> Example: <code>pkipath=/tmp/pki/client</code> </td>
</tr>
<tr>
<td>
<code>known_hosts</code>
</td>
<td> libssh2, libssh </td>
<td>
Path to the known_hosts file to verify the host key against. LibSSH2 and
libssh support OpenSSH-style known_hosts files, although LibSSH2 does not
support all key types, so using files created by the OpenSSH binary may
result into truncating the known_hosts file. Thus, with LibSSH2 it's
recommended to use the default known_hosts file is located in libvirt's
client local configuration directory e.g.: ~/.config/libvirt/known_hosts.
Note: Use absolute paths.
</td>
</tr>
<tr>
<td colspan="2"/>
<td> Example: <code>known_hosts=/root/.ssh/known_hosts</code> </td>
</tr>
<tr>
<td>
<code>sshauth</code>
</td>
<td> Connect to the test driver on host <code>oirase</code>
using an unsecured TCP connection. </td>
<td> libssh2, libssh </td>
<td>
A comma separated list of authentication methods to use. Default (is
"agent,privkey,password,keyboard-interactive". The order of the methods
is preserved. Some methods may require additional parameters.
</td>
</tr>
<tr>
<td colspan="2"/>
<td> Example: <code>sshauth=privkey,agent</code> </td>
</tr>
</table>
<p>
Remote URIs in libvirt offer a rich syntax and many features.
We refer you to <a href="remote.html#Remote_URI_reference">the libvirt
remote URI reference</a> and <a href="remote.html">full documentation
for libvirt remote support</a>.
</p>
<h2>
<a id="URI_test">test:///... Test URIs</a>
</h2>
......
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