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PiKVM V4 Mini & Plus
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DIY PiKVM V2
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Tuning HDMI EDID
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HDMI passthrough
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Peripheral devices
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Peripheral devices
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Keyboard & mouse
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Keyboard & mouse
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Mouse modes
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Mouse jiggler
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Pico HID (USB, PS/2)
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Bluetooth HID
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Mass Storage Drive
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Ethernet-over-USB
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Serial-over-USB
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Dynamic USB configuration
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GPIO (pins, relays, lamps, etc)
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Advanced usage
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Advanced usage
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On-boot configuration
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Using VNC
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Multiport KVM-over-IP
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Wake-on-LAN the server
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IPMI & Redfish integration
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IPMI & Redfish integration
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IPMI BMC
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IPMI SoL
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Redfish
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Persistent storage
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<div><h1 id="ipmi-redfish">IPMI &amp; Redfish<a class="headerlink" href="#ipmi-redfish" title="Permanent link"></a></h1>
<div class="admonition info">
<p class="admonition-title">Info</p>
<p>This page is about the server-side emulation (if you want to manage PiKVM using ipmitool or so). If you want to use the PiKVM Web UI to manage the server using IPMI (that is, as an IPMI client), see <a href="../gpio/">GPIO functions with IPMI plugin</a>.</p>
</div>
<h2 id="ipmi-bmc">IPMI BMC<a class="headerlink" href="#ipmi-bmc" title="Permanent link"></a></h2>
<p>IPMI is an <a href="https://en.wikipedia.org/wiki/Intelligent_Platform_Management_Interface">old protocol</a> for remote server management.
It can be useful for managing a large number of machines with PiKVM. Its advantage is that it is supported by many enterprise systems.</p>
<div class="admonition warning">
<p class="admonition-title">Warning</p>
<p>Although PiKVM supports the IPMI protocol, we strongly recommend that you <strong>DO NOT USE IT</strong> outside of trusted networks due to the protocol's <a href="https://github.com/NitescuLucian/nliplace.com.blog.drafts">insecurity</a>. Use Redfish or <a href="../api/">KVMD API</a> instead of it. Also IPMI can not work with <a href="../auth/#two-factor-authentication">2FA</a>.</p>
</div>
<p>To enable IPMI BMC follow these steps:</p>
<ol>
<li>
<p>Switch the filesystem to the RW-mode:</p>
<div class="highlight"><pre><span></span><code># rw
</code></pre></div>
</li>
<li>
<p>Setup IPMI account in file <code>/etc/kvmd/ipmipasswd</code>.</p>
</li>
<li>
<p>Enable <code>kvmd-ipmi</code> daemon:</p>
<div class="highlight"><pre><span></span><code># systemctl enable --now kvmd-ipmi
</code></pre></div>
</li>
<li>
<p>Switch the filesystem back to the RO:</p>
<div class="highlight"><pre><span></span><code># ro
</code></pre></div>
</li>
<li>
<p>Here some examples (on the remote PC):</p>
<div class="highlight"><pre><span></span><code>$ ipmitool -I lanplus -U admin -P admin -H pikvm power status
$ ipmitool -I lanplus -U admin -P admin -H pikvm power on
</code></pre></div>
</li>
</ol>
<h2 id="ipmi-sol">IPMI SoL<a class="headerlink" href="#ipmi-sol" title="Permanent link"></a></h2>
<p>IPMI supports the ability to get console access to the server using Serial-over-LAN. PiKVM can act as a proxy for your server's COM port.</p>
<div class="admonition warning">
<p class="admonition-title">Warning</p>
<p>Although PiKVM supports the IPMI protocol, we strongly recommend that you <strong>DO NOT USE IT</strong> outside of trusted networks due to the protocol's <a href="https://github.com/NitescuLucian/nliplace.com.blog.drafts">insecurity</a>. Use Redfish or <a href="../api/">KVMD API</a> instead of it.</p>
</div>
<p>To use this feature, you will need a USB-COM adapter that you need to connect to the PiKVM. The COM port of the adapter need to be connected to the server. As with IPMI BMC, you need to configure <code>kvmd-vnc</code> and add the following configuration to <code>/etc/kvmd/override.yaml</code>:</p>
<div class="highlight"><pre><span></span><code><span class="nt">ipmi</span><span class="p">:</span>
<span class="w"> </span><span class="nt">sol</span><span class="p">:</span>
<span class="w"> </span><span class="nt">device</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">/dev/ttyUSB0</span><span class="w"> </span><span class="c1"># Path of your USB-COM adapter</span>
<span class="w"> </span><span class="nt">speed</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">115200</span>
</code></pre></div>
<p>After enabling <code>kvmd-ipmi</code>, all requests that it receives over the network regarding the COM port will be forwarded to your server. For example:</p>
<div class="highlight"><pre><span></span><code>$ ipmitool -I lanplus -U admin -P admin -H pikvm sol activate
</code></pre></div>
<h2 id="redfish">Redfish<a class="headerlink" href="#redfish" title="Permanent link"></a></h2>
<p><a href="https://www.dmtf.org/standards/redfish">Redfish</a> is a more modern server management protocol designed to replace IPMI.
It is based on HTTP and fixes many security issues. If possible, we recommend using it instead of IPMI, or using the <a href="../api/">KVMD API</a>.</p>
<p>There're not special actions required to use Redfish. In addition, Redfish will use regular PiKVM credentials.
But for systems that have been upgraded to KVMD 2.0 (not a clean image installation), you will probably need to edit
the <code>/etc/kvmd/nginx/kvmd.ctx-server.conf</code> file to add these lines at the end:</p>
<div class="highlight"><pre><span></span><code><span class="k">location</span><span class="w"> </span><span class="s">/redfish</span><span class="w"> </span><span class="p">{</span>
<span class="w"> </span><span class="kn">proxy_pass</span><span class="w"> </span><span class="s">http://kvmd</span><span class="p">;</span>
<span class="w"> </span><span class="kn">include</span><span class="w"> </span><span class="s">/etc/kvmd/nginx/loc-proxy.conf</span><span class="p">;</span>
<span class="w"> </span><span class="kn">auth_request</span><span class="w"> </span><span class="no">off</span><span class="p">;</span>
<span class="p">}</span>
</code></pre></div>
<div class="admonition info">
<p class="admonition-title">Info</p>
<p>Don't be confused by the parameter <code>auth_request off</code>. KVMD performs authorization on its own. The only open HTTP entrypoint is <code>/redfish/v1</code>, which returns a static document and does not change the state of the PiKVM. It's safe.</p>
</div>
<p>If there is a file in your system after the update <code>/etc/kvmd/nginx/kvmd.ctx-server.conf.pacnew</code> you can just move it:</p>
<div class="highlight"><pre><span></span><code># mv /etc/kvmd/nginx/kvmd.ctx-server.conf.pacnew /etc/kvmd/nginx/kvmd.ctx-server.conf
</code></pre></div>
<div class="admonition warning">
<p class="admonition-title">Warning</p>
<p>Be careful not to lose your local changes if you have done anything with this file before.</p>
</div>
<p>To access the Redfish API, use HTTP Basic Auth. Also you can use the <a href="https://github.com/DMTF/Redfishtool">redfishtool</a>:</p>
<div class="highlight"><pre><span></span><code>$ redfishtool -S Never -r pikvm root
$ redfishtool -S Never -u admin -p admin -r pikvm Systems
$ redfishtool -S Never -u admin -p admin -r pikvm Systems reset ForceOff
</code></pre></div></div>
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