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<div class="section" id="non-standard-configuration">
<h1>Non standard configuration<a class="headerlink" href="#non-standard-configuration" title="Permalink to this headline">¶</a></h1>
<div class="section" id="use-it-with-my-own-web-server">
<h2>Use it with my own Web Server<a class="headerlink" href="#use-it-with-my-own-web-server" title="Permalink to this headline">¶</a></h2>
<p>In this example I will use <strong>nginx</strong> server. You could use the same tactic with
your preferred web server.</p>
<p>Let’s first update the configuration file to disable the embedded web server.
Edit the file <code class="docutils literal"><span class="pre">/etc/rpimonitord.conf</span></code> and set daemon.noserver=1.</p>
<p>Then restart RPi-Monitor with the command:</p>
<div class="highlight-default"><div class="highlight"><pre><span></span><span class="n">sudo</span> <span class="n">service</span> <span class="n">rpimonitor</span> <span class="n">restart</span>
</pre></div>
</div>
<p>The embedded server is no more running so, we will need to configure another server to access the data.</p>
<p>For nginx we will create the file <code class="docutils literal"><span class="pre">/etc/nginx/sites-enabled/rpimonitor</span></code> with the following content:</p>
<div class="highlight-default"><div class="highlight"><pre><span></span><span class="n">server</span> <span class="p">{</span>
<span class="n">listen</span> <span class="mi">80</span><span class="p">;</span>
<span class="n">index</span> <span class="n">index</span><span class="o">.</span><span class="n">html</span><span class="p">;</span>
<span class="n">root</span> <span class="o">/</span><span class="n">usr</span><span class="o">/</span><span class="n">share</span><span class="o">/</span><span class="n">rpimonitor</span><span class="o">/</span><span class="n">web</span><span class="p">;</span>
<span class="p">}</span>
</pre></div>
</div>
<p>and restart the server with the command:</p>
<div class="highlight-default"><div class="highlight"><pre><span></span><span class="n">sudo</span> <span class="n">service</span> <span class="n">nginx</span> <span class="n">restart</span>
</pre></div>
</div>
<p>Now you can reach <strong>RPi-Monitor</strong> with your favorite browser on your favorite web server.</p>
</div>
<div class="section" id="rpi-monitor-on-sunxi">
<h2>RPi-Monitor on sunxi<a class="headerlink" href="#rpi-monitor-on-sunxi" title="Permalink to this headline">¶</a></h2>
<p><strong>Author</strong>: Thomas Kaiser</p>
<div class="section" id="overview">
<h3>Overview<a class="headerlink" href="#overview" title="Permalink to this headline">¶</a></h3>
<p><strong>RPi-Monitor</strong> is a self monitoring application designed to run on Raspberry Pi.</p>
<p>With a few adjustments it can also be used on numerous <a class="reference external" href="http://linux-sunxi.org/Main_Page">sunxi devices</a>
that are using the <a class="reference external" href="http://linux-sunxi.org/Category:A10_Boards">A10</a>,
<a class="reference external" href="http://linux-sunxi.org/Category:A13_Boards">A13</a> or
<a class="reference external" href="http://linux-sunxi.org/Category:A20_Boards">A20</a> SoC since they all feature
the same power management unit <a class="reference external" href="http://linux-sunxi.org/AXP209">AXP209</a>.</p>
</div>
<div class="section" id="installation-configuration">
<h3>Installation/Configuration<a class="headerlink" href="#installation-configuration" title="Permalink to this headline">¶</a></h3>
<p>All you have to do is to relink RPi-Monitor’s <cite>data.conf</cite> to <cite>sunxi_axp209.conf</cite>,
ensure that <cite>/usr/share/rpimonitor/scripts/sunxi-temp-daemon.sh</cite> is running as
root and restart the <em>rpimonitor</em> service/daemon afterwards:</p>
<div class="highlight-default"><div class="highlight"><pre><span></span><span class="c1"># stop rpimonitor</span>
<span class="n">ln</span> <span class="o">-</span><span class="n">f</span> <span class="o">-</span><span class="n">s</span> <span class="o">/</span><span class="n">etc</span><span class="o">/</span><span class="n">rpimonitor</span><span class="o">/</span><span class="n">template</span><span class="o">/</span><span class="n">sunxi_axp209</span><span class="o">.</span><span class="n">conf</span> <span class="o">/</span><span class="n">etc</span><span class="o">/</span><span class="n">rpimonitor</span><span class="o">/</span><span class="n">data</span><span class="o">.</span><span class="n">conf</span>
<span class="n">nohup</span> <span class="o">/</span><span class="n">usr</span><span class="o">/</span><span class="n">share</span><span class="o">/</span><span class="n">rpimonitor</span><span class="o">/</span><span class="n">scripts</span><span class="o">/</span><span class="n">sunxi</span><span class="o">-</span><span class="n">temp</span><span class="o">-</span><span class="n">daemon</span><span class="o">.</span><span class="n">sh</span> <span class="o">&</span>
<span class="c1"># start rpimonitor</span>
</pre></div>
</div>
<p>You should ensure that the <cite>sunxi-temp-daemon.sh</cite> daemon is started at boot, eg.
by adding <cite>/usr/share/rpimonitor/scripts/sunxi-temp-daemon.sh &</cite> to
<cite>/etc/rc.local</cite> or creating an appropriate systemd service. We chose a daemon
approach since otherwise it wasn’t possible to gather thermal values of connected
SATA disks and the SoC’s temperature under high load. Now the daemon collects
these thermal values in a loop and writes them to 3 files below /tmp/ where
they can be fetched by rpimonitor.</p>
</div>
<div class="section" id="monitoring-disks">
<h3>Monitoring disks<a class="headerlink" href="#monitoring-disks" title="Permalink to this headline">¶</a></h3>
<p>If you use a SATA disk and want its temperature to be monitored you’ll need to
install the <em>hddtemp</em> package since the daemon relies on the <cite>/usr/sbin/hddtemp</cite>
binary. If you’ve a USB disk instead that is
[able to be queried using S.M.A.R.T.](<a class="reference external" href="https://www.smartmontools.org/wiki/Supported_USB-Devices">https://www.smartmontools.org/wiki/Supported_USB-Devices</a>)
then you might install the <em>smartmontools</em> package and replace the <cite>hddtemp</cite> call in
<cite>sunxi-temp-daemon.sh</cite> with an appropriate <cite>smartctl -d</cite> call:</p>
<div class="highlight-default"><div class="highlight"><pre><span></span><span class="o">/</span><span class="n">usr</span><span class="o">/</span><span class="n">sbin</span><span class="o">/</span><span class="n">smartctl</span> <span class="o">-</span><span class="n">d</span> <span class="n">sat</span><span class="o">|</span><span class="n">usbsunplus</span><span class="o">|</span><span class="n">usbcypress</span><span class="o">|</span><span class="n">usbjmicron</span><span class="o">|</span><span class="n">usbprolific</span> <span class="o">-</span><span class="n">a</span> <span class="o">/</span><span class="n">dev</span><span class="o">/</span><span class="n">sda</span> <span class="o">|</span> <span class="n">awk</span> <span class="o">-</span><span class="n">F</span><span class="s2">" "</span> <span class="s1">'/Temperature_Cel/ {print $10}'</span>
</pre></div>
</div>
<p>You’ve to try out which expressions work for your combination of USB enclosure
and disk since different enclosures can be accessed differently and temperature
S.M.A.R.T. attributes aren’t standardized. Still using <cite>hddtemp</cite>
is recommended since it doesn’t wake up disks that are in standby/sleep mode.
Using <cite>smartctl</cite> you can create data sources for any other
[relevant S.M.A.R.T. attribute](<a class="reference external" href="https://en.wikipedia.org/wiki/S.M.A.R.T">https://en.wikipedia.org/wiki/S.M.A.R.T</a>.#Known_ATA_S.M.A.R.T._attributes)
you’re interested in, especially those related to drive health. But this is left
as an excercise for the reader and a better job for
[smartd](<a class="reference external" href="https://www.smartmontools.org/browser/trunk/smartmontools/smartd.8.in">https://www.smartmontools.org/browser/trunk/smartmontools/smartd.8.in</a>).</p>
</div>
<div class="section" id="caveats">
<h3>Caveats<a class="headerlink" href="#caveats" title="Permalink to this headline">¶</a></h3>
<p>Most informations regarding the power management unit rely on the ability to
query the AXP209 via I2C/sysfs. A driver for kernel 3.4 provides internal
PMU informations below <cite>/sys/devices/platform/sunxi-i2c.0/i2c-0/0-0034/</cite>
but unfortunately this is still missing in mainline kernel.</p>
<p>Informations regarding [cpufreq settings](<a class="reference external" href="http://linux-sunxi.org/Cpufreq">http://linux-sunxi.org/Cpufreq</a>)
(CPU clock speed, governor) can only be queried if cpufreq support is built
into the kernel. This should apply to all 3.4.x kernels used nowadays and
with mainline kernel starting with 4.0 for A10/A13/A20 too.</p>
<p>If you use mainline kernel 4.0 or above the SoC’s temperature will be read
out using <cite>/sys/class/thermal/thermal_zone0/temp</cite>. If you’ve applied the
patches at the bottom of [this page](<a class="reference external" href="http://sunxi.montjoie.ovh">http://sunxi.montjoie.ovh</a>) and installed
the lm-sensors package it should be possible to read out at least the AXP209’s
internal thermal sensor (that is more reliable than the SoC’s) when using
mainline kernel.</p>
</div>
</div>
<div class="section" id="use-it-into-another-linux-distribution">
<h2>Use it into another Linux distribution<a class="headerlink" href="#use-it-into-another-linux-distribution" title="Permalink to this headline">¶</a></h2>
<p>RPi-Monitor has been designed to run into a Raspberry Pi but as it is using only
standard Linux resources, it is not hardware dependent. A simple configuration
update can make it run on Ubuntu, CentOS or any other distribution.</p>
<p>Ubuntu is a Debian based distribution as Raspbian. The installation can then be
done using the deb package available for each releases. Download and install
the package as described in this previous post.</p>
<p>With CentOS and withe any non Debian based distribution it will required to
perform a manual installation.</p>
<p>First install the perl dependencies: <a class="reference external" href="HTTP::Daemon">HTTP::Daemon</a> (<code class="docutils literal"><span class="pre">perl-libwww-perl</span></code>), RRD (<code class="docutils literal"><span class="pre">rrdtool-perl</span></code>) and JSON(<code class="docutils literal"><span class="pre">perl-JSON</span></code>)</p>
<p>Connect to github and select the latest stable branch on the top left dropdown list.</p>
<p>Then download the code as zip file from the link “Download zip” visible at the bottom of the right menu.</p>
<p>Unpack it.</p>
<div class="highlight-default"><div class="highlight"><pre><span></span><span class="n">unzip</span> <span class="n">Version</span><span class="o">-</span><span class="mf">2.</span><span class="n">x</span><span class="o">.</span><span class="n">zip</span>
</pre></div>
</div>
<p>Finally install rpimonitor manually:</p>
<div class="highlight-default"><div class="highlight"><pre><span></span><span class="n">su</span> <span class="o">-</span>
<span class="n">mv</span> <span class="n">Version</span><span class="o">-</span><span class="mf">2.</span><span class="n">x</span><span class="o">/</span><span class="n">rpimonitor</span> <span class="o">/</span><span class="n">usr</span><span class="o">/</span><span class="n">local</span>
</pre></div>
</div>
<p>You can now start RPi-Monitor with the following commands:</p>
<div class="highlight-default"><div class="highlight"><pre><span></span><span class="n">cd</span> <span class="o">/</span><span class="n">usr</span><span class="o">/</span><span class="n">local</span><span class="o">/</span><span class="n">rpimonitor</span>
<span class="o">./</span><span class="n">rpimonitird</span> <span class="o">-</span><span class="n">c</span> <span class="n">rpimonitor</span><span class="o">.</span><span class="n">conf</span> <span class="o">-</span><span class="n">c</span> <span class="n">default</span><span class="o">.</span><span class="n">conf</span>
</pre></div>
</div>
<p>Note: I will not describe here how to configure the auto startup since each
distribution has its own way to do so. An upstart script is available into
<strong>RPi-Monitor</strong> github tools directory, it may help you in such an action.</p>
<p>Once the installation is done you can start RPi-Monitor and connect to it
with your favorite browser.</p>
<p>You may notice that some values are undefined or displayed as NaN (Not a Number).
To fix these issues, you will have to update the configuration file
(rpimonitord.conf or default.conf in /etc/ + /etc/rpimonitord.conf.d or
/usr/local/rpimonitor/ depending on your installation).</p>
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