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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<h2><span class="refentrytitle">logs.html</span></h2>
<p>logs.html — System log component</p>
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<div class="refsection">
<a name="api-logs-html-description"></a><h2>Description</h2>
<pre class="programlisting">
<iframe src="http://127.0.0.1:9090/cockpit+app/@localhost/system/logs.html"
width="600" height="400"></iframe>
</pre>
<p>This is a Cockpit component that brings up system log viewer, with filtering
capabilities. On systemd based systems this displays the entries from journal.</p>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody>
<tr>
<td><p><span class="term">Component URL</span></p></td>
<td><p><code class="code">/cockpit+app/@localhost/system/logs.html</code></p></td>
</tr>
<tr>
<td><p><span class="term">Filter by priority</span></p></td>
<td>
<p><code class="code">#?prio=notice</code></p>
<p>Filters the log to show entries below the specific priority, inclusive. These
<a class="ulink" href="https://en.wikipedia.org/wiki/Syslog#Severity_levels" target="_top">priorities are syslog level keywords</a>.
Specifying <code class="code">*</code> as a priority will show all available entries. The default
priority is <code class="code">err</code>.</p>
</td>
</tr>
<tr>
<td><p><span class="term">Filter by service</span></p></td>
<td>
<p><code class="code">#?service=sshd.service</code></p>
<p>Filters the log to show entries related to the specific service. The format of
the service is specific to the logging implementation. For journald these are systemd
service unit names.</p>
</td>
</tr>
<tr>
<td><p><span class="term">Filter by tag</span></p></td>
<td>
<p><code class="code">#?tag=kernel</code></p>
<p>Filters the log to show entries related to the specific syslog identifier.</p>
</td>
</tr>
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<td><p><span class="term">Filter by message</span></p></td>
<td>
<p><code class="code">#?grep=</code></p>
<p>Filters the log to show entries where the <code class="code">MESSAGE=</code> field matches the specified regular expression.
PERL-compatible regular expressions are used. If the pattern is all lowercase, matching is case insensitive.
Otherwise, matching is case sensitive.</p>
</td>
</tr>
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<td><p><span class="term">Filter by any field</span></p></td>
<td>
<p><code class="code">#?FIELD=VALUE</code></p>
<p>A field is referring to the components of a structured journal entry. The match must be exact.
Value can be comma separated list in which case they are automatically matched as alternatives.</p>
</td>
</tr>
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<td><p><span class="term">Start at point</span></p></td>
<td>
<p><code class="code">#?start=boot</code></p>
<p>Filters the log to show entries after the specific point in time. Valid values
are <code class="code">boot</code> (since last boot), <code class="code">last-24h</code> (last 24 hours),
<code class="code">last-week</code> (last seven days) and <code class="code">previous-boot</code> (previous boot).</p>
</td>
</tr>
<tr>
<td><p><span class="term">Follow the journal</span></p></td>
<td>
<p><code class="code">#?follow=true</code></p>
<p>Keep listening on new entries. Valid values are <code class="code">true</code> (follow) and <code class="code">false</code> (do not follow).</p>
</td>
</tr>
<tr>
<td><p><span class="term">Show log entry</span></p></td>
<td>
<p><code class="code">#/6e272d82993c4e0d...</code></p>
<p>To show a specific log entry, put the log entry cursor in a path after
the hash above. Note that cursors are logging system specific, and journal
cursors are subject to change.</p>
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