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| <div class="left-nav__overlay"></div> |
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| <article data-swiftype-index='true'> |
| <a class='edit-link' href="https://github.com/apache/ignite/tree/IGNITE-7595/docs/_docs/monitoring-metrics/new-metrics-system.adoc" target="_blank">Edit</a> |
| |
| <h1>New Metrics System</h1> |
| |
| <div class="sect1"> |
| <h2 id="overview">Overview</h2> |
| <div class="sectionbody"> |
| <div class="admonitionblock warning"> |
| <table> |
| <tr> |
| <td class="icon"> |
| <div class="title">Warning</div> |
| </td> |
| <td class="content"> |
| Experimental |
| </td> |
| </tr> |
| </table> |
| </div> |
| <div class="paragraph"> |
| <p>Ignite 2.8 introduced a new mechanism for collecting metrics, which is intended to replace the <a href="/docs/2.9.0/monitoring-metrics/metrics">legacy metrics system</a>. |
| This section explains the new system and how you can use it to monitor your cluster.</p> |
| </div> |
| <div class="paragraph"> |
| <p>Let’s explore the basic concepts of the new metrics system in Ignite. |
| First, there are different metrics. |
| Each metric has a name and a return value. |
| The return value can be a simple value like <code>String</code>, <code>long</code>, or <code>double</code>, or can represent a Java object. |
| Some metrics represent <a href="#histograms">Histograms</a>.</p> |
| </div> |
| <div class="paragraph"> |
| <p>And then there are different ways to export the metrics — what we call <em>exporters</em>. |
| To put it another way, the exporter are different ways you can access the metrics. |
| Each exporter always gives access to all available metrics.</p> |
| </div> |
| <div class="paragraph"> |
| <p>Ignite includes the following exporters:</p> |
| </div> |
| <div class="ulist"> |
| <ul> |
| <li> |
| <p>JMX</p> |
| </li> |
| <li> |
| <p>SQL Views</p> |
| </li> |
| <li> |
| <p>Log files</p> |
| </li> |
| <li> |
| <p>OpenCensus</p> |
| </li> |
| </ul> |
| </div> |
| <div class="paragraph"> |
| <p>You can create a custom exporter by implementing the <a href="https://ignite.apache.org/releases/2.9.0/javadoc/org/apache/ignite/spi/metric/MetricExporterSpi.html" target="_blank" rel="noopener">MetricExporterSpi</a> interface.</p> |
| </div> |
| </div> |
| </div> |
| <div class="sect1"> |
| <h2 id="metric-registers">Metric Registers</h2> |
| <div class="sectionbody"> |
| <div class="paragraph"> |
| <p>Metrics are grouped into categories (called <em>registers</em>). |
| Each register has a name. |
| The full name of a specific metric within the register consists of the register name followed by a dot, followed by the name of the metric: <code><register_name>.<metric_name></code>. |
| For example, the register for data storage metrics is called <code>io.datastorage</code>. |
| The metric that return the storage size is called <code>io.datastorage.StorageSize</code>.</p> |
| </div> |
| <div class="paragraph"> |
| <p>The list of all registers and the metrics they contain are described <a href="/docs/2.9.0/monitoring-metrics/new-metrics">here</a>.</p> |
| </div> |
| </div> |
| </div> |
| <div class="sect1"> |
| <h2 id="metric-exporters">Metric Exporters</h2> |
| <div class="sectionbody"> |
| <div class="paragraph"> |
| <p>If you want to enable metrics, configure one or multiple metric exporters in the node configuration. |
| This is a node-specific configuration, which means it enables metrics only on the node where it is specified.</p> |
| </div> |
| <code-tabs><code-tab data-tab='XML'><div class="listingblock"> |
| <div class="content"> |
| <pre class="rouge highlight"><code data-lang="xml"><span class="nt"><bean</span> <span class="na">class=</span><span class="s">"org.apache.ignite.configuration.IgniteConfiguration"</span><span class="nt">></span> |
| <span class="nt"><property</span> <span class="na">name=</span><span class="s">"metricExporterSpi"</span><span class="nt">></span> |
| <span class="nt"><list></span> |
| <span class="nt"><bean</span> <span class="na">class=</span><span class="s">"org.apache.ignite.spi.metric.jmx.JmxMetricExporterSpi"</span><span class="nt">/></span> |
| <span class="nt"><bean</span> <span class="na">class=</span><span class="s">"org.apache.ignite.spi.metric.sql.SqlViewMetricExporterSpi"</span><span class="nt">/></span> |
| <span class="nt"><bean</span> <span class="na">class=</span><span class="s">"org.apache.ignite.spi.metric.log.LogExporterSpi"</span><span class="nt">/></span> |
| <span class="nt"><bean</span> <span class="na">class=</span><span class="s">"org.apache.ignite.spi.metric.opencensus.OpenCensusMetricExporterSpi"</span><span class="nt">/></span> |
| <span class="nt"></list></span> |
| <span class="nt"></property></span> |
| <span class="nt"></bean></span></code></pre> |
| </div> |
| </div></code-tab><code-tab data-tab='Java'><div class="listingblock"> |
| <div class="content"> |
| <pre class="rouge highlight"><code data-lang="java"><span class="nc">IgniteConfiguration</span> <span class="n">cfg</span> <span class="o">=</span> <span class="k">new</span> <span class="nc">IgniteConfiguration</span><span class="o">();</span> |
| |
| <span class="n">cfg</span><span class="o">.</span><span class="na">setMetricExporterSpi</span><span class="o">(</span><span class="k">new</span> <span class="nc">JmxMetricExporterSpi</span><span class="o">(),</span> <span class="k">new</span> <span class="nc">SqlViewMetricExporterSpi</span><span class="o">());</span> |
| |
| <span class="nc">Ignite</span> <span class="n">ignite</span> <span class="o">=</span> <span class="nc">Ignition</span><span class="o">.</span><span class="na">start</span><span class="o">(</span><span class="n">cfg</span><span class="o">);</span></code></pre> |
| </div> |
| </div></code-tab><code-tab data-tab='C#/.NET'></code-tab><code-tab data-tab='C++' data-unavailable='true'><div class="listingblock"> |
| <div class="content"> |
| <pre class="rouge highlight"><code>This API is not presently available for C++. You can use XML configuration.</code></pre> |
| </div> |
| </div></code-tab></code-tabs> |
| <div class="paragraph"> |
| <p>The following sections describe the exporters available in Ignite by default.</p> |
| </div> |
| <div class="sect2"> |
| <h3 id="jmx">JMX</h3> |
| <div class="paragraph"> |
| <p><code>org.apache.ignite.spi.metric.jmx.JmxMetricExporterSpi</code> exposes metrics via JMX beans.</p> |
| </div> |
| <code-tabs><code-tab data-tab='Java'><div class="listingblock"> |
| <div class="content"> |
| <pre class="rouge highlight"><code data-lang="java"><span class="nc">IgniteConfiguration</span> <span class="n">cfg</span> <span class="o">=</span> <span class="k">new</span> <span class="nc">IgniteConfiguration</span><span class="o">();</span> |
| |
| <span class="nc">JmxMetricExporterSpi</span> <span class="n">jmxExporter</span> <span class="o">=</span> <span class="k">new</span> <span class="nc">JmxMetricExporterSpi</span><span class="o">();</span> |
| |
| <span class="c1">//export cache metrics only</span> |
| <span class="n">jmxExporter</span><span class="o">.</span><span class="na">setExportFilter</span><span class="o">(</span><span class="n">mreg</span> <span class="o">-></span> <span class="n">mreg</span><span class="o">.</span><span class="na">name</span><span class="o">().</span><span class="na">startsWith</span><span class="o">(</span><span class="s">"cache."</span><span class="o">));</span> |
| |
| <span class="n">cfg</span><span class="o">.</span><span class="na">setMetricExporterSpi</span><span class="o">(</span><span class="n">jmxExporter</span><span class="o">);</span></code></pre> |
| </div> |
| </div></code-tab><code-tab data-tab='C#/.NET'></code-tab><code-tab data-tab='C++' data-unavailable='true'><div class="listingblock"> |
| <div class="content"> |
| <pre class="rouge highlight"><code>This API is not presently available for C++.</code></pre> |
| </div> |
| </div></code-tab></code-tabs> |
| </div> |
| <div class="sect2"> |
| <h3 id="sql-view">SQL View</h3> |
| <div class="paragraph"> |
| <p><code>org.apache.ignite.spi.metric.sql.SqlViewMetricExporterSpi</code> exposes metrics via the <code>SYS.METRICS</code> view. |
| Each metric is displayed as a single record. |
| You can use any supported SQL tool to view the metrics:</p> |
| </div> |
| <div class="listingblock"> |
| <div class="content"> |
| <pre class="rouge highlight"><code data-lang="shell">> select name, value from SYS.METRICS where name LIKE 'cache.myCache.%'; |
| +-----------------------------------+--------------------------------+ |
| | NAME | VALUE | |
| +-----------------------------------+--------------------------------+ |
| | cache.myCache.CacheTxRollbacks | 0 | |
| | cache.myCache.OffHeapRemovals | 0 | |
| | cache.myCache.QueryCompleted | 0 | |
| | cache.myCache.QueryFailed | 0 | |
| | cache.myCache.EstimatedRebalancingKeys | 0 | |
| | cache.myCache.CacheEvictions | 0 | |
| | cache.myCache.CommitTime | [J@2eb66498 | |
| ....</code></pre> |
| </div> |
| </div> |
| <div class="paragraph"> |
| <p>This is how you can configure the SQL View exporter:</p> |
| </div> |
| <code-tabs><code-tab data-tab='XML'><div class="listingblock"> |
| <div class="content"> |
| <pre class="rouge highlight"><code data-lang="xml"><span class="nt"><bean</span> <span class="na">class=</span><span class="s">"org.apache.ignite.configuration.IgniteConfiguration"</span><span class="nt">></span> |
| <span class="nt"><property</span> <span class="na">name=</span><span class="s">"metricExporterSpi"</span><span class="nt">></span> |
| <span class="nt"><list></span> |
| <span class="nt"><bean</span> <span class="na">class=</span><span class="s">"org.apache.ignite.spi.metric.sql.SqlViewMetricExporterSpi"</span><span class="nt">/></span> |
| <span class="nt"></list></span> |
| <span class="nt"></property></span> |
| <span class="nt"></bean></span></code></pre> |
| </div> |
| </div></code-tab><code-tab data-tab='Java'><div class="listingblock"> |
| <div class="content"> |
| <pre class="rouge highlight"><code data-lang="java"><span class="nc">IgniteConfiguration</span> <span class="n">cfg</span> <span class="o">=</span> <span class="k">new</span> <span class="nc">IgniteConfiguration</span><span class="o">();</span> |
| |
| <span class="nc">SqlViewMetricExporterSpi</span> <span class="n">jmxExporter</span> <span class="o">=</span> <span class="k">new</span> <span class="nc">SqlViewMetricExporterSpi</span><span class="o">();</span> |
| |
| <span class="c1">//export cache metrics only</span> |
| <span class="n">jmxExporter</span><span class="o">.</span><span class="na">setExportFilter</span><span class="o">(</span><span class="n">mreg</span> <span class="o">-></span> <span class="n">mreg</span><span class="o">.</span><span class="na">name</span><span class="o">().</span><span class="na">startsWith</span><span class="o">(</span><span class="s">"cache."</span><span class="o">));</span> |
| |
| <span class="n">cfg</span><span class="o">.</span><span class="na">setMetricExporterSpi</span><span class="o">(</span><span class="n">jmxExporter</span><span class="o">);</span></code></pre> |
| </div> |
| </div></code-tab><code-tab data-tab='C#/.NET'></code-tab><code-tab data-tab='C++' data-unavailable='true'><div class="listingblock"> |
| <div class="content"> |
| <pre class="rouge highlight"><code>This API is not presently available for C++. You can use XML configuration.</code></pre> |
| </div> |
| </div></code-tab></code-tabs> |
| </div> |
| <div class="sect2"> |
| <h3 id="log">Log</h3> |
| <div class="paragraph"> |
| <p><code>org.apache.ignite.spi.metric.log.LogExporterSpi</code> prints the metrics to the log file at regular intervals (1 min by default) at INFO level.</p> |
| </div> |
| <code-tabs><code-tab data-tab='XML'><div class="listingblock"> |
| <div class="content"> |
| <pre class="rouge highlight"><code data-lang="xml"><span class="nt"><bean</span> <span class="na">class=</span><span class="s">"org.apache.ignite.configuration.IgniteConfiguration"</span><span class="nt">></span> |
| <span class="nt"><property</span> <span class="na">name=</span><span class="s">"metricExporterSpi"</span><span class="nt">></span> |
| <span class="nt"><list></span> |
| <span class="nt"><bean</span> <span class="na">class=</span><span class="s">"org.apache.ignite.spi.metric.log.LogExporterSpi"</span><span class="nt">/></span> |
| <span class="nt"></list></span> |
| <span class="nt"></property></span> |
| <span class="nt"></bean></span></code></pre> |
| </div> |
| </div></code-tab><code-tab data-tab='Java'><div class="paragraph"> |
| <p>If you use programmatic configuration, you can change the print frequency as follows:</p> |
| </div> |
| <div class="listingblock"> |
| <div class="content"> |
| <pre class="rouge highlight"><code data-lang="java"><span class="nc">IgniteConfiguration</span> <span class="n">cfg</span> <span class="o">=</span> <span class="k">new</span> <span class="nc">IgniteConfiguration</span><span class="o">();</span> |
| |
| <span class="nc">LogExporterSpi</span> <span class="n">logExporter</span> <span class="o">=</span> <span class="k">new</span> <span class="nc">LogExporterSpi</span><span class="o">();</span> |
| <span class="n">logExporter</span><span class="o">.</span><span class="na">setPeriod</span><span class="o">(</span><span class="mi">600_000</span><span class="o">);</span> |
| |
| <span class="c1">//export cache metrics only</span> |
| <span class="n">logExporter</span><span class="o">.</span><span class="na">setExportFilter</span><span class="o">(</span><span class="n">mreg</span> <span class="o">-></span> <span class="n">mreg</span><span class="o">.</span><span class="na">name</span><span class="o">().</span><span class="na">startsWith</span><span class="o">(</span><span class="s">"cache."</span><span class="o">));</span> |
| |
| <span class="n">cfg</span><span class="o">.</span><span class="na">setMetricExporterSpi</span><span class="o">(</span><span class="n">logExporter</span><span class="o">);</span> |
| |
| <span class="nc">Ignite</span> <span class="n">ignite</span> <span class="o">=</span> <span class="nc">Ignition</span><span class="o">.</span><span class="na">start</span><span class="o">(</span><span class="n">cfg</span><span class="o">);</span></code></pre> |
| </div> |
| </div></code-tab><code-tab data-tab='C#/.NET'></code-tab><code-tab data-tab='C++'></code-tab></code-tabs> |
| </div> |
| <div class="sect2"> |
| <h3 id="opencensus">OpenCensus</h3> |
| <div class="paragraph"> |
| <p><code>org.apache.ignite.spi.metric.opencensus.OpenCensusMetricExporterSpi</code> adds integration with the OpenCensus library.</p> |
| </div> |
| <div class="paragraph"> |
| <p>To use the OpenCensus exporter:</p> |
| </div> |
| <div class="olist arabic"> |
| <ol class="arabic"> |
| <li> |
| <p><a href="/docs/2.9.0/setup#enabling-modules">Enable the 'ignite-opencensus' module</a>.</p> |
| </li> |
| <li> |
| <p>Add <code>org.apache.ignite.spi.metric.opencensus.OpenCensusMetricExporterSpi</code> to the list of exporters in the node configuration.</p> |
| </li> |
| <li> |
| <p>Configure OpenCensus StatsCollector to export to a specific system. See <a href="https://github.com/apache/ignite/tree/master/examples/src/main/java/org/apache/ignite/examples/opencensus/OpenCensusMetricsExporterExample.java">OpenCensusMetricsExporterExample.java</a> for an example and OpenCensus documentation for additional information.</p> |
| </li> |
| </ol> |
| </div> |
| <div class="paragraph"> |
| <p>Configuration parameters:</p> |
| </div> |
| <div class="ulist"> |
| <ul> |
| <li> |
| <p><code>filter</code> - predicate that filters metrics.</p> |
| </li> |
| <li> |
| <p><code>period</code> - export period.</p> |
| </li> |
| <li> |
| <p><code>sendInstanceName</code> - if enabled, a tag with the Ignite instance name is added to each metric.</p> |
| </li> |
| <li> |
| <p><code>sendNodeId</code> - if enabled, a tag with the Ignite node id is added to each metric.</p> |
| </li> |
| <li> |
| <p><code>sendConsistentId</code> - if enabled, a tag with the Ignite node consistent id is added to each metric.</p> |
| </li> |
| </ul> |
| </div> |
| </div> |
| </div> |
| </div> |
| <div class="sect1"> |
| <h2 id="histograms">Histograms</h2> |
| <div class="sectionbody"> |
| <div class="paragraph"> |
| <p>The metrics that represent histograms are available in the JMX exporter only. |
| Histogram metrics are exported as a set of values where each value corresponds to a specific bucket and is available through a separate JMX bean attribute. |
| The attribute names of a histogram metric have the following format:</p> |
| </div> |
| <div class="listingblock"> |
| <div class="content"> |
| <pre class="rouge highlight"><code>{metric_name}_{low_bound}_{high_bound}</code></pre> |
| </div> |
| </div> |
| <div class="paragraph"> |
| <p>where</p> |
| </div> |
| <div class="ulist"> |
| <ul> |
| <li> |
| <p><code>{metric_name}</code> - the name of the metric.</p> |
| </li> |
| <li> |
| <p><code>{low_bound}</code> - start of the bound. <code>0</code> for the first bound.</p> |
| </li> |
| <li> |
| <p><code>{high_bound}</code> - end of the bound. <code>inf</code> for the last bound.</p> |
| </li> |
| </ul> |
| </div> |
| <div class="paragraph"> |
| <p>Example of the metric names if the bounds are [10,100]:</p> |
| </div> |
| <div class="ulist"> |
| <ul> |
| <li> |
| <p><code>histogram_0_10</code> - less than 10.</p> |
| </li> |
| <li> |
| <p><code>histogram_10_100</code> - between 10 and 100.</p> |
| </li> |
| <li> |
| <p><code>histogram_100_inf</code> - more than 100.</p> |
| </li> |
| </ul> |
| </div> |
| </div> |
| </div> |
| <div class="copyright"> |
| © 2020 The Apache Software Foundation.<br/> |
| Apache, Apache Ignite, the Apache feather and the Apache Ignite logo are either registered trademarks or trademarks of The Apache Software Foundation. |
| |
| </div> |
| |
| </article> |
| <nav class="right-nav" data-swiftype-index='false'> |
| <ul class="sectlevel1"> |
| <li><a href="#overview">Overview</a></li> |
| <li><a href="#metric-registers">Metric Registers</a></li> |
| <li><a href="#metric-exporters">Metric Exporters</a> |
| <ul class="sectlevel2"> |
| <li><a href="#jmx">JMX</a></li> |
| <li><a href="#sql-view">SQL View</a></li> |
| <li><a href="#log">Log</a></li> |
| <li><a href="#opencensus">OpenCensus</a></li> |
| </ul> |
| </li> |
| <li><a href="#histograms">Histograms</a></li> |
| </ul> |
| |
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