| <!DOCTYPE html> |
| <html> |
| <head> |
| <meta charset="utf-8"> |
| <meta http-equiv="X-UA-Compatible" content="IE=edge"> |
| <meta name="viewport" content="width=device-width, initial-scale=1"> |
| |
| <link rel="shortcut icon" href="/favicon.ico" type="image/x-icon"> |
| <link rel="icon" href="/favicon.ico" type="image/x-icon"> |
| |
| <title>Dynamic Log Level Settings</title> |
| |
| <!-- Bootstrap core CSS --> |
| <link href="/assets/css/bootstrap.min.css" rel="stylesheet"> |
| <!-- Bootstrap theme --> |
| <link href="/assets/css/bootstrap-theme.min.css" rel="stylesheet"> |
| |
| <!-- Custom styles for this template --> |
| <link rel="stylesheet" href="http://fortawesome.github.io/Font-Awesome/assets/font-awesome/css/font-awesome.css"> |
| <link href="/css/style.css" rel="stylesheet"> |
| <link href="/assets/css/owl.theme.css" rel="stylesheet"> |
| <link href="/assets/css/owl.carousel.css" rel="stylesheet"> |
| <script type="text/javascript" src="/assets/js/jquery.min.js"></script> |
| <script type="text/javascript" src="/assets/js/bootstrap.min.js"></script> |
| <script type="text/javascript" src="/assets/js/owl.carousel.min.js"></script> |
| <script type="text/javascript" src="/assets/js/storm.js"></script> |
| <!-- Just for debugging purposes. Don't actually copy these 2 lines! --> |
| <!--[if lt IE 9]><script src="../../assets/js/ie8-responsive-file-warning.js"></script><![endif]--> |
| |
| <!-- HTML5 shim and Respond.js for IE8 support of HTML5 elements and media queries --> |
| <!--[if lt IE 9]> |
| <script src="https://oss.maxcdn.com/html5shiv/3.7.2/html5shiv.min.js"></script> |
| <script src="https://oss.maxcdn.com/respond/1.4.2/respond.min.js"></script> |
| <![endif]--> |
| </head> |
| |
| |
| <body> |
| <header> |
| <div class="container-fluid"> |
| <div class="row"> |
| <div class="col-md-5"> |
| <a href="/index.html"><img src="/images/logo.png" class="logo" /></a> |
| </div> |
| <div class="col-md-5"> |
| |
| <h1>Version: 2.2.0</h1> |
| |
| </div> |
| <div class="col-md-2"> |
| <a href="/downloads.html" class="btn-std btn-block btn-download">Download</a> |
| </div> |
| </div> |
| </div> |
| </header> |
| <!--Header End--> |
| <!--Navigation Begin--> |
| <div class="navbar" role="banner"> |
| <div class="container-fluid"> |
| <div class="navbar-header"> |
| <button class="navbar-toggle" type="button" data-toggle="collapse" data-target=".bs-navbar-collapse"> |
| <span class="icon-bar"></span> |
| <span class="icon-bar"></span> |
| <span class="icon-bar"></span> |
| </button> |
| </div> |
| <nav class="collapse navbar-collapse bs-navbar-collapse" role="navigation"> |
| <ul class="nav navbar-nav"> |
| <li><a href="/index.html" id="home">Home</a></li> |
| <li><a href="/getting-help.html" id="getting-help">Getting Help</a></li> |
| <li><a href="/about/integrates.html" id="project-info">Project Information</a></li> |
| <li class="dropdown"> |
| <a href="#" class="dropdown-toggle" data-toggle="dropdown" id="documentation">Documentation <b class="caret"></b></a> |
| <ul class="dropdown-menu"> |
| |
| |
| <li><a href="/releases/2.3.0/index.html">2.3.0</a></li> |
| |
| |
| |
| <li><a href="/releases/2.2.0/index.html">2.2.0</a></li> |
| |
| |
| |
| <li><a href="/releases/2.1.0/index.html">2.1.0</a></li> |
| |
| |
| |
| <li><a href="/releases/2.0.0/index.html">2.0.0</a></li> |
| |
| |
| |
| <li><a href="/releases/1.2.3/index.html">1.2.3</a></li> |
| |
| |
| </ul> |
| </li> |
| <li><a href="/talksAndVideos.html">Talks and Slideshows</a></li> |
| <li class="dropdown"> |
| <a href="#" class="dropdown-toggle" data-toggle="dropdown" id="contribute">Community <b class="caret"></b></a> |
| <ul class="dropdown-menu"> |
| <li><a href="/contribute/Contributing-to-Storm.html">Contributing</a></li> |
| <li><a href="/contribute/People.html">People</a></li> |
| <li><a href="/contribute/BYLAWS.html">ByLaws</a></li> |
| </ul> |
| </li> |
| <li><a href="/2021/09/27/storm230-released.html" id="news">News</a></li> |
| </ul> |
| </nav> |
| </div> |
| </div> |
| |
| |
| |
| <div class="container-fluid"> |
| <h1 class="page-title">Dynamic Log Level Settings</h1> |
| <div class="row"> |
| <div class="col-md-12"> |
| <!-- Documentation --> |
| |
| <p class="post-meta"></p> |
| |
| <div class="documentation-content"><p>We have added the ability to set log level settings for a running topology using the Storm UI and the Storm CLI. </p> |
| |
| <p>The log level settings apply the same way as you'd expect from log4j, as all we are doing is telling log4j to set the level of the logger you provide. If you set the log level of a parent logger, the children loggers start using that level (unless the children have a more restrictive level already). A timeout can optionally be provided (except for DEBUG mode, where it’s required in the UI), if workers should reset log levels automatically.</p> |
| |
| <p>This revert action is triggered using a polling mechanism (every 30 seconds, but this is configurable), so you should expect your timeouts to be the value you provided plus anywhere between 0 and the setting's value.</p> |
| |
| <h2 id="using-the-storm-ui">Using the Storm UI</h2> |
| |
| <p>In order to set a level, click on a running topology, and then click on “Change Log Level” in the Topology Actions section.</p> |
| |
| <p><img src="images/dynamic_log_level_settings_1.png" alt="Change Log Level dialog" title="Change Log Level dialog"></p> |
| |
| <p>Next, provide the logger name, select the level you expect (e.g. WARN), and a timeout in seconds (or 0 if not needed). Then click on “Add”.</p> |
| |
| <p><img src="images/dynamic_log_level_settings_2.png" alt="After adding a log level setting" title="After adding a log level setting"></p> |
| |
| <p>To clear the log level click on the “Clear” button. This reverts the log level back to what it was before you added the setting. The log level line will disappear from the UI.</p> |
| |
| <p>While there is a delay resetting log levels back, setting the log level in the first place is immediate (or as quickly as the message can travel from the UI/CLI to the workers by way of nimbus and zookeeper).</p> |
| |
| <h2 id="using-the-cli">Using the CLI</h2> |
| |
| <p>Using the CLI, issue the command:</p> |
| |
| <p><code>./bin/storm set_log_level [topology name] -l [logger name]=[LEVEL]:[TIMEOUT]</code></p> |
| |
| <p>For example:</p> |
| |
| <p><code>./bin/storm set_log_level my_topology -l ROOT=DEBUG:30</code></p> |
| |
| <p>Sets the ROOT logger to DEBUG for 30 seconds.</p> |
| |
| <p><code>./bin/storm set_log_level my_topology -r ROOT</code></p> |
| |
| <p>Clears the ROOT logger dynamic log level, resetting it to its original value.</p> |
| </div> |
| |
| |
| </div> |
| </div> |
| </div> |
| <footer> |
| <div class="container-fluid"> |
| <div class="row"> |
| <div class="col-md-3"> |
| <div class="footer-widget"> |
| <h5>Meetups</h5> |
| <ul class="latest-news"> |
| |
| <li><a href="http://www.meetup.com/Apache-Storm-Apache-Kafka/">Apache Storm & Apache Kafka</a> <span class="small">(Sunnyvale, CA)</span></li> |
| |
| <li><a href="http://www.meetup.com/Apache-Storm-Kafka-Users/">Apache Storm & Kafka Users</a> <span class="small">(Seattle, WA)</span></li> |
| |
| <li><a href="http://www.meetup.com/New-York-City-Storm-User-Group/">NYC Storm User Group</a> <span class="small">(New York, NY)</span></li> |
| |
| <li><a href="http://www.meetup.com/Bay-Area-Stream-Processing">Bay Area Stream Processing</a> <span class="small">(Emeryville, CA)</span></li> |
| |
| <li><a href="http://www.meetup.com/Boston-Storm-Users/">Boston Realtime Data</a> <span class="small">(Boston, MA)</span></li> |
| |
| <li><a href="http://www.meetup.com/storm-london">London Storm User Group</a> <span class="small">(London, UK)</span></li> |
| |
| <!-- <li><a href="http://www.meetup.com/Apache-Storm-Kafka-Users/">Seatle, WA</a> <span class="small">(27 Jun 2015)</span></li> --> |
| </ul> |
| </div> |
| </div> |
| <div class="col-md-3"> |
| <div class="footer-widget"> |
| <h5>About Apache Storm</h5> |
| <p>Apache Storm integrates with any queueing system and any database system. Apache Storm's spout abstraction makes it easy to integrate a new queuing system. Likewise, integrating Apache Storm with database systems is easy.</p> |
| </div> |
| </div> |
| <div class="col-md-3"> |
| <div class="footer-widget"> |
| <h5>First Look</h5> |
| <ul class="footer-list"> |
| <li><a href="/releases/current/Rationale.html">Rationale</a></li> |
| <li><a href="/releases/current/Tutorial.html">Tutorial</a></li> |
| <li><a href="/releases/current/Setting-up-development-environment.html">Setting up development environment</a></li> |
| <li><a href="/releases/current/Creating-a-new-Storm-project.html">Creating a new Apache Storm project</a></li> |
| </ul> |
| </div> |
| </div> |
| <div class="col-md-3"> |
| <div class="footer-widget"> |
| <h5>Documentation</h5> |
| <ul class="footer-list"> |
| <li><a href="/releases/current/index.html">Index</a></li> |
| <li><a href="/releases/current/javadocs/index.html">Javadoc</a></li> |
| <li><a href="/releases/current/FAQ.html">FAQ</a></li> |
| </ul> |
| </div> |
| </div> |
| </div> |
| <hr/> |
| <div class="row"> |
| <div class="col-md-12"> |
| <p align="center">Copyright © 2019 <a href="http://www.apache.org">Apache Software Foundation</a>. All Rights Reserved. |
| <br>Apache Storm, Apache, the Apache feather logo, and the Apache Storm project logos are trademarks of The Apache Software Foundation. |
| <br>All other marks mentioned may be trademarks or registered trademarks of their respective owners.</p> |
| </div> |
| </div> |
| </div> |
| </footer> |
| <!--Footer End--> |
| <!-- Scroll to top --> |
| <span class="totop"><a href="#"><i class="fa fa-angle-up"></i></a></span> |
| |
| </body> |
| |
| </html> |
| |
