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* '$RCSfile$'
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* Purpose: web page describing the installation of Metacat
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* Copyright: 2008 Regents of the University of California and the
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* National Center for Ecological Analysis and Synthesis
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* Authors: Chad Berkley
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*
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* '$Author: daigle $'
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* '$Date: 2008-12-26 16:30:05 -0800 (Fri, 26 Dec 2008) $'
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* '$Revision: 4715 $'
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<!DOCTYPE html PUBLIC "-//W3C//DTD html 4.0//EN">
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<html>
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<head>
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<title>Metacat Configuration Instructions</title>
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<link rel="stylesheet" type="text/css" href="./common.css">
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<link rel="stylesheet" type="text/css" href="./default.css">
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<table class="tabledefault" width="100%">
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<tr><td rowspan="2"><img src="./images/KNBLogo.gif"></td>
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<td colspan="7">
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<div class="title">Metacat Configuration</div>
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</td>
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</tr>
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<tr>
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<td><a href="/" class="toollink"> KNB Home </a></td>
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<td><a href="/data.html" class="toollink"> Data </a></td>
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<td><a href="/people.html" class="toollink"> People </a></td>
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<td><a href="/informatics" class="toollink"> Informatics </a></td>
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<td><a href="/biodiversity" class="toollink"> Biocomplexity </a></td>
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<td><a href="/education" class="toollink"> Education </a></td>
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<td><a href="/software" class="toollink"> Software </a></td>
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</tr>
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</table>
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<hr>
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<div class="header1">Table of Contents</div>
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<div class="toc">
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<div class="toc1"><a href="#Overview">Overview</a></div>
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<div class="toc2"><a href="#MetacatConfiguration">Metacat Configuration</a></div>
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<div class="toc2"><a href="#ConfigurationRules">Configuration Rules</a></div>
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<div class="toc1"><a href="#authConfig">Authentication Configuration</a></div>
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<div class="toc2"><a href="#AuthOverview">Authentication Overview</a></div>
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<div class="toc2"><a href="#GetToAuthConfig">Getting to the Authentication Configuration</a></div>
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<div class="toc2"><a href="#ConfigAuthNoAuth">Changing Authentication Configuration Without Authentication</a></div>
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<div class="toc1"><a href="#AdminLogin">Admin Log In</a></div>
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<div class="toc2"><a href="#AdminLoginOverview">Admin Log In</a></div>
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<div class="toc2"><a href="#LoggingIn">Logging In</a></div>
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<div class="toc1"><a href="#MainConfig">Main Configuration Page</a></div>
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<div class="toc2"><a href="#MainConfigOverview">Main Configuration Overview</a></div>
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<div class="toc1"><a href="#GlobalConfig">Global Properties Configuration</a></div>
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<div class="toc2"><a href="#GlobalConfigOverview">Global Properties Overview</a></div>
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<div class="toc2"><a href="#AutoDetection">Property Auto-Detection</a></div>
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<div class="toc2"><a href="#GlobalConfigBackup">Global Property Backup</a></div>
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<div class="toc1"><a href="#SkinsConfig">Skins Configuration</a></div>
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<div class="toc2"><a href="#SkinsConfigOverview">Skins Overview</a></div>
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<div class="toc2"><a href="#ChoosingDefaultSkin">Choosing a Default Skin</a></div>
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<div class="toc2"><a href="#ConfigOnlineRegistry">Configuring Online Registry</a></div>
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<div class="toc1"><a href="#DatabaseConfig">Database Configuration</a></div>
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<div class="toc2"><a href="#DatabaseConfigOverview">Database Configuration Overview</a></div>
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<div class="toc2"><a href="#DatabaseNewInstall">New Database Installation</a></div>
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<div class="toc2"><a href="#DatabaseUpgrade">Database Upgrade</a></div>
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<div class="toc1"><a href="#GeoserverConfig">Geoserver Configuration</a></div>
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<div class="toc2"><a href="#GeoserverUpdatePassword">Geoserver Password Update</a></div>
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<div class="toc2"><a href="#GeoserverManualUpdate">Geoserver Manual Update</a></div>
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<div class="toc1"><a href="#CompleteConfig">Complete the Metacat Configuration</a></div>
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</div>
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<a name="Overview"></a><div class="header1">Overview</div>
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<a name="MetacatConfiguration"></a><div class="header2">Metacat Configuration</div>
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<p>As of version 1.9.0, Metacat configuration is done internally by the application. When
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Metacat (Tomcat) is started, it will check to see if it is configured. If not, you will be
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automatically sent to the configuration pages. </p>
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<p>If the installation is new, or the previous version is before 1.9.0, you will
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need to pay close attention to the configuration values. If you have upgraded
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Metacat, and the previous version is 1.9.0 or later, Metacat will pull existing
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values from a backup location. You should still verify that the values are
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correct.</p>
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<p>Get to Metacat on your server by entering into the browser:</p>
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<div class="code">http://<your_context_url></div>
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<p>Where <your_context_url> is the url where Metacat will be served followed
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by the name of the war file(application context) that you installed. For instance,
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the KNB production Metacat url is:</p>
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<div class="code">http://knb.ecoinformatics.org/knb</div>
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<p>You can always go to the configuration screen from within Metacat by typing:
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<div class="code"><your_context_url>/admin</div>
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<a name="ConfigurationRules"></a><div class="header2">Configuration Rules</div>
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<p>The system will follow these rules in order to determine the order
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that the configuration will occur:</p>
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<ul>
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<li>
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Always prompt the user for the backup directories with the
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<a HREF="#BackupConfig">Backup Configuration Section</a>.
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You will need to have backup directories configured in order
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to continue with configuration.
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</li>
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<li>
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Is Authentication Configured? If not, show
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<a HREF="#AuthConfig">Authentication Configuration Section</a>.
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You will need to have authorizaiton configured in order to define administrative accounts
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and authenticate as one of these users.
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</li>
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<li>
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Are you logged in as an administrative user? If not, show
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<a HREF="#AdminLogin">Administrator Login Page</a>.
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You can only configure Metacat as an administrator.
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</li>
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<li>
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Are main properties, skins or database unconfigured? If so, show
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<a HREF="#MainConfig">Main Configuration Page</a>
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Note that you will not be able to select the database configuration utility
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until main properties have been configured.
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</li>
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<li>
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Are all sections configured? If so, show
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<a HREF="#MainConfig">Main Configuration Page</a> which
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include instructions for going to Metacat server (or restarting Metacat if you
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are reconfiguring a running server).
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</li>
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</ul>
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<p> See the following sections for descriptions of how each of these work. For more
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information on each field, click on the blue question mark icon to the right.</p>
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<a name="BackupConfig"></a><div class="header1">Backup Configuration</div>
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<a name="BackupOverview"></a><div class="header2">Backup Overview</div>
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<p>Metacat backs up all configured values to a directory outside the application
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installation directories. This is so that we can preserve the configuration even
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after you upgrade Metacat (and the application directories get removed).</p>
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<p>Since a new installation/upgrade won't know where this external directory is, it will
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go through a discovery algorithm to give a best guess and pre-populate this value on the
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Backup Directory Configuration screen (see fig 1). The algorithm is:
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<ul>
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<li>Look for a saved backup location file in the user home dir - Is there a file named
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<user_home>/.metacat/backup-location for the user that started tomcat? if so, does
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it contain a single line which is a readable directory? This directory was the backup
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directory used during a previous install. Return that directory.</li>
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<li>Look for an existing hidden (.metacat) directory in a default system directory. Get
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the default base directory for the OS. (See application.windowsBackupBaseDir and
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application.linuxBackupBaseDir in metacat.properties.) If a directory called
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<base_dir>/metacat/.metacat exists, return <base_dir>/metacat.</li>
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<li> Look for an existing hidden (.metacat) directory in the user directory. If a directory
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called <user_home>/.metacat exists for the user that started tomcat, return <user_home>.</li>
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<li> Is the <base_dir> writable by the user that started tomcat? If so, return <base_dir></li>
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<li> Does the <user_home> exist? If so, return <user_home></li>
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<li> Otherwise, return null </li>
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</ul>
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<img class="screenshot" src="./images/backup-config.png"/>
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<div class="fig-text"> fig 1 </div>
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<a name="ConfigBackup"></a><div class="header2">Configure Backup</div>
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<p>If the pre-populated value is incorrect, you should change it to the correct
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directory</p>
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<a name="AuthConfig"></a><div class="header1">Authentication Configuration</div>
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<a name="AuthOverview"></a><div class="header2">Authentication Overview</div>
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<p>Metacat uses LDAP as it's primary authentication mechanism, but you can define
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your own mechanism by creating a java class that implements
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AuthInterface. The configuration values needed are Authentication Class, Authentication URL,
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Authentication Secure URL and Metacat Administrators. You need
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to verify that the the Authentication URL and Authentication Secure URL are correct (fig 2).
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<span class="emphasis">You need to make sure that your user
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account is entered into the Metacat Administrators field. You will not be allowed
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to continue with configuration if this is missing.</span>
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<img class="screenshot" src="./images/auth-config.png"/>
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<div class="fig-text"> fig 2 </div>
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<a name="GetToAdminConfig"></a><div class="header2">Getting to the Authentication Configuration</div>
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<p>You will automatically be sent to the Authentication Configuration page if this is a new
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installation or upgrade.</p>
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<p>You can also get to the Administrative configuration from a running Metacat by typing:</p>
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<div class="code"><your_context_url>/admin</div>
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<p>You will be required to log in as an administrator and restart Metacat once you
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make changes.</p>
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<a name="ConfigAuthNoAuth"></a><div class="header2">Changing Authentication Configuration Without Authentication</div>
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<p>There is one exception to the log in rule. That is when you need to change or add
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authentication information, but you can't authenticate using the existing setup. For example:</p>
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<ul>
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<li>The existing Metacat administrator is no longer available</li>
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<li>You forgot the administrator password.</li>
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<li>The configured authentication urls are unavailable and you need to configure new ones.</li>
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</ul>
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<p>In this case, you will need to edit the Metacat configuration file by hand and
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make the changes. This insures that only a person who has access to the Metacat
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server and the configuration files on that server will be able to change the
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administrator accounts</p>
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<p>Stop Tomcat and edit the Metacat properties file at:</p>
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<div class="code"><webapp_dir>/<context_dir>/WEB-INF/metacat.properties</div>
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<p>where <webapp_dir> is the place that Tomcat looks for applications and
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<context_dir> is the name of the Metacat application (usually knb). Change the
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following properties appropriately:</p>
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<ul>
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<li>auth.administrators - a colon separated list of administrators</li>
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<li>auth.url - the authenication server url</li>
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<li>auth.surl - the authentication secure server url</li>
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</ul>
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<p>Save the metacat.properties file and start Tomcat.</p>
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<a name="AdminLogin"></a><div class="header1">Admin Log In</div>
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<a name="AdminLoginOverview"></a><div class="header2">Admin Log In Overview</div>
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<p>Once authentication has been configured, you will be required to login as an
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administrative user if you haven't already. You will be taken to
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the administrator login screen (fig 2). You can also get to the login
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screen by choosing the "log in as different user" link at the bottom of
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any configuration screen.</p>
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<img class="screenshot" src="./images/admin-login.png"/>
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<div class="fig-text"> fig 3 </div>
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<a name="LoggingIn"></a><div class="header2">Logging In</div>
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<p>You need to log in with an account that was configured as an administrative
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user in the authentication configuration section. If you did not set up the correct user
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there, you will need to go through the
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<a href="#ConfigAuthNoAuth">Changing Authentication Configuration Without Authentication</a>
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instructions to set up the user.</p>
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<p>Enter your user name. This is one of the Metacat administrators that you
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entered in authenticationuthentication configuration. Enter your password and
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hit the "Login" button. You should successfully log in.</p>
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<a name="MainConfig"></a><div class="header1">Main Configuration Page</div>
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<a name="MainConfigOverview"></a><div class="header2">Main Configuration Overview</div>
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<p>The main configuration screen acts as a gateway into individual configuration
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sections (fig 4). You should see that the authentication is already configured.</p>
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<p>Each section is listed with a status to the left which can be one of:</p>
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<ul>
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<li><font color="red">[unconfigured]</font> - the section has yet to be configured</li>
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<li><font color="green">[configured]</font> - the section has been configured</li>
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<li>
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<font color="green">[bypassed]</font> - this is currently only used for Geoserver
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configuration. The administrator can choose not to configure the Geoserver user/password.
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In essence, the bypass status acts like the configured status.
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</li>
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</ul>
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<p>To the right of each section is an option which can be one of:
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<ul>
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<li>Configure Now - click on this link to configure that section</li>
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<li>Reconfigure Now - the section was already configured, but you can choose to reconfigure it.</li>
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<li>
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Configure Global Properties First - this section has a dependency on the global
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properties section. Once global properties is configured, the option to configure
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this section should become available.
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</li>
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<li>Version: X.X.X - this is used for the Database Installation/Upgrade section. The system
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detects the database schema version. If that version is the same as the application version,
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that version will be displayed (i.e. 1.9.0) and no further database configuration is
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required.
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</li>
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</ul>
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<p>All sections must be in a configured or bypassed state in order to run Metacat.</p>
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<img class="screenshot" src="./images/main-config.png"/>
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<div class="fig-text"> fig 4 </div>
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<a name="GlobalConfig"></a><div class="header1">Global Properties Configuration</div>
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<a name="GlobalConfigOverview"></a><div class="header2">Global Properties Overview</div>
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<p>Metacat global properties are the bulk of the core properties needed to run Metacat
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(fig 5). For detailed instructions on setting these properties, refer to the blue
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question mark icon to the right of each property. Be sure that each of these are set
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appropriately.</p>
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<img class="screenshot" src="./images/global-config.png"/>
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<div class="fig-text"> fig 5 </div>
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<a name="AutoDetection"></a><div class="header2">Property Auto-Detection</div>
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<p>The first time you install Metacat, the system will attempt to auto-detect
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some values. These are:</p>
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<ul>
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<li>Metacat Context - Name of the context under which Metacat will run. This is the name
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of the Metacat war file that was deployed (minus the .war extension).</li>
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<li>Server Name - The DNS name of the server where Metacat will be available, not including
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port numbers or the http:// header.</li>
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<li>HTTP Port - The non-secure port where Metacat will be available. </li>
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<li>HTTP SSL Port - The secure port where Metacat will be available.</li>
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<li>Deploy Location - The directory where the application is deployed.</li>
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</ul>
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<p>You should be extra careful that these were detected correctly.</p>
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<a name="GlobalConfigBackup"></a><div class="header2">Global Property Backup</div>
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<p>When you save global properties, they are saved in a backup file that is
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located in the following directory on linux:</p>
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<div class="code">/var/metacat/.metacat</div>
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and on windows:
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<div class="code">C:\Program Files\metacat\.metacat</div>
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<p>When you update Metacat, the system will look for these backed up properties
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so you won't have to re-enter all the information from previous installs.</p>
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<a name="SkinsConfig"></a><div class="header1">Skins Configuration</div>
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<a name="SkinsConfigOverview"></a><div class="header2">Skins Overview</div>
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<p>Metacat allows for a customized look and feel for the Metacat front end and for the
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online data registry services. There are two major functions provided by the
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skins configuration. The first is to choose which skin will be the default. The
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second will be to configure the look and feel of the online data registry pages. For
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more information on the online data registry option, refer to the
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<a href="./registry_installation.html">Metacat Registry Installation</a> documentation.</p>
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<p>Note that if you are not using the online registry, and you don't have a custom skin,
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you can just save the default skins configuration and move on to the next configuration
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section.</p>
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<a name="ChoosingDefaultSkin"></a><div class="header2">Choosing a Default Skin</div>
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<p>There are several skins available to choose from in Metacat (fig 6). If you have a
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skin that has been developed specifically for your instance of Metacat, you should
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select the checkbox next to that skin. When you do, the form will open up with
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several options for that skin (fig 6). choose the 'Make "skin_name" default" radio selection.
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You should see "(default)" appear next to that skin name. Save the configuration
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and that skin will be the one that appears when users visit your Metacat site. Note
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that if you do not have a custom skin, you should leave your skin as the "default" skin.</p>
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<img class="screenshot" src="./images/skins-config.png"/>
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<div class="fig-text"> fig 6 </div>
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<a name="ConfigOnlineRegistry"></a><div class="header2">Configuring Online Registry</div>
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<p>The online registry code provides a web interface for entering data into Metacat. The
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screens are somewhat configurable as far as which fields show up and which are required.
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You should select each for which you want to activate the registry and then select the
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appropriate fields for that skin.</p>
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<img class="screenshot" src="./images/skins-config-2.png"/>
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<div class="fig-text"> fig 7 </div>
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<a name="DatabaseConfig"></a><div class="header1">Database Configuration</div>
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<a name="DatabaseConfigOverview"></a><div class="header2">Database Configuration Overview</div>
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<p>Metacat will detect the schema version of your database, and upgrade it if necessary. Once the
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global Metacat properties have been configured, the Database Installation/Upgrade link
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will become active on the main Metacat configuration page (see fig 4).</p>
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<a name="DatabaseNewInstall"></a><div class="header2">New Database Installation</div>
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<p>If this is a installation of Metacat, the database install/upgrade utility will
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inform you of this (fig 8). It will list the sql scripts that will get run in order
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to create a database schema for the version of Metacat that you are installing. If
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there is any question as to whether the database is new, you should choose to cancel.
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When you choose to continue, the server will run the scripts you saw earlier.</p>
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<img class="screenshot" src="./images/database-config.png"/>
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<div class="fig-text"> fig 8 </div>
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<a name="DatabaseUpgrade"></a><div class="header2">Database Upgrade</div>
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<p>If this is an upgrade of Metacat, the database install/upgrade utility will
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inform you of the current version of the database (fig 9). It will list the sql scripts
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that will get run in order to update the database schema to the upgraded version of
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Metacat. If there is any question as to whether the detected database schema version is
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correct, you should choose to cancel. When you choose to continue, the server will run
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the scripts you saw earlier.</p>
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<img class="screenshot" src="./images/database-config-2.png"/>
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<div class="fig-text"> fig 9 </div>
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<a name="GeoserverConfig"></a><div class="header1">Geoserver Configuration</div>
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<a name="GeoserverOverview"></a><div class="header2">Geoserver Configuration Overview</div>
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<p>Metacat comes bundled with a Web Mapping Service called Geoserver which
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converts spatial data into web-deliverable map images. For more information, see the
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<a href="./spatial_option.html">Metacat Spatial Option documentation</a>. Geoserver
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installs with a default admin username and password. You should change these so that
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only local administrators can make changes to Geoserver.</p>
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<a name="GeoserverUpdatePassword"></a><div class="header2">Geoserver Password Update</div>
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<p>When you choose the Geoserver Configuration link on the main configuratio page, you
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will go to a page that will prompt you for a user name and password (fig 10). When you
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enter a user name and password, the metacat server will contact the embedded Geoserver
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server and change the login credentails.</p>
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<p>You also have the option of choosing "bypass". This will leave Geoserver configured
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with the default user name and password. The main configuration screen will show the
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bypassed status. The system will interpret the bypassed status the same as the configured
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status.</p>
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<img class="screenshot" src="./images/geoserver-config.png"/>
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<div class="fig-text"> fig 10 </div>
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<a name="GeoserverManualUpdate"></a><div class="header2">Geoserver Manual Update</div>
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<p>You also have the option of changeing the Geoserver username and password by logging
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in directly to the Geoserver. For more information on changing the credentials directly,
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refer to the <a href="./geoserver-manual-configure.html">Geoserver Password Change documentation</a>.
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Note that once you change the credentails manually, you will not be able to use the
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Metacat admin tool to change it again (until a new Metacat Upgrade or installation).
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<a name="CompleteConfig"></a><div class="header1">Complete the Metacat Configuration</div>
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At this point, all the sections of the main configuration should be in a configured or
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bypassed state (fig 11). If you are configuring because of a Metacat install or upgrade,
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you will have the option to click on the "go to metacat" link and you should get taken
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directly to the running version of Metacat. Note that this may take some time depending
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on the amount of data in your database, since Metacat goes through an indexing process
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at start-up time.</p>
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<p>If you are reconfiguring an already running version of Metacat, you will not have the
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option to go directly back to Metacat. You will need to restart the server (Tomcat).</p>
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<img class="screenshot" src="./images/main-config-2.png"/>
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<div class="fig-text"> fig 11 </div>
|
