{"id":1161,"date":"2014-09-16T13:48:44","date_gmt":"2014-09-16T13:48:44","guid":{"rendered":"http:\/\/evolphin.com\/help\/?p=1161"},"modified":"2020-12-14T15:57:05","modified_gmt":"2020-12-14T20:57:05","slug":"configuring-preview-server","status":"publish","type":"post","link":"https:\/\/evolphin.com\/help\/administration-server\/configuration-server\/configuring-preview-server\/","title":{"rendered":"Configuring Preview Server"},"content":{"rendered":"\n<p>The Preview Server enables preview generation for the Zoom setup. It acts as a cache between various Zoom Clients and the Zoom Server.<br>Preview Server needs a running Zoom server to work with, without any Zoom server Preview Server won&#8217;t work and can&#8217;t serve the request.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Prerequisites\/Checklist<\/h2>\n\n\n\n<ol class=\"wp-block-list\"><li>Up and Running Zoom server. It may be on the same machine or different machine.<ol><li>Make sure the Zoom server has valid license installed.<\/li><li>Make sure the Zoom server has super admin account created.<\/li><\/ol><\/li><li>Information about Zoom server URL with protocol, host and port.<ol><li>Zoom Server URL will look like: https:\/\/zoom-server:8880.<\/li><li>Make sure you know the correct port and host name of the Zoom server.<\/li><\/ol><\/li><li>Make sure the Zoom server version is compatible with the Preview Server.<\/li><li>Make sure you can ping the Zoom server host from the Preview Server.<\/li><li><strong>Important: <\/strong>Make sure the Zoom server port is <em>reachable<\/em> from the Preview Server. Many times Admins forget to whitelist or open the Zoom server port. Please make sure to add proper firewall\/iptables rules which allows access to Zoom server port from the Preview Server.<\/li><li><strong>Important: <\/strong>Further configuration assumes, you have access to the Preview Server machine, like <strong>SSH<\/strong> or <strong>RDP<\/strong> access to the main server machine.<\/li><\/ol>\n\n\n\n<h3 class=\"wp-block-heading\">Locate Preview Server Configuration XML File<\/h3>\n\n\n\n<h6 class=\"wp-block-heading\"><strong>On Windows<\/strong><\/h6>\n\n\n\n<ul class=\"wp-block-list\"><li>C:\\Program Files (x86)\\Evolphin\\DAM\\conf\\preview-server.xml<\/li><\/ul>\n\n\n\n<p><strong>Note:<\/strong> If you don&#8217;t find the server at this location, you might have installed the server in a different Drive or directory.<\/p>\n\n\n\n<h6 class=\"wp-block-heading\"><strong>On Linux<\/strong><\/h6>\n\n\n\n<ul class=\"wp-block-list\"><li>\/home\/evolphin\/zoom\/conf\/preview-server.xml<\/li><\/ul>\n\n\n\n<p><strong>Note:<\/strong> If you don&#8217;t find the server at this location, you might have installed the server in a different Drive or directory.<\/p>\n\n\n\n<p><\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"Connect-Preview-Server-with-Zoom-Server\">Connect Preview Server with Zoom Server<\/h2>\n\n\n\n<ul class=\"wp-block-list\"><li>Open and edit <strong>preview-server.xml<\/strong> file.<\/li><li>Locate XML tag <strong>&lt;zoomServerHostPort&gt;<\/strong>.<\/li><li>Enter the Zoom server URL in the <strong>&lt;zoomServerHostPort&gt;<\/strong> tag.<br>Like: <strong>&lt;zoomServerHostPort&gt;<\/strong>https:\/\/zoom-server:8880<strong>&lt;\/zoomServerHostPort&gt;<\/strong>.<\/li><li>Save the file and <strong>restart<\/strong> the Preview Server.<\/li><li>Open Webclient and see if you are able to connect and work.<\/li><\/ul>\n\n\n\n<p><\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"Set-Preview-Server-Cache-Location\">Set Preview Server Cache Location<\/h2>\n\n\n\n<p>The default Preview Server cache location is <strong>[SERVER_INSTALL_DIR]\/webcontext\/servers\/PreviewServer\/cache<\/strong><br>The &#8220;<strong>[SERVER_INSTALL_DIR]<\/strong>&#8221; is the installation location of the Preview Server.<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Open and edit <strong>preview-server.xml<\/strong> file.<\/li><li>Locate the XML tag <strong>&lt;previewCacheLocation&gt;<\/strong>.<\/li><li>Change the cache location according to you need.<br>Like: <strong>&lt;previewCacheLocation&gt;<\/strong>\/home\/evolphin\/zoom-deploy\/preview-cache<strong>&lt;\/previewCacheLocation&gt;<\/strong>.<\/li><li>Save the file and <strong>restart<\/strong> the Preview Server.<\/li><\/ul>\n\n\n\n<p><strong>Note: <\/strong>If you are relocating the Preview Server cache, it would be best to copy the contents of existing cache directory to the new location. Otherwise Preview Server has to generate the cache files again.<\/p>\n\n\n\n<p><\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"Configure-Preview-Server-Cache-Cleanup\">Configure Preview Server Cache Cleanup<\/h2>\n\n\n\n<p>By default Preview Server doesn&#8217;t do any cache cleanup. Over the time that will result in the increased disk usage.<br>It is recommended to enable the cache clean up and keep cache size in check. Please follow the below given details carefully to setup the cache cleaning rules.<\/p>\n\n\n\n<p><strong>Note:<\/strong> If this is a fresh install of Windows Server, it is recommended to use an alternative text editor such as Notepad++ for editing the text files. It makes reading the configuration files more legible.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><a name=\"configuringZoom-settingCacheCleaningRules\"><\/a>Setting Cache Cleaning Rules<\/h3>\n\n\n\n<ul class=\"wp-block-list\"><li>To setup the cache cleaning rules, you need to access to the <em>preview-server.xml<\/em> file. A section above explains where to find the <em>preview-server.xml<\/em> on the Preview Server.<\/li><li>Once you have located the preview-server.xml file, open it in your favorite editor.<\/li><li>Locate the section: <strong>&lt;cacheCleaningRules&gt;<\/strong> in the <em>preview-server.xml<\/em> file<\/li><\/ul>\n\n\n\n<p>Here is an example of how this section looks in the XML file:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;previewserverspec>\n...\n...\n&lt;!-- EXAMPLE OF CACHE CLEANING RULES -->\n&lt;!-- These rules keeps the cache size under 200GB and performs the clean up in every 7 days -->\n &lt;cacheCleaningRules>\n    &lt;cleanFrequencyInDays>7&lt;\/cleanFrequencyInDays>\n    &lt;cleanFrequencyHours>0&lt;\/cleanFrequencyHours>\n    &lt;cleanFrequencyMinutes>0&lt;\/cleanFrequencyMinutes>\n    &lt;cacheCleanThresholdPercentage>90&lt;\/cacheCleanThresholdPercentage>\n    &lt;maxAllowedCacheSizeInGB>200.0&lt;\/maxAllowedCacheSizeInGB>\n    &lt;cleanDownloadsOlderThan>5&lt;\/cleanDownloadsOlderThan>\n    &lt;additionalCleanupOption>DEFAULT&lt;\/additionalCleanupOption>\n  &lt;\/cacheCleaningRules>\n...\n...\n&lt;\/previewserverspec><\/code><\/pre>\n\n\n\n<p><strong>Understanding the cache cleaning tags:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>cleanFrequencyInDays &#8211; Controls the clean up schedule in terms of days.<\/li><li>cleanFrequencyHours &#8211; Controls the clean up schedule in terms of hours.<\/li><li>cleanFrequencyMinutes &#8211; Controls the clean up schedule in terms of minutes.<\/li><li>cacheCleanThresholdPercentage &#8211; This values controls the minimum threshold to trigger the cleanup is cache is filled up-to this threshold.  For example: if <em>maxAllowedCacheSizeInGB<\/em> is set to 100GB, and <em>cacheCleanThresholdPercentage<\/em> is 80, then the Preview server will try to maintain the cache size between 80GB to 100GB.<\/li><li>maxAllowedCacheSizeInGB &#8211; Max allowed cache size in GB. Beyond this point, Preview Server will clean the files in the reverse chronological of their last access time. Server will give the preference to the files which have not been accessed recently.<\/li><li>cleanDownloadsOlderThan &#8211; Max cleanup time in days for the custom downloads like zips, collection downloads etc&#8230;<\/li><li>additionalCleanupOption &#8211; This is for now has to be set to <em>DEFAULT<\/em>.<\/li><\/ul>\n\n\n\n<p><strong>Note:<\/strong> In the <em>preview-server.xml<\/em> you might see more options inside the cache cleaning rules tag. You can ignore other options which are not listed here. Those options are planned to be removed in the future releases.<\/p>\n\n\n\n<p><strong>Note:<\/strong> Make sure to save the changes and restart the Preview Server afterwards. Preview server logs can be inspected for the cleaning working. Preview server will print the various logs messages related to the cache size and found files during the cleanup.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"Setting-Preview-Server-Location\">Setting Preview Server Location<\/h2>\n\n\n\n<p>From Zoom 7.3 onwards, location can be set for the Preview Server which in turn will be the location of all the web-based Zoom apps connecting to this Preview Server.<\/p>\n\n\n\n<p><strong>Note: <\/strong>Locations are configured on the Zoom Server using <a href=\"\/docs\/zoom-server\/configuration-server\/server-zoom-properties\/\">Server Zoom Properties page<\/a> in the Web Management Console. After these locations are set up, these may be chosen by any desktop Zoom Clients or set for the Preview Server.<\/p>\n\n\n\n<p><strong>Follow these steps to set the location for the Preview Server:<\/strong><\/p>\n\n\n\n<ol class=\"wp-block-list\" start=\"0\"><li>You could set the location for Preview Server using one of two files. Update any one of these files on the Preview Server: <ol style=\"list-style-type: lower-alpha;\"><li><strong>Option 1:<\/strong> Using <em>preview-server.xml<\/em>.<ol style=\"list-style-type: lower-alpha;\"><li>Set the tag &lt;currentLocation> to the desired location. If the tag exists then update its value and if it does not exist then add it. For example: <br>&lt;previewserverspec><br>&#8230;.<br>  <em>&lt;currentLocation>Bristol&lt;\/currentLocation> <\/em><br>&#8230;<br>&lt;\/previewserverspec><\/li><li><div class=\"warning\"><strong>Note: <\/strong>This location must already be present and configured on the Zoom Server.<\/div><\/li><li>Save the changes and restart the Preview Server.<\/li><\/ol><\/li><\/ol><ol style=\"list-style-type: lower-alpha;\"><li><strong>Option 2: <\/strong>Using <em>zoom.properties<\/em>: <ol style=\"list-style-type: lower-roman;\"><li>Open <strong>zoom.properties<\/strong> for editing from the<strong> .zm<\/strong> folder for the Preview Server (Windows &#8211; [OSInstallDir]\\Windows\\System32\\config\\systemprofile\\.zm\\ and Linux &#8211; $Home\/.zm\/)<\/li><li>Set the property <strong>CURRENT_LOCATION<\/strong> property to the desired location. If the property exists then update its value and if it does not exist then add it. For example: <br>CURRENT_LOCATION=Bristol <\/li><li><strong>Note: <\/strong>This location must already be present and configured on the Zoom Server.<\/li><li>Save the changes and restart the Preview Server.<\/li><\/ol><\/li><\/ol><\/li><\/ol>\n\n\n\n<p>The desired location has now been set for the Preview Server. This location will now be used for web-based Zoom clients like the Web Client and Web Asset Browser.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>The Preview Server enables preview generation for the Zoom setup. It acts as a cache between various Zoom Clients and the Zoom Server.Preview Server needs a running Zoom server to work with, without any Zoom server Preview Server won&#8217;t work and can&#8217;t serve the request. Prerequisites\/Checklist Up and Running Zoom server. It may be on [&hellip;]<\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"default","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[31,92],"tags":[251,98,21],"class_list":["post-1161","post","type-post","status-publish","format-standard","hentry","category-configuration-server","category-preview","tag-cache-cleanup","tag-preview-server","tag-zoom-5"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Configuring Preview Server - Evolphin Documentation<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/evolphin.com\/help\/administration-server\/configuration-server\/configuring-preview-server\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Configuring Preview Server - Evolphin Documentation\" \/>\n<meta property=\"og:description\" content=\"The Preview Server enables preview generation for the Zoom setup. 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