{"id":609,"date":"2016-01-21T04:14:36","date_gmt":"2016-01-21T09:14:36","guid":{"rendered":"https:\/\/on-linelearning.ca\/epub\/?post_type=chapter&p=609"},"modified":"2019-10-07T04:52:10","modified_gmt":"2019-10-07T08:52:10","slug":"evolution","status":"publish","type":"chapter","link":"https:\/\/on-linelearning.ca\/mem\/chapter\/evolution\/","title":{"raw":"Evolution","rendered":"Evolution"},"content":{"raw":"

Introduction<\/h1>\r\nIn the life of a computing system, the administrator and stakeholders can choose not to change the existing system, or move forward to the latest upgrades.\u00a0 On January 13, 2016 after more than two months of research and testing, the administrators chose to move Pressbooks from CentOs 7 to a Ubuntu OS 15.10 with approximately 60 seconds of interruption in services.\u00a0 Upgrading included WordPress 4.4.1, WordPress plugins, Pressbooks, Pressbooks Textbook, PHP, and MYSQL applications.\r\n

Plugins<\/span><\/h2>\r\nTable 7.1 WordPress Pressbooks Enabled Network Plugins\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n
PLUGIN<\/strong><\/td>\r\nDESCRIPTION<\/strong><\/td>\r\n<\/tr>\r\n
Enable Media Replace<\/a><\/strong><\/td>\r\nEnable replacing media files by uploading a new file in the \"Edit Media\" section of the WordPress Media Library.\r\nVersion 3.0.4 | By M\u00e5ns Jonasson<\/td>\r\n<\/tr>\r\n
jQuery Smooth Scroll<\/a><\/strong><\/td>\r\nThe plugin not only add smooth scroll to top feature\/link in the lower-right corner of long pages while scrolling but also makes all jump links to scroll smoothly.\r\nVersion 1.4.0 | By BlogSynthesis<\/td>\r\n<\/tr>\r\n
Pressbooks<\/a><\/strong><\/td>\r\nSimple Book Production\r\nVersion 3.5.2 | By BookOven Inc.<\/td>\r\n<\/tr>\r\n
Pressbooks mPDF<\/a><\/strong><\/td>\r\nOpen source PDF generation for Pressbooks via the mPDF library.\r\nVersion 1.0.1 | By Brad Payne<\/td>\r\n<\/tr>\r\n
Pressbooks Textbook<\/a><\/strong><\/td>\r\nA plugin that extends Pressbooks for textbook authoring\r\nVersion 2.2.2 | By Brad Payne<\/td>\r\n<\/tr>\r\n
Simple Comment Editing<\/a><\/strong><\/td>\r\nSimple comment editing for your users.\r\nVersion 1.9.1 | By Ronald Huereca<\/td>\r\n<\/tr>\r\n
SVG Support<\/a><\/strong><\/td>\r\nAllow SVG file uploads using the WordPress Media Library uploader plus direct styling of SVG elements using CSS.\r\nVersion 2.2.2 | By Benbodhi<\/td>\r\n<\/tr>\r\n
Thin Out Revisions<\/a><\/strong><\/td>\r\nA plugin for better revision management. Enables flexible management for you.\r\nVersion 1.8.3 | By Hirokazu Matsui<\/td>\r\n<\/tr>\r\n
UpdraftPlus - Backup\/Restore<\/a><\/strong><\/td>\r\nBackup and restore: take backups locally, or backup to Amazon S3, Dropbox, Google Drive, Rackspace, (S)FTP, WebDAV & email, on automatic schedules.\r\nVersion 2.11.29.22 | By UpdraftPlus.com, David Anderson<\/td>\r\n<\/tr>\r\n
Wordfence Security<\/a><\/strong><\/td>\r\nWordfence Security - Anti-virus, Firewall and High Speed Cache\r\nVersion 6.0.24 | By Wordfence<\/td>\r\n<\/tr>\r\n
WP First Letter Avatar<\/a><\/strong><\/td>\r\nSet custom avatars for users with no Gravatar. The avatar will be the first (or any other) letter of the user's name on a colorful background.\r\nVersion 2.2.3 | By Dev49.net<\/td>\r\n<\/tr>\r\n
WP Slimstat Analytics<\/a><\/strong><\/td>\r\nThe leading web analytics plugin for WordPress\r\nVersion 4.3 | By Camu<\/td>\r\n<\/tr>\r\n
WP SlimStat - Default Filters<\/strong><\/td>\r\nDetermine what filters should be loaded by default when your reports are initialized.\r\nVersion 1.4 | By Slimstat<\/td>\r\n<\/tr>\r\n
WP SlimStat - Email Reports<\/strong><\/td>\r\nOverride your sites' settings with a global configuration\r\nVersion 2.2 | By WP Slimstat<\/td>\r\n<\/tr>\r\n
WP SlimStat - Export to Excel<\/strong><\/td>\r\nExport your reports as a CSV file.\r\nVersion 2.5.2 | By WP Slimstat<\/td>\r\n<\/tr>\r\n
WP SlimStat - Firewall Fix<\/strong><\/td>\r\nFix the collection of IP addresses when the webserver is behind a proxy, firewall or load balancer.\r\nVersion 1.6.1 | By WP Slimstat<\/td>\r\n<\/tr>\r\n
WP SlimStat - Network Settings<\/strong><\/td>\r\nOverride your sites' settings with a global configuration\r\nVersion 1.2.1 | By Camu<\/td>\r\n<\/tr>\r\n
WP SlimStat - Network Analysis<\/strong><\/td>\r\nAccess a network view of your reports.\r\nVersion 1.4 | By Camu<\/td>\r\n<\/tr>\r\n
WP SlimStat - Track Cookies<\/strong><\/td>\r\nCollect all the cookies associated with the domain sent by the browser.\r\nVersion 1.5 | By WP Slimstat<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\nThe new WordPress plugins were: Plugin Activation Status, Pressbooks mPDF,\u00a0Simple Comment Editing, and WP First Letter Avatar. The Responsive Scrolling Tables and Plugin Activation Status plugins were uninstalled, as both were redundant with latest WordPress and Pressbook upgrade. The Simple Comment Editing plugin was added to enhance the commenting option. The epub-fhd.athabascau.ca site is primarily for authoring and distribution of mobile file formats, with support from web page versions. Hence, commenting supports the content, rather than an extension to further discussions appropriate to blogs or forum based systems. Comment spam can become a concern that can be partially mitigated with an anti-spam plugin that is compatible with the native WordPress commenting system. In general, more plugins increase the potential security risk, hence less is better for the overall health of the e-publishing system. The value of each plugin has to be considered in comparison to its value for the end-users. Another factor, is the WordPress core that continues to improve and may include functionality that previously existed as a plugin. Care in selection of appropriate plugins to the Pressbook site is a challenge in a constantly changing digital environment. In example, an aggregate multisite RSS feed plugin may be useful in pushing the latest page changes to end-users from the main site.\u00a0 However, Wordpress already has built-in RSS feed functionality for each sub-site.\r\n\r\nPressbooks has dropped mPDF from its core plugin.\u00a0 Fortunately, BC Campus programmer Brad Payne[footnote]Brad Payne - http:\/\/bradpayne.ca\/[\/footnote] has created a Pressbooks mPDF plugin to restore open source mPDF generation[footnote]mPDF - http:\/\/www.mpdf1.com\/mpdf\/index.php[\/footnote].\u00a0 Currently the Pressbooks symbionts folder includes a prince folder that suggest Pressbooks will continue to include commercialware support for PDF generation in its core plugin.\r\n

Same Domain Different Server<\/h1>\r\nThe workflow to achieve minimal interruption in services between the old production server on CentOS and the new server on Ubuntu was achieved through the following process based on key preparations.\r\n

Preparations<\/h2>\r\n