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Case study: Carleton University – managing 600+ single installs
- 1. Managing 600+ Single Installs
- 2. • 26,000+ Students • 4500+ Faculty and Staff • Teeny-tiny web team • Over 600 single site installs Canada’s Capital University About Carleton michael.corkum@carleton.ca @mikecorkum
- 3. How did we get here?
- 7. Function Of Doom! michael.corkum@carleton.ca @mikecorkum echo_text(‘What am I doing?’); When you feel bad about your skill level, remember that someone thought this was a good idea…
- 8. Function Of Doom! michael.corkum@carleton.ca @mikecorkum echo_text(‘What am I doing?’); When you feel bad about your skill level, remember that someone thought this was a good idea… function echo_text( $text ) { echo $text; }
- 9. When I Started michael.corkum@carleton.ca @mikecorkum • Manual updates to plugins and core via FTP • Random plugins • Simple architecture • No version control Total time to update: 5-7 days
- 10. Goals are fun… michael.corkum@carleton.ca @mikecorkum Better network architecture Make updates fast and easy Make all sites portable Track site information
- 11. When I Started michael.corkum@carleton.ca @mikecorkum Sometimes real life isn’t cutting edge…
- 12. Network Overview
- 14. Updating Code
- 19. Huh? michael.corkum@carleton.ca @mikecorkum The term "software multitenancy" refers to a software architecture in which a single instance of software runs on a server and serves multiple tenants. A tenant is a group of users who share a common access with specific privileges to the software instance.
- 20. WP Folder Theme Folder Plugin Folder SERVER ROOT /wp /wp-content/themes /wp-content/plugins INSTALL /wp /wp-content/themes /wp-content/plugins INSTALL Huh? michael.corkum@carleton.ca @mikecorkum What’s a Multitenancy?
- 21. Each Install michael.corkum@carleton.ca @mikecorkum index.php Config File WordPress (symlink) Themes (symlink) Plugins (symlink)
- 22. Each Install michael.corkum@carleton.ca @mikecorkum index.php Config File WordPress (symlink) Themes (symlink) Plugins (symlink)
- 24. Code Updates michael.corkum@carleton.ca @mikecorkum https://roots.io/using-composer-with-wordpress/
- 25. MySQL
- 27. MySQL: Always Down michael.corkum@carleton.ca @mikecorkum https://github.com/stuttter/ludicrousdb $wpdb->add_database(array( 'host' => 'localhost', 'user' => 'user', 'password' => 'password', 'name' => ‘db_name', 'write' => 1, 'read' => 0, )); $wpdb->add_database(array( 'host' => 'localhost', 'user' => 'user', 'password' => 'password', 'name' => ‘db_name', 'write' => 0, 'read' => 1, 'timeout' => 0.2, )); https://wordpress.org/plugins/hyperdb/
- 28. Portable Sites
- 29. Dynamic Config michael.corkum@carleton.ca @mikecorkum URLs define( 'CURRENT_HOST', $_SERVER['HTTP_HOST'] ); define( 'WP_HOME', 'https://' . CURRENT_HOST ); define( 'WP_SITEURL', 'https://' . CURRENT_HOST . '/wp' ); if ( CURRENT_HOST !== PRODUCTION_CURRENT_SITE ) { ob_start( function ( $page ) { return str_replace( array( PRODUCTION_CURRENT_SITE, STAGING_CURRENT_SITE, DEV_CURRENT_SITE, LOCAL_CURRENT_HOST, ), CURRENT_HOST, $page ); }); } https://scotty-t.com/2012/01/18/wordpress-in-dev-qa-and-prod/ define( 'PRODUCTION_CURRENT_SITE', 'carleton.ca/dev' ); define( 'STAGING_CURRENT_SITE', 'stage.carleton.ca/dev' ); define( 'DEV_CURRENT_SITE', 'dev.carleton.ca/dev' ); define( 'LOCAL_CURRENT_HOST', 'local.carleton.ca/dev' );
- 30. Dynamic Config michael.corkum@carleton.ca @mikecorkum Differences per environment $is_staging = ( STAGING_CURRENT_SITE === CURRENT_HOST ); $is_dev = ( DEV_CURRENT_SITE === CURRENT_HOST ); $is_local = ( LOCAL_CURRENT_HOST === CURRENT_HOST ); $wp_debug = false; $wp_debug_log = false; $wp_cache = true; $is_redis_disabled = false; if ( $is_staging ) { $wp_debug = true; $wp_debug_log = true; $wp_cache = true; $is_redis_disabled = false; } elseif ( $is_dev || $is_local ) { $wp_debug = true; $wp_debug_log = true; $wp_cache = false; $is_redis_disabled = false; } define( 'WP_DEBUG', $wp_debug ); define( 'WP_DEBUG_LOG', $wp_debug_log ); define( 'WP_DEBUG_DISPLAY', $wp_debug_display ); define( 'WP_CACHE', $wp_cache ); define( 'WP_REDIS_DISABLED', $is_redis_disabled );
- 31. Dynamic Config michael.corkum@carleton.ca @mikecorkum Databases $database_config = 'prod.php'; if ( $is_staging ) { $database_config = 'staging.php'; } elseif ( $is_dev ) { $database_config = 'dev.php'; } elseif ( $is_local ) { $database_config = 'local.php'; } require_once( $database_config ); $wpdb->add_database(array( 'host' => DB_PROD_HOST, 'user' => DB_PROD_USER_NAME, 'password' => DB_PROD_USER_PASS, 'name' => DB_PROD_USER_TABLE_PASS, 'write' => 1, 'read' => 0, )); define( 'DB_PROD_HOST', 'db.carleton.ca' ); define( 'DB_PROD_USER_NAME', 'username' ); define( 'DB_PROD_USER_PASS', 'password' ); define( 'DB_PROD_USER_TABLE', 'table_name' );
- 32. Dynamic Config michael.corkum@carleton.ca @mikecorkum .htaccess <IfModule mod_rewrite.c> RewriteEngine On RewriteRule ^composer.(lock|json)$ - [F,L] RewriteRule ^composer.dev.(lock|json)$ - [F,L] RewriteRule ^vendor/.*$ - [F,L] RewriteBase / RewriteRule ^index.php$ - [L] RewriteCond %{ENV:URI} ^$ RewriteRule ^(.*)$ - [ENV=URI:$1] RewriteCond %{ENV:BASE} ^$ RewriteCond %{ENV:URI}::%{REQUEST_URI} ^(.*)::(.*?)1$ RewriteRule ^ - [ENV=BASE:%2] RewriteCond %{REQUEST_FILENAME} !-f RewriteCond %{REQUEST_FILENAME} !-d RewriteCond %{REQUEST_FILENAME} !-l RewriteRule . %{ENV:BASE}index.php [L,QSA] </IfModule>
- 33. Update Time 20 Seconds Per Server michael.corkum@carleton.ca @mikecorkum
- 37. What’s Next?
- 38. What’s Next? michael.corkum@carleton.ca @mikecorkum MOAR SYMLINKS!!!!!!!! Simplification of Multitenancy Continuous Integration Ravens Design System
- 39. THANK YOU!