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Silverback WP+Bedrock > Google App Engine Migration

  • Update Google APT key curl https://packages.cloud.google.com/apt/doc/apt-key.gpg | sudo apt-key add -
  • Install / Update Gogole Cloud SDK via sudo apt-get update && sudo apt-get install google-cloud-sdk
  • Backup or rename any php.ini files in project root
  • Unzip the file in project root unzip gae_migrate.zip
  • Copy environment variables to from production .env file env_variables.yaml
    • Use this search and replace =(.*[^'])$ => : '$1' regex to reformat the file
  • Count files in the /web folder with find ./web/ -type f | wc -l and verify that are less than ~9000. If more try to delete unnecessary plugins
  • Open the Cloud IAM console and add following roles to GCP user that will deploy the app:
    • Editor
    • AppEngine Deployment
    • Storage Object Administrator
  • Perform the following replacement in config/application.php:
/**
 * URLs
 */
define('WP_HOME', env('WP_HOME'));
define('WP_SITEURL', env('WP_SITEURL'));

with

/**
 * URLs
 */

// Determine HTTP or HTTPS, then set WP_SITEURL and WP_HOME
if ((isset($_SERVER['HTTPS']) && $_SERVER['HTTPS'] !== 'off') || (isset($_SERVER['SERVER_PORT']) && $_SERVER['SERVER_PORT'] == 443)) {
    $protocol_to_use = 'https://';
} else {
    $protocol_to_use = 'http://';
}

if (isset($_SERVER['HTTP_HOST'])) {
    define('HTTP_HOST', $_SERVER['HTTP_HOST']);
} else {
    define('HTTP_HOST', 'localhost');
}

define('WP_HOME', env('WP_HOME') ?: $protocol_to_use . HTTP_HOST);
define('WP_SITEURL',  env('WP_SITEURL') ?: $protocol_to_use . HTTP_HOST . '/wp' );
  • Perform the following replacement in config/environments/production.php:
/**
 * Setup Log Handlers
 */
$metadataProvider = new Google\Cloud\Core\Report\SimpleMetadataProvider([], '', 'website', '1.0');

$loggingClient = new Google\Cloud\Logging\LoggingClient();
$psrLogger = $loggingClient->psrLogger('wp-website', [
    'batchEnabled' => true,
    'metadataProvider' => $metadataProvider,
]);

Google\Cloud\ErrorReporting\Bootstrap::init($psrLogger); 

Monolog\Registry::getInstance( 'wordpress' )->pushHandler( new Monolog\Handler\PsrHandler( $psrLogger ) );

with

/**
 * Setup Log Handlers
 */
Monolog\Registry::getInstance( 'wordpress' )->pushHandler( new Monolog\Handler\ErrorLogHandler() );
  • Set the project
  • Choose the app region from the Console (requires admin privileges)
  • Deploy the app gcloud app deploy app.yaml cron.yaml and check if navigating the .appspot.com domain redirects to the main domain
  • Add and verify all the main domains to AppEngine Settings
  • Disable the cert auto management for all domains
  • Remove php.ini from .gitignore file
  • Remove the Editor role for the deploy user
  • Remove all outadate GAE versions

Improovements

  • Update WP and deps to the latest version with composer update --prefer-dist --no-dev
  • Deploy again