To do the Wordpress to Drupal 8 migration, you should have Wordpress site database, Drush 7 and Drupal 8 site.
You can use the following 'migrate-manifest' drush command from Drupal 8 root to do the migration.
drush migrate-manifest manifest_wordpress.yml --legacy-db-url=mysql://{dbuser}:{dbpass}@localhost/{dbname}The manifest_wordpress.yml file contains IDs of each migration Entity. Here is the one used for migration,
- posts
- users
- comments