reindex
Magento2 indexes
First of all you need to change the directory to shell folder under magento root
Checking for the status of all indexes
php bin/magento indexer:status
Re-indexing a single index
Each index has its own index key that you can use to reference it when asking Magento to re-index. To get these keys, you can use the following command:
php bin/magento indexer:info