Magento 2: Not showing customers in backend grid
Looks like some error happened in the process of re-index and index status left processing. You need to reset it DB.
For example by query:
update indexer_state set status = 'invalid' where status != 'valid';
Then run:
php -f bin/magento indexer:reindex
Magento 2 not showing customers in backend grid:
Run the below commands for fix
1) php bin/magento indexer:reset customer_grid
2) php bin/magento indexer:reindex customer_grid
Thanks!
Best option is to reset and then reindex via CLI
php bin/magento indexer:reset customer_grid
php bin/magento indexer:reindex customer_grid