# Revision history [back]

### neutron database

Hi, I have some issues with neutron and i would drop the neutron DB. (this is the advise to my previous question https://ask.openstack.org/en/question/127627/hi-im-trying-to-configure-openstack-queens-once-applied-the-network-option-2-self-service-ive-switched-to-network-option-1-provider-i-think-this/ )

I followed the installation procedure in the guide https://docs.openstack.org/neutron/queens/install/controller-install-ubuntu.html. What is the proper way to uninstall neutron and drop the database? Moreover i checked users in db and i have repetitions

MariaDB [(none)]> SELECT User FROM mysql.user;


+----------+

| User |

+----------+

| glance |

| keystone |

| neutron |

| nova |

| glance |

| keystone |

| mysql |

| neutron |

| nova |

| root |

+----------+

What does it mean?