openstack-manuals/doc/install-guide/source/app_reserved_uids.rst
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Appendix A. Reserved user IDs

OpenStack reserves certain user IDs to run specific services and own specific files. These user IDs are set up according to the distribution packages. The following table gives an overview.

Note

Some OpenStack packages generate and assign user IDs automatically during package installation. In these cases, the user ID value is not important. The existence of the user ID is what matters.

Reserved user IDs
Name Description ID
ceilometer OpenStack ceilometer daemons

ubuntu or obs

Assigned during package installation

rdo

166

cinder OpenStack cinder daemons

ubuntu or obs

Assigned during package installation

rdo

165

glance OpenStack glance daemons

ubuntu or obs

Assigned during package installation

rdo

161

heat OpenStack heat daemons

ubuntu or obs

Assigned during package installation

rdo

187

keystone OpenStack keystone daemons

ubuntu or obs

Assigned during package installation

rdo

163

neutron OpenStack neutron daemons

ubuntu or obs

Assigned during package installation

rdo

164

nova OpenStack nova daemons

ubuntu or obs

Assigned during package installation

rdo

162

swift OpenStack swift daemons

ubuntu or obs

Assigned during package installation

rdo

160

trove OpenStack trove daemons Assigned during package installation

Each user belongs to a user group with the same name as the user.