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 Appendix A. Reserved user IDs

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

[Note]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.

Table A.1. Reserved user IDs
Name Description ID
ceilometer OpenStack Ceilometer Daemons Assigned during package installation
cinder OpenStack Cinder Daemons Assigned during package installation
glance OpenStack Glance Daemons Assigned during package installation
heat OpenStack Heat Daemons Assigned during package installation
keystone OpenStack Keystone Daemons Assigned during package installation
neutron OpenStack Neutron Daemons Assigned during package installation
nova OpenStack Nova Daemons Assigned during package installation
swift OpenStack Swift Daemons Assigned during package installation
trove OpenStack Trove Daemons Assigned during package installation

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

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