# CentOS Stream notes
###### tags: `Documentation`
## notes from 1/19 rel-del sync
* https://blog.centos.org/2020/12/centos-stream-is-continuous-delivery/
* Fedora ELN https://docs.fedoraproject.org/en-US/eln/
* this is the future base of RHEL, CentOS
* Fedora 34 -> RHEL 9 -> RHEL 9.1
* Fedora 34 -> CentOS-9-stream -> CentOS-9-stream
* https://blog.centos.org/wp-content/uploads/2020/12/fedora-centos-stream-rhel-high-level.v4.png
* CentOS Stream Compose
* https://composes.centos.org/
## How this relates to CI
* centos-8-stream and centos-9-stream nodes rebuilt nightly upstream
* we will NOT be able to pin these releases...
* Therefore our centos-8-stream pipelines should probably live on and shift to the above highlighted compose builds
* detect latest centos-*-stream compose
* inject repos ontop of production nodepool node
* run standalone + standalone build containers
### RHEL 9 notes
https://trello.com/b/UxQnPO2Y/rhel9-openstack-changes