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A Red Hat training course is available for Red Hat OpenStack Platform
3.7. Red Hat OpenStack Platform 10 Maintenance Release 09 July 2019
For information about the July 09, 2019 Red Hat OpenStack Platform 10 Maintenance Release, see the associated advisories at https://access.redhat.com/downloads/content/191/ver=10/rhel---7/10/x86_64/product-errata.