RedHat Enterprise Linux and clones

RHEL and CentOS documentation

There is some relevant documentation:

• CentOS 7 Release Notes and CentOS7_FAQ.

• RHEL7 documentation including Release Notes.

AlmaLinux documentation

Alma:ref:Linux resources:

• AlmaLinux Wiki

• Mirror list at https://mirrors.almalinux.org/

• To switch from CentOS 8 to Alma:ref:Linux use the EL to AlmaLinux migration tool in https://github.com/AlmaLinux/almalinux-deploy.

RockyLinux documentation

The Rocky:ref:Linux has a download page and a FAQ.

Ansible 2.9.20 does not have Rocky:ref:Linux in the hostname module file /usr/lib/python3.6/site-packages/ansible/modules/system/hostname.py. Updates have been committed to Ansible 2.9+ in PRs https://github.com/ansible/ansible/pull/74545 and https://github.com/ansible/ansible/issues/74565

CentOS Stream documentation

Information about CentOS Stream:

• https://blog.centos.org/2020/12/future-is-centos-stream/

• https://arstechnica.com/gadgets/2020/12/centos-shifts-from-red-hat-unbranded-to-red-hat-beta/

• https://www.linkedin.com/pulse/why-you-should-have-already-been-centos-stream-back-2019-smith/

Converting from CentOS Linux to CentOS Stream:

$ dnf swap centos-linux-repos centos-stream-repos
$ dnf distro-sync

CentOS AppStream

CentOS 8 (and the clones) has a new concept AppStream:

Content in the AppStream repository includes additional user space applications, runtime languages, and databases in support of the varied workloads and use cases. Content in AppStream is available in one of two formats - the familiar RPM format and an extension to the RPM format called modules.

See:

• Using AppStream.

• Installing CentOS 8 content including module streams.