Convert2RHEL

[steve.harder]

Hi all,
We have 4 CentOS 7.8 minimal (updated with many centos 7.9 latest rpms to ensure security bridges)
The systems are offline, no internet connection at all

Does RHEL support Convert2RHEL of CentOS minimal?
When working in an offline environment do we have to configure RH Satellite infrastructure, seems a bit overkill and complex for 4 nodes that will never be updated without QA first

Thanks,

[jlehtone]

Does RHEL support Convert2RHEL of CentOS minimal?

I don't know answer to that, but have to note that the "minimal" usually refers to "Minimal Install", which is a yum Environment Group:

Code: Select all

$ yum -q group info "Minimal Install"

Environment Group: Minimal Install
 Environment-Id: minimal
 Description: Basic functionality.
 Mandatory Groups:
    core
 Optional Groups:
   +debugging

CentOS 7 has only one yum group in Minimal Install, the 'core' that is:

Code: Select all

$ yum -q group info core

Group: Core
 Group-Id: core
 Description: Smallest possible installation.
 Mandatory Packages:
    audit
    basesystem
    bash
    btrfs-progs
    coreutils
    cronie
    curl
    dhclient
    e2fsprogs
    filesystem
    firewalld
    glibc
    hostname
    initscripts
    iproute
    iprutils
    iptables
    iputils
    irqbalance
    kbd
    kexec-tools
    less
    man-db
    ncurses
    openssh-clients
    openssh-server
    parted
    passwd
    plymouth
    policycoreutils
    procps-ng
    rootfiles
    rpm
    rsyslog
    selinux-policy-targeted
    setup
    shadow-utils
    sudo
    systemd
    tar
    tuned
    util-linux
    vim-minimal
    xfsprogs
    yum
 Default Packages:
    NetworkManager
    NetworkManager-team
    NetworkManager-tui
    aic94xx-firmware
    alsa-firmware
    biosdevname
    dracut-config-rescue
    ivtv-firmware
    iwl100-firmware
    iwl1000-firmware
    iwl105-firmware
    iwl135-firmware
    iwl2000-firmware
    iwl2030-firmware
    iwl3160-firmware
    iwl3945-firmware
    iwl4965-firmware
    iwl5000-firmware
    iwl5150-firmware
    iwl6000-firmware
    iwl6000g2a-firmware
    iwl6000g2b-firmware
    iwl6050-firmware
    iwl7260-firmware
    kernel-tools
    libsysfs
    linux-firmware
    lshw
    microcode_ctl
    postfix
    sg3_utils
    sg3_utils-libs

One may have chosen additional groups during install and one can have both installed and removed packages after install.
These days I always install system with "minimal" and then run Ansible playbook to make it full GUI Workstation (or something else).

Thinking of conversion, the less system has -- particularly third-party packages and customizations -- the easier it is to replace the bits and pieces that have to be replaced. Therefore, a minimal system should be the easiest to convert.

[steve.harder]

Does RHEL support Convert2RHEL of CentOS minimal?

I don't know answer to that, but have to note that the "minimal" usually refers to "Minimal Install", which is a yum Environment Group:

Code: Select all

$ yum -q group info "Minimal Install"

Environment Group: Minimal Install
 Environment-Id: minimal
 Description: Basic functionality.
 Mandatory Groups:
    core
 Optional Groups:
   +debugging

CentOS 7 has only one yum group in Minimal Install, the 'core' that is:

Code: Select all

$ yum -q group info core

Group: Core
 Group-Id: core
 Description: Smallest possible installation.
 Mandatory Packages:
    audit
    basesystem
    bash
    btrfs-progs
    coreutils
    cronie
    curl
    dhclient
    e2fsprogs
    filesystem
    firewalld
    glibc
    hostname
    initscripts
    iproute
    iprutils
    iptables
    iputils
    irqbalance
    kbd
    kexec-tools
    less
    man-db
    ncurses
    openssh-clients
    openssh-server
    parted
    passwd
    plymouth
    policycoreutils
    procps-ng
    rootfiles
    rpm
    rsyslog
    selinux-policy-targeted
    setup
    shadow-utils
    sudo
    systemd
    tar
    tuned
    util-linux
    vim-minimal
    xfsprogs
    yum
 Default Packages:
    NetworkManager
    NetworkManager-team
    NetworkManager-tui
    aic94xx-firmware
    alsa-firmware
    biosdevname
    dracut-config-rescue
    ivtv-firmware
    iwl100-firmware
    iwl1000-firmware
    iwl105-firmware
    iwl135-firmware
    iwl2000-firmware
    iwl2030-firmware
    iwl3160-firmware
    iwl3945-firmware
    iwl4965-firmware
    iwl5000-firmware
    iwl5150-firmware
    iwl6000-firmware
    iwl6000g2a-firmware
    iwl6000g2b-firmware
    iwl6050-firmware
    iwl7260-firmware
    kernel-tools
    libsysfs
    linux-firmware
    lshw
    microcode_ctl
    postfix
    sg3_utils
    sg3_utils-libs

One may have chosen additional groups during install and one can have both installed and removed packages after install.
These days I always install system with "minimal" and then run Ansible playbook to make it full GUI Workstation (or something else).

Thinking of conversion, the less system has -- particularly third-party packages and customizations -- the easier it is to replace the bits and pieces that have to be replaced. Therefore, a minimal system should be the easiest to convert.

Thanks so much for the prompt reply