131 lines
4.8 KiB
Plaintext
131 lines
4.8 KiB
Plaintext
.. _operational-impacts-9cf2e610b5b3:
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===================
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Operational Impacts
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===================
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The operational impact of Debian-based |prod| is small:
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* Functional equivalence with CentOS-based |prod|
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* Use of the |prod| CLIs and APIs will remain the same:
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* |prod| on Debian will provide the same CLIs and APIs as |prod| on CentOS.
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* |prod| on Debian will run on a 5.10 based kernel.
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* |prod| on Debian will support the same set of Kubernetes APIs used in
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|prod| on CentOS.
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* The procedure to install hosts will be unchanged by the migration from
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CentOS to Debian. Only the ``grub`` menu has been modified.
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* The CLIs used for software updates (patching) will be unchanged by
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the migration from CentOS to Debian.
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* User applications running in containers on CentOS should run on Debian
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without modification. Re-validation of containers on Debian is encouraged to
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identify any exceptions.
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* A small subset of operating system-specific commands will differ. Some of
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these changes result from the switch in distributions while others are
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generic changes that have accumulated since the release of the CentOS
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distribution currently used. For example:
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* The Debian installation requires new pxeboot grub menus. See
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:ref:`Technology Preview Installation <deb-grub-deltas>`.
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* Some prompt strings will be slightly different (for example: ssh login,
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passwd command, and others).
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* Many 3rd-party software packages are running a newer version in Debian
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and this may lead to minor changes in syntax, output, config files, and
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logs.
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* The URL to expose keystone service does not have the version appended.
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* On Debian, interface and static routes need to be handled using system-API
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(host-route-\*, host-if-\* and host-addr-\*).
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* Do not edit configuration files in ``/etc/network/`` as they are
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regenerated from sysinv database after a system reboot. Any changes
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directly done there will be lost.
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* The static routes configuration file is ``/etc/network/routes``
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* Interface configuration files are located in
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``/etc/network/interfaces.d/``
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* Debian stores network information in ``/etc/network`` instead of
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``/etc/sysconfig/network-scripts`` location used in CentOS. However, the
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|prod| ``system …`` commands are unchanged. |deb-update-iso|
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* Patching on Debian is done using ostree commits rather than individual
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RPMs.
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You can see which packages are updated by ostree using the :command:`dpkg
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-l` instead of :command:`rpm -qa` used on CentOS.
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* The patching CLI commands and Horizon interactions are the same as for
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CentOS.
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* The supported patching CLI commands for |deb-eval-release| are:
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* ``sw-patch upload``
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* ``sw-patch upload-dir``
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* ``sw-patch apply``
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* ``sw-patch remove``
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* ``sw-patch delete``
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* ``sw-patch query``
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* ``sw-patch show``
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* ``sw-patch query-hosts``
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* ``sw-patch host-install``
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* ``sw-patch host-install-async``
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* ``sw-patch install-local``
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However, since Debian patches work with ostree commits rather than
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RPMs, the patch contents visible on Horizon and CLI are different.
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Running the ``sw-patch show <patch-ID>`` CLI command or selecting
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**Software Management** and the patch name in Horizon displays details
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about the contents of a Debian patch including:
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* The number of ostree commits in this patch.
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* The base commit on which the patch can be applied.
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* The commit IDs that are associated with this patch.
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**CLI**
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Sample ``sw-patch show <patch-ID>`` output:
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.. code-block:: none
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DEBIAN_RR:
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Release: 22.06
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Patch State: Available
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Status: DEV
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Unremovable: N
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RR: Y
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Summary: Reboot Required Patch 0015
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Description: Reboot Required Patch for resolving subcloud unlock issue
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Install Instructions:
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Please ensure that there is 450MB minimum available space in the directory where the patch is going to be placed.
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Warnings: This patch requires PATCH_0014 to be installed first.
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Contents:
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No. of commits: 2
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Base commit: d0a0d5ad78746c86ab477fb5ccb98d7e813484a9cb1c0a780363233794655fdc
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Commit1: a386e76d6430f7fd6693d40379cccc838445f4abd409f158b919c010da80cb83
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Commit2: 647dcef3f32d61b3d341fab905f5267c5614d804cae5d295693a6098db6e4e6d
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**Horizon**
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Sample **Software Management** > *patch name* output.
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.. figure:: figures/debian_patching_details_horizon.png
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:width: 600px
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