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kbase: Reorder sections 

Users are likely more interested in the main deployment
scenarios than in the detailed list of every existing RPM
package. Reorder sections accordingly.

Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Jim Fehlig <jfehlig@suse.com>
This commit is contained in:
Andrea Bolognani 2022-12-14 19:30:07 +01:00
parent 99cbca98a8
commit db7fdf6de8
1 changed files with 67 additions and 67 deletions
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134
docs/kbase/rpm-deployment.rst
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@ -20,6 +20,73 @@ of the drivers will be disabled at build time, so not all of the packages
listed on this page will exist.
Deployment choices
==================
Client only install
-------------------
If an application is capable of using multiple different virtualization drivers
it is undesirable to force the installation of a specific set of drivers. In
this case the application will merely wish to request a client only install
Alternatively if an application is intended to communicate with a hypervisor on
a remote host there is no need to install drivers locally, only a client is
needed
The only required package is the `libvirt-libs`, however, it is useful to
also install `libvirt-client`.
Every possible virt driver
--------------------------
There is rarely a need to install every virt driver at once on a given host.
In the unlikely event that this is needed, however, the `libvirt` package
should be installed.
Note that this doesn't actually pull in the hypervisors, only the libvirt
code to talk to the hypervisors.
Full features for one virt driver
---------------------------------
This is a common default installation profile when there is no need to minimise
the on-disk footprint.
This is achieved by installing the `libvirt-daemon-XXXX` package for the
virtualization driver that is desired. This will also pull in the default
set of hypervisor packages too.
Since this installs every possible libvirt feature for the virtualization
driver in question, the on-disk footprint is quite large. The in-memory
footprint of the daemons is also relatively large since a lot of code is
loaded.
Minimal features for one virt driver
------------------------------------
This is the best installation profile when it is desired to minimize the
on-disk footprint.
This is achieved by installing the individual `libvirt-daemon-driver-XXX`
packages needed for the features that will be used. This will not pull in the
hypervisor packages, allowing a fine grained set of hypervisor features to be
chosen separately.
Since this allows fine grained installation of individual libvirt drivers,
this results in the lowest on-disk footprint. The in-memory footprint of
the daemons is also minimized by reducing the code loaded.
As an example, the smallest possible installation for running KVM guests can
be achieved by installing `libvirt-daemon-driver-qemu` and `qemu-kvm-core`.
This will exclude all the secondary libvirt drivers for storage, networking
and host devices, leaving only the bare minimum functionality for managing
KVM guests.
RPM packages
============
@ -308,70 +375,3 @@ RPM packages
between libvirt and its daemons. Since production deployments should all be
using a TLS encrypted, this only useful for development hosts with a libvirt
daemon configured without encryption.
Deployment choices
==================
Client only install
-------------------
If an application is capable of using multiple different virtualization drivers
it is undesirable to force the installation of a specific set of drivers. In
this case the application will merely wish to request a client only install
Alternatively if an application is intended to communicate with a hypervisor on
a remote host there is no need to install drivers locally, only a client is
needed
The only required package is the `libvirt-libs`, however, it is useful to
also install `libvirt-client`.
Every possible virt driver
--------------------------
There is rarely a need to install every virt driver at once on a given host.
In the unlikely event that this is needed, however, the `libvirt` package
should be installed.
Note that this doesn't actually pull in the hypervisors, only the libvirt
code to talk to the hypervisors.
Full features for one virt driver
---------------------------------
This is a common default installation profile when there is no need to minimise
the on-disk footprint.
This is achieved by installing the `libvirt-daemon-XXXX` package for the
virtualization driver that is desired. This will also pull in the default
set of hypervisor packages too.
Since this installs every possible libvirt feature for the virtualization
driver in question, the on-disk footprint is quite large. The in-memory
footprint of the daemons is also relatively large since a lot of code is
loaded.
Minimal features for one virt driver
------------------------------------
This is the best installation profile when it is desired to minimize the
on-disk footprint.
This is achieved by installing the individual `libvirt-daemon-driver-XXX`
packages needed for the features that will be used. This will not pull in the
hypervisor packages, allowing a fine grained set of hypervisor features to be
chosen separately.
Since this allows fine grained installation of individual libvirt drivers,
this results in the lowest on-disk footprint. The in-memory footprint of
the daemons is also minimized by reducing the code loaded.
As an example, the smallest possible installation for running KVM guests can
be achieved by installing `libvirt-daemon-driver-qemu` and `qemu-kvm-core`.
This will exclude all the secondary libvirt drivers for storage, networking
and host devices, leaving only the bare minimum functionality for managing
KVM guests.