================
libvirt_provider
================
.. image:: https://img.shields.io/pypi/pyversions/libvirt-provider.svg
:target: https://img.shields.io/pypi/pyversions/libvirt-provider
.. image:: https://badge.fury.io/py/libvirt-provider.svg
:target: https://badge.fury.io/py/libvirt-provider
A libvirt orchestration plugin for `corc <https://github.com/rasmunk/corc>`_
------------
Installation
------------
.. code-block:: bash
pip install libvirt-provider
------------
Dependencies
------------
Before the ``libvirt-provider`` can be succesfully installed, the distribution associated dependency script
in the ``devel_dep`` folder should be executed. This will install the nessesary library files that ``libvirt-provider``
require to function properly.
In addition, before an actual resource such as an instance or a container can be created by ``libvirt-provider``,
the required ``libvirt`` daemon has to be running on the system. This can be installed via the distribution installer
scripts in the ``runtime_dep`` folder.
-----
Usage
-----
The libvirt-provider plugin can be used on its own to orchestrate libvirt resources.
Currently it supports orchestrating virtual machines and containers.
These resources can be orchestrated via the CLI interface::
$ libvirt-provider -h
usage: libvirt_provider [-h] {instance,container} ...
options:
-h, --help show this help message and exit
COMMAND:
{instance,container}
For each of these resources, a certain set of actions can be performed.
For instance, to orchestrate an instance, the following command can be used::
$ usage: libvirt_provider instance create [-h]
[-dt INSTANCE_DOMAIN_TYPE] [-ddtype INSTANCE_DISK_DEVICE_TYPE] [-ddn INSTANCE_DISK_DRIVER_NAME]
[-ddt INSTANCE_DISK_DRIVER_TYPE] [-dtd INSTANCE_DISK_TARGET_DEV] [-dtb INSTANCE_DISK_TARGET_BUS]
[-memory INSTANCE_MEMORY_SIZE] [-vcpus INSTANCE_NUM_VCPUS] [-cpu-arch INSTANCE_CPU_ARCHITECTURE]
[-cpu-mode INSTANCE_CPU_MODE] [-mach INSTANCE_MACHINE] [-ct INSTANCE_CONSOLE_TYPE] [-st INSTANCE_SERIAL_TYPE]
[-sttp INSTANCE_SERIAL_TYPE_TARGET_PORT] [-tp INSTANCE_TEMPLATE_PATH]
name disk_image_path
optional arguments:
-h, --help show this help message and exit
Instance create arguments:
name The name of the instance
disk_image_path The path to the disk image
-dt INSTANCE_DOMAIN_TYPE, --domain-type INSTANCE_DOMAIN_TYPE
The domain type
-ddtype INSTANCE_DISK_DEVICE_TYPE, --disk-device-type INSTANCE_DISK_DEVICE_TYPE
The disk type
-ddn INSTANCE_DISK_DRIVER_NAME, --disk-driver-name INSTANCE_DISK_DRIVER_NAME
The disk driver name
-ddt INSTANCE_DISK_DRIVER_TYPE, --disk-driver-type INSTANCE_DISK_DRIVER_TYPE
The disk driver type
-dtd INSTANCE_DISK_TARGET_DEV, --disk-target-dev INSTANCE_DISK_TARGET_DEV
The disk target device
-dtb INSTANCE_DISK_TARGET_BUS, --disk-target-bus INSTANCE_DISK_TARGET_BUS
The disk target bus
-memory INSTANCE_MEMORY_SIZE, --memory-size INSTANCE_MEMORY_SIZE
The memory size of the instance, interpreted as KiB. Default is 1024MiB.
-vcpus INSTANCE_NUM_VCPUS, --num-vcpus INSTANCE_NUM_VCPUS
The number of virtual CPUs
-cpu-arch INSTANCE_CPU_ARCHITECTURE, --cpu-architecture INSTANCE_CPU_ARCHITECTURE
The CPU architecture
-cpu-mode INSTANCE_CPU_MODE, --cpu-mode INSTANCE_CPU_MODE
The CPU mode to be used when running the instance
-mach INSTANCE_MACHINE, --machine INSTANCE_MACHINE
The machine type
-ct INSTANCE_CONSOLE_TYPE, --console-type INSTANCE_CONSOLE_TYPE
The console type
-st INSTANCE_SERIAL_TYPE, --serial-type INSTANCE_SERIAL_TYPE
The serial type
-sttp INSTANCE_SERIAL_TYPE_TARGET_PORT, --serial-type-target-port INSTANCE_SERIAL_TYPE_TARGET_PORT
The serial type target port
-tp INSTANCE_TEMPLATE_PATH, --template-path INSTANCE_TEMPLATE_PATH
The path to the XML template that should be used to create the instance.
-extra-tp-values KEY=VALUE [KEY=VALUE ...], --extra-template-path-values KEY=VALUE [KEY=VALUE ...]
A set of key=value pair arguments that should be passed to the template. If a value contains spaces, you
should define it with quotes.
As indicated by the instance creation command, the ``libvirt-provider`` expects that a disk image file is provided as an argument::
$ libvirt-provider instance create <name> <disk-image-file>
The <disk-image-file> can either be prepared by downloading directly from one of the distribution repositories, or a prepared with a tool
like our `libvirt-provider <https://github.com/ucphhpc/libvirt-provider>`_ before it is used to create an instance via ``libvirt-provider``.
After the instance has been created, it can be started via the ``start`` argument::
$ libvirt-provider instance start <instance-id>
In turn, an orchestrated instance can be removed via the ``remove`` argument::
$ libvirt-provider instance remove <instance-id>
To discover the <instance-id> of a particular instance, the ``list`` argument can be used::
$ libvirt-provider instance ls
{
"instances": [],
"msg": "Instances",
"status": "success"
}
----------
Templating
----------
The ``libvirt-provider`` supports templating of the libvirt domain XML definition that is used to create a libvirt resource.
The supported XML template formats include `jinja <https://jinja.palletsprojects.com/en/3.1.x/>`_, `json <https://en.wikipedia.org/wiki/JSON>`_,
or regular `python string formatting <https://docs.python.org/3/library/stdtypes.html#str.format>`_. Examples of such formats can be found in the
repostries examples directory.
The template file can be provided as an argument to the ``create`` command::
$ libvirt-provider instance create <name> <disk-image-file> -tp/--template-path <template-file> -extra-tp-values/--extra-template-path-values <key=value>...
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"description": "================\nlibvirt_provider\n================\n\n.. image:: https://img.shields.io/pypi/pyversions/libvirt-provider.svg\n :target: https://img.shields.io/pypi/pyversions/libvirt-provider\n.. image:: https://badge.fury.io/py/libvirt-provider.svg\n :target: https://badge.fury.io/py/libvirt-provider\n\nA libvirt orchestration plugin for `corc <https://github.com/rasmunk/corc>`_\n\n------------\nInstallation\n------------\n\n.. code-block:: bash\n\n pip install libvirt-provider\n\n------------\nDependencies\n------------\n\nBefore the ``libvirt-provider`` can be succesfully installed, the distribution associated dependency script\nin the ``devel_dep`` folder should be executed. This will install the nessesary library files that ``libvirt-provider``\nrequire to function properly.\n\nIn addition, before an actual resource such as an instance or a container can be created by ``libvirt-provider``,\nthe required ``libvirt`` daemon has to be running on the system. This can be installed via the distribution installer\nscripts in the ``runtime_dep`` folder.\n\n-----\nUsage\n-----\n\nThe libvirt-provider plugin can be used on its own to orchestrate libvirt resources.\nCurrently it supports orchestrating virtual machines and containers.\nThese resources can be orchestrated via the CLI interface::\n\n $ libvirt-provider -h\n usage: libvirt_provider [-h] {instance,container} ...\n\n options:\n -h, --help show this help message and exit\n\n COMMAND:\n {instance,container}\n\nFor each of these resources, a certain set of actions can be performed.\nFor instance, to orchestrate an instance, the following command can be used::\n\n $ usage: libvirt_provider instance create [-h]\n [-dt INSTANCE_DOMAIN_TYPE] [-ddtype INSTANCE_DISK_DEVICE_TYPE] [-ddn INSTANCE_DISK_DRIVER_NAME]\n [-ddt INSTANCE_DISK_DRIVER_TYPE] [-dtd INSTANCE_DISK_TARGET_DEV] [-dtb INSTANCE_DISK_TARGET_BUS]\n [-memory INSTANCE_MEMORY_SIZE] [-vcpus INSTANCE_NUM_VCPUS] [-cpu-arch INSTANCE_CPU_ARCHITECTURE]\n [-cpu-mode INSTANCE_CPU_MODE] [-mach INSTANCE_MACHINE] [-ct INSTANCE_CONSOLE_TYPE] [-st INSTANCE_SERIAL_TYPE]\n [-sttp INSTANCE_SERIAL_TYPE_TARGET_PORT] [-tp INSTANCE_TEMPLATE_PATH]\n name disk_image_path\n\n optional arguments:\n -h, --help show this help message and exit\n\n Instance create arguments:\n name The name of the instance\n disk_image_path The path to the disk image\n -dt INSTANCE_DOMAIN_TYPE, --domain-type INSTANCE_DOMAIN_TYPE\n The domain type\n -ddtype INSTANCE_DISK_DEVICE_TYPE, --disk-device-type INSTANCE_DISK_DEVICE_TYPE\n The disk type\n -ddn INSTANCE_DISK_DRIVER_NAME, --disk-driver-name INSTANCE_DISK_DRIVER_NAME\n The disk driver name\n -ddt INSTANCE_DISK_DRIVER_TYPE, --disk-driver-type INSTANCE_DISK_DRIVER_TYPE\n The disk driver type\n -dtd INSTANCE_DISK_TARGET_DEV, --disk-target-dev INSTANCE_DISK_TARGET_DEV\n The disk target device\n -dtb INSTANCE_DISK_TARGET_BUS, --disk-target-bus INSTANCE_DISK_TARGET_BUS\n The disk target bus\n -memory INSTANCE_MEMORY_SIZE, --memory-size INSTANCE_MEMORY_SIZE\n The memory size of the instance, interpreted as KiB. 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If a value contains spaces, you\n should define it with quotes.\n\nAs indicated by the instance creation command, the ``libvirt-provider`` expects that a disk image file is provided as an argument::\n\n $ libvirt-provider instance create <name> <disk-image-file>\n\nThe <disk-image-file> can either be prepared by downloading directly from one of the distribution repositories, or a prepared with a tool\nlike our `libvirt-provider <https://github.com/ucphhpc/libvirt-provider>`_ before it is used to create an instance via ``libvirt-provider``.\n\n\nAfter the instance has been created, it can be started via the ``start`` argument::\n\n $ libvirt-provider instance start <instance-id>\n\n\nIn turn, an orchestrated instance can be removed via the ``remove`` argument::\n\n $ libvirt-provider instance remove <instance-id>\n\nTo discover the <instance-id> of a particular instance, the ``list`` argument can be used::\n\n $ libvirt-provider instance ls\n {\n \"instances\": [],\n \"msg\": \"Instances\",\n \"status\": \"success\"\n }\n\n----------\nTemplating\n----------\n\nThe ``libvirt-provider`` supports templating of the libvirt domain XML definition that is used to create a libvirt resource.\nThe supported XML template formats include `jinja <https://jinja.palletsprojects.com/en/3.1.x/>`_, `json <https://en.wikipedia.org/wiki/JSON>`_, \nor regular `python string formatting <https://docs.python.org/3/library/stdtypes.html#str.format>`_. 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