ctys-machine-states

February, 2010

NAME

ctys-machine-states - Definition of runtime states for plugins, VMs, and PMs

General

This document describes the current available machine states for PMs and VMs, which are mainly persitent states and thus utilized during collection and storage of inventory data by call of ' ctys -a ENUMERATE=... '

The data for dynamic plugins, which are almost stateless, at least volatile only, is used for the availability of the applications at the user interface only. Therefore each plugin has an ENABLING attribute, which suppresses the load of the deactivated plugin when set. These have some dependencies due to multiple usage of some plugin for others, e.g. CONSOLEs, which are used for almost all other plugins.

Attribute Values

The following generic attributes are provided for the management of entities.

ALL
Ignores the actual availability of a specific hypervisor. This is convenient for test environments, where the hypervisor on a machine is exchanged frequently.
ACTIVE
Active, available for execution. This is the configuration file is present, and staticly enabled by the VMSTATE attribute.
BACKUP
Backup, not available for execution.
CUSTOM
Custom state, available for execution.
DISABLED
Disabled, not available for execution.
EMPTY
Empty, available for execution.
ENABLED
Active and executable by actually available hypervisor. This is the present ACTIVE state and the operational and ENABLED presence of the hypervisor in SERVER mode.
IGNORE
Ignored, not available for execution.
PRESENT
Present, not available for execution.
TEMPLATE
Template, not available for execution.
TESTDUMMY
Test, available for execution.

The next table depicts the applicability of the previous attributes. When the semantics is different for various contexts the explanation is provided.

Attribute Value	HOSTs	VMs	PMs
ALL	x	x	x
ACTIVE	x	x	x
BACKUP	x	x	x
CUSTOM	x	x	x
DISABLED	x	x	-
EMPTY	x	x	-
ENABLED	x	x	x
IGNORE	x	x	x
PRESENT	x	x	x
TEMPLATE	x	x	x
TESTDUMMY	x	x	x

Runtime state attributes

HOSTs:	CLI, RDP, VNC, X11
VMs:	QEMU/KVM, VBOX, VMW, XEN
PMs:	PM

AUTHOR

Arno-Can Uestuensoez	<https://arnocan.wordpress.com/>
	<https://unifiedsessionsmanager.sourceforge.io/>
	<https://github.com/unifiedsessionsmanager>

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