Package ganeti :: Module config

Module config

Configuration management for Ganeti

This module provides the interface to the Ganeti cluster configuration.

The configuration data is stored on every node but is updated on the master only. After each update, the master distributes the data to the other nodes.

Currently, the data storage format is JSON. YAML was slow and consuming too much memory.

Classes

[hide private]

TemporaryReservationManager
A temporary resource reservation manager.

ConfigWriter
The interface to the cluster configuration.

Functions

[hide private]

_ValidateConfig(data)
Verifies that a configuration dict looks valid.

source code

_MatchNameComponentIgnoreCase(short_name, names)
Wrapper around utils.text.MatchNameComponent.

source code

list of tuples; (int, string, string)

_CheckInstanceDiskIvNames(disks)
Checks if instance's disks' iv_name attributes are in order. source code

Variables

[hide private]

_config_lock = locking.SharedLock("ConfigWriter")

_UPGRADE_CONFIG_JID = "jid-cfg-upgrade"

Imports: copy, os, random, logging, time, itertools, errors, locking, utils, constants, rpc, objects, serializer, uidpool, netutils, runtime, pathutils, network

Function Details

[hide private]

_ValidateConfig(data)

source code

Verifies that a configuration dict looks valid.

This only verifies the version of the configuration.

Raises:

errors.ConfigurationError - if the version differs from what we expect

_CheckInstanceDiskIvNames(disks)

source code

Checks if instance's disks' iv_name attributes are in order.

Parameters:

disks (list of objects.Disk) - List of disks

Returns: list of tuples; (int, string, string)

List of wrongly named disks, each tuple contains disk index, expected and actual name