Package ganeti :: Module ssconf

Module ssconf

Global Configuration data for Ganeti.

This module provides the interface to a special case of cluster configuration data, which is mostly static and available to all nodes.

Classes

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SimpleStore
Interface to static cluster data.

Functions

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string

ReadSsconfFile(filename)
Reads an ssconf file and verifies its size.

source code

WriteSsconfFiles(values, dry_run=False)
Update all ssconf files.

source code

tuple

GetMasterAndMyself(ss=None)
Get the master node and my own hostname.

source code

CheckMaster(debug, ss=None)
Checks the node setup.

source code

VerifyClusterName(name, _cfg_location=None)
Verifies cluster name against a local cluster name.

source code

VerifyKeys(keys)
Raises an exception if unknown ssconf keys are given.

source code

Variables

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SSCONF_LOCK_TIMEOUT = 10

_VALID_KEYS = constants.VALID_SS_KEYS
Valid ssconf keys

_MAX_SIZE = 128* 1024
Maximum size for ssconf files

Imports: sys, errno, logging, errors, constants, utils, netutils, pathutils

Function Details

[hide private]

ReadSsconfFile(filename)

source code

Reads an ssconf file and verifies its size.

Parameters:

filename (string) - Path to file

Returns: string

File contents without newlines at the end

Raises:

RuntimeError - When the file size exceeds _MAX_SIZE

WriteSsconfFiles(values, dry_run=False)

source code

Update all ssconf files.

Wrapper around SimpleStore.WriteFiles.

GetMasterAndMyself(ss=None)

source code

Get the master node and my own hostname.

This can be either used for a 'soft' check (compared to CheckMaster, which exits) or just for computing both at the same time.

The function does not handle any errors, these should be handled in the caller (errors.ConfigurationError, errors.ResolverError).

Parameters:

ss - either a sstore.SimpleConfigReader or a sstore.SimpleStore instance

Returns: tuple

a tuple (master node name, my own name)

CheckMaster(debug, ss=None)

source code

Checks the node setup.

If this is the master, the function will return. Otherwise it will exit with an exit code based on the node status.

VerifyClusterName(name, _cfg_location=None)

source code

Verifies cluster name against a local cluster name.

Parameters:

name (string) - Cluster name

VerifyKeys(keys)

source code

Raises an exception if unknown ssconf keys are given.

Parameters:

keys (sequence) - Key names to verify

Raises:

errors.GenericError - When invalid keys were found