Package ganeti :: Module ssconf :: Class SimpleStore
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Class SimpleStore

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Interface to static cluster data.

This is different that the config.ConfigWriter and SimpleConfigReader classes in that it holds data that will always be present, even on nodes which don't have all the cluster data.

Other particularities of the datastore:

Instance Methods [hide private]
 
__init__(self, cfg_location=None)
x.__init__(...) initializes x; see x.__class__.__doc__ for signature
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KeyToFilename(self, key)
Convert a given key into filename.
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_ReadFile(self, key)
Generic routine to read keys.
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WriteFiles(self, values)
Writes ssconf files used by external scripts.
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GetFileList(self)
Return the list of all config files.
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GetClusterName(self)
Get the cluster name.
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GetFileStorageDir(self)
Get the file storage dir.
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GetMasterCandidates(self)
Return the list of master candidates.
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GetMasterCandidatesIPList(self)
Return the list of master candidates' primary IP.
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GetMasterIP(self)
Get the IP of the master node for this cluster.
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GetMasterNetdev(self)
Get the netdev to which we'll add the master ip.
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GetMasterNode(self)
Get the hostname of the master node for this cluster.
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GetNodeList(self)
Return the list of cluster nodes.
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GetNodePrimaryIPList(self)
Return the list of cluster nodes' primary IP.
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GetNodeSecondaryIPList(self)
Return the list of cluster nodes' secondary IP.
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GetClusterTags(self)
Return the cluster tags.
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GetHypervisorList(self)
Return the list of enabled hypervisors.
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GetMaintainNodeHealth(self)
Return the value of the maintain_node_health option.
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GetUidPool(self)
Return the user-id pool definition string.
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Inherited from object: __delattr__, __format__, __getattribute__, __hash__, __new__, __reduce__, __reduce_ex__, __repr__, __setattr__, __sizeof__, __str__, __subclasshook__

Class Variables [hide private]
  _SS_FILEPREFIX = "ssconf_"
  _VALID_KEYS = constants.SS_CLUSTER_NAME, constants.SS_CLUSTER_...
  _MAX_SIZE = 131072
Properties [hide private]

Inherited from object: __class__

Method Details [hide private]

__init__(self, cfg_location=None)
(Constructor)

source code 

x.__init__(...) initializes x; see x.__class__.__doc__ for signature

Overrides: object.__init__
(inherited documentation)

_ReadFile(self, key)

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Generic routine to read keys.

This will read the file which holds the value requested. Errors will be changed into ConfigurationErrors.

WriteFiles(self, values)

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Writes ssconf files used by external scripts.

Parameters:
  • values (dict) - Dictionary of (name, value)

GetFileList(self)

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Return the list of all config files.

This is used for computing node replication data.

GetUidPool(self)

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Return the user-id pool definition string.

The separator character is a newline.

The return value can be parsed using uidpool.ParseUidPool():

 ss = ssconf.SimpleStore()
 uid_pool = uidpool.ParseUidPool(ss.GetUidPool(), separator="\n")

Class Variable Details [hide private]

_VALID_KEYS

Value:
constants.SS_CLUSTER_NAME, constants.SS_CLUSTER_TAGS, constants.SS_FIL\
E_STORAGE_DIR, constants.SS_MASTER_CANDIDATES, constants.SS_MASTER_CAN\
DIDATES_IPS, constants.SS_MASTER_IP, constants.SS_MASTER_NETDEV, const\
ants.SS_MASTER_NODE, constants.SS_NODE_LIST, constants.SS_NODE_PRIMARY\
_IPS, constants.SS_NODE_SECONDARY_IPS, constants.SS_OFFLINE_NODES, con\
stants.SS_ONLINE_NODES, constants.SS_INSTANCE_LIST, constants.SS_RELEA\
SE_VERSION, constants.SS_HYPERVISOR_LIST, constants.SS_MAINTAIN_NODE_H\
EALTH, constants.SS_UID_POOL,