Package ganeti :: Package cmdlib :: Module node :: Class LUNodeRemove
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Class LUNodeRemove

source code


Logical unit for removing a node.

Instance Methods [hide private]
dict
BuildHooksEnv(self)
Build hooks env.
source code
tuple; (list, list) or (list, list, list)
BuildHooksNodes(self)
Build hooks nodes.
source code
 
CheckPrereq(self)
Check prerequisites.
source code
 
Exec(self, feedback_fn)
Removes the node from the cluster.
source code

Inherited from base.LogicalUnit: CheckArguments, DeclareLocks, ExpandNames, HooksCallBack, __init__

Inherited from object: __delattr__, __format__, __getattribute__, __hash__, __new__, __reduce__, __reduce_ex__, __repr__, __setattr__, __sizeof__, __str__, __subclasshook__

Class Variables [hide private]
  HPATH = "node-remove"
  HTYPE = "NODE"

Inherited from base.LogicalUnit: REQ_BGL

Instance Variables [hide private]

Inherited from base.LogicalUnit: dry_run_result

Properties [hide private]

Inherited from object: __class__

Method Details [hide private]

BuildHooksEnv(self)

source code 

Build hooks env.

Returns: dict
Dictionary containing the environment that will be used for running the hooks for this LU. The keys of the dict must not be prefixed with "GANETI_"--that'll be added by the hooks runner. The hooks runner will extend the environment with additional variables. If no environment should be defined, an empty dictionary should be returned (not None).
Overrides: base.LogicalUnit.BuildHooksEnv

BuildHooksNodes(self)

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Build hooks nodes.

This doesn't run on the target node in the pre phase as a failed node would then be impossible to remove.

Returns: tuple; (list, list) or (list, list, list)
Tuple containing a list of node UUIDs on which the hook should run before the execution and a list of node UUIDs on which the hook should run after the execution. As it might be possible that the node UUID is not known at the time this method is invoked, an optional third list can be added which contains node names on which the hook should run after the execution (in case of node add, for instance). No nodes should be returned as an empty list (and not None).
Overrides: base.LogicalUnit.BuildHooksNodes

CheckPrereq(self)

source code 

Check prerequisites.

This checks:

  • the node exists in the configuration
  • it does not have primary or secondary instances
  • it's not the master

Any errors are signaled by raising errors.OpPrereqError.

Overrides: base.LogicalUnit.CheckPrereq

Exec(self, feedback_fn)

source code 

Removes the node from the cluster.

Overrides: base.LogicalUnit.Exec