Package ClusterShell :: Module NodeUtils

Module NodeUtils

Cluster nodes utility module

The NodeUtils module is a ClusterShell helper module that provides supplementary services to manage nodes in a cluster. It is primarily designed to enhance the NodeSet module providing some binding support to external node groups sources in separate namespaces (example of group sources are: files, jobs scheduler, custom scripts, etc.).

Classes

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GroupSourceError
Base GroupSource error exception

GroupSourceNoUpcall
Raised when upcall or method is not available

GroupSourceQueryFailed
Raised when a query failed (eg.

GroupResolverError
Base GroupResolver error

GroupResolverSourceError
Raised when upcall is not available

GroupResolverIllegalCharError
Raised when an illegal group character is encountered

GroupResolverConfigError
Raised when a configuration error is encountered

GroupSource
ClusterShell Group Source class.

FileGroupSource
File-based Group Source using loader for file format and cache expiry.

UpcallGroupSource
GroupSource class managing external calls for nodegroup support.

YAMLGroupLoader
YAML group file loader/reloader.

GroupResolver
Base class GroupResolver that aims to provide node/group resolution from multiple GroupSources.

GroupResolverConfig
GroupResolver class that is able to automatically setup its GroupSource's from a configuration file.

Variables

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_DEFAULT_CACHE_TIME = 3600

__package__ = 'ClusterShell'